Coil Turns Tester
MODEL AB-301
Coil turns Tester model AB-301 is used to measure the number of turns of a
coil immediately after it is wound. It consists of readout unit & selected
platform.Same readout unit can be used with different type of platforms.
Quick & easy to operate it provides an instant readout of turns, and
performance is not affected by a normal workshop environment.
In operation the setting\calibration is made against a standard coil.
The coil under test is placed on the appropriate platform & the ends of the
coil are connected to the pair of terminals. The number of turns of a test coil
is indicated on the digital readout immediately after making the connection.
The coil turns tester that has no moving parts may be used in conjunction
with any of the plug-in platform described in the leaflet.
The platforms type 301-1 & 301-2 cover the most commonly found sizes of
wound bobbins or self-supporting coils.
Simple to use, the bobbin is placed over the probe & the termination leads,
connected to the platform.
The number of turns on the bobbin is then instantly on the readout unit.
Features:
A B I n s t ru m e n t s
www.a bin struments.c om
Measures number of turns of air & torroid (with core) transformers
Tests two windings of same transformer.
Polarity comparison is provided.
Accuracy upto 0.2%
Measures upto 1 lakh turns.
Selection of platforms for different sizes
Ideal for QA purpose.
SPECIFICATION:
1) Display 4 & ½ digit RED LED
2) Ranges a) 0-1999.9 Turns
b) 2000-19999 Turns
c) > 20000 Turns
3) Operating Temperature – 0-50 Deg C
4) Power 230VAC +/- 10 %, 50 Hz
5) Size 350(D) 110(H) 245(W) mm approx.
6) Weight 4 Kgs approx
7) Two turns can be read of same coil with switch setting at platform.
8) Polarity check available.
*Warm up time 15 minutes.
*Calibration routine adjustment Interval for consistent accuracy – 2 Hrs.
Three Ranges are available
a) 1K This is suitable for coils upto 1999.9 turns
b) 10K This is suitable for coils from 1999 to 19,999 turns
c) 100K This is suitable for coils having turns >20000 & upto 40000.
. In most cases a coil above 19999 turns is unlikely to give an accurate reading because of
self-capacitance in the winding.
Coil Platforms
Dimensions of Rod
Accuracy using
Standard coil supplied
identical sample
Max.Coil size that will
Fit in conical shape of
Max.Coil size that will Fit
In Cylindrical shape of
Platform Size
Weight
301-1
301-2
301-3
10 mm dia
0.5% ± 1 digit
6.5 mm dia
0.5% ± 1 digit
3X3 mm sq
0.5% ± 1 digit
0.2% ± 1 digit
140H
90 mm base dia
--
0.2% ± 1 digit
65mmH
50mm base dia
--
0.2% ± 1 digit
--
310x1120 mm
1.2 Kg
190x120 mm
1.2 Kg
32mm height
25mm base dia
190x120
1.2Kg
Note – The turns are to be tested without core i.e. in bobbin form.
Torroidal platforms are available which measures turns with core
The platforms types 301-6 & 301-7 are specially designed to measure torridal wound
coils .The 301-6 is suitable for small cores & type 301-7 is suitable for larger verities.
In operation the probe is pulled forward & the core is placed over it.
After returning it to the upright position, the level is set to suit the permeability of the
cores being measured.
This is done by adjusting a front panel potentiometer. Electrical connection is made
between the platform & the coil lead-outs & the number of turns is read from AB-301
readout unit.
Coil Platforms
Dimensions of Rod
Accuracy using internal
Standard
Accuracy using identical
coil
Extreme coil dimensions mm
Platform Size mm
301-6
3mm
0.5% ± 1 digit
301-7
301-8
5mm
0.5% ± 1 digit
10mm
0.5% ± 1 digit
0.2% ± 1 digit
0.2% ± 1 digit
0.2% ± 1 digit
ID= 3.5,OD= 30
205x305x220
ID=5.5,OD= 50
205x305x220
ID=11,OD =60
205x305x220
Note : Being under continuous development/product improvement policy ,the specifications & or looks/dimentions
may be changed without notice.