Computer-assisted Experiments for
Natural Sciences
PHYSICS · CHEMISTRY · BIOLOGY · TECHNOLOGY
Computer-assisted experiments with Cobra3
The Cobra3 system consists of numerous
components, which are optimally matched
with each other and fulfil all your wishes.
Whether physics, chemistry or biology,
demonstration experiment, student
experiment or use in practical training:
Cobra3 always precisely satisfies your
needs!
Particular importance has been placed in
fast and easy experiment setup, extremely
stable equipment connections and very easy
use. Phywe “measure” measurement
software also enables simple and reliable
data recording, analysis and further
processing.
"measure" measurement
software with fully automatic
hardware-recognition!
Simply connect to the PC and measure! The “measure”
software automatically recognises the connected
hardware.
Demonstration experiment
With the DISPLAY UNIT is also very easy to use for
demonstration experiments. Up to 4 measured variables
can be displayed simultaneously with max.
2 DISPLAY-UNITs!
Direct sensor connection
Direct connection of further measuring sensors. Fully
automatic sensor recognition prevents errors!
Automatic module recognition
Measuring modules for all relevant measured variables.
Fully automatic module recognition prevents sources
of errors!
2 x Timer/Counters
Both inputs can be used as a time measurer, counter
or as a TTL input. One input also as “Counter with gate
time”. Digital sampling rate: 4 MHz
Can be variably adapted to your needs!
Measuring
without PC
100 % stable
Up to 8 UNIT´s can be
cascaded
Demonstration Experiment
500.000 Hz
data recording
With the Cobra3
COM-UNIT can also be fully used
without a computer!
100% stable thanks to snap
connection. Up to 8 measuring
UNITs can be connected
simultaneously. (Cascading!)
Numerous fixing facilities for
fixing to stands. Optimum for
demonstration experiments!
Super-fast analog data recording
ensures very good measuring
results! In many experiments a
good replacement for an
oscilloscope!
Demonstration class
Safe power supply
Without PC: COM-UNIT + measuring UNIT = Digital
multimeter. With additional DISPLAY-UNIT: full quality
demo multimeter!
5 V fixed voltage output: so that the
Light barriers are not damaged!
PC interface
PC interface for
communication between
Cobra3 and the PC.
Control Input/Output
Light barrier connected as drop counter or to
control a motor piston burette.
Recorder output
For connecting Yt recorder or
voltmeter. For analogue
presentation of the measured
values.
Conductivity measurement
pH - measurement
Simultaneous measurement of both variables
possible through electrical isolation
of the pH/potential and conductivity inputs!
Physics
for...
Biology
Chemistry
Student Experiment
Demonstration
Experiment
Laboratory
Experiments
Cobra3: The System
From the Cobra3 UNITs to the measuring modules and sensors, “measure” measurement software and the experiment literature, all
elements of the Cobra3 system are optimally matched with each other, from A – Z.
All system components can be very easily and precisely put together, just as you like!
4 Cobra3 UNITs
Measuring modules
“measure” measuring
software
Measuring sensors
Demonstration displays
Over 200 FREE experiments with
preset measuring parameters,
measuring curves and detailed
descriptions
Over 200 experiment
descriptions
Accessories
??????
For more
information please
contact your sales
partner on the
backside of
this brochure.
NOTE: A more detailed overview of the measured variables, sensors, etc. is given in the fold-out page at the end of the brochure!
TIP: You can keep this fold-out page open while working with this brochure. This will enable you to see which equipment and
software you require if you want to measure and display a specific measured variable. This overview also contains details of pages,
which helps you to quickly find the required equipment in the brochure.
1
Cobra3 UNIT´s
Cobra3 BASIC-UNIT
12150.00
Very fast Interface for measurements or open-loop and closed-loop control in physics, chemistry, biology and technology. Can be used either in
conjunction with a PC (serial interface) or – without a PC – together with the Cobra3 COM-UNIT. With USB adapter also connection to USB interface
possible. Can be combined with Cobra3 CHEM-UNIT, Cobra3 COM-UNIT with or without Cobra3 DISPLAY-UNIT. Can be extended by additional
measuring modules and sensors for nonelectrical measuring quantities. The range of functionality can be updated through the RS 232 interface.
Shock-resistant plastic housing with support bases, a wide range of fixing possibilities and lateral connectors for connecting further units. Measure
up to 4 parameters simultaneously.
Smoothed DC voltage source 5 V–/
0.2 A for a direct supply of light barriers,
indicator lamps or other consumers
Collective connector for plug-in
modules for measuring forces,
magnetic fields, temperatures, pHvalues, luminous intensities, ...
Connector for an external voltage
supply (12 V–/ 2 A) (If the Cobra3
BASIC-UNIT is combined with other
UNIT´s, they require only one external
voltage supply)
Lateral connection socket for cascading
several BASIC-/CHEM-UNIT´s and for
future extensions
Ground-related analog input (± 30 V,
± 10 V), 12 bits
Bus system for the communication with
the Cobra3 COM-UNIT
Sensor ports S1 and S2 allowing to
connect those sensors directly which
do not require any measuring module.
Using the Cobra3 measuring module
converter and an extension cable it is
also possible to connect measuring
modules to these ports.
Sub-D connector, 9-pin type, for the
serial RS232 communication with a
PC! With adapter connection to USB
interface possible.
2 timers or 1 timer and 1 counter
(TTL IN)
Switchable differential analog inputs (± 30 V,
± 10 V, ± 3 V, ± 1 V, ± 0.3 V, ± 0.1 V), 12 bits
Cobra3 BASIC-UNIT – All advantages at a glance:
4. Measure up to 4 parameters simultaneously!
1. Very fast! Sampling rate: 500.000 Hz!
5. more than 200 detailed described experiments!
2. 5 analog inputs, use 3 simultaneously!
3. 2 digital inputs (2 x Timer/Counter), sampling rate 4 MHz 6. combine it with Cobra3 CHEM-UNIT, COM-UNIT and DISPLAY-UNIT
Technical data:
7 measurement inputs, with:
5 analog inputs (use 3 inputs simultaneously)
– Modul port:
±10 V
Connection:
Sub-D- connector, 25-pin type
– Sensor port 1:
± 30/10 V
Connection:
4 mm sockets, Sub-D-connector, 9-pin type
Input
ground-related
Input impedance
> 500 k
– Sensor port 2:
±30/10/3/1/0,3/0,1 V
Connection
4 mm sockets, Sub-D-connector, 9-pin type
Differential input
floated
Input impedance
1M
– Valid for all analog inputs:
Sampling rate
max. 500.000 Hz
Online mode
up to approx. 5 kHz
Burst mode
5 Hz – 500.000
Resolution
12 bits
Overvoltage protection 230 V AC
Triggering
adjustable
2 digital inputs:
Timer/Counter 1 and Timer/Counter 2
Counting capacity
32 or 40 bits
Sampling rate
1 MHz or 4 MHz
Connection
4 mm sockets
Configuration possible for:
TTL signals:
timer-counter/counter
Analog signals
counter / counter
2
Analog output (included in module ports)
Voltage range
± 10 V
Resolution
12 bits
Connection
Sub-D-connector, 9 or 25-pin type
Voltage output (e.g. for light barriers):
Fixed voltage
5 V / 0.2 A
Connection
4 mm sockets
Your advantage: Due to fixed voltage of 5 V no destroying of light barrier possible!
General data:
RS 232 interface
Bit rate
Data storage capacity
Connection of further units
Voltage supply
Connection
Housing dimensions
Weight:
Sub-D-connector, 9-pin type
max. 115200 bit/s
12000 values
edge connectors, 48-pin type
12 V / 6 W
low-voltage socket
190 x 135 x 90 mm
0.4 kg
Cobra3 UNIT´s
Cobra3 CHEM-UNIT – The entire Chemistry in just one box!
12153.00
Especially developed Interface for measurement applications in the field of chemistry. Can be used either in conjunction with a PC
(serial interface) or – without a PC – together with the Cobra3 COM-UNIT. With USB adapter also connection to USB interface possible.
Can be combined with Cobra3 BASIC-UNIT, Cobra3 COM-UNIT with or without Cobra3 DISPLAY-UNIT. The range of functionality can
be updated through the RS 232 interface. Shock-resistant plastic housing with support bases, a wide range of fixing possibilities and
lateral connectors for connecting further units. Measure up to 8 parameters simultaneously.
Connector for an external voltage
supply (12 V–/ 2 A) (If the Cobra3
CHEM-UNIT is combined with other
UNIT´s, they require only one external
voltage supply)
Smoothed DC voltage source 5 V–/
0.2 A for a direct supply of light barriers,
indicator lamps or other consumers.
100% stable connection of several units
through interlocking connectors. The
units can also be fixed on top of each
other by sliding holders.
Analog In: 3 Measurement ranges
(adjustable and autorange)
Lateral connection socket for cascading
several BASIC-/CHEM-UNIT´s and for
future extensions
TTL In/Out: TTL signals for drop counter
or for controlling a motor piston burette
Bus system for the communication with
the Cobra3 COM-UNIT
Sub-D connector, 9-pin type, for the serial RS232
communication with a PC! With adapter connection
to USB interface possible.
6 ranges of measurement (adjustable
and autorange), sensors with 4-mm
plugs or diode plugs connectable.
Termperature (T4) integrated in diode
socket.
pH/Potential: 0..14 pH, -2200...+2200
mV, Connection: BNC socket
T1, T2, T3: 3 x Temperature measurement
possible with NiCr-Ni sensors
Cobra3 CHEM-UNIT – All advantages at a glance:
1. The entire Chemistry in just one box!
2. 10 measurement inputs, 8 simultaneously!
3. pH/Potential and Conductivity are electrically
isolated from each other
Technical data:
10 measurement inputs:
Analog In:
3 ranges of measurement
± (3,2 V; 32 V; 81 V)
adjustable and autorange)
4 mm-sockets
pH/Potential:
Conductivity:
0...14 pH (0,01 pH)
-2200...+2200 mV (±1 mV)
input resistance: 1012
BNC socket
6 ranges of measurement
(adjustable and autorange)
0 ... 20 µS/cm
20 ... 200 µS/cm
0,2... 2 mS/cm
2 ... 20 mS/cm
20 ... 200 mS/cm
200 ...1000 mS/cm
4 mm-sockets and diode socket
(The inputs pH/Potential and Conductivity are electrically
isolated from each other)
4. More than 50 detailed decribed experiments!
5. combine it with Cobra3 BASIC-UNIT, COM-UNIT
and DISPLAY-UNIT
Temperature T1, T2, T3: for NiCr-Ni-Thermocouples
-100°C ... +1500 °C
NiCr-Ni-DIN-socket (Typ K)
Temperature T4:
for Pt1000 sensor
-100 °C ... +850 °C
(integrated in the diode socket for conductivity
measurements)
Temperature T0:
temperature sensor integrated in the housing
-25 °C ... +85 °C
TTL In/Out:
TTL signal for drop counter or for controlling a
motor piston burette
4 mm-sockets
Voltage output:
5 V / 0,2 A (e.g. for light barrier as drop counter)
4 mm-sockets
Connections:
RS 232C-D-SUB-9 jack up to 115 200 baud
Voltage supply:
12 V low voltage jack for plug-in power supply unit
Weight:
0.7 kg
3
Cobra3 UNIT´s
Cobra3 COM-UNIT
12152.00
For using the Cobra3 BASIC-UNIT or CHEM-UNIT without a computer. Easy connection to the BASIC-/CHEM-UNIT by plugging it into the lateral edge
connector. LCD display with background lighting for selecting and presenting the measurement data. It is possible to connect the Cobra3 DISPLAYUNIT or large-format displays for demonstration purposes. Selection wheel for a comfortable use of the menu and for entering data. The operating
and evaluation routines can be updated through the RS232 interface. Shock-resistant plastic housing with support bases, a wide range of fixing
possibilities and lateral connectors for connecting further units.
Connector for an external voltage supply
(12 V– / 2 A) (If the Cobra3 COM-UNIT
and the Cobra3 BASIC-/CHEM-UNIT are
combined, they require only one external
voltage supply)
Large-format LCD display with
background lighting for displaying the
measurement data and menu
Sub-D-connector, 9-pin type, for
connecting up to four digital large-format
LED displays or two DISPLAY-UNIT´s
Contrast adjustment of the LCD display
Bus system for the communication with
Cobra3 UNITS
Recorder output (0...3 V) for connecting
y-t-recorders or voltmeters. The output
voltage is always proportional to the
value displayed or selected. All
measuring quantities (forces, magnetic
fields, pH-values…) are converted
automatically into voltages.
Sub-D-connector, 9-pin type, can be
connected to the RS232 interface of a
PC in order to update the COM-UNIT.
Push-buttons and adjusting wheel for
working with the menu
Technical data:
LCD display with graphic
capability:
Resolution: 128x64 pixel
Contrast: adjustable
Background lighting:
LED, can be deactivated
Connectors for:
DISPLAY-UNIT or large Sub-D-connector,
9-pin type format display:
Units: edge connector, 48-pin type
RS 232 interface: Sub-D-connector, 9-pin type
Voltage supply: low-voltage socket
tY-recorder: 4 mm sockets
General data:
Recorder output: 0…3 V
Voltage supply: 12 V / 2 W
Housing dimensions:
190x135x90 mm
Weight: 0.7 kg
Cobra3 COM-UNIT – All advantages at a glance:
1. Cobra3 WITHOUT a computer possible!
2. up to 8 BASIC-UNIT´s and/or CHEM-UNIT´s can be connected!
3. display 4 parameters simultaneously
4. -numeric display
Cobra3 DISPLAY-UNIT
5. intuitive and easy use of the menu
6. measured values can be displayed on Display
7. combined with the DISPLAY-UNIT a fully functional demo multimeter
12150.00
With the Cobra3 DISPLAY-UNIT, you can extend your Cobra3 System to a fully functional demo-multimeter. The two large 5-digit
displays with a digitheight of 20 mm are supplemented by a dot matrix display, which shows the corresponding unit for the values.
Two additional LED displays above the measured values show you the respective measuring channel, via which the illustrated current
values are recorded. In combination with Cobra3 BASIC-UNIT or CHEM-UNIT with Cobra3 COM-UNIT all measured values can be
displayed. Using the software modul “PowerGraph you can connect the DISPLAY-UNIT directly to the PC. Then Data cable, socket/socket,
null modem (14603.00) is necessary.
Technical data:
UNIT with two 5-digit 20-mm LED displays for digital and LED dot matrix
displays for demonstrating units and two dot matrix displays for demonstrating
the selected measurement channels.
Connections: 2 RS 232C-D-SUB-9 plugs for
connecting up to the Cobra3 COM UNIT via
a cable or for connecting up to 2 hand-held
devices or
1 balance with 9600 Baud
1 RS 232C-D-SUB-9 jack for connecting an
additional Cobra3 DISPLAY UNIT
1 48-pin system plug for direct connection to the
Cobra3 COM-UNIT
Supply:
4
12V
Extra-low voltage jack for plug-in power supply unit
Cobra3 DISPLAY-UNIT – All advantages at a glance:
1. Can even be seen from the back row!
2. can be fixed on different support material
3. Using the software modul “PowerGraph you can connect the DISPLAY-UNIT
directly to the PC. Then, data cable, null modem 14603.00 necessary!
4. up to 2 DISPLAY-UNIT´s (= 4 values) can be connected!
Experimental descriptions Cobra3
– detailed, easy and for all topics in the field of Physics, Chemistry and Biology!
More than 200 experimental descriptions are available for all topics in the field of Physics, Chemistry and Biology! Furthermore you
can find the experimental descriptions installed on the CD-ROM measure (14500.00). All these experimental descriptions can be used
free of charge.
Just select the experiment you want and the measuring parameters, measuring diagrams and descriptions (pdf-file) are
loaded automatically. There´s no easier way!
Experimental objective
The first section gives a short description of the
Ciruit diagram
meaning, the purpose and the teaching objectives
The diagrams help to
of the experiment
understand the laying of the
cables and the signal paths in
electrical or electronic
experiment set-ups.
Measuring
parameters
Suggestions for the
measuring parameters
support you for a quick and
successful realisation of the
experiment
TIP: Select one of the more
than 200 installed
experiments and the
experimental parameters
are loaded automatically!
There´s no easier way!
Material list
The complete list of required
equipment for the experiment
CD-ROM measure
with more than
200 installed free
experiments!
(Art.Nr. 14500.00)
Photo of experiment
A photo of the experimental
set-up facilitate the
installation and
Experimental procedure
The experimental procedure and
evaluation is explained step by
step
Measuring results
01310.02
Handbook Cobra3
Physics, Computerassisted
experiments with
Cobra3
01320.02
Handbook Cobra3
Chemistry/Biology,
Computerassisted
experiments with
Cobra3
Facts and formulas about
the experiment and the
results a successful
realisation of the experiment
5
Applications Cobra3 COM-UNIT
Cobra3 without Computer
Cobra3 BASIC-UNIT
+ Cobra3 COM-UNIT
Cobra3 CHEM-UNIT
+ Cobra3 COM-UNIT
= Digital-Multimeter
= Digital-Multimeter
Cobra3 BASIC-UNIT
+ Cobra3 COM-UNIT
+ Cobra3 DISPLAY-UNIT
Cobra3 CHEM-UNIT
+ Cobra3 COM-UNIT
+ Cobra3 DISPLAY-UNIT
= Digital Demo-Multimeter
= Digital Demo-Multimeter
By using the Cobra3 COM-UNIT, NO computer is required to record the measured values
All the Cobra3 BASIC and CHEM-UNIT inputs are analysed and displayed by the COM-UNIT
Really easy to use thanks to menu controls – all functions can be easily selected using a setting wheel and
pushbuttons!
The individual units can all be securely connected with each other and can be easily and safety carried as
a single unit to the place of measurement!
100% stable!
Experiment example: Weather station The following devices can be replaced by using
the Cobra3 COM-UNIT:
Simultaneous measurement of:
• Pressure
(Pressure measuring module at port module)
• Relative air humidity
(air humidity sensor directly at the S1 sensor port)
• Temperature
(semi-conductor temperature sensor directly
at the S2 sensor port)
• Wind speed (no picture)
(Wind sensor, 4-mm plugs)
6
- Stop clock
- Digital counter
- Geiger counter
- Voltmeter
- Thermometer
- Hygrometer
- Barometer
- Teslameter
- Dynamometer
- pH-meter
- Lux meter
- Oxygen meter
- Conductivity meter
- Potential meter
+ Combination of these devices
Applications Cobra3 COM-UNIT
Cobra3 without Computer
Cobra3 COM-UNIT applications!
Digital multimeter in student experiment
With its robust design and 100% secure connection of the UNITs,
the Cobra3 is also ideally suited for student experiments.
The fold-out stand bases also enable the UNITs to be placed on
the table at an angle, which makes experimenting even more
convenient!
Real digital demo Multimeter
Used in conjunction with the Cobra3 DISPLAY-UNIT, the Cobra3
system is ideally suited for demonstration classes.
Up to 2 DISPLAY-UNITs can be connected at the same time, i.e.
4 measured values can be displayed in parallel.
Through diverse fixing facilities on the equipment, the UNITs can
always be very easily, quickly and securely fastened.
Conjunction of the UNIT´s. 100% stable!
Only 3 steps to the new measuring
device:
1. Plug together the BASIC or CHEM-UNIT and COM-UNIT!
2. Plug the NiCr-Ni measuring module with NiCr-Ni sensor
on the module port of the Cobra3 BASIC-UNIT!
3. Which measuring channel (port) is to be displayed large
in the LCD display? If a DISPLAY-UNIT is connected this
value can of course also be viewed on the display by
pressing a button!
COM-UNIT menu control! All values easily
and fast at the press of a button!
To measurement channel selection!
put together
Select module or sensor!
open
pull
push in
Ready!
Show measured value in the LCD
Display or transfer to the
DISPLAY-UNIT
7
Measuring software measure
“measure” measuring software. The intuitive to use measurement software for teaching!
“measure” measurement software, CD-ROM
Art. No. 14500.00
Phywe’s measurement software “measure” is divided into 2 areas:
1. Free main program for displaying measured values and data analysis
2. Measurement programs for Phywe measuring units for data recording.
FREE main program for data input and analysis
Freeware
FREE Update and Demo
Version in the Internet:
http://www.phywe.com
1. Free, extensive main program (for issuing to pupils, students, etc.) Analysis possible
at home!
2. Free! Over 200 experiment descriptions with preset measuring parameters, measuring
curves and experiment descriptions as a pdf file
3. 4 free possibilities for data input via:
1. Functional regulation
2. Manual data input,
3. Graphic data input
4. Data import via clipboard
(e.g. Excel, Word, etc.)
4. Data export/import (measured values and graphics) from/to standard Windows
programs (Word, Excel, PowerPoint, etc.) via clipboard
5. Free! Can be used in mathematics lessons for discussing curves!
6. Easy, intuitive use of the software through compliance with the Microsoft standard
7. One main program for all UNITs, modules, sensors and
other Phywe measuring equipment with PC interface
8. Large functions library
Analysis: zeros, extreme values, areas, etc.
Zoom, measure, cut, mark, label, etc.
Fourier analysis and channel conversion
Smooth/level, mean value, linear regression, curve fitting, etc.
Function generator; data can be played back with sound card!
With Phywe you only pay for the precise software you need! Nothing more!
Art. No.
14400.61
14507.61
14403.61
14405.61
14406.61
14407.61
14408.61
14409.61
14415.61
14416.61
14417.61
14418.61
14419.61
14420.61
14450.61
14451.61
14470.61
14503.61
14504.61
14505.61
14506.61
14508.61
14509.61
14509.61
Product name
Software Conductivity meter
Software Cobra3 Lux
Software Work/power measuring device
Software Temperature measuring device 4-2
Software for electric field meter
Software for X-ray unit 35 kV
Software pH-measuring unit DEMO
Software Demo multimeter
Software hand-held measuring device - oxygen
Software hand-held measuring device - pressure
Software hand-held measuring device - Lux
Software hand-held measuring device - conductivity
Software hand-held measuring device pH/Potential
Software hand-held measuring device -2 x NiCr-Ni
Software PHYCON USB interface
Software stepped motor
Software balance
Software Cobra3 temperature
Software Cobra3 universal recorder
Software Cobra3 oxygen
Software Cobra3 radioactivity
Software Cobra3 conductivity
Software Cobra3 pH/potential
Software Cobra3 pH/potential
Art. No. Product name
14510.61
14511.61
14512.61
14514.61
14515.61
14516.61
14518.61
14520.61
14521.61
14522.61
14523.61
14524.61
14525.61
Software Cobra3 pressure
Software Cobra3 timer/Counter
Software Cobra3 transl./Rotation
Software Cobra3 frequency analysis
Software Cobra3 force/Tesla
Software Cobra3 gas laws
Software Cobra3 weather station
Software Cobra3 CHEM-UNIT
Software Cobra3 Hall effect
Software Franck-Hertz experiment
Software goniometer
Software multi-channel analyzer
Software Cobra3 PowerGraph
Upgradable
Our philosophy: Individual, cost-effective software
modules for your precise requirements. Your advantage:
1. You only pay for the software module(s) you want
to use!
2. You only see the extent of software you require.
Everything not necessary for your application doesn’t
even appear!
3. Further, software functions required in future can
be easily added later!
4. Both the firmware of the units and the software
modules can be updated FREE at any time over the
internet! You profit from free software developments!
5. You can install all software module as demo version!
Even more convenience: PowerGraph software module: Graphic presentation of the hardware
The PowerGraph software module helps you to obtain optimum measured results even
faster, easier and more conveniently. Its outstanding features are:
1.
2.
3.
4.
Automatic sensor and module recognition, graphic display of the connected hardware!
Any combination of all measured variables
Connected measuring modules and sensors can be easily configured!
Measurements can be repeated at the touch of a button! => All measurement curves
in one graph! (e.g. for accelerated movement with different masses, etc.)
5. Any measured variable can be selected for the X-axis (XY graph)
6. Return values (relations) can be displayed! e.g. magnetic hysteresis, Lissajous figures,
etc.
7. “Virtual measuring channels” enable online conversion of measured values (e.g. conversion
from °C to K) or off-setting measured values of different measuring channels (e.g.
calculation, display of the resistance from current and voltage, etc.)
8
Measuring software measure
Data recording with Phywe measuring units – one software for all measuring units – it couldn’t be easier!
Apart from the Cobra3 interface system there are numerous other Phywe measuring devices which have with a PC interface. The
advantage: The data recording and data evaluation for all devices can be performed using the “measure” measuring software!
Two possible ways to measure!
A. Configure experiment yourself
1. Select measuring device
B. Select experiment with preset measuring
parameters!
1. Select from over 200 pre-installed experiments,
free!
e.g. Cobra3 temperature
2. Configure measurement
e.g. specific thermal capacity of solid bodies (P1349400)
Automatically open: Measurement curves and experiment
descriptions as a pdf file, the measurement parameters are loaded
in the background!
2. Start measurement:
You can adjust the measurement
parameters in the measurement window!
Then click on!
Parameters are preset and can be easily changed by you if required
Otherwise simply click on
If you want to precisely repeat the settings
you can save them in a file and call them
up again later!
3. Measurement (the same for both measurement methods!)
In both measurement methods you can easily select between analogue display, digital display or diagram
to display the measured values!
The following Phywe measuring units are
available with an interface:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
X-ray unit 35 kV
PHYCON, starter USB interface
pH-Meter, demo
Work and power meter
Demo multimeter
Temperature measuring unit 4 – 2
Goniometer unit
Conductivity measuring device
Multi-channel analyser
Franck-Hertz unit
Electric field meter
09058.99
12500.00
13702.93
13715.93
13721.93
13617.93
13903.99
13701.93
13726.99
09105.93
11500.10
12.
13.
14.
15.
16.
17.
Hand-held measuring device - oxygen
Hand-held measuring device - pressure
Hand-held measuring device - Lux
Hand-held measuring device - conductivity
Hand-held measuring device pH/potential
Hand-held measuring device temperature 2xNiCr-Ni
07135.00
07136.00
07137.00
07138.00
07139.00
07140.00
A more detailed overview of the individual measuring
devices is given at the end of this brochure.
9
Measurement software
Measured value analysis with the “measure” measurement software – innumerable
analysis and display possibilities! And all free of charge!
The extensive functions library of “measure” measurement software ensures the flexibility and diversity expected of powerful modern
software!
Up to 16 measurem. curves can be displayed simultaneously!
Click on the relevant button to individually activate or deactivate
each measurement curve. Functions and relations can be
displayed!
Choose from over 200 experiments!
Under File > Open experiment you can choose from over 200
experiments. The measurement curves, measurement
parameters and detailed experiment description are
automatically opened as a pdf file.
Simply double click on a measurement curve!
And you are directly in the display options and e.g. can change
line thickness, colour, axis scaling, and much more.
Save and print measured values!
All measured series can be saved in their own files. Measured
values can be printed as a graph or tables of values.
Analysis tools:
Peak analysis, curve analysis, mean value, gradient,
integral, extreme values, play back measurement, Fourier
analysis, curve fitting, scale curves, equivalent point, smooth,
measure curves, linear regression
Display tools:
Cursor, zoom, set marking, display coordinates, X- and Y-axis
can be freely moved and scaled with mouse!
Measurement channel manager
All measurement series can be plotted against each other in
any combination using the measurement channel manager.
Channel conversion using functions such as:
+-*/, abs, x^y, sqr, sqrt, sin, cos, tan, arcsin, arccos, arctan,
logarithms, constants: e, , smoothing measured value series,
delete measured values.
Export data
Measured values can be copied into the clipboard as a graph
or numbers and can therefore be transferred to other programs
such as e.g. Excel, Word, PowerPoint, etc.
Generate new measured value columns
New columns are inserted in the table of values by
mathematical conversion of the measured series.
Mathematically converted measured series are treated as
original measured series
Screen shot function for freely selectable sections
Use the “Crtl + Shift” key combination to transfer and display
a selected area into an independent window. Here you can
highlight important facts in a striking way! Ideal for use in
class!
10
Measuring software measure
“measure” measuring software – experimenting with measure is so easy!
Measuring example: Generation of an alternating voltage, rectification and smoothing (P1331300)
1. Setup experiment!
Simply setup the experiment. The Phywe experiment descriptions
describe precisely what you need and how to set it out!
Easy and fast setup thanks to
detailed experiment descriptions:
Photo and Circuit diagramm!
You can now choose between two possibilities!
A. Configure yourself!
2. Select measuring parameters!
Simply select measuring devices in the software,
define measurement parameters and off you go!
B. Open preset experiment
The correct measuring parameters are
automatically loaded.
Convenient and reliable
measurement through preset
measuring parameters!
3. Start measurement!
During the measurement you can choose between analogue
display, digital display and diagram.
You can of course combine all three if you want!
4. Analysis of measurement!
Numerous analysis tools provide you
with many analysis, display and
calculation possibilities!
11
Physics: Experiments Mechanics
Exp-Nr.
Experiment description
P1330100
Frequency of a spring pendulum with Cobra3 BASIC-UNIT
P1330200
Frequency of a thread pendulum with Cobra3 BASIC-UNIT
P1336900
Free fall with a screen with Cobra3 BASIC-UNIT
P1337000
The path-time law for free fall with the falling sphere apparatus with Cobra3 BASIC-UNIT
P1337100
Uniform, linear, unaccelerated motion with Cobra3 BASIC-UNIT
P1337200
Force-free, linear motion with Cobra3 BASIC-UNIT
P1337300
Uniformly accelerated, linear motion, Newton`s 2nd law with Cobra3 BASIC-UNIT
P1337400
The elastic collision with Cobra3 BASIC-UNIT
P1337500
The inelastic collision with Cobra3 BASIC-UNIT
P1337600
Frequency of a thread pendulum with Cobra3 BASIC-UNIT
P1337700
Pendulum oscillations-variable g pendulum with Cobra3 BASIC-UNIT
P1337800
The harmonic oscillation of helical springs-parallel and series connection of spring with Cobra3 BASIC-UNIT
P1337900
Dependence of the oscillation period of a leaf spring on the pendulum length & pendulum mass with Cobra3 BASIC-UNIT
P1338000
Moment of inertia of different bodies:disc,solid and hollow cylinder - Steiner`s law . with Cobra3 BASIC-UNIT
P1338100
Uniform rotary motion with Cobra3 BASIC-UNIT
P1338200
Uniform, accelerated rotational motion, moment of inertia with Cobra3 BASIC-UNIT
1) P2130111
Hooke's law with Cobra3 BASIC-UNIT
1) P2130311
Newton`s 2nd law / Air track with Cobra3 BASIC-UNIT
1) P2130315
Newton’s 2nd law / Demonstration dynamics and motion track with Cobra3 BASIC-UNIT
1) P2130511
Laws of collision / Air track with Cobra3 BASIC-UNIT
1) P2130515
Laws of collision / Demonstration dynamics and motion track with Cobra3 BASIC-UNIT
1) P2130711
Free fall with Cobra3 BASIC-UNIT
1) P2131311
Moment of inertia and angular acceleration with Cobra3 BASIC-UNIT
1) P2131315
Moment of inertia and angular acceleration with Cobra3 BASIC-UNIT
1) P2131611
Centrifugal force with Cobra3 BASIC-UNIT
1) P2132311
Variable "g" pendulum with Cobra 3 with Cobra3 BASIC-UNIT
1) P2132511
Coupled Pendula with Cobra3 BASIC-UNIT
1) P2132611
Harmonic oscillations of spiral springs -Spring linked in parallel and series with Cobra3 BASIC-UNIT
1) P2132711
Forced Oscillations -Pohl`s Pendulum with Cobra3 BASIC-UNIT
1) P2132811
Moments of inertia of different bodies / Steiner`s theorem with Cobra3 BASIC-UNIT
1) P2140611
Surface tension by the pull-out method with Cobra3 BASIC-UNIT
1) P2150311
Velocity of sound in air and in metal rods with Cobra 3 with Cobra3 BASIC-UNIT
1) P2150411
Acoustic Doppler effect with Cobra3 BASIC-UNIT
1) P2150811
Resonance frequencies of Helmholtz resonators with Cobra3 BASIC-UNIT
1) P2150911
Interference of acoustic waves, stationary waves and diffractio n at a slot with Cobra3 BASIC-UNIT
1) P2152111
Determination of the velocity with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Uniformly accelerated, linear motion, Newton´s 2nd law
P1337300 Measurement of: Distance, time, velocity, acceleration
The path-time law for linear movement with uniform
acceleration is a parabola in the path-time coordinate
system. The velocity-time law states that the velocity of
a body is proportional to the time. The acceleration is a
straight line that runs parallel to the time axis. If the
acceleration is achieved by a mass falling in the Earth´s
gravitational field, the law of conservation of energy
applies. This law states that a any point in time the sum
of the potential energy of the falling mass and the kinetic
energy of the acceleration is constant.
Phywe Advantage:
• very good measuring results with this nearly frictionless
air track
• 1 MHz time resolution for digital inputs
12
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 translation/rotation
Light barrier, compact
Air track rail
Blower 230V/50Hz
Pressure tube, l= 1.5 m
Glider for air track
Starter system
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14512.61
11207.20
11202.17
13770.97
11205.01
11202.02
11202.13
Quantity
1
1
1
1
1
1
1
1
1
1
Physics: Experiments Mechanics
Coupled pendula
P2132511 Measurement of: Amplitude, periodic time
Two equal gravity pendula with a particular characteristic
frequency are coupled by a "soft" spiral spring. The
amplitudes of both pendula are recorded as a function
of time for various vibrational modes and different
coupling factors using a y/t recorder. The coupling
factors are determined by different methods.
Material list
Pendulum w. recorder connection
Helical spring, 3 N/m
Rod with hook
Weight holder f. slotted weights
Slotted weight, 10 g, black
Capacitor, 10 mF/35 V
Cobra3 Basic Unit
Power supply 12 V
Cobra3 Universal writer software
RS 232 data cable
Power supply 0-12 V DC/6 V, 12 V AC
+ other laboratory material
Art.No.
02816.00
02220.00
02051.00
02204.00
02205.01
39105.28
12150.00
12151.99
14504.61
14602.00
13505.93
Quantity
2
1
1
1
5
2
1
1
1
1
1
Phywe Advantage:
• 2 galvanically isolated analog inputs
• online registration of oscillation
The harmonic oscillation of helical springs – parallel and series connection of springs
P1337800 Measurement of: Time, Vibration
From the period of the oscillation and the suspended
mass, the spring constant D is determined for varying
experimental arrangements.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Softw. Cobra3 translat./rotation
Light barrier, compact
Tripod base -PASSSupport rod-PASS-,square,l=1000mm
Stand tube
Rod with hook
Right angle clamp -PASSHelical springs, 3N/m, 10 pcs
Helical spring, 20 N/m
Connecting cord,1000 mm, red
Connecting cord,1000 mm, blue
Connecting cord,1000 mm, yellow
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14512.61
11207.20
02002.55
02028.55
02060.00
02051.00
02040.55
02220.03
02222.00
07363.01
07363.04
07363.02
Quantity
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
Phywe Advantage:
•1 MHz time resolution for digital inputs
• Limited 5 V voltage output for Light barrier
(undestructible)
13
Physics: Experiments Acoustics
Exp.No.
Experiment description
P1336000
Measurement of frequency of tuning forks, detuning of tuning forks with Cobra3 BASIC-UNIT
P1336100
Investigation of the natural oscillation of columns of air with Cobra3 BASIC-UNIT
P1336200
Measurement of the speed of sound in air with Cobra3 BASIC-UNIT
P1336300
Measurement of the speed of sound in diffent gases with Cobra3 BASIC-UNIT
P1336400
Measurement of the speed in metal rods with Cobra3 BASIC-UNIT
P1336500
Acoustical Doppler effect with Cobra3 BASIC-UNIT
P1361500
Investigation of beats with Cobra3 BASIC-UNIT
P1361900
Influence of damping on the spectrum of the characteristic oscillations of air columns with Cobra3 BASIC-UNIT
P1362000
Characteristic oscillations in cavity resonators - Hemholtz's resonators with Cobra3 BASIC-UNIT
P1362100
Tone analysis with Cobra3 BASIC-UNIT
P1362200
Oscillations in metal plates with Cobra3 BASIC-UNIT
P1362300
Speech analysis with Cobra3 BASIC-UNIT
P1362800
Signal filtration - elimination of background noises with Cobra3 BASIC-UNIT
P1362900
Determination of the speed of sound in air - travel time measurement between two microphones with Cobra3 BASIC-UNIT
P1363000
Acoustic spacial orientation with Cobra3 BASIC-UNIT
1) P2150515
Chladni figures with FG-Module with Cobra3 BASIC-UNIT
1) P2150615
Velocity of sound using Kundt’s tube with FG-Module with Cobra3 BASIC-UNIT
1) P2150715
Wavelength and frequencies, Quincke tube with FG-Module with Cobra3 BASIC-UNIT
1) P2152115
Determination of ultrasonic velocity (sonar principle) with Cobra3 BASIC-UNIT
1) P2152415
Ultrasonic Doppler effect with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Characteristic oscillations in cavity resonators – Helmholtz´s resonators –
P1362000 Measurement of: Sound amplitude, eigenfrequency
It should be shown that cavity resonators are acoustic
resonators with a characteristic frequency that is only
a function of their geometry. Due to their high resonator
quality, the normal ambient background noise is sufficient
to excite an undamped harmonic oscillation, which can
then be detected by a sound probe inside the resonator.
Phywe Advantage:
• online frequency analysis (Fourieranalysis)
• make your measurments audible
(sound card necessary)
14
Material list
Cobra3 BASIC-UNIT
Cobra3 Power supply
Data cable, RS232
Software Cobra3 Frequency analysis
Microphone with amplifier
Tripod "PASS"
Support rod, l = 50 cm
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14514.61
03543.00
02002.55
02032.00
Quantity
1
1
1
1
1
1
1
Physics: Experiments Acoustics
Determination of the velocity of sound (sonar principle)
P2152115 Measurement of: Sound amplitude, delay-time
An ultrasonic transmitter emits sound pulses onto a
reflector, from which recording of them by a receiver
shows a time delay. The velocity of sound is calculated
from the path length and transmission time of the sound
pulses.
1. Determine transmission times for different distances
apart of the transmitter and the receiver.
2. Plot a graph of the path lengths of the sound pulses
against their transmission time.
3. Determine the velocity of sound from the graph.
Material list
Ultrasonic unit
Power supply f. ultrasonic unit
Ultrasonic transmitter on stem
Ultrasonic receiver on stem
Cobra 3 BASIC-UNIT
Power supply, 12 V
RS 232 data cable
Barrel base PASS
Screen metal, 30x30 cm
Measuring tape, l = 2 m
Meter scale, l = 1000 mm
Screened cable, BNC, l = 75 cm
Adapter, BNC-socket/4 mm plug pair
Measure Software Universal writer
+ other laboratory material
Art.No.
13900.00
13900.99
13901.00
13902.00
12150.00
12151.99
14602.00
02006.55
08062.00
09936.00
03001.00
07542.11
07542.27
14504.61
Quantity
1
1
1
1
1
1
1
3
1
1
1
2
2
1
Phywe Advantage:
• for analog inputs 500 kHz sampling rate
provides great results
Ultrasonic Doppler-Effect
P2152415 Measurement of: Velocity, frequency, frequency shift
If a source of sound is in motion relative to its medium
of propagation, the frequency of the waves that are
emitted is displaced due to the Doppler effect.
The frequency changes are measured and analysed for
different relative velocities of source and observer.
Material list
Art.No.
Ultrasonic unit
13900.00
Power supply f. ultrasonic unit, 5 VDC, 12 W 13900.99
Ultrasonic transmitter on stem
13901.00
Ultrasonic receiver on stem
13902.00
Sound head
03524.00
Car, motor driven
11061.00
Attachment for car
11061.02
Track, l = 900 mm
11606.00
Cobra3 BASIC-UNIT
12150.00
Power supply, 12 V12151.99
RS232 data cable
14602.00
Cobra3 Timer / Counter Software
14511.61
Light barrier, compact
11207.20
+ other laboratory material
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
1
Phywe Advantage:
• 4 MHz time resolution for digital inputs
• limited 5 V voltage output for light barrier
(undestructible)
15
Physics: Experiments Thermodynamics
Exp.No.
Experiment description
P1349100
Specific heat capacity of water with Cobra3 BASIC-UNIT
P1349200
Specific evaporation heat of water with Cobra3 BASIC-UNIT
P1349300
Specific heat capacity of liquids with Cobra3 BASIC-UNIT
P1349400
Specific heat capacity of solid bodies with Cobra3 BASIC-UNIT
P1349500
Specific condensation heat of water with Cobra3 BASIC-UNIT
P1349600
Specific melting heat of ice with Cobra3 BASIC-UNIT
P1349700
Specific dissolution heat of salts with Cobra3 BASIC-UNIT
P1349800
Specific combustion heat of spirit with Cobra3 BASIC-UNIT
P1349900
Volume expansion of gases with Cobra3 BASIC-UNIT
P1350000
Gay-Lussas Law with Cobra3 BASIC-UNIT (Software Pressure)
P1350100
Amontons Law with Cobra3 BASIC-UNIT
P1350200
Boyle's and Mariotte's Law with Cobra3 BASIC-UNIT (Software Pressure)
P1364100
Gay-Lussac's law with Cobra3 BASIC-UNIT (Software Gas laws)
P1364200
Charles' (Amontons') law - variant A with Cobra3 BASIC-UNIT
P1364300
Charles' (Amontons') law - variant B with Cobra3 BASIC-UNIT
P1364415
Boyle and Mariotte's law with Cobra3 BASIC-UNIT (Software Gas laws)
1) P2320211
Heat capacity of gases with Cobra3 BASIC-UNIT
1) P2330111
Heat capacity of metals with Cobra3 BASIC-UNIT
1) P2350115
Stefan-Boltzmann’s law of radiation with Cobra3 BASIC-UNIT
1) P2360415
Stirling engine with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Specific heat capacity of solid bodies
P1349400 Measurement of: Temperature
A calorimeter is filled with water at room temperature.
Metallic bodies are heated in a water bath and are put
in the calorimeter, the temperature of the mixture is
noted down.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Temperature
Measuring module, NiCrNi,330C
Immersion probe NiCr-Ni,-50/1000C
H-base -PASSSupport rod,stainl.steel, 600 mm
Bosshead
Universal clamp
Ring with Bosshead, d =10 cm
Wire gauze 160x160mm,ceramic cen.
Metal bodies, set of 3
Calorimeter vessel, 500 ml
Glass beaker,short,400 ml
Glass beaker,short, 600 ml
Agitator rod
Pipette, with rubber bulb
+ other laboratory material
16
Art.No.
12150.00
12151.99
14602.00
14503.61
12104.00
13615.03
02009.55
02037.00
02043.00
37715.00
37701.01
33287.01
04406.00
04401.10
36014.00
36015.00
04404.10
64701.00
Quantity
1
1
1
1
1
1
1
2
2
2
1
1
3
1
1
1
1
1
Physics: Experiments Thermodynamics
Gay-Lussac´s Law (with Software Cobra3 Pressure)
P1350000 Measurement of: Temperature, pressure
The general gas-equation describes the relationship between
pressure, volume and temperature of an enclosed gas volume.
A gas syringe is used for heating a gas volume at constant
pressure, which is tempered in a glass jacket with the help of
a water bath. Contrary to the experiment "volume expansion
of gases", the gas injector is sealed in this experiment with
motor oil and the software "Pressure" is used for simultaneously
measuring the pressure, temperature and volume (number of
the measurement value). The pressure measurement serves
for checking a constant pressure during the measurement and
for calculating the quantity pV/T during evaluation.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3, Pressure
Measuring module, pressure
Modulconverter Cobra3
Cobra3,sensor-10..120 oC
Gas syringe, 100 ml
Glass jacket
Magn.stirring bar 30 mm, cyl.
Heating apparatus
H-base -PASSSupport rod, stainl.steel, 250mm
Bosshead
Universal clamp
Universal clamp with joint
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14510.61
12103.00
12150.04
12120.00
02614.00
02615.00
46299.02
32246.93
02009.55
02031.00
02043.00
37715.00
37716.00
Quantity
1
1
2
1
1
1
1
1
1
1
1
1
2
3
2
1
Phywe Advantage:
• very quick, easy and comfortable set-up with the
Phywe Glass jacket system
Stirling engine
P2360415 Measurement of: Temperature, volume, pressure, time
The Stirling engine is submitted to a load by means of
an adjustable torque meter, or by a coupled generator.
Rotation frequency and temperature changes of the
Stirling engine are observed. Effective mechanical energy
and power, as well as effective electrical power, are
assessed as a function of rotation
frequency. The amount of energy converted to work per
cycle can be determined with the assistance of the pV
diagram. The efficiency of the Stirling engine can be
estimated.
Material list
Stirling engine, transparent
Motor/generator unit
Torque meter
Chimney for stirling engine
Meter f. stirling engine, pVnT
Sensor unit pVn for stirl. eng.
Screened cable, BNC, l = 750 mm
Thermocouple NiCr-Ni, sheathed
Raw alcohol for burning, 1000 ml
Adapter, BNC-socket/4 mm plug pair
Cobra3 BASIC-UNIT
Power supply, 12 VRS232 data cable
Cobra3 Software Universal Writer
Art.No.
04372.00
04372.01
04372.02
04372.04
04371.97
04371.00
07542.11
13615.01
31150.70
07542.27
12150.00
12151.99
14602.00
14504.61
Quantity
1
1
1
1
1
1
2
2
1
2
1
1
1
1
Phywe Advantage:
• 200 kHz sampling rate for 2 analog inputs simultaneously
• with Software measure display und analysis of relations
possible
17
Physics: Experiments Electricity
Exp.No.
Experiment description
P1330300
Ohm's Law with Cobra3 BASIC-UNIT
P1330400
Temperature dependence of the resistance of pure metals. with Cobra3 BASIC-UNIT
P1330500
Characteristics of semi-conductor diodes with Cobra3 BASIC-UNIT
P1330600
Collector current-collector voltage characteristic of an NPN-transistor with Cobra3 BASIC-UNIT
P1330700
Second order conductors with Cobra3 BASIC-UNIT
P1330800
Switch-on current of a incandescent bulb with Cobra3 BASIC-UNIT
P1330900
Measurement of the work and power of an incandescent bulb with Cobra3 BASIC-UNIT
P1331000
Switch-on behaviour of a capacitance with Cobra3 BASIC-UNIT
P1331100
Switch-on behaviour of an inductivity with Cobra3 BASIC-UNIT
P1331200
Induction impulse with Cobra3 BASIC-UNIT
P1331300
Generation of an alternating current, rectification and filtration with Cobra3 BASIC-UNIT
P1331400
Efficiency of motor and generator with Cobra3 BASIC-UNIT
P1333000
Generation of an AC voltage, rectification and smoothing
P1336600
Measurement of the rebound time of a switch with Cobra3 BASIC-UNIT
P1336700
Current-voltage characteristic of a solar cell with Cobra3 BASIC-UNIT
P1361100
Single-valued and multiple-valued Fourier spectra with Cobra3 BASIC-UNIT
P1361200
Analysis of simple and composite sinusoidal signals with Cobra3 BASIC-UNIT
P1361300
Spectral analysis of different signal forms - sinusoidal, rectangular, triangular signals with Cobra3 BASIC-UNIT
P1361400
Spectral analysis of periodic spike pulses with Cobra3 BASIC-UNIT
P1361600
Determination of the non-linear distortion factor from the Fourier spectrum of distorted sinusoidal oscillations with Cobra3 BASIC-UNIT
P1361700
The Fourier spectrum of rectified, non-smoothed alternating currents with Cobra3 BASIC-UNIT
P1361800
Investigation of the characteristic oscillations of air columns with Cobra3 BASIC-UNIT
P1362400
Coupled electrical resonant circuits with Cobra3 BASIC-UNIT
P1362500
Forced oscillations of a non-linear electrical series resonance circuit - chaotic oscillation with Cobra3 BASIC-UNIT
P1362600
Analysis of Fourier series with Cobra3 BASIC-UNIT
P1362700
High-pass, low-pass, bandpass with Cobra3 BASIC-UNIT
P1363100
Switch rebound with Cobra3 BASIC-UNIT
P1363200
Phase relationships in a series resonant circuit with Cobra3 BASIC-UNIT
P1363300
Free damped oscillation with Cobra3 BASIC-UNIT
P1382400
The diode as rectifier with Cobra3 BASIC-UNIT
P1400200
The behavior of a coil on switching on - current and voltage over time with Cobra3 BASIC-UNIT
P1401400
Filter networks - The band-pass with Cobra3 BASIC-UNIT
P1402200
How a phototransistor functions with the Cobra3 BASIC-UNIT
P1402600
The generation of square pulse voltages by the operational amplifier with the Cobra3 BASIC-UNIT
1)
P2410115
Ohm's Law with FG-Module with Cobra3 BASIC-UNIT
1)
P2410615
Current balance / Force acting on a current-carrying conductor with Cobra3 BASIC-UNIT
1)
P2410915
Characteristic curves of semiconductors with FG-Module with Cobra3 BASIC-UNIT
1)
P2411315
Second order conductors. Electrolysis with FG-Module with Cobra3 BASIC-UNIT
1)
P2420215
Switch-on behaviour of a capacitor and inductivity with FG-Module with Cobra3 BASIC-UNIT
1)
P2420415
Coulomb’s law with Cobra3 BASIC-UNIT
1)
P2430215
Magnetic field of single coils / Biot-Savart’s law with Cobra3 BASIC-UNIT
1)
P2430315
Magnetic field of paired coils in Helmholtz arrangement with Cobra3 BASIC-UNIT
1)
P2430711
Ferromagnetic hysteresis with Cobra 3 with Cobra3 BASIC-UNIT
1)
P2440215
Magnetic induction with FG-Module with Cobra3 BASIC-UNIT
1)
P2440311
Inductance of solenoids with Cobra3 BASIC-UNIT
1)
P2440411
Coil in the AC circuit with Cobra3 BASIC-UNIT
1)
P2440515
Capacitor in the AC circuit with FG-Module with Cobra3 BASIC-UNIT
1)
P2440611
RLC Circuit with Cobra3 BASIC-UNIT
1)
P2440915
High-pass and low-pass filters with FG-Module with Cobra3 BASIC-UNIT
1)
P2441211
Induction impulse with Cobra3 BASIC-UNIT
1)
detailed scientific description (only in english)
Collector current-collector voltage characteristic of an NPN-transistor
P1330600 Measurement of: Current, voltage
The objective of the experiment is to determine the variations
of the collector current with the collector voltage for various
values of the base current intensity. Knowledge of these
dependencies is important for the comprehension of the voltage
amplification, the operating point setting, and dimensioning of
amplifier stages with transistors. In this experiment, the output
characteristics of an NPN transistor of type BC377 are to be
recorded.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Universal recorder
Power supply 0-12V DC/6V,12V AC
Digital multimeter
Potentiometer 1 kOhm, 0.4W, G2
Plug-in board,4mm plugs
Transistor BC337, base left, G3
Carbon resistor 47 kOhm, 1W, G1
+ other laboratory material
18
Art.No.
12150.00
12151.99
14602.00
14504.61
13505.93
07134.00
39103.04
06033.00
39127.20
39104.38
Quantity
1
1
1
1
1
1
1
1
1
1
Physics: Experiments Electricity
Inductance of solenoids
P2440311 Measurement of: Current, voltage, periodic time
A square wave voltage of low frequency is applied to
oscillatory circuits comprising coils and capacitors to
produce free, damped oscillations. The values of
inductance are calculated from the natural frequencies
measured, the capacitance being known.
Material list
Cobra3 BASIC-UNIT
Power supply, 12 V
RS 232 data cable
Cobra3 Universal writer software
Cobra3 Function generator module
Induction coil, 300 turns, dia. 40 mm
Induction coil, 300 turns, dia. 32 mm
Induction coil, 300 turns, dia. 25 mm
Induction coil, 200 turns, dia. 40 mm
Induction coil, 100 turns, dia. 40 mm
Induction coil, 150 turns, dia. 25 mm
Induction coil, 75 turns, dia. 25 mm
Coil, 1200 turns
PEK capacitor /case 1/ 1nF/ 500 V
PEK capacitor /case 1/ 470 pF/500 V
Vernier caliper
Measuring tape, l = 2 m
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
12111.00
11006.01
11006.02
11006.03
11006.04
11006.05
11006.06
11006.07
06515.01
39105.10
39105.07
03010.00
09936.00
Quantity
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Phywe Advantage:
• no oscilloscope necessary
• 500 kHz sampling rate for one analog input
Switch-on behaviour of a capacitance
P133100 Measurement of: Current, voltage, resistance, charge and discharge time
To measure the course of current strength and voltage
in a capacitance in the instant of switching on. The
capacitance is determined from the measurement curve.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Universal recorder
Connection box
On/off switch
Carbon resistor 5.6 kOhm, 1W, G1
Electr.capacitor 100microF/35V,G1
Connecting cord, 500 mm, red
Connecting cord, 500 mm, blue
Connecting cord, 250 mm, red
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
06030.23
06034.01
39104.28
39105.25
07361.01
07361.04
07360.01
Quantity
1
1
1
1
1
1
1
1
1
1
3
Phywe Advantage:
• 200 kHz sampling rate for 2 analog inputs
simultaneously
19
Physics: Experiments Electricity
Induction impulse
P1331200 Measurement of: Pulse duration, voltage
A permanent magnet falls through a coil at different
velocities. the induced voltage impulse is recorded. The
objective is two show that the integral over the induction
voltage is independent of the velocity, and thus is
constant. The magnetic flux of the permanent magnet
is to be calculated.
Phywe Advantage:
• 200 kHz sampling rate for 2 analog inputs
simultaneously
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Universal recorder
Light barrier, compact
Support rod, l = 600 mm
Bosshead
Tripod base -PASSUniversal clamp
Glass tube,diam 12mm l 300 mm
Coil holder
Coil, 600 turns, short
Magnet, d 8mm, l 60mm
Connecting cord, 500 mm, red
Connecting cord, 500 mm, blue
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
11207.20
02037.00
02043.00
02002.55
37715.00
45126.01
06528.00
06522.01
06317.00
07361.01
07361.04
Quantity
1
1
1
1
1
1
3
1
1
1
1
1
1
2
2
Coulomb’s law
P2420415 Measurement of: Charge, force
A small electrically charged ball is positioned at a certain
distance in front of a second charged ball. The force
between these balls is measured as a function of their
charge and distance (Coulomb’s law). For the
measurements a sensitive force sensor and an
electrometer amplifier are used.
Phywe Advantage:
• Due to constant amount of charge measurements
easy reproducable (High voltage)
20
Material list
Cobra3 BASIC-UNIT
Cobra3 Force/Tesla software
Measuring module Newton
Newton sensor
Insulating Bar for Force Sensor
Plug with socket and crosshole, 2
Conductor ball, d = 40 mm
Power supply, 12 VRS232 cable
High voltage supply unit, 0-10 kV
Electrometer Amplifier
Capacitor 10nF/ 250V, G1
+ other laboratory material
Art.No.
12150.00
14515.61
12110.00
12110.01
12110.01
07206.01
06237.00
12151.99
14602.00
13670.93
13621.00
39105.14
Quantity
1
1
1
1
1
1
2
1
1
1
1
1
Physics: Experiments Optics
Exp.No.
Experiment description
P1331500
Dependence of the luminous intensity on the distance with Cobra3 BASIC-UNIT
1) P2230415
Determination of diffraction intensity due to multiple slits and grids with Cobra3 BASIC-UNIT
1) P2240211
Photometric law of distance with Cobra3 BASIC-UNIT
1) P2250315
Fresnel’s equations – Theory of reflection with Cobra3 BASIC-UNIT
1) P2260511
LDA -Laser Doppler Anemometry with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
LDA – Laser Doppler Anemometry
P2260511 Measurement of: Time, voltage, frequency shift
Small particles in a current pass through the LDA
measuring volume and scatter the light whose frequency
is shifted by the Doppler effect due to the particle
movement. The frequency change of the scattered light
is detected and converted into a particle or flow velocity.
Measurement of the light-frequency change of individual
light beams which are reflected by moving particles.
Material list
Base plate with rubber feet
HeNe laser, 5 mW
Power supply and switch for 5 mW laser
Cobra3 BASIC-UNIT
Power supply, 12 VData cable, RS232
Software Cobra3-Frequency Analyzer
Surface mirror, 30 x 30 mm
Magnetic base
Plate holder
Lens with mount, f = +100 mm
Lens with mount, f = +50 mm
Lens with mount, f = +20 mm
Iris diaphragm
Beam splitter, 50:50
Silicon photo-detector with int. amplifier
Control unit for photo-detectors
Prism holder with table
Pinhole diaphragm, 30 mm
+ sonstiges Experimentiermaterial
Art.No.
08700.00
08701.00
08702.93
12150.00
12151.99
14602.00
14514.61
08711.01
08710.00
08719.00
08021.01
08020.01
08018.01
08045.00
08741.00
08735.00
08735.99
08725.00
08743.00
Quantity
1
1
1
1
1
1
1
2
8
1
1
1
1
1
1
1
1
1
1
Phywe Advantage:
• online frequency analysis
• magnetic components enable easy adjustment
Dependence of the luminous intensity on the distance
P1331500 Measurement of: Luminous intensity, voltage
The luminous intensity is a function of the distance of
the light sensor from the light source. The law for point
light sources on which this is based should be determined.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Universal recorder
Power supply 0-12V DC/6V,12V AC
Stand tube
Distributor
Barrel base -PASSBench clamp -PASSMeter scale, demo. l=1000mm
Photo diode, G1
Carbon resistor 470 Ohm, 1W, G1
Filament lamp 6V/5A, E14
Lamp holder E 14,on stem
Connecting cord, 500 mm, red
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
13505.93
02060.00
06024.00
02006.55
02010.00
03001.00
39119.01
39104.15
06158.00
06175.00
07361.01
Quantity
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
21
Physics: Experiments Physical Structure of Matter
Exp.No.
Experment description
P1363400
Range of alpha particles in the air with Cobra3 BASIC-UNIT
P1363500
Mean range of beta radiation in air with Cobra3 BASIC-UNIT
P1363600
Absorption of electrons (or positrons) in thin layers of matter with Cobra3 BASIC-UNIT
P1363700
The quantal flux of gamma radiation in air with Cobra3 BASIC-UNIT
P1363800
Absorption of gamma quanta (or electrons) as a function of material density with Cobra3 BASIC-UNIT
P1363900
Law of radioactive decay with Cobra3 BASIC-UNIT
P1364000
Radioactive equilibrium with Cobra3 BASIC-UNIT
1) P2520111
Half-live radioactive equilibrium with Cobra3 BASIC-UNIT
1) P2520211
Law of radioactive decay with Cobra33 with Cobra3 BASIC-UNIT
1) P2520311
Poisson`s distribution and Gaussian distribution of radio-active decay with Cobra3 BASIC-UNIT
1) P2522111
Rutherford experiment with Cobra3 BASIC-UNIT
1) P2522211
Fine structure of alpha-spectrum of 241Am with Cobra3 BASIC-UNIT
1) P2522311
Study of the alpha-energies of 226Ra with Cobra3 BASIC-UNIT
1) P2522411
Energy loss of alpha particles in gases with Cobra3 BASIC-UNIT
1) P2524111
Law of distance and absorption of gamma or beta rays with Cobra3 BASIC-UNIT
1) P2524211
Energy Dependence of the gamma-absorption Coefficient with Cobra3 BASIC-UNIT
1) P2524411
Compton effect with Cobra3 BASIC-UNIT
1) P2524511
Internal conversion in 137mBa with Cobra3 BASIC-UNIT
1) P2524611
Photonuclear cross-section / Compton scattering cross-section with Cobra3 BASIC-UNIT
1) P2524711
X-ray fluorescence and Moseley's law with Cobra3 BASIC-UNIT
1) P2530111
Hall effect in p-germanium with Cobra3 BASIC-UNIT
1) P2530211
Hall effect in n-germanium with Cobra3 BASIC-UNIT
1) P2530411
Band gap of germanium with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Range of a -particles in the air
P1363400 Measurement of: Radioactivity
The particle flux density of -particles having a specific
energy emitted by an -radiation source has already
decreased to zero at a slight distance from the source.
There is a relatively sharply defined range for
monoenergetic -radiation in air.
Phywe Advantage:
• quick, easy and safe set-up with magnetic components
22
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Radioactivity
Counter tube module
Base plate for radioactivity
Counter tube holder on fix.magn.
Source holder on fixing magnet
Counter tube, type A, BNC
Screened cable, BNC, l 300 mm
Rule, plastic, 200 mm
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14506.61
12106.00
09200.00
09201.00
09202.00
09025.11
07542.10
09937.01
Quantity
1
1
1
1
1
1
1
1
1
1
1
Physics: Experiments Physical Structure of Matter
Absorption of
-quanta (or electrons) as a function of material density
P1363800 Measurement of: Radioactivity
The procedure and evaluation are shown here in an
exemplary experiment for -quanta; however, they can
also be performed in an analogous manner for electrons.
In the latter case, the Sr-90 source rod from the
radioactive sources set (09047.50) and the absorption
plate set for b-radiation (09024.00) must be used. The
-quanta emitted by a radioactive -source (Co-60) are
absorbed in solid material. The attenuation of the quantum
flux resulting from this is, on the one hand, a function
of the distance covered or the layer thickness of a
material layer that is located in the radiation field and,
on the other hand, of the density of the material that is
penetrated. The particle flux decreases exponentially
with the layer thickness; the attenuation coefficient m
increases proportionally to the density r of the absorption
material.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Radioactivity
Counter tube module
Base plate for radioactivity
Counter tube, type A, BNC
Radioactive sources, set
Absorption plates f. beta-rays
Absorption material, lead
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14506.61
12106.00
09200.00
09025.11
09047.50
09024.00
09029.01
Quantity
1
1
1
1
1
1
1
1
1
1
Hall effect in p-germanium
P2530111 Measurement of: Magnetic field, voltage, current, resistance, temperature
The resistivity and Hall voltage of a rectangular germanium
sample are measured as a function of temperature and
magnetic field. The band spacing, the specific conductivity,
the type of charge carrier and the mobility of the charge
carriers are determined from the measurements.
Material list
Hall effect module
Hall effect, p-Ge, carrier board
Coil, 600 turns
Iron core, U-shaped, laminated
Pole pieces, plane, 30x30x48 mm, 2
Hall probe, tangent., prot. cap
Power supply 0-12 V DC/6 V, 12 V AC
Tripod base -PASSSupport rod -PASS-, square, l = 250 mm
Right angle clamp -PASSConnecting cord, l = 500 mm, red
Connecting cord, l = 500 mm, blue
Connecting cord, l = 750 mm, black
Cobra3 BASIC-UNIT
Art.No.
11801.00
11805.01
06514.01
06501.00
06489.00
13610.02
13505.93
02002.55
02025.55
02040.55
07361.01
07361.04
07362.05
12150.00
Quantity
1
1
2
1
1
1
1
1
1
1
2
1
2
1
Phywe Advantage:
The Hall module offers:
• central power supply for the sample and the sample heater
• sample heater with fully automatic temperature control system
23
Chemistry: Experiments Food Chemistry
Exp.No.
P1318700
P1318800
P1318900
P1329700
P1370530
P1370540
P1370630
P1370640
P1370730
P1370740
P1370830
P1370840
P1370930
P1370940
P1371030
P1371040
P1371130
P1371140
P1371230
P1371240
P1371330
P1371340
P1371430
P1371440
P1371530
P1371540
Experiment description
Automatic pH titration with a motor piston burette with Cobra3 BASIC-UNIT
Automatic pH titration with a light barrier with Cobra3 BASIC-UNIT
Manually operated pH-Titration with Cobra3 BASIC-UNIT
Analytical gas chromatography of butter and margarine with Cobra3 BASIC-UNIT
The manual titration of citric acid with Cobra3 BASIC-UNIT
The manual titration of citric acid with Cobra3 CHEM-UNIT
The automatic titration of ordinary vinegar with Cobra3 BASIC-UNIT
The automatic titration of ordinary vinegar with Cobra3 CHEM-UNIT
Determination of the phosporic acid content of a soft drink with Cobra3 BASIC-UNIT
Determination of the phosporic acid content of a soft drink with Cobra3 CHEM-UNIT
The pH and degree of acidity of coffee with Cobra3 BASIC-UNIT
The pH and degree of acidity of coffee with Cobra3 CHEM-UNIT
Determination of the content of fruit acid in juices and wine with Cobra3 BASIC-UNIT
Determination of the content of fruit acid in juices and wine with Cobra3 CHEM-UNIT
Titration curves of fresh milk and sour milk with Cobra3 BASIC-UNIT
Titration curves of fresh milk and sour milk with Cobra3 CHEM-UNIT
Changes in pH during the aging of milk (souring) with Cobra3 BASIC-UNIT
Changes in pH during the aging of milk (souring) with Cobra3 CHEM-UNIT
The buffering properties of foods with Cobra3 BASIC-UNIT
The buffering properties of foods with Cobra3 CHEM-UNIT
Determination of the calcium carbonate content of egg shell with Cobra3 BASIC-UNIT
Determination of the calcium carbonate content of egg shell with Cobra3 CHEM-UNIT
Determination of the common salt content of meat broth with Cobra3 BASIC-UNIT
Determination of the common salt content of meat broth with Cobra3 CHEM-UNIT
Chloride in mineral water with Cobra3 BASIC-UNIT
Chloride in mineral water with Cobra3 CHEM-UNIT
Determination of the content of fruit acid in juices and wine
P1370940 Measurement of: Temperature, pH, conductivity
Fruit juices and wine contain so-called fruit acids (malic
acid, citric acid, tartaric acid etc.) and have pH's which
lie between 2.7 and 3.8. The fruit acids content of juices
and wine can be ascertained by a determination of their
titratable total acid.
Phywe Advantage:
• CHEM-UNIT: The entire chemistry in just one box!
• The CHEM-UNIT can also control a motor piston burette
• Titrations also manual or with drop counter possible
24
Material list
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 CHEM-UNIT
pH-electrode, plastic, refillable, BNC
Immersion probe NiCr-Ni, teflon, 300 °C
Cable CHEM-UNIT/Motor piston burette
Motor piston burette, univeral, 50 ml
Magnetic stirrer Mini/MST
Magn.stirring bar 30mm, cyl.
Rubber stopper, d = 18/14mm, 1 hole
Volumetric pipette, 25 ml
Volumetric pipette, 5 ml
Pipettor
Wash bottle, plastic, 500 ml
+ Chemicals and other laboratory material
Art.No.
12153.00
12151.99
14602.00
14520.61
46266.15
13615.05
36501.01
36499.93
47334.93
46299.02
39254.01
36580.00
36577.00
36592.00
33931.00
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Chemistry: Experiments Electrochemistry
Exp.No.
Experiment description
P1331800
Electrolysis of copper sulphate solutions with Cobra3 BASIC-UNIT
P1331900
The electrochemical series of metals with Cobra3 BASIC-UNIT
P1332000
Electric potential of a concentration element with Cobra3 BASIC-UNIT
1) P3060111
Charge transport in solids with Cobra3 BASIC-UNIT
1) P3060211
Charge transport in liquids with Cobra3 BASIC-UNIT
1) P3060240
Charge transport in liquids mit der Cobra3 CHEM-UNIT
1) P3060511
Temperature dependance of conductivity with Cobra3 BASIC-UNIT
1) P3060540
Temperature dependance of conductivity mit der Cobra3 CHEM-UNIT
1) P3060611
Conductivity of strong and weak electrolytes with Cobra3 BASIC-UNIT
1) P3060640
Conductivity of strong and weak electrolytes with Cobra3 CHEM-UNIT
1) P3060711
Conductivity titration with Cobra3 BASIC-UNIT
1) P3060740
Conductivity titration mit der Cobra3 CHEM-UNIT
1) P3061311
Potentiometric titration with Cobra3 BASIC-UNIT
1) P3061340
Potentiometric titration mit der Cobra3 CHEM-UNIT
1) P3061411
Precipitation titration with Cobra3 BASIC-UNIT
1) P3061440
Precipitation titration mit der Cobra3 CHEM-UNIT
1) P3061611
Titration curves and buffering capacity with Cobra3 BASIC-UNIT
1) P3061640
Titration curves and buffering capacity mit der Cobra3 CHEM-UNIT
1) P3061711
Potentiometric pH titration (Phosphoric acid in soft drinks) with Cobra3 BASIC-UNIT
1) P3061740
Potentiometric pH titration (Phosphoric acid in soft drinks) mit der Cobra3 CHEM-UNIT
1) P3061811
Electrode kinetics:The hydrogen overpotential of metals with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
P3060540 Measurement of: Temperature, conductivity
Materialliste
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, RS232
Software Cobra3 CHEM-UNIT
Conductivity probe
Immersion probe NiCr-Ni, Teflon, 300°C
Magnetic heating stirrer
Magnetic stirrer bar, l = 25 mm, oval
Electronic temperature control
Spring balance holder
Support rod, l = 750 mm, M10 thread
Support rod with hole, l = 100 mm
Right angle clamp
Universal clamp
Condenser, Dimroth type GL 25/12
Cristallizing dish, 560 ml
Precision balance, LE623P
Funnel, glass, do = 55 mm
Wash bottle, 500 ml
Glass beaker, 250 ml, tall
Glass rod, l = 300 mm, d = 8 mm
+ Chemicals and other laboratory material
Art.Nr.
12153.00
12151.99
14602.00
14520.61
18151.02
13615.05
35720.93
46300.01
35721.00
03065.20
02023.20
02036.01
37697.00
37715.00
35815.15
46244.00
48852.93
34457.00
33931.00
36004.00
40485.06
Menge
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
Phywe Advantage:
• clearly arranged set-up
• comfortable follow-up of the experimental process
25
Chemistry: Experiments Thermochemistry/Calorimetry
Exp.No.
Experiment description
1) P3020311
Heat capacity of gases with Cobra3 BASIC-UNIT
1) P3020411
Determination of the enthalpy of vaporisation of liquids with Cobra3 BASIC-UNIT
1) P3020611
Determination of the mixing enthalpy of binary fluid mixtures with Cobra3 BASIC-UNIT
1) P3020711
Determination of the hydration enthalpy of an electrolyte (solution enthalpy) with Cobra3 BASIC-UNIT
1) P3020811
Determination of the enthalpy of neutralisation with Cobra3 BASIC-UNIT
1) P3020911
Determination of the melting enthalpy of a pure substance with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
P3020411 Measurement of: Temperature, energy
Phywe Advantage:
• accurate measurement of temperature and energy provides
the determination of different enthalpies
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, RS232
Temperature measuring module Pt100
Software Cobra3 Temperature
Temperature probe Pt100
Calorimeter, transparent
Evaporation vessel for calorimeter
Heating coil with sockets
Work and power meter
Universal power supply
Connection cable, l = 500 mm, black
Magnetic heating stirrer
Magnetic stirrer bar, l = 30 mm, oval
Separator for magnetic bars
Support rod, l = 500 mm, M10 thread
Right angle clamp
Universal clamp
Retort stand, h = 500 mm
Precision balance, LE623P
Stop watch, digital, 1/100 s
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14602.00
12102.00
14503.61
11759.01
04402.00
04405.00
04450.00
13715.93
13500.93
07361.05
35720.93
35680.04
35680.03
02022.20
37697.00
37715.00
37694.00
48852.93
03071.01
Quantity
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
3
3
1
1
1
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2 A
Temperature measuring module Pt100
Software Cobra3 Temperature
Temperature probe Pt100
Calorimeter, transparent
Delivery pipette, 50 ml
Pipettor
Rubber bulb, double
Heating coil with sockets
Work and power meter
Universal power supply
Magnetic heating stirrer
Laboratory balance,
with data output, 800/1600/3200 g
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
12102.00
14503.61
11759.01
04402.00
04402.10
36592.00
39287.00
04450.00
13715.93
13500.93
35720.93
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
1
48803.93
1
P3020811 Measurement of: Temperature, energy
26
Chemistry: Experiments Chemical Kinetics
Exp.No.
Experiment description
1) P3031811
Electrode kinetics:The hydrogen overpotential of metals with Cobra3 BASIC-UNIT
1) P3050811
Conductometric measurement of the saponification of esters with Cobra3 BASIC-UNIT
1) P3050840
Conductometric measurement of the saponification of esters mit der Cobra3 CHEM-UNIT
1) P3050911
Enzyme kinetics: determination of Michaelis-Menton constant with Cobra3 BASIC-UNIT
1) P3050940
Enzyme kinetics: determination of Michaelis-Menton constant mit der Cobra3 CHEM-UNIT
1) P3051011
Inhibition and poisoning of enzymes with Cobra3 BASIC-UNIT
1) P3051040
Inhibition and poisoning of enzymes mit der Cobra3 CHEM-UNIT
1) detailed scientific description (only in english)
Electrode kinetics: The hydrogen overpotential of metals
P3061811 Measurement of: Current, voltage
Electrode polarization and the presence of overpotentials are
important concepts in understanding electrode processes.
They underlie the fact that galvanic cells always deliver current
at less than the equilibrium e.m.f. and that an applied potential
greater than the equilibrium e.m.f. is required in order to drive
a reaction in an electrolytic cell.
The current-potential curve for the electrolysis of a 1 M
hydrochloric acid solution is recorded using graphite rod
electrodes, and the decomposition voltage is determined. By
replacing the graphite rod cathode with a series of different
metal rod electrodes, the overpotentials for hydrogen evolution
at these metals can be compared.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, RS232
Software Cobra 3 Universal writer
Current probe 6A
Power supply, universal
Retort stand, h = 750 mm
Holder for 2 electrodes
Laboratory thermometer, –10... +50°C
Carbon electrodes, d = 7 mm, l = 150 mm
Copper electrode, d = 8 mm, l = 150 mm
Iron electrode, d = 8 mm, l = 150 mm
Nickel electrode, d = 8 mm, l = 150 mm
Zinc electrode, d = 8 mm, l = 150 mm
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
12126.00
13500.93
37694.00
45284.01
38034.00
44512.00
45201.00
45204.00
45205.00
45288.01
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
1
1
P3050840 Measurement of: Conductivity, time
Material list
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, RS232
Software Cobra3 CHEM-UNIT
Conductivity / temperature electrode
Magnetic heating stirrer
Electronic temperature control
Support rod, l = 750 mm, M10 thread
Support rod with hole, l = 100
Spring balance holder
Right angle clamp
Universal clamp
Condenser, Dimroth type GL 25/12
Glass tubes, straight, l = 80 mm
+ Chemicals and other laboratory material
Art.No.
12153.00
12151.99
14602.00
14520.61
13701.01
35720.93
35721.00
02023.20
02036.01
03065.20
37697.00
37715.00
35815.15
36701.65
Quantity
1
1
1
1
1
1
1
1
1
1
3
2
1
1
27
Chemistry: Experiments Chemical Equilibrium
Exp.No.
Experiment description
P1311000
Gaschromatography with Cobra3 CHEM-UNIT
P1332100
Chromatographic seperation processes: gas chromatography with Cobra3 BASIC-UNIT
1) P3030911
Dissociation equilibrium with Cobra3 BASIC-UNIT
1) P3030940
Dissociation equilibrium mit der Cobra3 CHEM-UNIT
1) P3031311
Melting diagram of a binary mixture with Cobra3 BASIC-UNIT
1) P3031340
Melting diagram of a binary mixture mit der Cobra3 CHEM-UNIT
1) P3031640
Fractional distillation with the bubble tray column mit der Cobra3 CHEM-UNIT
1) P3031711
Chromatographic separation procedures: gas chromatography with Cobra3 BASIC-UNIT
1) P3031740
Chromatographic separation procedures: gas chromatography mit der Cobra3 CHEM-UNIT
1) detailed scientific description (only in english)
Complete experiment Gas chromatography
P1311000 Measurement of: Temperature, time
The glass jacket gas chromatograph can also be very
easily set up on the panel for complete experiments.
This didactic, transparent gas chromatograph can be
used to carry out separations of highly volatile substances
up to 100 °C. A butane mixture is suitable for this, for
e.g. All the components of the open system such as the
carrier gas supply, flow measurement, separating column
with stationary phase, thermostat device, thermal
conductivity conductor and recorder can be clearly
identified, so that a graphic explanation of the principle
of how it works is possible.
Phywe Advantage:
• easy and quick set-up
• clearly arranged equipment
• can be moved completely
28
Material list
Frame for complete experiments
Panel f. compl. experim. set-ups
Holder for glass jacket
Glass jacket
Gas separation column
Soap bubble flow meter
Mesure probe f.GC, BNC contact
Contr. unit gas chromatograph
Syringe 1ml, Luer, 10 pcs
Cobra3 CHEM-UNIT
Surface probe NiCr-Ni
Stop clock,demo.;diam. 13 cm
Steel cylinder Helium, 2l, filled
Bath for thermostat, Makrolon
Immersion thermostat TC10
Gas bar
Precision Balance, Sartorius LE 623P
Retort stand, h 500 mm
Dish, plastic, 150x150x65 mm
Water jet pump, plastic
+ Chemicals and other laboratory material
Art.No.
45500.00
45510.00
45524.00
02615.00
36670.00
36675.00
36670.10
36670.99
02593.03
12153.00
13615.04
03075.00
41776.00
08487.02
08492.93
40466.00
48852.93
37692.00
33928.00
02728.00
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
Chemistry: Experiments Gas laws
Exp.No.
Experiment description
P1349900
Volume expansion of gases with Cobra3 BASIC-UNIT
P1350000
Gay-Lussas Law with Cobra3 BASIC-UNIT (Software Pressure)
P1350100
Amontons Law with Cobra3 BASIC-UNIT
P1350200
Boyle's and Mariotte's Law with Cobra3 BASIC-UNIT (Software Pressure)
P1364100
Gay-Lussac's law with Cobra3 BASIC-UNIT (Software Gas laws)
P1364200
Charles' (Amontons') law - variant A with Cobra3 BASIC-UNIT
P1364300
Charles' (Amontons') law - variant B with Cobra3 BASIC-UNIT
P1364415
Boyle and Mariotte's law with Cobra3 BASIC-UNIT (Software Gas laws)
1) P3011111
Gay-Lussac's law with Cobra3 BASIC-UNIT
1) P3011140
Gay-Lussac's law mit der Cobra3 CHEM-UNIT
1) P3011211
Charles' (Amontons') law with Cobra3 BASIC-UNIT
1) P3011311
Boyle and Mariotte's law with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Charles´ (Amontons´) law
P1364300 Measurement of: Temperature, pressure, volume
The general gas equation describes the relationship between
pressure, volume and temperature of an enclosed volume of
gas. A distillation insert serves to heat a volume of gas at
constant volume, which is held at a constant temperature with
the aid of a water bath in the glass jacket.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 - gas laws
Measuring module, pressure
Measuring module NiCrNi, 330C
Modulconverter Cobra3
Thermocouple NiCr-Ni,sheathed
Distillation insert for glass jacket
Glass jacket
Heating apparatus
H-base -PASSSupport rod,stainl.steel, 250mm
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14602.00
14516.61
12103.00
12104.00
12150.04
13615.01
02615.06
02615.00
32246.93
02009.55
02031.00
Quantity
1
1
2
1
1
1
1
1
1
1
1
1
2
Boyle´s and Mariotte´s law
P1364415 Measurement of: Pressure, temperature, volume
The general gas equation describes the relationship
between pressure, volume and temperature in an
enclosed volume of gas. A gas syringe which has been
sealed with motor oil is used to measure the connection
between volume and pressure. The gas syringe is
additionally held at a constant temperature with the aid
of a water bath. This water bath prevents temperature
oscillations in cases of compression and expansion and
also enables the recording of isotherms at different
temperatures. Pressure, temperature and volume are
recorded point by point at the stroke of a key.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 - gas laws
Measuring module, pressure
Modulconverter Cobra3
Cobra3, sensor-10..120 °C
Gas syringe, 100 ml
Glass jacket
Heating apparatus
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14602.00
14516.61
12103.00
12150.04
12120.00
02614.00
02615.00
32246.93
Quantity
1
1
2
1
1
1
1
1
1
1
29
Chemistry: Experiments Biochemistry
Exp.No.
Experiment description
P1329600
Determination of the Michaelis´ contant with Cobra3 BASIC-UNIT
P1369630
Determination of the isoelectric point of an amino acid (glycine) with Cobra3 BASIC-UNIT
P1369640
Determination of the isoelectric point of an amino acid (glycine) with Cobra3 CHEM-UNIT
P1369730
The ionic permeability of the cell membrane with Cobra3 BASIC-UNIT
P1369740
The ionic permeability of the cell membrane with Cobra3 CHEM-UNIT
P1369830
Determination of the Michaelis constant with Cobra3 BASIC-UNIT
P1369840
Determination of the Michaelis constant with Cobra3 CHEM-UNIT
P1369930
Substrate inhibition of enzymes with Cobra3 BASIC-UNIT
P1369940
Substrate inhibition of enzymes with Cobra3 CHEM-UNIT
P1370030
Enzyme inhibition (poisoning of enzymes with Cobra3 BASIC-UNIT
P1370040
Enzyme inhibition (poisoning of enzymes with Cobra3 CHEM-UNIT
1) P4120111
Determination of the isoelectric point of an amino acid (glycine) with Cobra3 BASIC-UNIT
1) P4120140
Determination of the isoelectric point of an amino acid (glycine) (Interface
1) P4120211
The ionic permeability of the cell membrane with Cobra3 BASIC-UNIT
1) P4120240
The ionic permeability of the cell membrane mit der Cobra3 CHEM-UNIT
1) P4120311
Determination of the Michaelis constant with Cobra3 BASIC-UNIT
1) P4120340
Determination of the Michaelis constant mit der Cobra3 CHEM-UNIT
1) P4120411
Substrate inhibition of enzymes with Cobra3 BASIC-UNIT
1) P4120440
Substrate inhibition of enzymes mit der Cobra3 CHEM-UNIT
1) P4120511
Enzyme inhibition (poisoning of enzymes) with Cobra3 BASIC-UNIT
1) P4120540
Enzyme inhibition (poisoning of enzymes) mit der Cobra3 CHEM-UNIT
1) P4120611
The enzymatic activity of catalase with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Enzyme inhibition (poisoning of enzymes)
P1370030 Measurement of: Conductivity, time
The enzymatic hydrolysis of urea in aqueous solution liberates
carbon dioxide and ammonia. The ions of these compounds
increase the conductivity of the solution. Conductivity
measurements enable the rate of hydrolysis of urea by the
enzyme urease to be determined. The addition of an appropriate
inhibitor poisons the enzyme, so that it no longer converts
substrate.
Material list
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 CHEM-UNIT
Conductivity/temp. electrode
Magn.stirrer Mini/MST
Magn.stirring bar 30mm, cyl.
Balance SAS 51, 200g/0.01g, RS232
+ Chemicals and other laboratory material
Art.No.
12153.00
12151.99
14602.00
14520.61
13701.01
47334.93
46299.02
45990.93
Quantity
1
1
1
1
1
1
1
1
Determination of the isoelectric point of an amino acid (glycine)
P1369640 Measurement of: pH, temperature, volume
Amino acid molecules carry both acid and amino groups.
They can therefore form both acidic anions and basic
cations. The pH at which these two types of ions are
both present in the same concentration is called the
isoelectric point. This point is to be determined by
recording the titration curve for the amino acid glycine.
Material list
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 CHEM-UNIT
pH-electrode, plastic body, gel, BNC
Immers.probe NiCr-Ni,teflon,300C
Cable Chem-Unit/Motor piston burette
Motor.piston burette,univer.50ml
Magn.stirrer Mini/MST
Volumetric pipette, 50 ml
Pipettor
Balance SAS 51, 200g/0.01g, RS232
+ Chemicals and other laboratory material
30
Art.No.
12153.00
12151.99
14602.00
14520.61
46265.15
13615.05
36501.01
36499.93
47334.93
36581.00
36592.00
45990.93
Quantity
1
1
1
1
1
1
1
1
1
1
1
1
Biology: Experiments Human Physiology
Exp.No.
Experiment description
P1332600
Cardiac and vasular sonic measurement (Phonocardiography) with Cobra3 BASIC-UNIT
P1332700
Electrocardiography with Cobra3 BASIC-UNIT
P1350300
Electromyography with Cobra3 BASIC-UNIT
P1350400
Electro-oculography with Cobra3 BASIC-UNIT
P1350500
Blood pressure measurement with Cobra3 BASIC-UNIT
P1350600
Measurement of the respiratory rate with Cobra3 BASIC-UNIT
P1350700
Changes in the blood flow during smoking with Cobra3 BASIC-UNIT
P1350800
Regulation of body temperature with Cobra3 BASIC-UNIT
P1360500
Muscle stretch reflex and determination of conducting velocity with Cobra3 BASIC-UNIT
P1360600
Acoustic orientation in space with Cobra3 BASIC-UNIT
P1360700
The enzymatic activity of catalase with Cobra3 BASIC-UNIT
1) P4020111
Human electrocardiography (ECG) with Cobra3 BASIC-UNIT
1) P4020211
Phonocardiography: Cardiac and vascular sonic measurement (PCG) with Cobra3 BASIC-UNIT
1) P4020311
Blood pressure measurement with Cobra3 BASIC-UNIT
1) P4020411
Changes in the blood flow during smoking with Cobra3 BASIC-UNIT
1) P4020440
Changes in the blood flow during smoking mit der Cobra3 CHEM-UNIT
1) P4030111
Electromyography (EMG) on the upper arm with Cobra3 BASIC-UNIT
1) P4030211
Muscle stretch reflex & determination of conducting velocity with Cobra3 BASIC-UNIT
1) P4040211
Hearing threshold & frequency differentiating threshold in humans with Cobra3 BASIC-UNIT
1) P4040311
Acoustic orientation in space with Cobra3 BASIC-UNIT
1) P4060311
Regulation of human body temperature with Cobra3 BASIC-UNIT
1) P4060340
Regulation of human body temperature mit der Cobra3 CHEM-UNIT
1) P4070511
Human electrooculography (EOG) with Cobra3 BASIC-UNIT
1) P4090211
Measurement of the human respiratory rate with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Muscle stretch reflex and determination of conducting velocity
P1360500 Measurement of: Voltage
To trigger a stretch reflex in the lower leg musculature
by tapping the Achilles tendon (Achilles tendon reflex).
To record the compound action potential and determine
the reflex latency and the conduction velocity.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Universal recorder
Biological amplifier
EMG electrodes, 3 pieces
Electrode commoning cable
Electrode cream, tube
Reflex hammer, triggering
Connecting cord, 250 mm, red
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
65961.93
65981.02
65981.03
65981.05
65981.10
07360.01
Quantity
1
1
1
1
1
1
1
1
1
1
Elektrocardiography (ECG)
P1332700 Measurement of: Voltage, time
The compound action potential of the excited cardiac muscle fibre is
recorded by ECG electrodes on the body surface between the left leg
and the right and left arm. The signal is filtered, amplified and passed
to an interface for display on a screen and evaluation (lead II according
to Einthoven).
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable,plug/socket, 9 pole
Software Cobra3 Universal recorder
Biological amplifier
ECG electrodes, 3 off
Electrode commoning cable
Potassium chloride
250 g
Connecting cord, 250 mm, red
Connecting cord, 250 mm, blue
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
65961.93
65981.01
65981.03
30098.25
07360.01
07360.04
Quantity
1
1
1
1
1
1
1
1
1
1
31
Biology: Experiments Nervous Systems
Exp.No.
Experiment description
P1360000
Neuro-simulator (membrane time constant and low-pass filtering) with Cobra3 BASIC-UNIT
P1360100
Neuro-simulator (how an exciting synapse functions) with Cobra3 BASIC-UNIT
P1360200
Mechanical stimulation of the rear end of an earthworm with Cobra3 BASIC-UNIT
P1360300
Mechanical stimulation of the front end of an earthworm with Cobra3 BASIC-UNIT
P1360400
Electrical stimulation of an anaesthesized earthworm with Cobra3 BASIC-UNIT
1) P4010111
Derivation of nerve & muscle potentials by mechanical stimulation at rear of an earthworm with Cobra3 BASIC-UNIT
1) P4010211
Derivation of nerve and muscle potentials by mechnical stimulation: front end of earthworm with Cobra3 BASIC-UNIT
1) P4010311
Derivation of nerve potentials after electrical stimulation of an anaesthetized earthworm with Cobra3 BASIC-UNIT
1) P4010511
Neurosimulator: Membrane time constant and low-pass filtering with Cobra3 BASIC-UNIT
1) P4010611
Neurosimulator: How an exiting synapse functions with Cobra3 BASIC-UNIT
1) detailed scientific description (only in english)
Electrical stimulation of an anaesthetized earthworm
P1360400 Measurement of: Voltage, time
To work on the following themes by measuring nerve
and muscle potentials:
1. The action of an anaesthetic
2. The different conduction velocities of median and
lateral giant fibres
3. Refractory period of the median giant fibre
Phywe Advantage:
• The earthworm experiment chamber can be used for many
neurophysiological experiments on an earthworm without
harming it
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Universal recorder
Biological amplifier
Stimuli generator
Earthworm experiment chamber
Connecting cord, 250 mm, red
Connecting cord, 250 mm, blue
Connecting cord, 250 mm, black
Connecting cord, 500 mm, red
Connecting cord, 500 mm, blue
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
65961.93
65962.93
65981.20
07360.01
07360.04
07360.05
07361.01
07361.04
Quantity
1
1
1
1
1
1
1
1
1
2
1
1
Neuronal oscillation
P1087200 Measurement of: Voltage, time
Many animal and human modes of behaviour exhibit
rhythmic characteristics. The periodicity of such
rhythmicity that is created in the central nervous system
can extend over months, days, hours or seconds. The
circuit example shows how non-oscillating individual
neurons can be brought to oscillating behaviour in a
group.
In each case, neural oscillators are necessary as timing
generator for such behaviour.
The rhythmic behaviour of the neuronal network that is
generated is based on the time-delayed negative feedback
across a veto synapse.
=> You can find detailed experiment desciptions in
the Handbook Neurosimulator (01191.02)
Phywe Advantage:
• With the combination of Neurosimulator and Cobra3 you can
simulate many neurophysiological experiments
32
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Universal recorder
Neuro-simulator
Neuro-simulator, power supply
Connecting cord, 500 mm, yellow
+ other laboratory material
Art.No.
12150.00
12151.99
14602.00
14504.61
65963.00
65963.93
07361.02
Quantity
1
1
1
1
3
1
1
Biology: Experiments Plant Physiology
Exp.No.
Experiment description
P1351200
Transpiration of leaves with Cobra3 BASIC-UNIT
P1351300
Photosynthesis (measurement of oxygen pressure) with Cobra3 BASIC-UNIT
P1351400
Glycolysis (measurement of temperature with Cobra3 BASIC-UNIT
P1351500
Calorimetry of foods with Cobra3 BASIC-UNIT
P1360800
Photosynthesis (bubble-counting method) with Cobra3 BASIC-UNIT
P1360900
Glycolysis (measurement of pressure) with Cobra3 BASIC-UNIT
1) P4110111
Photosynthesis (bubble counting method) with Cobra3 BASIC-UNIT
1) P4110211
Photosynthesis (measurement of O2 pressure) with Cobra3 BASIC-UNIT
1) P4110311
Transpiration of leaves with Cobra3 BASIC-UNIT
1) P4110411
Glycolysis (measurement of pressure) with Cobra3 BASIC-UNIT
1) P4110511
Glycolysis (measurement of temperature) with Cobra3 BASIC-UNIT
1) P4110540
Glycolysis (measurement of temperature) mit der Cobra3 CHEM-UNIT
1) detailed scientific description (only in english)
Glykolysis (Measurement of temperature)
P1351400 Measurement of: Temperature, time
Experimental objective is to depict the increase in
temperature, which results, when yeast cells ferment
sugar. To compare the temperature curves of the solutions
with and without yeast.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Temperature
Temperature sensor, -10..120 °C
Precision thermometer, 0...100 °C, grad. 0.2°
Thermos flask
Rubber stopper, d = 41/34 mm, 2 holes
Beaker, low, BORO 3.3, 1000 ml
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14602.00
14503.61
12120.00
47052.00
64841.00
39261.02
46057.00
Quantity
1
1
1
1
2
1
2
2
1
Photosynthesis (measurement of O2 pressure)
P1351300 Measurement of: Pressure, time
The intensity of photosynthesis, and so also of oxygen
production, is dependent on the colour and intensity of
the light. To demonstrate this dependence, the increase
in oxygen pressure is measured during photosynthesis
under white light and green light, and in the dark. With
a waterweed shoot, the pressure increase under green
light is only half as much as under white light. No pressure
increase is measurable in the dark.
Material list
Cobra3 BASIC-UNIT
Power supply 12V/2A
Software Cobra3, Pressure
Data cable, plug/socket, 9 pole
Measuring module, pressure
Support clamp for small case
Support base variable
Support rod, l = 500 mm
Bosshead
Universal clamp
Lab jack, 160 x 130 mm
+ Chemicals and other laboratory material
Art.No.
12150.00
12151.99
14510.61
14602.00
12103.00
02043.10
02001.00
02022.00
02043.00
37715.00
02074.00
Quantity
1
1
1
1
1
1
1
2
1
1
1
33
Biology: Experiments Ecology and Environment
Exp.No.
Experiment description
P1332500
Daily course of luminosity with Cobra3 BASIC-UNIT
P1350900
Comparison of the heat capacities of water and land with Cobra3 BASIC-UNIT
P1351000
The Bergman rule: heat loss in dependence on body surface area and volume with Cobra3 BASIC-UNIT
P1351100
The isolating effect of body coverage with Cobra3 BASIC-UNIT
P1370130
The conductivity of various water samples with Cobra3 BASIC-UNIT
P1370140
The conductivity of various water samples with Cobra3 CHEM-UNIT
P1370230
The pH of various water samples with Cobra3 BASIC-UNIT
P1370240
The pH of various water samples with Cobra3 CHEM-UNIT
P1370330
The origin of acid rain with Cobra3 BASIC-UNIT
P1370340
The origin of acid rain with Cobra3 CHEM-UNIT
P1370430
The twenty-four hour rhythm of an aquatic plant with Cobra3 BASIC-UNIT
P1370440
The twenty-four hour rhythm of an aquatic plant with Cobra3 CHEM-UNIT
1) P4100111
Comparison of the heat capacities of water and land with Cobra3 BASIC-UNIT
1) P4100140
Comparison of the heat capacities of water and land mit der Cobra3 CHEM-UNIT
1) P4100211
The Bergmann rule: Heat loss in dependence on body surface area and volume with Cobra3 BASIC-UNIT
1) P4100240
The Bergmann rule: Heat loss in dependence on body surface area and volume mit der Cobra3 CHEM-UNIT
1) P4100311
The insulating effect of body coverage with Cobra3 BASIC-UNIT
1) P4100340
The insulating effect of body coverage mit der Cobra3 CHEM-UNIT
1) P4100411
The daily course of luminosity with Cobra3 BASIC-UNIT
1) P4100440
The daily course of luminosity mit der Cobra3 CHEM-UNIT
1) P4100511
The conductivity of various water samples with Cobra3 BASIC-UNIT
1) P4100540
The conductivity of various water samples mit der Cobra3 CHEM-UNIT
1) P4100611
The pH of various water samples with Cobra3 BASIC-UNIT
1) P4100640
The pH of various water samples mit der Cobra3 CHEM-UNIT
1) P4100711
The origin of acid rain with Cobra3 BASIC-UNIT
1) P4100740
The origin of acid rain mit der Cobra3 CHEM-UNIT
1) P4100840
The twenty-four hour rhythm of an aquatic plant mit der Cobra3 CHEM-UNIT
1) detailed scientific description (only in english)
The Bergmann rule: Heat loss in dependence on body surface area and volume
P1351000 Measurement of: Temperature, time
Experimental objective is to prepare a graph which
demonstrates the different heat losses with different
volumes and body surface areas. This experiments
confirms the Bergmann rule, which says that animals in
colder regions are larger than their near relatives in
warmer regions. The reason for this is that a larger animal
suffers less heat loss than a smaller animal, as its body
surface is smaller in comparison to its volume than it is
for smaller animals.
Material list
Cobra3 BASIC-UNIT
Software Cobra3 Temperature
Temperature sensor, -10..120°C
Flask, round bottom, 100 ml, IGJ 19/26
Long-neck rd. bot.flask, 500 ml, PN 29
+ other laboratory material
Art.No.
12150.00
14503.61
12120.00
35841.01
36348.00
Quantity
1
1
2
1
1
The isolating effect of body coverage
P1351100 Measurement of: Temperature, time
The experimental objective is to prepare curves showing
the isolating effect of various body coverages
Material list
Art.No.
Cobra3 BASIC-UNIT
12150.00
Power supply 12V/2A
12151.99
Data cable, plug/socket, 9 pole
14602.00
Software Cobra§ Temperature
14503.61
Temperature sensor -10..120 °C
12120.00
Snap-cap vials, d = 28 mm, h = 75 mm, 10 p. 33622.03
Precision thermometer, 0...100 °C, grad. 0.2 ° 47052.00
+ other laboratory material
34
Quantity
1
1
1
1
2
1
1
Biology: Experiments Ecology and Environment
The conductivity of various water samples
P1370140 Measurement of: Conductivity, time
Besides undissolved solids and particles, natural waters
also contain dissolved substances. These are mostly
dissolved salts, i.e. electrolytes. The conductivity of the
course of rivers subject to waste water effluents, for
example, is therefore regularly monitored. High
conductivities can result from in-washes after heavy
downpours or from eluvation because of the geography.
Should this not be the case, they point to contamination
by inorganic salts or, in flowing water, of the transport
of salts from distant regions. In fresh-water lakes, the
different mineral salt concentrations in various horizontal
or vertical zones can be determined by conductivity
measurements. In this experiment, the conductivity of
various water samples are to be determined.
Material list
Art.No.
Cobra3 CHEM-UNIT
12153.00
Power supply 12V/2A
12151.99
Data cable, plug/socket, 9 pole
14602.00
Software Cobra3 CHEM-UNIT
14520.61
Conductivity/temperature electrode
13701.01
Wash bottle, plastic, 500 ml
33931.00
Glass beaker, tall, 50 ml
36001.00
Glass beaker, tall, 150 ml
36003.00
Retort stand, 180 x 100mm, h = 750 mm 37690.00
Right angle clamp
37697.00
Universal clamp
37715.00
Standard solution 1.413 mS/cm (25 °C), 460 ml 47070.02
Water, distilled, 5 l
31246.81
+ other laboratory material
Quantity
1
1
1
1
1
1
1
7
1
2
1
1
1
Phywe Advantage:
• Cobra3 can replace a multimeter. Just change the
measuring module or sensor and measure different
measuring quantities
The origin of acid rain
P1370340 Measurement of: pH-value
Acid rain, which is predominately caused by anthropogenic
air pollution from power stations, households and traffic,
is the cause of damage to forests and the acidification
of soil and bodies of water. The immissions are mostly
gaseous, but are also often in the form of aerosols, i.e.
suspended solid or liquid particles in a very finely
distributed form. They contain gases (e.g. sulphur dioxide,
nitrogen dioxide, carbon dioxide etc.) and the acids
derived from them (e.g. sulphurous acid, nitrous acid,
nitric acid, carbonic acid etc.). In this experiment, acid
rain is to be articially prepared by passing gases such
as SO2, NO2 and CO2 through water, and the drop in pH
resulting from the formation of acid then recorded.
Material list
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 CHEM-UNIT
pH-electrode, plastic body, gel, BNC
Retort stand, 180 x 100 mm, h = 750 mm
Right angle clamp
Graduated pipette, 5 ml
Pasteur pipettes, 1 ml, PE, 500 pcs
+ other laboratory material
Art.No.
12153.00
12151.99
14602.00
14520.61
46265.10
37690.00
37697.00
36599.00
36615.00
Quantity
1
1
1
1
1
1
2
1
1
35
Measuring quantities, Measuring modules and sensors
Necessary Software module:
Software Cobra3 Universal Writer (14515.61) or
Software PowerGraph (14525.61)
Measurement of voltage/current
Voltages can be recorded easily with software assistance in a range of ± 0...30 V (BASIC-UNIT) or ± 0...80 V (CHEM-UNIT). The voltage
can be measured in the ranges defined by the Cobra3 BASIC-/CHEM-UNIT.
The current adapters for the Cobra3 BASIC-UNIT allow current intensity measurements of ± 0...6 A or ± 0...30 A. The measuring ranges
of the current adapters are fixed. In addition, current intensities can be measured as a voltage drop using a parallel resistor.
Cobra3 Current sensor, 6 A, galvanic separated 12126.00
This sensor serves for galvanic separated measurements of direct and alternating currents of up to 6 A. The sensor
is supplied complete with a 350 mm data cable which enables it to be connected to the appropriate SUB-D socket,
either input S1 or input S2, of the Cobra3 BASIC-UNIT. The measurement current is fed in via the 4 mm pair of
safety sockets of the sensor.
Technical data:
Measuring range:
Continuous current:
Accuracy:
Resolution:
Limiting frequency:
Continuity resistance:
Dimensions of sensor:
Weight:
6 A (sensor port S1), 6 A, 0.6 A, Autorange (sensor port S2)
max. 6 A
1.5%
0.1% (of end value of measuring range)
20 kHz
< 0.02 Ohm
97 x 42 x 25 (mm)
approx. 0.12 kg
Cobra3 Current sensor, 30 A, galvanic separated 12127.00
This sensor serves for galvanic separated measurements of direct and alternating currents of up to 30 A. The sensor is
supplied complete with a 350 mm data cable which enables it to be connected to the appropriate SUB-D socket, either
input S1 or input S2, of the Cobra3 BASIC-UNIT. The measurement current is fed in via the 4 mm pair of safety sockets
of the sensor.
Technical data:
Measuring range:
30 A (sensor port S1), 30 A, 3 A, Autorange (sensor port S2)
Continuous current:
max. 25 A
Max current:
30 A for < 5 minute!
Accuracy:
1.5%
Resolution:
0.1% (of end value of measuring range)
Limiting frequency:
20 kHz
Continuity resistance:
< 0.01 Ohm
Dimensions of sensor:
97 x 42 x 25 (mm)
Weight:
approx. 0.12 kg
Necessary Software module:
Software Cobra3 Translation/Rotation (14512.61)
Measurement of motion
The following kinds of motion can be measured with Cobra3: Linear motion – velocity –
acceleration – oscillation of a pendulum – rotary motion – angles – angular velocity –
angular acceleration. Motions can be recorded with the Movement sensor or with the Light
barrier with Incremental wheel.
Movement sensor
12004.10
Low-friction incremental decor with a high resolution (512 steps/turn) to detect rotary movements and linear
movements. Diameter of the string grooves 6 mm and 12 mm.
Necessary adapter for connecting the BNC-cable with 4-mm plug:
- Adapter BNC-socket / 4 mm plug pair 07542.27
- Adapter BNC-socket / 4 mm plug 07542.20
Recommended equipment for pendulum experiments:
- Pendulum 12004.11
Light barrier, compact with Incremental wheel
11207.20
Universal fork-type light barrier to measure short and long shadowing periods. The Incremental wheel with a string
groove which can be attached to the fork of the light barrier allows to measure paths by counting the ribs of the
Incremental wheel. Areas of application: track experiments, free fall, pendulum experiments, leaf spring oscillations,
drop counters, volumetric measurements concerning the gas laws.
36
Measuring quantities, Measuring modules and sensors
Necessary Software module:
Software Cobra3 Timer/Counter (14511.61)
Free Fall
The free fall experiment with a beam stopper and the compact light barrier is used to measure the uniformly accelerated motion in
the earth's gravitational field. Other falling experiments can be performed with the help of the falling-sphere apparatus.
Beam stopper
02504.00
Black anodised aluminium with a rectangular space. Bore holes to attach additional masses in order to show that
the acceleration of gravity does not depend on the mass of the falling body.
Technical data:
Length: 21 cm
Width:
5 cm.
Falling sphere apparatur
02502.88
Measurement instrument to determine falling time of falling bodies.
- Determination of the acceleration of gravity of a falling sphere with a high level of accuracy.
- The purely mechanical fixation of the sphere allows to avoid errors which might occur with electromagnetic fixing
systems due to the residual magnetism inherent in these systems.
The apparatus includes the following individual components:
Release unit 02502.00
Impact switch 02503.00
Remark: The release unit and the impact switch are attached to a “PASS” stand support system using clamps.
The fall path can thus be adjusted as desired. Suitable time measuring devices: Digital Counter 4 decades
(13600.93), Digital Counter 6 decades (13603.93), Timer 4-4 (13605.99) or Cobra3 BASIC-UNIT (12150.00)
Measurement of Forces
Necessary Software module:
Software Cobra3 Force/Tesla (14515.61)
Newton measuring module
12110.00
Plug-in module for measuring forces in conjunction with the Newton sensor (no. 12110.01). Especially suitable
for experiments dealing with extremely small forces, e.g. surface tension experiments, Coulomb law, current
balance etc.
Measuring range: ± 4 mN, ± 40 mN, ± 400 mN, ± 4 N
Resolution:
0.0035 mN, 0.035 mN, 0.35 mN, 3.5 mN
Compensation:
± 4 N in every measuring range
Newton Sensor ± 4 N
12110.01
To be connected to the Newton module. Placed in a sturdy metal housing with a rod to be attached to support
stands. Fitted with a hook to measure tensile forces and a detachable plate to induce compressive forces.
- Overload protection through limit stops for tensile and compressive stress
- Nearly "non-displacement" force measurement (stroke approx. 0.4 mm/N)
- Measurement with the highest resolution level of 0.0035 mN and a pre-load of up to 4 N possible (compensation).
Cobra3 Newton sensor ± 50 N
12125.00
Force sensor with 4 strain gauges in full bridge circuit, with tare function, load hooks and fixing screw for assembly
to stands. With 1.9 m fixed cable between sensor and probe. Including 350 mm data cable 2xSub-D, 9-pin type
for Cobra3 sensors.
Technical data:
Measuring range:
± 50/15/5/1/0,5 N, Autorange
Resolution:
0.1% of upper limit of effective range
Max. loading:
120 N
Limiting frequency: 500 Hz
Tare:
possible in every measuring range, max. 50 N
Dimensions [mm]:
70 x 50 x 15
Weight (only sensor): 0,08 kg
37
Measuring quantities, Measuring modules and sensors
Measurement of electric charge
Necessary Software module:
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (145245461)
Electrometer amplifier
13621.00
Versatile measuring amplifier for the determination of very small direct currents, for measurement of
electric charges and for a quasi-static measurement of direct voltages. The electrometer amplifier can
be adapted directly to the Cobra3 BASIC-UNIT or used separately as a low cost measuring
amplifier. Addtionally power supply 11074.93 is required.
Technical data
Amplification:
1
Output voltage:
± 10 V with a 12 V~ supply voltage
Input resistance:
>1013
Output current:
5 mA, short-circuit-proof
Input current:
< 0.5 pA
Output resistance: < 1
Inherent input capacitance: < 50 pF
Dimensions:
approx. 65 x 113 x 35 mm
Input voltage:
± 10 V
Weight:
approx. 150 g
Measurement of acoustic,
cardiac and vascular sound
Necessary Software module:
Software Cobra3 Timer/Counter (14511.61) or
Software Cobra3 Frequency Analysis (14514.61) or
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (14525.61)
In the area of acoustics the following items can be treated with Cobra3: Acoustic, frequency and level measurement, Fourier analysis,
speed of sound, physiological experiments like cardiac and vascular sonic measurements
Measuring microphone
03542.00
With an integrated amplifier and three selectable output modes: level, signal, TTL-level
- Frequency range: 30 Hz...20 kHz, (15...30 Hz and 20...40 kHz) with a reduced reception
- Continuously adjustable amplification
- Amplifier with minimum current requirements
- Powered by a battery or an external power supply unit
- Automatic shut-down after about one hour of class if powered by a battery. Reactivation by means of
a push-button
- 25 cm sensor tube (d = 8 mm) ensuring an interference-free measurement of sound fields
- Flexible shielded cable ( l = 2 m), BNC plug
- Comes supplied with a threaded rod for secure fastening
Also necessary:
Flat cell battery, 9 V:
07496.10 or
Power supply unit 7.5/9/12 V, 300 mA, 2 mm plug: 11078.93
Adapter BNC socket/4 mm plug pair:
07542.27
Measuring microphone with amplifier
03543.00
- Microphone capsule with connecting cable ( l= 1.5 m) toward the amplifier
- Frequency range: 50 Hz...20 kHz
- Continuously adjustable amplification
- Amplifier with minimum current requirements.
- Powered by a 9 V battery
Also necessary:
Flat cell battery, 9 V 07496.10
Acoustic probe
03544.00
Highly sensitive miniature microphone for measuring cardiac and vascular sound and for determining
the heartbeat rate. Electret microphone with FET amplifier. Including a 1.5 m cable with 9-pin Sub-D
plug. Frequency range: 50 Hz...20 kHz
38
Measuring quantities, Measuring modules and sensors
Necessary Software module:
Software Cobra3 Temperature(14503.61) or
Software Cobra3 Gas Laws (14516.61) or
Software Cobra3 Pressure (14510.61) or
Software Cobra3 pH/Potential (14509.61) or
Software Cobra3 Conductivity (14508.61) or
Software Cobra3 CHEM-UNIT (14520.61)
Measurement of temperature/
thermodynamics
Temperature measuring module Pt 100
12102.00
Plug-in module for a high-resolution measurement of temperatures using Pt 100 sensors.
Technical data:
- Measuring range: - 60…+ 350 °C
- Resolution: 0.01° C
- Two sensors can be connected simultaneously (multiplexing). Measurement of the temperature difference with
a resolution of 0.01°C.
Temperature probes Pt 100
Measuring resistance Pt 100 in a stainless steel or Teflon protective tube, connecting cable with four insulated
copper leads for measuring resistances by the four conductor method, 5 pin diode plug.
Temperature range:
Response time (in water):
Protective tube:
Length of protective tube:
Diameter of protective tube:
Length of lead:
Art.No.
11759.01
11759.02
11759.04
11759.01
–20…300 °C
approx. 10 s
Stainless steel
200 mm
5.2 mm / 3.2 mm at measuring tip
150 cm
11759.02
- 20…+ 300 °C
approx. 10 s
Stainless steel
100 mm
3.5 mm
120 cm
11759.04
-200…300°C
approx. 20 s
Teflon
250 mm
7 mm/5 mm
150 cm
Description
Temperature probe, immersion type, Pt 100
Surface temperature probe PT100
Temperature probe, immersion type, Teflon, PT100,
Temperature measuring module NiCr-Ni
12104.00
Plug-in module for measuring temperatures by means of NiCr-Ni thermocouples in the range of -50... +330°C.
Can be combined with the pressure measuring module, e.g. to record vapour-pressure diagrams or to compensate
the influence of the temperature on the electric conductivity or the pH value in solutions together with the
corresponding modules and sensors.
Technical data:
Measuring range: - 50...+ 333 °C
Resolution:
0.2°C
Thermocouples NiCr-Ni, Standard plug Type K
Different types of NiCr-Ni thermocouples with 2 pin standard flat plug Type K, free of thermal tension. Suitable
for e.g. Digital Thermometer 07050.00, 07050.01, Hand-held measuring device Temperature 07140.00, Cobra3
CHEM-UNIT 12153.00 and Cobra3 BASIC-UNIT 12150.00.
Temperature range:
Response time:
Dimensions of the probe
Diameter:
Length:
Length of lead:
13615.02
13615.01
13615.03
13615.04
13615.05
– 50…+ 500 °C – 50…+1100 °C – 50…+ 1000 °C – 50…+ 1000 °C – 50…+ 300 °C
approx. 2 s
<1s
approx. 5 s
approx. 3 s
approx. 10 s
1…2 mm
150 cm
0.5 mm
100 mm
200 cm
Art.No. Descption
13615.02 Thermocouple NiCr-Ni,500 °C max.
13615.01 Thermocouple NiCr-Ni,sheathed, - 50…+ 1100 °C
steel, flexible, bending radius app. 1 mm
13615.03 Immersion probe NiCr-Ni, - 50…+ 1000 °C
13615.05 Immersion probe, NiCr-Ni, teflon, 300 °C
13615.04 Surface probe NiCr-Ni, - 50…+ 1000 °C
3 mm
120 mm
100 cm
4 mm (plate )
120 mm
100 cm
7 mm
250 mm
150 cm
Remarks:
glass silk isolation, point welded measuring tip
Magnesium-oxide isolation, sheath of stainless
for liquids and gases, in a protective tube, stainless
steel
for liquids and gases, in a protective tube, teflon
for measuring surface temperature, Thermocouple
on small copper plate to a protective tube
Temperature sensor, semiconductor type
12120.00
To be connected directly to the sensor ports S1 and S2 of the Cobra3 BASIC-UNIT. No measuring module required.
Technical data:
Sensor sheathing:
stainless steel
Resolution:
0.5 °C at S1 / 0.2 °C at S2
Diameter:
6 mm
Total length incl. Cable: 1.5 m
Sensor length:
200 mm
Connector:
9-pin-Sub-D
Measuring range:
- 20 °C...+ 110 °C
39
Measuring quantities, Measuring modules and sensors
Temperature probe, immersion type, Pt1000 (for CHEM-UNIT) 12123.00
Temperature probes Pt1000, with 4 mm plugs (for CHEM-UNIT)
For temperature measurement and automatic temperature compensation of pH- and conductivity measurements.
13702.01 Temperature probe Pt1000, 4-mm plugs, 1 m cable
07139.01 Temperature probe Pt1000, 4-mm plugs, 10 m cable
Necessary Software module:
Software Cobra3 Pressure (14510.61)
Software Cobra3 Weather Station (14518.61)
Measurement of pressure
Pressure measuring module
Plug-in module for measuring pressures or pressure differences. With hose connector and hose section for
connecting the module to any type of peripheral equipment (the vacuum rubber tubing Art.No. 39288.00 is
recommended for extension purposes). The measuring module replaces mercury manometers or crusher gauges
normally used for studying the gas laws, for recording vapourpressure diagrams or for measuring the barometric pressure.
Technical data:
Pressure sensor:
integrated in the measuring module
Measuring range:
0...2 bar
Resolution:
0.5 mbar
Overload capacity: up to 4 bar
Response time:
< 1 ms
Suitable media:
non-aggressive gases and liquids
Pressure sensors, absolut or differential
Absolute and differential pressure sensors for overpressure and vacuum systems. With hose connector and hose
section for connecting the module to any type of peripheral equipment (the vacuum rubber tubing Art.No. 39288.00
is recommended for extension purposes). Including data cable for Cobra3 sensors.
Technical data:
12128.00
12129.00
12130.00
Measuring range:
2.0 bar
2.0 bar
80 mbar
Autorange:
0.6 und 2.0 bar
0.6 und 2.0 bar
80/8/2.4 mbar
Max. pressure:
10 bar
10 bar
750 mbar
Min. pressure
0.2 bar
Accuracy:
1.5 %
1.5 %
5%
Resolution:
0.05 %
0.05 %
0.05 %
Dimensions [mm]: 75 x 42 x 25
75 x 42 x 25
75 x 42 x 25
12128.00
12129.00
12130.00
Measurement of illuminance/
light intensity
Cobra3 Pressure sensor, 2.0 bar absolut
Cobra3 Pressure sensor, 2.0 bar, differential
Cobra3 Pressure sensor, 80 mbar, differential
Necessary Software module:
Software Cobra3 Lux (14507.61) or Software Cobra3 Universal Writer (14504.61)
Lux measuring module
12107.00
Plug-in module for measuring the illuminance. Measuring range selectable with the aid of the software.
Measuring Range
Resolution
300 Lx
0.15 Lx
3 kLx
1.5 Lx
30 kLx
15 Lx
300 kLx
150 Lx
Luxmeter probe, l = 2 m
12107.01
Rod-type probe to be connected to the Lux measuring module Art.No. 12107.00, the hand-held measuring device
luxmeter Art.No. 07137.00 or the Lux range multiplier Art.No. 11111.11.
Photodiode, housing G1
39119.01
Si-PIN photodiode with screen against stray light. Type BPW 24
Technical data:
Operation as a photodiode:
Operation as a photovoltaic cell:
- Reverse voltage: < 50 V
- Open-circuit voltage: app. 380 mV at 1 klx
- Power:
< 180 mW
- Short-circuit current: app. 35 µA at 1 klx
- Sensitivity:
45 nA / lx
- Sensitivity:
45 nA / lx
40
Measuring quantities, Measuring modules and sensors
Measurement of magnetic field
Necessary Software module:
Software Cobra3 Force/Tesla (14515.61)
Tesla measuring module
12109.00
Plug-in module for a precise measurement of magnetic DC and AC fields.
- Measurements possible from 5 T to 1 T
- Detection of the field direction (sign) in the case of DC fields
- Software-controlled zero adjustment and compensation of interference fields up to ± 1 T
- Readily calibrated, i.e. no calibration magnet necessary
- Use of the Hall probes of the teslameter Art.No. 13610.93
Technical data:
Measuring ranges: ± 10 mT, ± 100 mT, ± 1 T
Max. resolution:
5 T (12 bit)
Compensation:
± 1 T in all measuring ranges
Hall probes, axial or tangential
These Hall probes can be combined with the digital Teslameter (13610.93) or the measuring module Cobra3
(12109.00) with Cobra3 BASIC-UNIT (12150.00). Due to the flat electrode particularly suitable for measuring in
narrow air gaps and in long coils. With fitted connecting cable and diode plug.
Art.No.
13610.01
13610.02
Description
Hall probe, axial, l = 300 mm, tube diameter = 6 mm
Hall probe, tangential, dimensions = 75 x 5 x 1 mm
Necessary Software module:
Software Cobra3 Hall effect (14521.61)
Hall Effect
Hall effect module
11801.00
The Hall effect module is a time-saving system due to an easy, quick and safe experiment set-up. The Hall module
offers the following advantages:
- central power supply to provide an adjustable constant current for the sample and for the integrated sample
heater
- digital display to show either the sample current or the sample temperature
- sample heater with fully automatic temperature control system to avoid damage to the samples
- electronic compensating circuit for Hall voltage offset compensation
- RS232 interface to connect an interface for comfortable data capturing, display and evaluation using a PC
- Three carrier boards with temperature sensors, each equipped with a p- and n-doped germanium crystal and a
non-doped Ge-crystal.
Technical data:
Dimensions:
160 x 105 x 25 mm
Max.sample temperature: 175 °C (automatic temperature control)
Max. sample current:
± 60 mA
Mains voltage:
12 V-; 3.5 A
Measurement of radioactivity/
nuclear physics
Necessary Software module:
Software Cobra3 Radioactivity (14506.61)
Geiger-Müller counter tube module
12106.00
Plug-in module for measuring radioactive radiation with the aid of a Geiger-Muller counter tube. The module also
supplies the counter tube with the necessary supply voltage.
Technical data:
Counter tube voltage: 500 V ± 5%
Max. pulse frequency: 4 x105 pulses per minute
41
Measuring quantities, Measuring modules and sensors
Counter tube Type A and Type B
Self deleting halogen pulse ionisation chamber counter tube with very thin mica window to investigate, -, and -radiation. In iron-chromium cylindrical casing, with BNC output socket (over interior 10 M resistor).
Protective cap for mica window. Counter tube B with a 50 cm long coaxial cable.
Technical data:
Diameter of casing:
22 mm
Length of plateau: 200 V
Detactable type of radiation:
Plateau rising:
0.04%/V
Deleting substance:
halogen
Dead time:
ca. 100 µs
Covering density of the active surface: Mica Type A: 1.5...2.0 mg/cm2 Zero effect:
15 Impulse/minute
Mica Type B: 2.0...3.0 mg/cm2 Operating life:
>1010 Impulse
Working voltage:
500 V
09005.00 Counter tube Type B, with fixed 50 cm long BNC cable
09025.11 Counter tube Type A
Measurement of pH/Potential
Necessary Software module:
Software Cobra3 pH/Potential (14504.61) or
Software Cobra3 CHEM-UNIT (14520.61)
pH/Potential measuring module
12101.00
Plug-in module for measuring pH values and potentials.
Input jack:
coaxial, DIN 19262
Input impedance:
1012
pH measurement:
Measuring range:
0…14 pH, (0.01 pH)
Probe calibration:
Software-controlled
Temperature compensation: Software-controlled and manual or automatic with the aid of the
temperature module NiCr-Ni (Art.No.12104.00)
Potential measurement:
Measuring range 0…±2 V (± 1 mV)
pH electrodes with DIN connector
18450.00 pH Electrode, plastic, gel-filled, epoxy resin immersion shaft, with electrolyte-gel filling. Not
refillable. With 1 m cable and DIN plug, immersion depth 120 mm, pH range 0...14, temperature range
0 to 60°C, membrane shape spherical
18452.00 pH Electrode, glass, refillable, with 1 m cable and DIN plug, immersion depth 165 mm, pH
range 0...12, membrane resistance 400 W , temperature range 0 to 100 °C, membrane shape
cylindrical, membrane volume 5 ml upwards
Silver chloride reference electrode
18475.00
Immersion length 150 mm, temperature range 0...80 °C, measuring volume 20 ml upwards, 4 mm plug, refillable
Platinum electrode in protective tube, d = 8 mm 45206.00
Electrode with fixed connection socket (4 mm plug). This electrode can be inserted or held in rubber stopperholes
with 7 mm diameter as well as in screwed connection caps. In combination with Silver chloride reference electrode
(18475.00) suitable for measuring of electrochemical potentials.
Motor piston burette, universal, 50 ml
36499.93
For uniform proportioning and reproducible titration. Microprocessor-controlled, with remote control. This spacesaving piston burette can be used for all kinds of titration, proportioning and incremental proportioning. The piston
burette is particularly easy to use due to the menu-assisted user interface and the display. The precise proportioning
system with the precision glass cylinder made of DURAN® and the zero-backlash motor-spindle-drive ensure exact
results when it comes to proportioning and titration. All parts getting into contact with the titration and proportioning
solutions are made of chemical-resistant materials.
Technical data:
Burette volume:
50 ml
Glass cylinder:
DURAN® with a transparent, brown protective jacket
Display:
LCD matrix (64 x128 pixels) with background lighting; adjustable contrast
Volume indication:
5 places before and 2 places after the decimal point
Display accuracy:
0.01 ml
Proportioning accuracy: ±0.15%, related to the total volume according to DIN 12650, Part 5
Power consumption:
18 VA
Supply voltage:
230 V~
Dimensions:
Width: 135 mm
Depth: 310 mm
Height: 205 mm
Remark:
For connecting the motor piston burette to the Cobra3-Interface you need additionally:
- Cable, BASIC-UNIT / Motor piston burette (36501.03); for connecting to the Cobra3 BASIC-UNIT
- Cable, CHEM-UNIT / Motor piston burette (36501.01); for connecting to the Cobra3 CHEM-UNIT
42
Measuring quantities, Measuring modules and sensors
Cable, Cobra3 / Motor piston burette
For connecting the motor piston burette (36499.93) to the Cobra3-Interface.
36501.03
36501.01
Cable, Cobra3 BASIC-UNIT to motor piston burette
Cable, Cobra3 CHEM-UNIT to motor piston burette
Redox electrode, BNC (for Cobra3 CHEM-UNIT)
46267.10
For measuring of electrochemical potentials, with nonbreakable plastic shaft (d = 8 mm).
pH electrodes with BNC plug (for Cobra3 CHEM-UNIT)
46265.15
46266.10
46268.10
pH electrode, plastic, gel-filled, 0…+ 80 °C, 1.5 bar, gel-filled with double reference lead, with
BNC plug, 1 m cable, 120 x 12 mm
pH electrode, plastic, 0…+ 80 °C, 0.5 bar, refillable with double reference lead, with BNC plug,
1 m cable, 120 x 12 mm
pH electrode, glass, -5…+ 100 °C, 0.5 bar, refillable, with BNC plug, 1 m cable, 120 x 12 mm.
Special electrodes with 4-mm plugs (for Cobra3 CHEM-UNIT)
For connecting pH electrodes 18475.00 and 18477.00 to measuring instruments with BNC sockets adapter
07542.26 is required.
18475.00 Silver chloride reference electrode Immersion length 150 mm, temperature range 0...+ 80 °C,
measuring volume 20 ml upwards, 4 mm plug
45206.00 Platinum electrode in protective tube, d = 8 mm
18477.00 Antimony electrode together with a reference electrode, e.g. silver chloride 18475.00,
for pH measurements in the range 2.0 to 9.5, 4 mm plug
Measurement of conductivity
Necessary Software module:
Software Cobra3 Conductivity (14508.61) or
Software Cobra3 CHEM-UNIT (14520.61
Conductivity measuring module
12108.00
Plug-in module for measuring conductivity.
Technical data:
Measuring ranges:
0... 0,2 mS/cm
0... 2 mS/cm
0... 20 mS/cm
0... 200 mS/cm
Measuring range selection: Software-controlled
Measuring frequency:
app. 4 kHz
Temperature compensation: Software-controlled and manual or automatically with Measuring module
temperature NiCr-Ni (12104.00)
Cell constant:
0,85...1,15 cm-1
Conductivity probe
18151.02
Glass shaft l = 12 cm, platinum-plated platinum sheet electrodes, minimum immersion depth 15 mm, cell constant
1.0 cm-1 ±10%, including a 1.5 m cable.
Conductivity-temperature probe (for Cobra3 CHEM-UNIT) 13701.01
Conductivity probe with integrated Pt1000 temperature probe, cell constant k = 1,0/cm-1, minimum immersion
depth 10 mm, 5 pin diode plug.
Measurement of oxygen
content in water
Necessary Software module:
Software Cobra3 Oxygen (14505.61)
Oxygen measuring module
12105.00
Plug-in module for oxygen measurements. Simultaneous measurement of the oxygen concentration and the
temperature using the oxygen/temperature probe Art.No. 12105.01. If there is also a pressure measuring module
or a conductivity measuring module these can be connected to a free sensor port for correcting the atmospheric
pressure or the salt content.
Technical data:
Measuring ranges
Atmospheric pressure correction: manual or automatic
0…30 mg/l
O2-concentration:
using the pressure module 12103.00
0…200 %
O2-saturation:
Salt content correction: manual or automatic using the
Temperature:
0…+ 50 °C
conductivity module 12108.00
Accuracy O2 :
2% of the measured value Electrode calibration: in air-saturated water or in the air
Temperature compensation: automatic (0…+ 50 °C)
43
Measuring quantities, Measuring modules and sensors
Oxygen/temperatur electrode
12105.01
With an integrated Pt1000 temperature sensor. Comes supplied together with a service box including an electrolyte
and a diaphragm cap (spare part).
Measurement of
meteorological data
Necessary Software module:
Software Cobra3 Weather station(14518.61)
With the help of the Software Cobra3 Weather station you can record 4 important meteorological data at the same time. That is in
detail: 1. Temperature 2. Air pressure 3. Relative humidity 4. Wind velocity
Pressure measuring module
12103.00
Plug-in module for measuring pressures or pressure differences. With hose connector and hose section for
connecting the module to any type of peripheral equipment (the vacuum rubber tubing no. 39288.00 is recommended
for extension purposes). The measuring module replaces mercury manometers or crusher gauges normally used
for studying the gas laws, for recording vapourpressure diagrams or for measuring the barometric pressure.
Technical data:
Pressure sensor: integrated in the measuring module
Measuring range: 0...2 bar
Resolution:
0.5 mbar
Overload capacity: up to 4 bar
Response time:
< 1 ms
Suitable media:
non-aggressive gases and liquids
Cobra3 Humidity sensor
12121.00
Humidity sensor for measuring the relative and absolute humidity and also the temperature with Cobra3 BASICUNIT.
Technical data:
Measuring range:
5...95% rel. humidity ± 5%
Response time:
15 s in moving air
Temperature measureing range: 40... 85 °C
Cobra3 Wind sensor
12124.00
Wind sensor with large speed measurement range of 4 to 140 km/h for fitting to masts or support rods or poles.
Can be screwed onto the tripod rod/pole (M6) or attached to any mast or jib using the fixing angle supplied.
Technical data:
Operating temperature: 0…+ 70 °C
Measuring range:
1 … 40 m/s resp. 4 … 140 km/h
Max. switching capacity: 0.6 VA
Weight:
approx. 0.3 kg
Dimensions [mm]:
112 x 162 x 140
Quantitative measurements
with the Stirling engine
Necessary Software module:
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (14525.
Stirling engine, transparent
04372.00
Stirling motor mounted on a base plate. Large transparent flywheel. Both cylinder and displacement piston made
of heat-proof glass. Connecting rod and crank of wear resistant plastic. Hardened, ball bearing mounted steel
connecting rod. Displacement piston with 2 measuring connecting pieces for temperature measurements.
To demonstrate the functionality of:
– a hot air engine
– a heat pump/cold machine
– a solar motor
To determine:
– mechanical and electric power as a function of rotating speed
– of operating temperatures and temperature differences
For the recording and evaluation of:
– pV diagrams (thermodynamic cycle processes)
Technical data:
Base plate:
207 x 290 mm
Flywheel diameter:
140 mm
Hole in temperature measuring connection piece (for thermocouple NiCr-Ni, sheathed): 0.6 mm
Motor power:
approx. 1 W
rotating speed without load: min. 800/min
Volume:
32 cm3…44 cm3
Standard accessories: spirit burner, Allen wrench to mount flywheel.
44
Measuring quantities, Measuring modules and sensors
Meter for Stirling engine, pVnT
04371.97
To display temperature and number of revolutions per minute, and for the output of analogue voltages for Stirling
motor pressure and volume.
Technical data:
Revolutions per:
Minute:
4 digit display
Pressure:
analogue voltage value
Range:
0…1999 min–1
Range:
0…5 V
approx. Po ±1000 hPa
Temperature: 4 digit display
Volume:
analogue voltage value
T1: measuring range:
–10…+ 500 °C
Range:
0…5 V
Resolution:
1 °C
Vmin…Vmax
T2: measuring range:
–10…+190°C
Resolution:
0.2°C
Mains voltage: 230 V/50…60 Hz
(display T1 can be switched over to difference measurement)
Sensor unit pVn
04371.00
To measure pressure inside the Stirling motor with a sensitive, temperature compensated pressure sensor and
to scan the crankshaft with an incremental transmitter.
Technical data:
Pressure sensor (for operating voltage 5 V):
Sensitivity:
typically
44x10-6 V/hPa
Linearity:
0.15 %
Incremental transmitter:
Voltage at Po: typically 0 mV
Resolution: 256 impulses/revolution
Measurement of RLC circuits
Necessary Software module:
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (14525.61)
Function generator measuring module (FG-Module)
12111.00
Plug-in measurement module for generating sinusoidal, square-wave and triangular-wave signals, direct voltages
and frequency- or voltage-ramps. The module can be used as a voltage or current source:
- If it is used as a voltage source, the actual frequency and current can be displayed and measured during operation
- If it is used as a current source, the actual frequency and voltage can be displayed and measured
- In addition, up to 2 measurement quantities can be recorded and evaluated with the help of the Cobra3 BASIC-UNIT
Technical data:
Frequency ranges
Range 1:
200 Hz–20 kHz
Range 2: 2 Hz–200 Hz
Interval:
10 Hz
Interval: 1 Hz
Signal form: Sinusoidal, square-wave, triangular-wave signals, direct voltages and frequency- or voltageramps
Voltage source
Current source
Amplitude:
±0 V...10 V
Amplitude:
0 mA...100 mA
Interval:
5 mV
Interval:
5 mA
Offset voltage: –10 V...10 V (adjustable)
Offset current: –100 mA...±100 mA
Industry sensor adapter
Necessary Software module:
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (14525.61)
Industry sensor adapter
12132.00
The sensor is used to adapt commercially available industrial sensors with 2-, 3- and 4-conductor technology to
the Cobra3 interface system. All sensor signals are converted into the Cobra3-typical 0…10 V signal.
Technical data:
Supply voltage output:
24 V DC/50 mA max.
Signal input:
2-conductor type 4-20 mA: Ri = 500
3-conductor type 0-20 mA: Ri = 500
4-conductor type 0-10 mA: Ri = 130 k
Signal output (Cobra3):
0...10 V or 2...10 V DC
Resolution:
5 mV (corresponds to 10 mA sensor signal)
45
Measuring quantities, Measuring modules and sensors
Necessary Software module:
Software Cobra3 Universal Writer (14504.61) or
Software Cobra3 PowerGraph (14525.61)
Neurophysiological Experiments
A large number of neurophysiological experiments with living objects can be realised with Cobra3. The Neurosimulator unit offers
additionally a lot of possibilities to simulate neurophysiological experiments without living objects.
Biological amplifier
65961.93
With the aid of this biological amplifier a wide range of electrophysiological experiments can be carried out on
human beings, insects and earthworms. The frequency range for the measurement can be preselected to match
the different biological current sources as in ECG (electrocardiogram), EMG (electromyogram, muscle action
potential), EEG (electroencephalogram, recording of the electrical activity of the brain), EOG (electro-oculogram,
recording of eye movements, e.g. when reading), ENG (electronystagmogram). Furthermore electrophysiological
nerve and muscle potentials of an earthworm can be measured.
Technical data:
Input resistance:
10 M
Input voltage :
10 µV...100 mV
Amplification stages:
x100 and x1000
Frequency ranges of types of measurement: ECG:
0.5...75.0 Hz
EEG, ENG, EOG:
1...25 Hz
EMG, earthworm: 80 Hz...5 kHz
Trigger input:
R < 220
Trigger output:
5 V (TTL)
Neurosimulator, neuron unit
65963.00
The neuron unit Neurosimulator simulates a generalised nerve cell with an apical dendrite and its synaptic contacts,
a cell body (soma) and a nerve fibre (axon) with myelin sheathes and a Ranvier's ring. The dendrite comprises
exciting, inhibiting, presynaptic and Hebb's synapses which are marked by the corresponding colours of the
sockets. Here the axons end in presynaptic buttons. These are represented together with a part of the (afferent)
fibre providing the signal. The connection between the (efferent) axon of a neuron unit which leads away or the
stimulus output socket of the operating unit and a synapse is established by means of a white cable which is
inserted into the desired synapse socket. The yellow sockets serve for the derivation of the state of excitement
of the simulated neuron. They must be connected to suitable measuring instruments (e.g. Cobra3 BASIC-UNIT).
The intracellular potential (simulation of an intracellular electrode) can be collected at the socket "l" and the signal
of the axon (action potentials = AP) at "E". These last ones represent the signals which are passed on by the cell.
The height of the intracellular potential l can be deduced from the luminous intensity of the light emitting diode
at the point of the electrode. Furthermore, the action potentials can be made audible with the aid of the integrated
acoustic monitor. This allows - similar to what is happening in a neurophysiological laboratory - a direct evaluation
of the cell activity. The turning knob "S" serves for setting the "firing threshold" of the neuron. This threshold
controls that part of the intracellular potential which is passed on by means of action potentials (the effect of
alcohol or drugs
Neurosimulator operating unit
65963.93
The operating unit comprises the power supply of up to 4 neuron units, three touch simulators with a variable stimulating intensity
and an optic sensor. The three touch simulators comprise a key button and a turning knob which serves for adjusting the intensity
of stimulation (or the height of the provided signal). The signal is supplied as long as the stimulation key remains pressed. The
lightsensitive photo sensor allows the simulation of a simple eye showing lightdark signal.
Voltage output:
+ 9 V (for 4 Neurosimulator units maximum)
Offset output:
–7 V
Stimulus outputs:
0…7 V
Operating voltage:
230 V, 50…60 Hz
Measurement of masses
Necessary Software module:
Software Cobra3 Balance (14470.61) or
Software Cobra3 CHEM-UNIT (14520.61)
Measurement of masses
The PHYWE software "Balance" and “CHEM-UNIT“ allow balances with serial interfaces (RS232) to be connected
to a computer. The software transfers measurement values to the PC, displays them in a demonstrative manner
during the measurement and saves them for archiving purposes.
Software features:
- Display of measurement values during the measurement in a digital, analog or graphic form (either separately
or simultaneously)
- Measurement value conversion during the measurement (online)
- Saving of measurement values/measurement series
- Numerous different ways of measurement value evaluation after the measurement
- Printing of measurement values as graphs or tables
- Comparison of several measurements
- Export of measurement values into other Windows® programs
- Manual input of series of measurement values
- Calculation of values using a function generator
- and many more
Note concerning the "Cobra3 CHEM UNIT" software:
If you use this software, you have to connect a Cobra3 CHEM-UNIT to the PC in addition to the balance in order
to be able to transfer values from the balance to the PC.
46
Measuring quantities, Measuring modules and sensors
Cobra3 Accessories
Digital large-format display
07157.93
Special four-digit large-format display for presenting the measurement data supplied by the Cobra3 COM-UNIT,
the PHYWE handheld measuring instruments and Sartorius or Denver balances equipped with data interfaces.
- 4-digit digital display with a digit height of 56 mm
- Matrix display (15 x 14 pixels) for presenting the units
- Serial interface (RS 232) for connecting a measuring instrument
- Second connector for the simultaneous presentation of another measuring quantity
- Threaded connectors for connecting support stands or a clamp (to attach the display to various experimental
set-ups).
- Fit for the future: The large-format display can be updated and adapted to other measuring instruments which
are not available on the market yet.
Also included: Power supply 12 V/1 A with plug, support rod with thread
Necessary accessories: Data cable 2xSub-D, 9-pin type 14602.00, support clamp for small cases 02043.10
Technical data:
- Screw thread:
2 x M6, 1 x M4
- Display: 7 Segment LED
d = 7/10 mm; l = 120 mm
- Display range (4-digit):
0...9999; (3.5-digit): ± 1999 - Support rod:
- Height of matrix display:
15 x 14 pixel
- Power supply:
230 V~/12 V, 1 A
- Dimensions of matrix display (mm): 60 x 65
- Dimensions (mm): 40 x 110 x 340
- Port:
9-polig Sub-D (RS232)
Power supply Cobra3
12151.99
Converter USB - RS232
14602.10
To ensure the power supply of a Cobra3 BASIC-UNIT, Cobra3 CHEM-UNIT, Cobra3 COM-UNIT, Cobra3 DISPLAYUNIT and approximately 4 other UNITs.
Technical data:
Voltage input:
100…240 V AC /0.5 A / 47…63 Hz
Connection:
female connector for non-heating apparatuses
(one male connector for non-heating apparatuses is included)
Voltage output:
+ 12 V / 2 A
Connecting cable: low-voltage plug
Active converter with a USB connector and a 9-pin Sub-D connector. This connector has to be connected to the
female USB connector and provides a serial interface with a 9-pin SUB-D connector. It is used to connect a Cobra3
BASIC UNIT, a Cobra3 CHEM UNIT and all other units equipped with serial interfaces to a PC lacking such an
interface. Instead, the serial interface is connected to a USB interface of the PC through the converter. The
Converter USB - RS232 comes supplied with a CD with drivers. Cable length: 1.8 m
Data cable 2xSub-D, 9-pin type
14602.00
Versatile connecting cable (plug/socket) for the following connection types:
• connection of the BASIC-UNIT with the serial interface of a PC
• connection of the CHEM-UNIT with the serial interface of a PC
• connection of the COM-UNIT with the Cobra3 DISPLAY-UNIT
• connection of the COM-UNIT with a Digital large-format display
• connection of up to 4 Digital large-format displays among each other
• connection of up to 2 Cobra3 DISPLAY-UNITs among each other
• connection of Cobra3 sensor port with Cobra3 measuring module converter
• etc.
Cobra3 measuring module converter
12150.04
To connect a Cobra3 measuring module to one of the sensor ports of the BASIC-UNIT. The converter is plugged
onto the measuring module by means of the 25-pin female connector. The 9-pin male connector is connected
to the sensor port using a data cable (Art.No. 14602.00).
USB 2.0 4-Port HUB, with power pack
14612.00
If your computer does not have sufficient USB ports for connecting several PHYCON Interfaces, you can connect
a USB HUB to one of your USB ports. This then provides you with 4 USB ports (Fig. similar).
Technical data:
• USB HUB with 4 USB ports 2.0 Type A
• Including external power pack
• Including USB A-B cable, 1.8 m long
• Including CD with drivers
Support clamp for small cases
02043.10
The clamp can be screwed to the back of the Cobra3 BASIC-UNIT, CHEM-UNIT, COM-UNIT, DISPLAY-UNIT or
Digital large-format display thus allowing to attach the UNITs to a support stand for presentation
purposes.
47
Cobra3 packages
The Cobra3 Starter Set for Physics, Chemistry and Biology
The Starter Set consists of:
Description
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Softw. Cobra3 Universal recorder
Software Cobra3 Timer/Counter
Softw. Cobra3 translat./rotation
Software Cobra3 Temperature
Light barrier, compact
Photo diode, G1
Wire resistor 0,2 Ohm, 2W, G1
Temperature sensor, -10..120°C
Handbook Physics, Computerassisted
experiments with Cobra3
Handbook Chemistry/Biology, Computerassisted experiments with Cobra3
Art.No.
12150.00
12151.99
14602.00
14504.61
14511.61
14512.61
14503.61
11207.20
39119.01
39104.69
12120.00
Quanity
1
1
1
1
1
1
1
1
1
1
1
01310.02
1
01320.02
1
This Cobra3 Starter Set can replace the
following equipment:
mechanical plotter (xy, 2yt)
multimeter
digital counter – Frequency- and event counting
electronic stopwatch
instrument for measuring paths, velocity and acceleration
photometer (relative measurement)
thermometer
etc.
Remark: additionally required material, e.g. Power supply,
glassware, chemicals, support material etc. are not included in
this package.
48
12170.66
The following experiments can be
realised with the Cobra3 Starter Set:
Physics:
Frequency of a spring pendulum
Frequency of a thread pendulum
Ohm's Law
Temperature dependence of the resistance of pure metals
Switch-on current of a incandescent bulb
Measurement of the work and power of an incandescent bulb
Induction impulse
Free fall with a screen
The path-time law for free fall with the
falling sphere apparatus
Uniform, linear, unaccelerated motion
Pendulum oscillations-variable g pendulum
The harmonic oscillation of helical springs parallel and series connection of spring
Dependence of the oscillation period of a leaf spring
on the pendulum length & pendulum mass
Specific heat capacity of water
Specific evaporation heat of water
Specific heat capacity of liquids
Single-valued and multiple-valued Fourier spectra
Spectral analysis of different signal forms sinusoidal, rectangular, triangular signals
Chemistry:
Electrolysis of copper sulphate solutions
The electrochemical series of metals
Electric potential of a concentration element
Biology:
Daily course of luminosity
Changes in the blood flow during smoking
Glycolysis
The isolating effect of body coverage
Comparison of the heat capacities of water and land
The Bergman rule: heat loss in dependence on
body surface area and volume
P1330100
P1330200
P1330300
P1330400
P1330800
P1330900
P1331200
P1336900
P1337000
P1337100
P1337700
P1337800
P1337900
P1349100
P1349200
P1349300
P1361100
P1361300
P1331800
P1331900
P1332000
P1332500
P1350700
P1351400
P1351100
P1350900
P1351000
Cobra3 packages
The Cobra3 Physics Set
12171.66
The following experiments can be
realised with the Cobra3 Physics Set:
Mechanics
The Physics Set consists of:
Description
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Universal recorder
Software Cobra3 Timer/Counter
Software Cobra3 translat./rotation
Software Cobra3 Temperature
Software Cobra3 Fourieranalysis
Light barrier, compact
Photo diode, G1
Wire resistor 0,2 Ohm, 2W, G1
Temperature sensor, -10..120°C
Beam stopper
Measuring microphone with amplifier
Handbook Physics, Computerassisted
experiments with Cobra3
Art.No.
12150.00
12151.99
14602.00
14504.61
14511.61
14512.61
14503.61
14514.61
11207.20
39119.01
39104.69
12120.00
02504.00
03543.00
Quanity
1
1
1
1
1
1
1
1
2
1
1
2
1
1
01310.02
1
This Cobra3 Physics Set can replace the
following equipment:
storage oscilloscope (up to 0,5 MHz)
frequency analyser (Fourier analysis)
mechanical plotters (xy, 2yt)
multimeter
digital counter – Frequency- and event counting
electronic stopwatch
instrument for measuring paths, velocity and acceleration
photometer (relative measurement)
thermometer etc
Remark: additionally required material, e.g. Power supply,
glassware, chemicals, support material etc. are not included in
this package.
Frequency of a spring pendulum
Frequency of a thread pendulum
Free fall with a screen
Uniform, linear, unaccelerated motion
Uniformly accelerated, linear motion, Newton`s 2nd law
Frequency of a thread pendulum
Pendulum oscillations-variable g pendulum
The harmonic oscillation of helical springs parallel and series connection of spring
Dependence of the oscillation period of a leaf spring
on the pendulum length & pendulum mass
Acoustics
P1330100
P1330200
P1336900
P1337100
P1337300
P1337600
P1337700
P1337800
P1337900
Measurement of frequency of tuning forks,
detuning of tuning forks
Investigation of the natural oscillation of columns of air
Measurement of the speed of sound in air
Measurement of the speed of sound in diffent gases
Measurement of the speed in metal rods
P1336000
P1336100
P1336200
P1336300
P1336400
Specific heat capacity of water
Specific evaporation heat of water
Specific heat capacity of liquids
Specific heat capacity of solid bodies
Specific condensation heat of water
Specific melting heat of ice
Specific dissolution heat of salts
P1349100
P1349200
P1349300
P1349400
P1349500
P1349600
P1349700
Ohm's Law
Temperature dependence of the resistance of pure metals.
Characteristics of semi-conductor diodes
Collector current-collector voltage characteristic of an NPN-trans.
Second order conductors
Switch-on current of a incandescent bulb
Measurement of the work and power of an incandescent bulb
Switch-on behaviour of a capacitance
Induction impulse
Generation of an alternating current, rectification and filtration
Dependence of the luminous intensity on the distance
Current-voltage characteristic of a solar cell
Single-valued and multiple-valued Fourier spectra
Spectral analysis of different signal forms sinusoidal, rectangular, triangular signals
Analysis of Fourier series
High-pass, low-pass, bandpass filters
Switch rebound
Phase relationships in a series resonant circuit
Free damped oscillation
P1330300
P1330400
P1330500
P1330600
P1330700
P1330800
P1330900
P1331000
P1331200
P1331300
P1331500
P1336700
P1361100
Thermodynamics
Electricity
P1361300
P1362600
P1362700
P1363100
P1363200
P1363300
49
Cobra3 packages
Chemistry Set
Cobra3 CHEM-UNIT
12174.66
The Chemistry Sets consist of:
CHEM-UNIT Set (12174.66)
BASIC-UNIT-Set (12172.66)
Description
Cobra3 BASIC-UNIT
Cobra3 CHEM-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 CHEM-UNIT
Software Cobra3 Universal recorder
Software Cobra3 Temperature
Software Cobra3, Pressure
Software Cobra3 pH and potential
Measuring module, pressure
Measuring module pH/potential
pH-electrode, polythene sheathed
pH-electrode, plastic, refill, BNC
Protection sleeve for pH electrode
Measuring module Temp., NiCr-Ni, 330 °C
Immersion probe NiCr-Ni, teflon, 300 °C
Conductivity/temperature electrode
Wire resistor, 0,2 Ohm, 2W, G1
Handbook Chemistry/Biology, Computerassisted experiments with Cobra3
Art.No.
Quantity
12150.00 1
12153.00
1
12151.99 1 1
14602.00 1 1
14520.61
1
14504.61 1
14503.61 1
14510.61 1
14509.61 1
12103.00 1
12101.00 1
18450.00 1
46266.15
1
37651.15
2
12104.00 1
13615.05 1 1
13701.01
1
39104.69 1
01320.02
1
1
This Cobra3 Chemistry Sets can replace
the following equipment:
mechanical plotters (xy, 2yt)
multimeter
barometer
manometer
pH-meter
conductivity measuring device
thermometer
etc.
50
Chemistry Set
Cobra3 BASIC-UNIT
12172.66
The following experiments can be
realised with the Cobra3 Chemistry Sets:
Food chemistry
The manual titration of citric acid
Changes in pH during the aging of milk (souring)
The buffering properties of foods
Calorimetry of foods
Ecology and environment
The conductivity of various water samples
The pH of various water samples
The origin of acid rain
Biochemistry
Substrate inhibition of enzymes
Enzyme inhibition (poisoning of enzymes)
Electrolysis
Electrolysis of copper sulphate solutions
The electrochemical series of metals
Electric potential of a concentration element
Gas laws
Gay-Lusac´s law
Amonton´s law
Boyle's and Mariotte's law
P13705-30/40
P13711-30/40
3)
P13712-30/40
1)
P1351500
3)
3)
P1370140
P13702-30/40
3)
P13703-30/40
2)
3)
3)
3)
P13699-30/40
P13700-30/40
P1331800
P1331900
1)
P1332000
1)
1)
P1350000
P1350100
1)
P1350200
1)
1)
only with Cobra3 BASIC-UNIT
only with Cobra3 CHEM-UNIT
1)
with Cobra3 BASIC- or CHEM-UNIT
1)
1)
Remark: additionally required material, e.g. Power supply,
glassware, chemicals, support material etc. are not included in
this package.
Cobra3 packages
The Cobra3 Biology Set
12173.66
The Biology Set consists of:
Description
Cobra3 BASIC-UNIT
Power supply 12V/2A
Data cable, plug/socket, 9 pole
Software Cobra3 Universal recorder
Software Cobra3 Temperature
Software Cobra3, Pressure
Software Cobra3 pH and potential
Measuring module, pressure
Measuring module pH/potential
pH-electrode, polythene sheathed
Photo diode, G1
Temperature sensor, -10..120°C
Acoustic probe for Cobra3
Handbook Chemistry/Biology, Computerassisted experiments with Cobra3
Art.No.
12150.00
12151.99
14602.00
14504.61
14503.61
14510.61
14509.61
12103.00
12101.00
18450.00
39119.01
12120.00
03544.00
Quantity
1
1
1
1
1
1
1
1
1
1
1
2
1
01320.02
1
The following experiments can be
realised with the Cobra3 Biology Set:
Food chemistry
The manual titration of citric acid
Changes in pH during the aging of milk (souring)
The buffering properties of foods
Ecology and environment
The pH of various water samples
The origin of acid rain
The twenty-four hour rhythm of an aquatic plant
Comparison of the heat capacities of water and land
The Bergman rule: heat loss in dependence
on body surface area and volume
The isolating effect of body coverage
Daily course of luminosity
Biochemisty
This Cobra3 Starter Set can replace the
following equipment:
mechanical plotter (xy, 2yt)
multimeter
barometer
pH-meter
thermometer
photometer (relative measurement)
etc.
The ionic permeability of the cell membrane
Substrate inhibition of enzymes
Enzyme inhibition (poisoning of enzymes)
P1370530
P1371130
P1371230
P1370230
P1370330
P1370430
P1350900
P1351000
P1351100
P1332500
P1369730
P1369930
P1370030
Human physiology
Cardiac and vasular
sonic measurement (Phonocardiography)
The enzymatic activity of catalase
Blood pressure measurement
Regulation of body temperature
Plant physiology
Photosynthesis (measurement of oxygen pressure)
Transpiration of leaves
Glycolysis (measurement of pressure)
Glycolysis (measurement of temperature
Calorimetry of foods
P1332600
P1360700
P1350500
P1350800
P1351300
P1351200
P1360900
P1351400
P1351500
Remark: additionally required material, e.g. Power supply,
glassware, chemicals, support material etc. are not included in
this package.
51
Phywe measuring devices with PC interface!
This overview shows you all PHYWE units equipped with a direct PC interface. You can control these units with the help of our "measure"
software and a PC without the Cobra3 interface system. You can also evaluate the measurements in the usual way in the "measure"
software. Please do not hesitate to contact us if you need further information concerning the units!
Ultrasonic in air
X-Ray Unit 35 kV
Integrated storage box
Two LED-Displays
Quick change x-ray
tube technology:
3 different tubes
can be used
eingebautes
Ratemeter
Fluorescent screen
RS232-interface
for PC-control
Visible x-ray tube
Ultrasonic Unit
Goniometer Operation Unit
Software Goniometer
13900.00
13903.99
14523.61
Demo multimeter p, pH, T, U, I, R, f
Demo multimeter, RS232
Software for Demo multimeter
52
X-Ray Unit 35 kV
Software for X-Ray Unit 35 kV
Built-in goniometer
09058.99
14407.61
Work and power meter
13721.93
14409.61
Temperature meter digital, 4-2
Temperature meter, digital
Software for temperature meter, digital
Operating panel
Work and power meter
Software for Work and power meter
13715.93
14403.61
Digital pH-meter
13617.93
14405.61
Digital pH-meter
Software for Digital pH-meter
13702.93
14408.61
Phywe measuring devices with PC interface!
Digital conductivity meter
Digital conductivity meter
Software for Digital conductivity meter
Franck-Hertz-Experiment
13701.93
14400.61
Multi-Channel-Analyzer
Franck-Hertz control unit
Software for Franck-Hertz experiment
09105.93
14522.61
GREAT ADVANTAGE!
Update possible!!!
Both the firmware of many Phywe devices
and the measuring software „measure“
can be easily updated under:
Multi-Channel-Analyzer
Software for Multi-Channel-Analyzer
13726.99
14424.61
Balances with RS232 interface
www.phywe.com
Electric field meter
Balances with RS232 interface (Sartorius, Denver, Scaltec)
Software Balance
14470.61
Electric field meter
Software for Electric field meter
11500.10
14406.61
Phywe hand-held measuring devices (with Datalogger) for environmental experiments
Oxygen
07135.00
07136.00
07137.00
07138.00
07139.00
07140.00
Pressure
LUX
Oxygenmeter, hand-held, RS232, Datalogger
Barometer/Manometer, hand-held, RS232, Datalogger
Lux meter, hand-held, RS232, Datalogger
Conductivity meter, hand-held, RS232, Datalogger
pH-potential meter, hand-held, RS232, Datalogger
Temperature meter 2 x NiCr-Ni, hand-held, RS232, Datalogger
Conductivity
14420.61
14419.61
14418.61
14417.61
14416.61
14415.61
pH
Temperature
Software Oxygenmeter, hand-held
Software Barometer/Manometer, hand-held
Software Lux meter, hand-held
Software Conductivity meter, hand-held
Software pH-/potential meter, hand-held
Software Temperature meter 2 x NiCr-Ni, hand-held
Overview
Current probe 6 A (12126.00)
Current probe 30 A (12127.00)
Standard industry sensors (24 V-)
Page measurement module Software modul measure Unit Sample Experiments in Handbook Cobra3
36 without
Universal recorder
Ohm´s law (P1330300)
Shunt resistor (e.g. 39104.69) (14504.61)
36 without
Universal recorder
Heat capacity of gases (P2320211)
(14504.61)
45 Function generator PowerGraph (14525.61)
RLC Circuit (P2440611)
Universal recorder (14504.61)
Inductance of solenoids (P2440311)
(12111.00)
45 Industry sensor
PowerGraph (14525.61)
adapter (12132.00)
Light barrier with counter (11207.30)
Light barrier, compact (11207.20)
36
Path-time law
Falling sphere apparatus (02502.88)
37
without
Distance/angle
Movement sensor with cable (12004.10)
36
without
Force
Newton sensor ± 50 N (12125.00)
37
without
Force
Newton sensor (12110.02)
37
Pressure
without
40
Newton
(12110.00)
Pressure
(12103.00)
Pressure
without
40
without
41
Frequency, level,
spectrum
Pressure sensor, 2 bar abs. (12128.00)
Pressure sensor, 2 bar diff. (12129.00)
Pressure sensor, 80 mbar diff. (12130.00)
Hall probe, axial (13610.01)
Hall probe, tangential (13610.02)
Counter tube, Typ A (09025.11)
Counter tube, Typ B (09005.00)
Measuring microfon (03542.00)
Microfon with amplifier (03543.00)
Tesla
(12109.00)
GM Counter tube
(12106.00)
without
Temperature
Temperature sensor, -10...120 °C (12120.00)
39
Temperature
Temperature Pt100
(12102.00)
Wind speed
Temp.probe, immersion type, Pt100 (11759.01) 39
Surface temperature probe, Pt100 (11759.02)
Temperature probe, imm., teflon (11759.04)
Immersion probe NiCr-Ni, -50...1000°C (13615.03) 39
Thermocouple NiCr-Ni, sheathed (13615.01)
Thermocouple NiCr-Ni, 500°C max. (13615.02)
Surface probe NiCr-Ni (13615.04)
Immers.probe NiCr-Ni, teflon, 300°C (13615.05)
Cup anemometer (12124.00)
44
without
Humidity, temperature
Lux
Humidity sensor (12121.00)
Luxmeter probe (12107.01)
44
40
pH and Potential
pH-electrode, polythene sheathed (18450.00)
pH-electrode, shock resistant (18452.00)
42
46
without
Lux
(12107.00)
pH/Potential
(12101.00)
Conductivity
(12108.00)
Oxygen
(12105.00)
without
40
without
38
without
pH electrode, plastic body, gel,
43
BNC (46265.10)
Redox electrode,
BNC (46267.10)
Ag/AgCl reference electrode (18475.00) 42
without
Magn. flux density
Radiation
Temperature
41
38
Conductivity
Conductivity probe (18151.02)
Oxygen
Oxygen / Temperature electrode (12105.01) 43
EOG
ECG
EMG
Lux
Biological amplifier (65961.93)
ECG electrodes (65981.01)
EMG electrodes (65981.02)
Photo diode, BPW24, G1 (39119.01)
Cardiac/vascular sonic Acoustic probe (03544.00)
pH-value
Potential
43
Conductivity/Temperature Conductivity/temp.electrode (13701.01) 43
Temperature
Temp.probe, imm.type, Pt1000 (12123.00) 39
Thermocouple NiCr-Ni, sheathed (13615.01)
Immersion probe NiCr-Ni, -50...1000°C (13615.03)
Immersion probe NiCr-Ni, teflon, 300°C (13615.05)
Surface probe NiCr-Ni (13615.04)
Thermocouple NiCr-Ni, 500°C max. (13615.02)
Voltage
Current (Shunt)
Mass
Temperature probe Pt1000, glass,
4-mm connectors (13702.01)
without
40
Balance
46
without
Timer/Counter
(14511.61)
Translation/Rotation*
(14512.61)
Timer/Counter
(14511.61)
Translation/Rotation*
(14512.61)
Force/Tesla*
(14515.61)
Force/Tesla*
(14515.61)
Pressure*
(14510.61)
Gas laws*
(14516.61)
Pressure*
(14510.61)
Force/Tesla*
(14515.61)
Radioactivity*
(14506.61)
Fourieranalysis
(14514.61)
Timer/Counter
(14511.61)
Temperature*
(14503.61)
Temperature*
(14503.61)
Frequency of a thread pendulum (P1330200)
Force-free, linear motion
(P1337200)
The path-time law for free fall with the
falling sphere apparatus (P1337000)
Uniform, linear, unaccelerated
motion (P1337100)
Coulomb´s law (P2420415)
Gay-Lussac´s law (P1350000)
BASIC-UNIT (12150.00)
Current, Voltage,
Frequency
Voltage (0-10 V)
Current (0-20 mA)
Current (4-20 mA)
Time/distance/angle
Measurement probes
without
Temperature NiCr-Ni Temperature*
(12104.00)
(14503.61)
Weather station
(14518.61)
PowerGraph (14525.61)
Lux*
(14507.61)
pH/Potential*
(14509.61)
Conductivity*
(14508.61)
Oxygen*
(14505.61)
Universal recorder
(14504.61)
CHEM-UNIT
(14520.61)
Amonton´s law (P1350100)
Hall-Effect in p-Germanium (P2530115)
Range of alpha particles in the air
(P1363400)
Investigations of beats (P1361500)
Measurement of frequency of tuning forks,
detuning of tuning forks (P1336000)
The isolating effect of body coverage
(P1351100)
Specific heat capacity of liquids
(P1349300)
Volume expansion of gases (P1349900)
Photosynthesis (bubble-counting method)
(P1360800)
The automatic titration of ordinary vinegar (P1370600)
The pH and degree of acidity of coffee (P1370830)
Determination of the Michaelis constant (P1369800)
Electrooculography (P1350400)
Electrocardiography (P1332700)
Electromyography (P1350300)
Dependence of the luminous intensity
on the distance (P1331500)
Cardiac and vascular sonic meas. (P1332600)
CHEM-UNIT (12153.00)
Measuring quantity
Voltage
Current (Shunt)
Current
*you can alternatively use Software PowerGraph (14525.61)
The automatic titration of ordinary vinegar
(P1370640)
Determination of the common salt content of meat broth
(P1371440)
Determination of the Michaelis constant (P1369840)
The Starter and students´ USB-Interface for Physics, Chemistry and Biology!
The PHYCON interface software makes measuring easy:
• Automatic sensor detection with visualisation of the
connected sensors in the software
• Up to 8 sensors can be connected at any one time
• Clearly designed
• All control elements are always visible
• Intuitive to use
• Real-time display of all measured values
• The experiment parameters can be saved and reloaded
• Many and diverse analysis functions in the main “measure”
program
PC-Software
PHYCON
USB-Interface
28 different sensors
Sensor
Force sensor 12558.00
System overview PHYCON-USB-Interface
Software
Software PHYCON-Interface (14450.61)
Interface
PHYCON, USB-Interface (12500.00)
The PHYCON interface
makes it particularly easy
for you to get to grips with
computer-aided
experiments:
• Its compact size makes it
easy to handle
• Is connected to the PC via
the USB interface and is
automatically identified by
the operating system
• Doesn’t require a power
pack, as it is supplied with
electricity from the PC via
the USB interface
• Ideal for multi-channel
measurements, as up to 8
PHYCON interfaces can be
connected to a PC at any
one time
• Its low price makes its
extremely suitable for
student exercises too
• Due to the clearly designed
and intuitively used
software you will quickly
and easily obtain your
measurement results
• The large number of
sensors available, which
can be connected to
PHYCON, enables universal
use in physics, biology and
chemistry lessons
Sensors
Detecting element
Voltage sensor, - 10...+ 10 V
(12576.00)
Differential voltage sensor, - 6...+6 V
(12556.00)
Instrument amplifier
(12563.00)
Current sensor, –0,6 .. +0,6 V
(12555.00)
Temperature sensor, –40 .. +130°C
(12570.00)
Surface temperature sensor,
–40 .. +130 °C (12572.00)
Temperature sensor, long,
–50 .. +150°C (12571.00)
Thermocouple box, NiCr-Ni,
–200 .. +1400°C (12573.00)
integrated in the sensor
Measured
variable
Voltage
integrated in the sensor
Voltage
integrated in the sensor
Voltage
integrated in the sensor
Current
integrated in the sensor
Temperature
integrated in the sensor
Temperature
integrated in the sensor
Temperature
Thermocouple, micro-sheath (13615.01)
Thermocouple, single (13615.02)
Thermocouple, submersible sensor (13615.03)
Thermocouple, surface (13615.04)
Thermocouple, teflon (13615.05)
integrated in the sensor
Temperature
integrated in the sensor
Pressure
integrated in the sensor
Force
integrated in the sensor
integrated in the sensor
Magnetic flux
density
Acceleration
integrated in the sensor
Acceleration
integrated in the sensor
Illuminance
integrated in the sensor
UV intensity
integrated in the sensor
UV intensity
integrated in the sensor
Sound level
integrated in the sensor
Air humidity
pH electrode, plastic, gel-filled, BNC (46265.15)
pH electrode, plastic, refillable, BNC (46266.15)
pH electrode, glass, refillable, BNC (46268.10)
Platinum redox electrode, plastic, gel-filled, BNC (46267.10)
integrated in the sensor
pH-value
integrated in the sensor
integrated in the sensor
Absorption
Transmission
Oxygen content
integrated in the sensor
Oxygen content
integrated in the sensor
ECG
integrated in the sensor
Pulse
Respiratory frequency cuff (12568.00)
Respiration
frequency
Pressure sensor (barometer),
810 .. 1060 hPa, absolut (12552.00)
Pressure sensor, 0 .. 2100 hPa,
absolut (12562.00)
Force sensor, –50 .. +50 N,
(12558.00)
Magnetic field sensor
(12565.00)
Acceleration sensor, 25-g,
–250 .. +250 m/s2 (12550.00)
Acceleration sensor, 5-g,
–50 .. +50 m/s2 (12551.00)
Light sensor
(12564.00)
UVA sensor, ~320 .. ~390 nm
(12574.00)
UVB sensor, ~290 .. ~320 nm
(12575.00)
Sound level meter, 0...130 dB
(12569.00)
Air humidity sensor, 0...95%
(12567.00)
Electrode amplifier, -450...+1100 mV
(12560.00)
Conductivity sensor
(12554.00)
Colorimeter, 430/470/565/635 nm
(12553.00)
Oxygen sensor for O2
(12557.00)
Oxygen sensor for gaseous O2
(12566.00)
ECG sensor
(12559.00)
Heart rate sensor
(12561.00)
Pressure sensor, 0...2100 hPa,
absolute (12562.00)
Pressure
electrochemical
potential
Conductivity
PHYWE SYSTEME GMBH & CO. KG
2005.07.15 Art. Nr.: 00200.02
phone: +49 551 604-0
fax: +49 551 604-107
E-Mail: int.sales@phywe.com
Internet: www.phywe.com
We reserve ourselves all rights concerning errors, translation, technical data, partial reproduction und photocopies!
Robert-Bosch-Breite 10
D-37079 Göttingen