CTRL2 PH(RX)EC
DUAL MEASURE PARAMETER CONTROLLER
PH or REDOX (ORP) / EC CONDUCTIVITY
OPERATING INSTRUCTIONS AND MAINTENANCE
CTRL2 PH(RX)EC
CTRL2 B PH(RX)EC
FWT SYSTEMS S.r.l.
Via Cancelliera 16,
Ariccia (RM) 00072, ITALIA
Tel.+39 06 9311940 / 06 9316 0328
Fax +39 06 99334972
info@fwtsystems.it
Rev. 01_0620
www.fwtsystems.it
INDEX
CTRL2 PH(RX)EC DUAL PARAMETER CONTROLLER • USER INFORMATION SIGNS
page 3
CONTROLLER DESCRIPTION
page 4
1.0
HINTS AND WARNING
page 4
2.0
ENCLOSURE, MOUNTING AND COMMISSIONING
page 5
2.1 - WALL MOUNTING ENCLOSURE CTRL
page 5
2.2 - WALL MOUNTING ENCLOSURE CTRL2 B
page 6
2.3 - WIRING CONNECTORS
page 7
2.4 - CONNECTING PH OR RX (ORP) ELECTRODE
page 7
2.5 - CONNECTING CONDUCTIVITY SENSOR
page 7
2.6 - CONNECTING TO MAIN POWER SUPPLY / PARALLEL CONNECTIONS
page 8
3.0
DISPLAY DESCRIPTION
page 9
4.0
TERMINAL BOARD ELECTRICAL WIRING
page 10÷11
5.0
OPERATING MODES GLOSSARY
page 11÷12
6.0
PROGRAMMING FUNCTIONS
page 13
7.0
INPUTS / OUTPUTS DIAGRAM FUNCTIONS
page 13
8.0
INITIAL DISPLAY
page 14
8.1 - PROGRAMMING MENU LANGUAGE
page 14
8.2 - SELECTING MEASURING PARAMETER 1 PH or RX (ORP)
page 14
8.3 - SELECTING “K” FACTOR CELL CONSTANT CONDUCTIVITY RANGE
page 15
8.4 - TEMPERATURE SETTINGS
page 15
8.5 - PROGRAMMING MENU
page 15
9.0
MAIN MENU > BASIC PROGRAMMING MENU
page 16
10.0
SET POINT1 pH or SET POINT1 RX (ORP) > BASIC MENU
page 16÷17
11.0
SET POINT2 pH or SET POINT2 RX (ORP) > BASIC MENU
page 17÷18
12.0
SET POINT3 EC (CONDUCTIVITY) > BASIC MENU
page 18÷19
13.0
SENSORS CALIBRATION > BASIC MENU
page 19÷20
14.0
SETTINGS > BASIC MENU
page 20÷21
15.0
MAIN MENU > EXPERT PROGRAMMING MENU
page 21
16.0
SET POINT1 pH or SET POINT1 RX (ORP) > EXPERT MENU
page 22÷24
17.0
SET POINT2 pH or SET POINT2 RX (ORP) > EXPERT MENU
page 24÷25
18.0
SET POINT3 EC (CONDUCTIVITY) > EXPERT MENU
page 26÷27
19.0
4-20mA ANALOG CURRENT FUNCTION SELECTION > EXPERT MENU
page 27
19.1 - 4-20mA1 PH or RX (ORP) AUX FUNCTION
19.2 - 4-20mA1 PH or RX (ORP) DOSING SET POINT
page 28÷29
19.3 - 4-20mA2 CONDUCTIVITY AUX FUNCTION
19.4 - 4-20mA2 CONDUCTIVITY DOSING SET POINT
page 29÷30
20.0
SENSORS CALIBRATION > EXPERT MENU
page 30÷32
21.0
SETTINGS > EXPERT MENU
page 32÷33
22.0
PH / RX (ORP) ELECTRODES CLEANING AND MAINTENANCE / REDOX CURVE / EC SENSORS
page 33÷35
23.0
CTRL2 PH(RX(EC) TYPICAL INSTALLATION DIAGRAMS
page 36
24.0
OVERALL DIMENSIONS / ENCLOSURES CHARACTERISTICS
page 37
25.0
TROUBLESHOOTING CONTROLLER / TROUBLESHOOTING CONDUCTIVITY SENSORS
page 38
26.0
TECHNICAL CHARACTERISTICS CONTROLLER
page 39
CTRL2 SERIES INCLUDES SCREWS AND WALL BRACKETS FOR MOUNTING
CTRL2 series is NOT provided with sensors, which are available upon request.
FWT declines any responsibility in case the controller is used with other brand probes and sensors
2
USER INFORMATION USER INFORMATION SIGNS
WARNING: ignoring safety information can endanger life or result in serious injury !
CAUTION: ignoring safety information can result in injuries to persons or damage systems or materials !
 HIGH VOLTAGE: ignoring this sign can result in death or serious injuries to persons !
NOTE or INFORMATION SOURCE
- this symbol “pointing finger” indicates programming steps.
- if no keys are pressed within 60 seconds, controller will display current measurements
Qualified and authorized personnel must carry out any work or repair on the unit: manufacturer declines any
responsibility for consequences in case this rule is not complied.
Unqualified personnel should keep away from the plant and/or hazard areas.
The official operator of the system or the plant, when installing the unit, is responsible to fulfil the above rules.
CERTIFICATE OF CONFORMITY
FWT SYSTEMS S.r.l., head office in Via Cancelliera 16, ARICCIA (RM), 00072, ITALIA, VAT no. IT 12757091009,
hereby declares that, under our exclusive responsibility, controller series CTRL2 specified in the present booklet, complies and
is conformed with the relevant, fundamental safety and health regulations contained in the following European directives and
norms: EMC Directive 2014/30/UE and Standards:
- Electronic equipment for measurement and control of physical-chemical parameters (EMC General requirements);
- CEI EN 55011: 2013. Limits and methods of measurement for radio disturbance characteristics;
- Low Voltage Directive 2014/35/EU;
Standard: CEI EN 60950-1: 2007 Safety of information technology equipment (and similar)
This declaration conforms to the above directive and forms an integral part of the manufacturer operating manual. Any
modification at the product not approved in writing by authorized FWT personnel, will automatically invalidate this
declaration.
Rome, 14th of November 2019
Managing director
CERTIFICATE OF TESTING AND PRODUCTION PROTOCOL
FWT SYSTEMS S.r.l., head office in Via Cancelliera 16, ARICCIA (RM), 00072, ITALIA, VAT no. IT 12757091009,
hereby certifies that the controller series CTRL2 mentioned in the present booklet:
have been each TESTED before packing;
respond to the technical characteristics listed in the technical data table chart listed in the present booklet.
Rome, 14th of November 2019
Managing director
WARRANTY CERTIFICATE
FWT SYSTEMS S.r.l., head office in Via Cancelliera 16, ARICCIA (RM), 00072, ITALIA, VAT no. IT 12757091009,
hereby certifies that the controller series CTRL2 mentioned in the present booklet are covered by a WARRANTY per the policy
herein below listed. The company provides a guarantee on its products for a limited period of 1 year, EX-WORKS.
Furthermore, the present warranty does not cover goods damaged due to:
a) Use of the equipment contrary to the Manufacturing Company indication.
b) Improper installation, commissioning, and programming not in compliance with the herein instructions.
c) Repair, tampering and improper opening of the equipment without the Company written authorization.
d) Damages caused by natural events and/or unexpected circumstances (e.g. lightnings, fire, freeze, etc.).
Improper use or tampering with the equipment without FWT written permission will cancel the warranty.
Rome, 14th of November 2019
Managing director
3
CONTROLLER DESCRIPTION
The CTRL2 PH(RX)EC is a dual measure parameter controller suitable for PH or RX (ORP) and CONDUCTIVITY measurements.
CTRL2 series, along with high quality performance in terms of measurements and functions thus satisfying most of the
requirements for an instrument, it offers many features making it extremely versatile and easy to operate:
- PH measurement can be changed to RX just a simple programming and using RX electrode.
- Controller covers ranges from constant K1 up to 20.00 mS and even 50.00 mS (latter with graphite sensor sensors);
constant K5 ranges up to 2.000 μS, including other ranges from K0.6 to K0.8 (latter with graphite sensor sensors).
BENEFIT: the above feature allows dealers to stock one type for all controller thus reducing stock value or saving problems when
issuing orders to manufacturer, making this unit extremely versatile to control also other functions of the system to service.
Two types of programming menu:
Basic making life easier for those home applications such small swimming pool or water treatment systems.
Expert for professionals giving the opportunity to refine measurements and safety functions.
A friendly user menu programming it is almost self-explanatory and the elegant wide display allows easy vision.
1.0
HINTS AND WARNINGS
Please read the warning notices given in this section very carefully, because they provide important information regarding safety
in installation, use and maintenance of the unit.
• Keep this manual in a safe place, so that it will always be available for further consultation.
• The company manufactured the unit in accordance with best practice. Both its lifetime and electrical and mechanical
reliability will be enhanced if it is correctly used and subjected to regular maintenance.
1.1 - WARNING: any handling or repair for the unit must be carried out by qualified and authorised personnel only:
manufacturer declines any responsibility for consequences in case this rule is not complied.
1.2 - SHIPPING AND TRANSPORTING: shipment is always at the purchaser's risk. Claims for any missing materials
must be made within 15 (fifteen) days of goods arrival, while claims for defective materials will be considered within 30
(thirty) days from the same date. FWT SYSTEMS Srl authorized personnel must previously
agree the return of the equipment or other materials.
1.3 - PROPER USE OF THE CONTROLLER
• Controller must be used only for the purpose for which it has been expressly designed, namely the controlling and measuring
physical-chemical values. Any different use of it must be considered improper therefore dangerous.
• All other applications or modifications are prohibited.
• The equipment is NOT designed for use in explosion-hazardous locations.
• The unit can only be used for applications where technical requirements meet the ones of FWT characteristics and
specification data shown in the present operating booklet.
• The vendor is not liable for damage deriving from improper and/or unreasonable use of the unit.
1.4 - RISKS
• After unpacking the equipment, ensure it is in good shape and form. In case of doubt, do not use it and contact qualified
personnel. Keep out of reach of children packing materials (plastics bags, polystyrene, etc.) being potential sources of danger.
However, save packaging: it can be useful for future shipments.
• Before connecting the equipment ensure voltage ratings corresponds to local power supply. You will find these data in the
product label placed on the equipment and packing and the present booklet.
• The electrical installation must comply with the standards and rules in force in the country where it is utilised.
• Use of electrical equipment always implies observance of some basic rules:
1. do not touch the equipment with wet or damp hands or feet;
2. do not operate the equipment with bare feet (example: swimming pool equipment);
3. do not leave the equipment exposed to the action of the atmospheric agents;
4. do not allow the equipment to be touched by children or used by unskilled individuals without supervision;
• When commissioning the controller or in case of emergencies or improper functioning, the unit should be switched
OFF immediately. Disconnect the power cable from the main power supply !
Contact our FWT assistance for any necessary repairs, use only original spares !
Failure to respect this condition could render the equipment unsafe to use.
• When carrying out any repairs or opening the unit, ensure to disconnect it from power supply.
• When there is no longer use requirement of installed equipment, ensure to disconnect it from power supply.
1. Disconnect power from mains or from the single-pole switch-contact.
2. Take all due safety precautions during unit service (gloves, goggles, overalls, etc.).
1.5 - ASSEMBLING AND DISMANTLING THE EQUIPMENT
1.5.1. ASSEMBLY: all FWT SYSTEMS Srl controllers are fully assembled. Please refer to view drawings shown in the present
Booklet showing all details and a complete overview of all components. These drawings are useful whenever there is the need
of spare parts or for our support staff.
1.5.2. DISMANTLEMENT: before dismantling the unit or carrying any operation, disconnect power.
4
2.0
CTRL2 SERIES ENCLOSURES MOUNTING AND COMMISSIONING
CTRL2 series is available with 2 housing enclosures: CTRL2 and CTRL2 B
2.1 - WALL MOUNTING ENCLOSURE CTRL2 P66
CTRL2 enclosure IP66
ABS plastic – UL94 V0 (self-extinguish)
231w x 145,6h x 91
In the lid the enclosure has an
area recessed by 2 mm for the
mounting of membrane keypads
By using the hinged quick release
catch, the enclosures can easily be
closed by hand
- use a standard screwdriver to open
Instead of the hinged quick
release catch, enclosures can be
screwed
- suitable screws are available as
accessories and are concealed
by the hinged catch
The hinged quick-release catch
ensures that the lid cannot be lost
With the hinged quick-release catch, the lid can be opened to the left or right, in
case the enclosure is used just NOT as a controller
2.1.1 - WALL MOUNTING OPERATION
a. - Install the unit in a dry place and well away from heat sources; max environmental temperatures 40°C.
b. - Carefully observe regulations in force in the various countries as in regards electrical installations.
c. - Mount the controller on the wall using the screws and dibbles provided with the unit
Step 1: use 4 screws 2,9 x 6,5 to mount the 4 brackets onto the rear of the
enclosure. Ensure to place the screws in the right place, marking the correct spot
with a pencil before drilling
Above images show the final assembly
of the wall brackets.
Step 2: use 4 wall inserts Ø6, drive in the screws to fix the enclosure on the wall
VERY IMPORTANT NOTE FOR ENCLOSURE: when handling the unit bear in mind not to pull, drag, or
mistreat the flat cable connecting the pcb display placed on the lid with main pcb.
5
2.2 - WALL MOUNTING ENCLOSURE CTRL2 B IP56
CTRL2 B enclosure IP56
ABS plastic - UL94 HB (self-extinguish)
203,3w x 172,1h x 83,2
The enclosure features 1 captive screw (1/4 turn) for
a quick opening/closing of the lid thus allowing easy
access for commissioning and service and guarantees
a perfect seal for long time operation
Open enclosure with lid secured by
captive screw. The captive screw position
can be moved to the other three fixing
points by forcing it from original place.
Captive screw detail.
2.1.2 - WALL MOUNTING OPERATION
a. - Install the unit in a dry place and well away from heat sources; max environmental temperatures 40°C.
b. - Carefully observe regulations in force in the various countries as in regards electrical installations.
c. - Mount the controller on the wall using the screws and dibbles provided with the unit
Step 1: use 4 screws 2,9 x 6,5 to mount the 4
brackets onto the rear of the enclosure. Ensure to
place the screws in the right place, marking
the correct spot with a pencil before drilling.
Above images show the final assembly of the wall brackets.
Step 2: use 4 wall inserts Ø6 and drive in the screws to fix the enclosure on the wall.
VERY IMPORTANT NOTE FOR ENCLOSURE: when handling the unit bear in mind not to pull, drag, or
mistreat the flat cable connecting the pcb display placed on the lid with main pcb.
6
2.3 - ELECTRICAL WIRING CONNECTORS
CTRL2 is provided with 10 cable glands plus 1 BNC connector for various input and output cable wirings. Complying with
International electrical wiring rules, we advise not to connect more than one equipment on each pin.
1
2
3
3
5
4
9
7
6
CONNECTORS GLANDS USE:
8
10
11
12
1
- Use for Power cable
2…10 - Recommended use for:
- Set-points relay outputs
- mA outputs
- Level probe for chemical tank
- Flow sensor / Temperature Sensor
- Conductivity sensor
12
- BNC connector for pH or RX electrode
WHEN OPENING THE LID FOR SERVICING THE UNIT, ALWAYS DISCONNECT POWER SUPPLY !!!
2.4 - CONNECTING PH OR RX (ORP) ELECTRODE
BNC connector for pH or RX (ORP) electrode
Electrodes lifetime depends on the instalment and maintenance conditions. The longer the electrode will work
more frequent calibrations are required. We recommend using good sample solutions or fresh reliable test kit still
in good conditions (not old). For best system results, we recommend ensuring that pH is at required levels.
2.5 - CONNECTING CONDUCTIVITY SENSOR
NOTE FOR CONDUCTIVITY SENSORS
CTRL EC works with the principle of 2-electrodes conductivity open sensors, Graphite electrode or AISI 316 both with
PTFE body. Also available with AISI 316 / PVC body.
FOR CONDUCTIVITY 4/6 WIRES (with internal temperature sensor) SENSORS: due to the various types on the
market, in case operator wished to use such sensors, please contact FWT service or Local Dealer to get the right
configuration for connecting to terminal board. CTRL EC is NOT suitable for inductive sensors !
Disconnect the instrument from the power supply, install the conductivity sensor in the system or in a suitable probe holder.
It is recommended to use a new probe or one in good condition. Connect EC sensor to the internal terminal board (page 10).
PLEASE NOTE: CTRL EC automatically adapt itself to the different probes cell constant “K” characteristic consequently
adjusting the various conductivity ranges display resolution, as shown in paragraph 8.2 of this booklet.
IMPORTANT: it is essential that the user knows the probe cell constant supplied by the manufacturer of the probe.
CTRL EC STANDARD CONDUCTIVITY RANGES
It is always RECCOMENDED and mandatory to use the correct K probe according to the range in which the controller is working.
K1 2000 µS20.00 mS (20.000 μS): it can measure down to 2000 µS but accuracy will be more approximated.
K5 200 µS 2000 µS: it can measure down to 200 µS but accuracy will be more approximated.
UPON REQUEST other ranges are available only after FWT SYSTEMS Srl approval and with corresponding probe K factor:
> K 0,6 / 0,8 up to 50 mS (50.000 µS): using FWT probe with graphite electrodes or another brand equivalent type.
> K10 20 µS200 µS with appropriate probe.
CTRL EC will show μS values up to 1999 (microSiemens) above this value will automatically change to mS (milli Siemens).
7
2.6 - CONNECTING TO MAIN POWER SUPPLY / PARALLEL CONNECTIONS
PARALLEL CONNECTIONS: when connecting the unit to main power supply in parallel with other inductive equipment (motors,
pumps, blowers, solenoid and motorized valves), these gears must be electrically isolated and with a proper Ground system, to
prevent damages from inductive voltages when switching ON-OFF.
- try to use a power switch in order to have separate connections via contact relay or relay.
- when this is not possible, contact FWT technical service.
EXAMPLE CONNECTION OUTPUTS
NOTE FOR WIRING EXTERNAL EQUIPMENT
PLEASE REFER TO PARAGRAPH 4.0 “TERMINAL BOARD ELECTRICAL WIRING” PAGE 10
EXAMPLE CONNECTION CONTROLLER-MOTOR DOSING PUMP RELAYS OUT 1-2-3
1
2
CONTROLLER
REMOTE CONTROL SWITCH 230V MAX 10A
L = one phase of mains network N = neutral
3
4
SINGLE PHASE MOTOR METERING PUMP
TRI-PHASE MOTOR METERING PUMP
r - s - t = represent each phase of tri-phase mains system
SINGLE-PHASE CONNECTIONS DIAGRAM THROUGH REMOTE CONTROL CONTACT SWITCH
1
3
2
COIL
SETPOINT
OUTPUT
L
N
L
THREE-PHASE CONNECTIONS DIAGRAM THROUGH REMOTE CONTROL CONTACT SWITCH
1
4
L
N
SETPOINT
OUTPUT
2
COIL
r
s
t
KEEP IN MIND: unit with universal voltage 100250Vac (±10%) or 924Vdc. If the actual voltage is constantly at the
limit (lower or higher), or when spikes are much higher than mentioned range, the unit pcb is electronically protected
against Voltage fluctuations; outside the above-mentioned ranges, controller will not work and circuit boards must be
replaced. We RECOMMEND using voltage protections, checking system ground and, when connecting in parallel other units,
using remote contact switch. A plant not built according to correct electrical rules, without a ground system, with frequent ON/OFF
operations, could directly affect the circuit boards. It is also suggested installing a UPS (Uninterruptible Power Supply) to ensure
power continuity. A discontinuous voltage along with many On/Off operations, could affect the pcb’s integrity and Data loss.
8
3.0
DISPLAY DESCRIPTION
Temperature value**
PH measurements
EC conductivity measurements
Controller status
Other unit status here*
RX (Redox) measurements
EC conductivity measurements
Back-lit custom display (126x64)
Display visible area 70x37 mm
* Messaggi di status dello strumento mostrati come segue:
ALARM MAX-SET POINT 1-3
OVERDOSING - SETPOINT 1
OVERDOSING - 4-20mA1
ALARM MIN-SET POINT 1-3
OVERDOSING - SETPOINT 2
OVERDOSING - 4-20mA2
FLOW
OVERDOSING - SETPOINT 3
TEMPERATURE
NO LINK
L1 LEVEL CONTROL
L2 LEVEL CONTROL
If there are more than one function active, messages appear in a continuous cycle lasting 3 sec. for each item. ALARM or
OVERDOSING messages will disappear once measurements are restored according to programmed settings whilst Overdosing
icon will remain; to delete activated icons from the display, keep pressing on ESC.
When messages appear, temperature status will NOT be shown.
NO LINK: communication break down between controller and display
Error displayed: “NO LINK WITH METER 1 _ 2”: the two circuit boards, measuring and I/O, are linked together via
RS485 protocol: in this case check the electrical flat cable or the two circuit boards connecting pins alignment
or the measuring board two side selectors position; contact immediately FWT SYSTEMS service.
* Controller status messages showing as follows:
S1 S2 S3
L1 L2
ALARM
OVERDOSING
FLOW
* BASIC MENU* *EXPERT MENU * these messages appear during programming steps as reminders.
S1 S2 S3 indicating the correspondent active Set point.
When selecting “Mode Timed Pulses” (Pulse Width Modulation) during set point step, the message S1 …S2….S3 will
flash during PWM operations but when the set point is NOT active there will not be any message.
** FLOW ** shows the absence of water flow into the sensor holder: this is valid only when using a Proximity switch
and the “Flow sensor” is enable which is possible only when using “Menu Expert”.
L1 L2 indicates the “Level” control of external chemical tanks and are only shown once the floating level probe/s are
connected to the terminal block pins IN1 and IN3: when the level into the tank is lower than the level probe floater,
this will enable the Status message.
When switching ON the controller for the first time, it will appear a list of all the programming keys function.
If there are more than one function active, messages appear in a continuous cycle lasting 3 sec. for each item.
ALARM or OVERDOSING messages will disappear once measurements are restored according to
the programmed settings. When messages appear, temperature status will NOT be shown.
**Temperature value: in case the temperature has been set with Manual mode, the temperature value will correspond
to the one selected. In case has been selected the PT100 probe and such temperature sensor has been connected,
the temperature value shown will correspond to the actual value in the system and will make automatic compensation.
PLEASE NOTE: when working with “Basic menu” mA programming is NOT AVAILABLE:
9
4.0
TERMINAL BOARD ELECTRICAL WIRING
WHEN OPENING THE LID FOR SERVICING THE UNIT, ALWAYS DISCONNECT POWER SUPPLY !!!
- Unscrew the front panel and carefully open the lid.
- CTRL2 series is provided with 2 m cable already wired onto the terminal board; in case user wishes to replace the cable with a
longer one, connect the mains to neutral, earth, phase, unit switches ON, initially display quickly shows the instrument latest
software review.
• MAINS connect power supply wires to following pins: L (line), N (neutral).
The terminal board is built with special pin for top safety: ensure to twist well the wire ends, use a small
screwdriver to press the safety on top of the slot where insert the wire ends and, according International electrical
rules, we advice not to connect more then one equipment on each pin.
Out A Pin COM / N.O. RELAY1
Set-point 1 pH (or RX ORP) ON-OFF / output relay PWM timed pulses
Out B Pin COM / N.O. RELAY2
Set-point 2 pH (or RX ORP) ON-OFF output relay for Alarm device or Dosing pump
Out C Pin COM / N.O. RELAY3
Set-point 3 EC CONDUCTIVITY ON-OFF / output relay PWM timed pulses
Out D Pin COM / N.O. RELAY4
ALARM ON-OFF output relay for external device related to measuring settings
Pin 1 + / Pin 2 – IN 1
Digital Input Level switch for acid or alkaline chemical tank
Pin 3 + / Pin 4 – IN 2
Digital Input Level switch for chlorine or chlorine reducer chemical tank
Pin 5 + / Pin 6 – IN3 PROX
Proximity Switch input BLACK + / BLUE – wires
Pin 7 + 12Vdc
IN3 PROX
Proximity Switch input 12Vdc BROWN wire
Pin 8 / Pin 9
4/20mA1
pH (or RX ORP) 4-20mA output for dosing pump or another device suitable to mA current
Pin 9 / Pin 10
4/20mA2
EC CONDUCTIVITY 4-20mA proportional output for mA dosing pump or data logger
Pin 11 = S+ RED or WHITE
Pin 12 = +
Conductivity sensor 2 wires
DO NOT CONNECT BRAIDED WIRE
Pin 13 = –
Pin 14 = S– WHITE or RED
Pin 15 = + RED
Temperature probe PT100
Pin 16 = S+ BLUE
DO NOT CONNECT BRAIDED WIRE
Pin 17 = S– GREEN
Pin 18 = – YELLOW
10
KEEP IN MIND: unit with universal voltage 100250Vac (±10%) or 924Vdc. If the actual voltage is constantly at the
limit (lower or higher), or when spikes are much higher than mentioned range, the unit pcb is electronically protected
against Voltage fluctuations; outside the above-mentioned ranges, controller will not work and circuit boards must be
replaced. We RECOMMEND using voltage protections, checking system ground and, when connecting in parallel other units,
using remote contact switch. A plant not built according to correct electrical rules, without a ground system, with frequent ON/OFF
operations, could affect directly the circuit boards. It’s also suggested installing a UPS (Uninterruptible Power Supply) to ensure
power continuity. A discontinuous voltage along with many On/Off operations, could affect the pcb’s integrity and Data loss.
5.0
OPERATING MODES GLOSSARY
ON-OFF mode

Unit is provided with ON-OFF mode which will activate (or deactivate in case of reverse mode ON) output relays Constant /
ON-OFF dosing pumps mode or other ON-OFF equipment.
BENEFITS: it will work with most of ON-OFF equipment, which are also cost effective.
DISAVANTAGES: due to dosing equipment high output performance rate (frequency for dosing pump and peristaltic dispensers
with motor rpm), this will result to a slightly different values between actual measurement in the system and what controller shows.
USING EXTRA ON-OFF RELAY OUTPUT

ON-OFF Relay probably will connect a dosing pump; the free available relays can connect an alarm device (buzzer and light),
programming different values then the ones for dosing pumps.
BENEFITS: increase safety measurements ensuring warning in case parameters are out of control.
ACID / ALKALINE - DIRECT / REVERSE DIRECTION MODE
 Set-points relays Direction mode are set as default as follow:
Set point 1 PH or RX (Orp):
- PH: ACID mode meaning that output is active when measured value is higher than set point, connected dispensing unit will
dose alkaline chemical.
- RX: DIRECT mode meaning that output is active when measured value is lower than set point, connected dispensing unit
will dose chlorine (Oxidant).
Set point 2 PH or RX (Orp):
- PH: ALKALINE mode meaning that output is active when measured value is lower than set point, connected dispensing unit
will dose acid chemical.
- RX: REVERSE mode, output is active when measured value is higher than set point, connected dispensing unit will dose
chlorine Reducing chemical.
Set point 3 EC (Conductivity):
EC: DIRECT mode, output is active when measured value is lower than selected set-point.
EC: REVERSE mode, output is active when measured value is higher than selected set-point.
User can change mode during programming or change measuring parameter or EC range (latter using expert menu setpoint3)
ALARM HIGH / LOW function
 Alarm function allows selecting two points high and low passed which controller will go into alarm.
BENEFITS: increase safety measurements ensuring warning in case parameters are out of control.
HYSTERESIS
 Hysteresis is useful during ON-OFF mode set-point adjustment operations and is used to activate or deactivate output relays
when selected hysteresis is reached. Hysteresis is useful when there are too many quick changes around set point, which
could damage connected equipment. Increasing Hysteresis will allow moving away from set point according to required value.
Example with PH: if selected set point is 7.00 pH and Hysteresis set at 0.05, the two active points are 6.95 pH and 7.05 pH:
within this range, set point is OFF and outputs are blocked, outside this range set point is ON (always in accordance with Acid or
Alkaline mode); RX (mV) and Cl (ppm) parameters work the same way accordingly.
BENEFITS: ensuring good control the systems without stressing connected equipment.
DISAVANTAGES: user must remember that programmed hysteresis is slightly different from required set point.
DELAY
 Delay time blocks relay outputs (max 999 sec. programmable) to ensure that the outputs are active only when the sensors
measurements are stable thus allowing the best results in terms of chemical balance.
PWM mode: Pulses Width Modulation / Timed pulses
 Timed Pulses also known as PWM “pulses with modulation” time/pause allows proportional mode on each ON-OFF set-point
activating corresponding pulses with Start/Stop time cycle variation according to measured value in respect to set-point.
Window Width (example with range 2000 μS): pulses are timed ON and OFF according to the distance from selected set point,
programmable, example: if EC selected set point is 700 μS and window width 100 μS; at measured value 600 μS, PWM mode will
start with Time/Pause pulses and decreasing the active time while reaching set point value.
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. EC set point 700 μS, window width 100 μS; at measured value
600 μS = active time 60 sec / pause time = 0 sec.; at measured value 650 μS EC active time= 30 sec / pause time 30 sec ... and
decreasing active time accordingly while reaching setpoint value. Cycle time depends on many variables such as: distance from
injection point to the system to treat, reaction time required, chemical concentration, etc....
11
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected settings. Times Pulses
Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first. However, we suggest keeping the
default active time shown when programming, that is 5 seconds.
PH and RX (mV) parameters work the same way according to programming settings.
BENEFITS: a proportional function more accurate than ON-OFF mode using simple equipment such as Constant mode dosing
pumps and peristaltic dispensers.
DISAVANTAGES: user must be a professional to select the most accurate settings for excellent results.
ANALOG CURRENT OUTPUTS 4÷20 mA
Controller features 2 analog current signal mA outputs. The signal 4-20Ma follows pH or RX mV and EC selected settings.
Output mA provides two working mode to select according to the system operating requirements:
 AUX is a programmable function combined to the unit pH or RX (Orp) and EC measurements in real time thus driving remote
equipment such as data logger, PLC or Chart recorders or other equipment suitable to process a remote mA signal. At 4 mA
corresponds the minimum pH or RX mV (ORP) and EC (μS or mS) levels, at 20 mA corresponds the max Measured pH or RX mV
(ORP) and EC (μS or mS) levels; connected equipment will work accordingly.
 DOSING SETPOINT: mA output drives dosing pumps or equipment suitable to manage a mA incoming signal. At 4 mA corresponds
the minimum pH or RX mV (ORP) and EC (μS or mS) levels thus connected dosing pump will work at minimum capacity. At 20 mA
corresponds the max measured pH or RX mV (ORP) and EC (μS or mS) levels connected dosing pump will work at max capacity
(according to equipment adjustment settings).
BENEFITS: best results because pulses are extremely accurate in relation to measured levels.
DISAVANTAGES: user needs a specific dosing pump or other equipment suitable to process a remote mA signal.
OVERDOSING TIME
 Overdosing time-out alarm allows to select a period in which set point must be reached. If during this time set point is not
reached, controller will block outputs operations including mA outputs (dosing pump), Alarm is ON shown on display and will
activate a signalling device connected to alarm relay.
BENEFITS: to prevent excess of chemical addition.
START-UP DELAY

Start-up Delay time stops the relay outputs when switching ON the unit thus allowing sensors to polarize ensuring correct
measurements (programmable).
FLOW SENSOR “PROXIMITY SWITCH” FUNCTION

Flow Sensor: in case, no water is running through the sensor cell holder (and eventually into the systems), flow sensor
(proximity switch) will deactivate all outputs ensuring that no extra chemical is added.
TEMPERATURE
 Manual temperature compensation. 0÷100°C. Selecting PT100 (latter with temperature sensor) automatically compensates
temperature / sensor measurements, always giving the exact value against the current temperature. In Manual mode, if user
does not select any temperature value, controller will set 25°C value as default, which can be changed.
12
6.0
PROGRAMMING FUNCTIONS
Output Relays
1-2-3
Set-Points
4÷20mA1-2
Calibration
System
Settings
7.0
3 set-point ON-OFF
Independent setting to activate Constant / ON-OFF mode
dosing pumps, peristaltic or ON-OFF equipment.
Set point
adjusts set-point value (ON-OFF mode).
Hysteresis
It selects a measuring range around set-point value,
blocking output relays (ON-OFF mode)
Acid - Alkaline pH
It selects output dosing relay dosing direction.
Direct - Reverse RX / EC
PWM Proportional mode
with modular pulses
Proportional time/pause pulses output will activate a
Constant / ON-OFF mode dosing pumps, peristaltic or
others ON-OFF equipment.
Delay on set point
It selects a delay time (999 seconds adjustable) before
activating relay output.
Relay 4 Alarm
Alarm min / Alarm Max
Alarm function selects alarm Lowest and Highest level
passed which alarm relay will be ON or OFF.
AUX mA device
driving data logger, PLC, data recorder or equipment suitable to work with mA signal
Dosing setpoint
driving mA dosing pumps or equipment suitable to work with mA signal
Calibration menu for pH or RX electrodes and Conductivity sensor.
Flow sensor
It activates (ON) or deactivates (OFF) flow sensor (proximity switch) input.
Manual temperature
It selects manual temperature compensation. 0÷100°C (Auto-Temp=OFF).
Auto-temperature
Compensation
It compensates the temperature/electrode sensor thus always measuring the exact
value against the current temperature, function available only with PT100 sensor.
INPUTS / OUTPUTS DIAGRAM FUNCTIONS
INPUTS TO...........
OUTPUTS TO ...........
PH electrode
or
RX electrode
Set point 1-2-3
Dosing pumps,
Solenoid valves,or
other ON-OFF
equipment
EC conductivity
sensor
Proximity
switch
Alarm output
Temperature
Sensor PT100
mA ouputs
dosing pumps,
data logger, PLC,
chart recorder or
equipment suitable
to process mA signal
Level probe
for chemical
tanks
13
8.0
INITIAL DISPLAY
NOTES FOR PROGRAMMER: try not to press the keys continuously. First, read the manual before programming or have the
booklet handy so to be sure to perform a correct selection.
IMPORTANT: if keys are not pressed for 60 seconds, controller will display current measurements.
For rapid advancement, keep pressed firmly either one of ◄► keys
When the controller is turned ON there will be displayed at the bottom the latest software
upgrades.
Software is subject to revision without notice.
FWT
MODEL CTRL2
R e v . X .X
Controller will get set for measurements and ready to work.
at this point, there could be some here are displayed some other messages status such as:
S1 S2 S3 L1 L2 ALARM OVERDOSING FLOW *BASIC MENU* *EXPERT MENU*
which could be ON due to actual measurements, just go ahead with programming.
Display shows pH or Redox mV and Conductivity EC measurements according to settings programmed in following paragraphs.
If controller has been already programmed, display shows previously selected set points.
INITIAL DISPLAY shows measurements which are random since no calibrations have yet
been effectuated. If the controller has been already programmed, display will show previously
selected programs.
CONTINUOS MEASUREMENT DISPLAY shows when parameter measurements, function
status and alarm indications.
NOTE: for EC conductivity measurements, display will show μ S values up to 1999
(microSiemens) then automatically will change to mS (milli Siemens) above latter value
When the controller is turned ON for the first time, there will be displayed a list of all the
programming function keys which will not appear in the next switching ON operations.
CAREFULLY READ KEY USAGE THEN PRESS
O K to start
KEYS CONFIGURATION
OK: menu access, start/stop, selection and modifications
 program step selection or selected value increase / decrease
ESC: back to previous step (does not save any modifications
* Press OK to start*
O
K
For rapid advancement keep pressed firmly either one of the ◄► keys
8.1 - SELECTING PROGRAMMING MENU LANGUAGE
CONTROLLER
SETTINGS
Language
English
It allows to select programming menu language.
 BASIC MENU 
8.2 - SELECTING MEASURING PARAMETER
CTRL2 series controller allows to select either PH or RX (ORP) on one both measurements in the same unit. Measuring
parameter can be changed from PH to RX and consequently the display and measurement resolutions will change accordingly.
◄
Measure Param.1
pH
►◄
Measure Param.1
Rx
►
Selecting either one of the two menus,
programming will change accordingly.
IMPORTANT: once selected PH or RX M e a s ur e P a r a m. 1, ENSURE, to connect the proper electrode.
In case, the user wished to change M e as u re P a r a m . 1 , even during operations:
BASIC menu to > S E T T I N G S > E X P E R T > S E L E C T M E N U > S E T P O I N T 1 > M e a s u r e P a r a m .
O
O
O
O
M
from  EXPERT  menu, move to > S E L E C T M E N U > S E T P O I N T 1 > M e a s u r e P a r a m .
O
Press E S C to return to S E L E C T M E N U
O
O
M
U
14
.
.
8.3 - SELECTING CONDUCTIVITY EC PROBE “K” FACTOR
CTRL2 EC STANDARD CONDUCTIVITY RANGES
It is always RECCOMENDED and mandatory to use the correct K probe according to the range in which the controller is working.
K1 2000 µS20.00 mS (20.000 μS): it can measure down to 1000 µS but accuracy will be more approximated.
K5 200 µS 2000 µS
UPON REQUEST other ranges are available only after FWT SYSTEMS Srl approval and with corresponding probe K factor:
> K 0,6 / 0,8 up to 50 mS (50.000 µS)
> K10 20 µS200 µS with appropriate probe.
CTRL2 EC will show μS values up to 1999 (microSiemens) above this value will automatically change to mS (milli Siemens).
IMPORTANT: the above μS ranges are just indicative: for example, a K1 probe can make good measurements below 1000 μ S,
only resolution will be less accurate. However, the same concept doesn’t apply the other way around: a K5 probe will never measure
higher ranges than 2.000 µS.
EC METER SETTINGS
K selections starts from 1.000 and pressing ◄► value can reach up to 20.000 or down to 0,000
K1 select 1.000
K5 select 5.000
Display shows µS but in selected value exceed 1999 µS, it will show 2.00 mS
EC probe K factor
1.000
Controller will adapt Measurement and Display resolution according to the type of probe used as shown in page 14÷15.
IMPORTANT: once selected EC probe K factor, ENSURE, to connect the proper Conductivity sensor.
In case, the user wished to change the EC K RANGE, even during operations:
BASIC menu to > S E T T I N G S >
O
O
EXPERT > SELECT MENU > SET POINT3 > EC probe K factor
O
O
from  EXPERT  menu, move to > S E L E C T M E N U > S E T P O I N T 3 > E C p r o b e K f a c t o r
O
O
Press E S C to return to S E L E C T M E N U
O
r
r
U
8.4 -TEMPERATURE SETTINGS
CONTROLLER
SETTINGS
CONTROLLER
Temp. Probe
Man ual
SETTINGS
Temperature
XX°C
CONTROLLER
SETTINGS
Temp.Probe
Auto
Manual temperature compensation 0÷100°C.
Press ◄► to show the environmental temperature.
Selecting Manual mode, if user does not select any temperature
value, controller will set 25°C value as default, programmable.
Selecting
AUTO
compensation
temperature/electrode
measurements, always giving the exact value against the current
temperature.
AUTO mode works only if using temperature sensor PT100
Press ◄► to show the temperature to calibrate sensor.
8.5 - PROGRAMMING MENU
CTRL2 series allows choosing between:
BASIC programming: simplified mode for not professional operators.
EXPERT programming: complete programming including functions for a more refined control and results.
Once selected the programming menu, Menu and submenus will change accordingly.
To help operator to choose the correct menu here following the main difference between the two menus:
Menu
BASIC
S e t p o i nt 1 - 2 - 3 < S e t p o i n t V a l u e - Do s in g M o d e - M o de O N / O FF o r T i m e d P u ls e s - A l a r m
M I N /M A X ( o n ly S e t p o i n t 1-3 ) > C a l i b r a t e > Se t t i ng s >
S e t p o i nt 1 - 2 - 3 < S e t p o i n t V a l u e - D o s i n g M o de - M o de O N/ O F F o r T im e d Pu l se s - H ys t e r e s i s
Menu
EXPE RT
- D e l a y - M e a su r e P a r a m . o r R a n g e - A l a r m M I N/ M A X ( o n l y Se t p o in t 1- 3) - O ve r do s i n g S t a r t u p D e l a y > 4 - 2 0 m A1 > 4 - 2 0 m A2 > C a l i b r a t e > S e tt i n gs >
Press O K / M E N U display shows  BASIC  mode (default)
O
U
15
9.0
SELECT MENU > BASIC programming menu
These are all the steps included in the SELECT MENU loop visualization with BASIC menu programming:
◄
Select Menu
Setpoin t 1 (pH)*
►
◄
Select Menu
Setpo int 2 (p H)*
*When selecting M e a s u r e P a r a m . 1 RX,
C
O
O
►
S E T P O I N T 3 and C a l i b r a t i o n
C
programming will follow the selected range values
C a l i b r a t i o n reads RX-mV
n
Select Menu
►
Calibr ate M1(pH)*
Select Menu
Set point 3 (EC)*
r
S E T P O I N T 1 , S E T P O I N T 2 and
◄
◄
* Selecting E C p r o b e K f a c t o r ,
M
O
►
◄
Select Menu
►
Calibrate M2 (EC)*
◄
Select Menu
Set tings
►
Press O K / M E N U to confirm selection and to approach next submenu.
O
U
Press E S C to return to continuous M E A S U R E M E N T D I S P L A Y
10.0
A
SETPOINT 1 pH or RX (Orp) > BASIC MENU
10.1 - SET POINT1 PH
PH
Select Menu
Set point 1 (pH)
MENU SETPOINT 1
10.2 - SET POINT1 RX
RX (Orp)
Here following are two programming steps: when selecting
Measure Param.1 as PH measurement, refer to left column;
selecting RX refer to right column.
(pH)
Setpoint Value
7.00 pH
MENU SETPOINT 1
Set point menu will activate output relays for dosing pumps or other
equipment UNTIL selected set-point level is reached.
 BASIC MENU 
MENU SETPOINT 1
(pH)
 BASIC MENU 
(pH)
Working Mode
Alka line
 BASIC MENU 
MENU SETPOINT 1
(Rx)
Setpoint Value
200 mV
 BASIC MENU 
Working Mode
Acid
MENU SETPOINT 1
Select Menu
Setp oint 1 ( Rx)
(pH)
Mode
ON /O FF
 BASIC MENU 
Rx set point 1 is set for Direct
mode operation: output is
active when measured value is
lower than selected set-point,
dosing pump injects chlorine
(Oxidant).
Reverse mode: output is active
when measured value is higher,
dosing pump injects chlorine
reducer.
MENU SETPOINT 1
Unit is provided with ON-OFF mode which will activate or
deactivate in case of reverse mode ON) output relays such as
Constant / ON-OFF mode dosing pumps or other ON-OFF mode
equipment.
MENU SETPOINT 1
pH set point 1 is set for Acid
mode operation: output is
active when measured value is
higher than selected set point,
dosing pump injects acid.
Alkaline mode: output is active
when measured value is lower,
dosing pump injects alkaline.
(Rx)
Working Mode
D ir ect
 BASIC MENU 
MENU SETPOINT 1
(Rx)
Working Mode
Reverse
 BASIC MENU 
(Rx)
Mode
ON /O FF
 BASIC MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “ALARM MIN” (FUNCTION ONLY SET POINT1)
MENU SETPOINT 1
(pH)
Mode
Timed Pulses
 BASIC MENU 
* Timed Pulses known as PWM “pulses with modulation” time /
pause action allowing proportional mode on each ON-OFF set
point according to measured value.
Default activating point at 1.50 pH
Default activating point at 150 mV
16
MENU SETPOINT 1
(Rx)
Mode
Timed Pulses
 BASIC MENU 
For more accurate “Timed Pulses” PWM settings, select “Expert” menu from initial settings
BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT 1
(pH)
Alarm MIN
0.00 pH
FUNCTION ONLY AVAILABLE WITH SETPOINT 1
 BASIC MENU 
MENU SETPOINT 1
MENU SETPOINT 1
Alarm MIN function selects alarm LOWEST level passed which
alarm relay will be ON.
(pH)
Alarm MAX
14.00 pH
Alarm MAX function selects alarm HIGHEST level passed which
alarm relay will be ON.
 BASIC MENU 
 BASIC MENU 
MENU SETPOINT 1
(Rx)
Alarm MAX
1500 mV
 BASIC MENU 
MENU SETPOINT (pH or Rx)
MENU SETPOINT (pH or Rx)
Priming
OFF
Priming
ON
 BASIC MENU 
 BASIC MENU 
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
11.0
(Rx)
Alarm MIN
– 1 500 mV
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
SETPOINT 2 pH or RX (Orp) > BASIC MENU
11.1 - SET POINT2 PH
PH
Select Menu
Set point 2 (pH)
MENU SETPOINT 2
11.2 - SET POINT2 RX
RX (Orp)
Here following are two programming steps: when selecting
Measure Param.1 as PH measurement, refer to left column;
selecting RX refer to right column.
(pH)
Setpoint Value
7.00 pH
MENU SETPOINT 2
Set point menu will activate output relays for dosing pumps or other
equipment UNTIL selected set-point level is reached.
 BASIC MENU 
MENU SETPOINT 2
(pH)
 BASIC MENU 
(pH)
Working Mode
Acid
 BASIC MENU 
MENU SETPOINT 2
(Rx)
Setpoint Value
200 mV
 BASIC MENU 
Working Mode
Alka line
MENU SETPOINT 2
Select Menu
Setp oint 2 ( Rx)
(pH)
Mode
ON /O FF
 BASIC MENU 
Rx set point 2 is set for Reverse
mode operation: output is
active when measured value is
higher than selected set-point,
dosing pump injects chlorine
reducer.
Direct mode: output is active
when measured value is lower,
dosing pump injects chlorine
(Oxidant).
MENU SETPOINT 2
Unit is provided with ON-OFF mode which will activate or
deactivate in case of reverse mode ON) output relays such as
Constant / ON-OFF mode dosing pumps or other ON-OFF mode
equipment.
MENU SETPOINT 2
pH set point 2 is set for Alkaline
mode operation: output is
active when measured value is
lower than selected set point,
dosing pump injects alkaline.
Acid mode: output is active
when measured value is
higher, dosing pump injects
acid.
(Rx)
Working Mode
Reverse
 BASIC MENU 
MENU SETPOINT 2
(Rx)
Working Mode
D ir ect
 BASIC MENU 
(Rx)
Mode
ON /O FF
 BASIC MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “ALARM MIN” (FUNCTION ONLY SET POINT1)
MENU SETPOINT 2
(pH)
Mode
Timed Pulses
 BASIC MENU 
* Timed Pulses known as PWM “pulses with modulation” time /
pause action allowing proportional mode on each ON-OFF set
point according to measured value.
Default activating point at 1.50 pH
Default activating point at 150 mV
17
MENU SETPOINT 2
(Rx)
Mode
Timed Pulses
 BASIC MENU 
For more accurate “Timed Pulses” PWM settings, select “Expert” menu from initial settings
BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT (pH or Rx)
MENU SETPOINT (pH or Rx)
Priming
OFF
Priming
ON
 BASIC MENU 
 BASIC MENU 
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
12.0
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
SETPOINT 3 EC (CONDUCTIVITY > BASIC MENU
Select Menu
S etp oint 3 (EC)
MENU SETPOINT 3
(EC)
Setpoint Value
10 00 µS
 BASIC MENU 
MENU SETPOINT 3
(EC)
Keep in mind that the value displayed is automatically adjusted to the selected conductivity range
cell constant “K” characteristic in previous paragraph 8.3.
Set point will activate output relays for dosing pumps or other equipment once selected set-point
level is reached. Display will show µS values but in case setpoint value exceed 1999 µS, it will
show 2.00 mS (decreasing the value will return to µS reading).
MENU SETPOINT 3
(EC)
Working Mode
D irect
Working Mode
Rev erse
 BASIC MENU 
 BASIC MENU 
MENU SETPOINT 3
Direct mode operation: output is active when measured value is
lower than selected set-point
Reverse mode operation: output is active when measured value is
higher than selected set-point.
(EC)
Mode
ON /O FF
Unit is provided with ON-OFF mode which will activate or deactivate in case of reverse mode ON)
output relays such as Constant / ON-OFF mode dosing pumps or other ON-OFF mode equipment.
 BASIC MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “ALARM MIN” (FUNCTION ONLY SET POINT1)
MENU SETPOINT 3
(EC)
Mode
Timed Pulses
 BASIC MENU 
*Timed Pulses also known as PWM “pulses with modulation” time/pause allows proportional mode
on each ON-OFF set point activating corresponding pulses on output relay according to measured
value and always relating to the previous hysteresis selected settings. Default activating point at
1000 μS (range 0-20.000 μS DEFAULT); 100 μS (range 0-2000 μS); 0,10 μS (range 0-200 μS);
50 mS (range 0-50.000 μS)
For more accurate “Timed Pulses” PWM settings, select “Expert” menu from initial settings
BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT 3
(EC)
MENU SETPOINT 3
Alarm MIN
0 μS*
Alarm MAX
20.00 mS*
 BASIC MENU 
 BASIC MENU 
(EC)
FUNCTION ONLY AVAILABLE WITH SETPOINT 3
Alarm MIN function selects alarm LOWEST level passed which
alarm relay will be ON.
Alarm MAX function selects alarm HIGHEST level passed which
alarm relay will be ON.
* Selecting E C pr o be K r a n ge , Alarm Max will show the max value of the selected range, example: selecting range K1
range 20.00 mS, this will be Max alarm value, selecting K5 at the beginning of programming shows 2000 μS
MENU SETPOINT 3
(EC)
MENU SETPOINT 3
Priming
OFF
Priming
ON
 BASIC MENU 
 BASIC MENU 
(EC)
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
E S C to continuous M E A S U R E M E N T D I S P L A Y
18
A
13.0
SENSORS CALIBRATION > BASIC MENU
◄
Select Menu
►
Ca librat e M1( pH)*
Select Menu
►
CalibrateM2(EC) * *
◄
*Calibration operation will follow the measuring parameter selected in paragraph 8.2 M e a s u r e P a r a m . 1
In case RX has been selected, display will show mV calibration steps.
M
**Calibration operation will follow conductivity settings selected in paragraph 8.3 E C p r o b e K f a c t o r
E
1
r
Press O K / M E N U to confirm selection and to approach next submenu.
O
U
According to the selected measure parameter, Calibration menu will show the electrode to calibrate.
We recommend using fresh sample solutions or new electrode and sensors or at least in good conditions.
For pH electrode cable length, we recommend max 9 m: for longer distances contact FWT or authorised Dealer.
Displayed mV value shows sensor efficency (according to the sensor manufacturer specifications)
13.1 - CALIBRATING PH ELECTRODE > BASIC MENU
MEAS.1 CALIBRATE
(pH)
Zero Calibration
6.22 pH
46.4 mV
MEAS.1 CALIBRATE
(pH)
Slope Calibration
9.50 pH
46.4 mV
* When starting calibration display shows random values
Dip pH electrode into 7.00 pH buffer solution for ZERO calibration, wait 2/3 minutes.
press ◄► ensuring display shows value 7.00 pH, wait 2/3 minutes
Rinse electrode with water (possible deionised) and dry it by tapping with clean cloth or paper
napkins.
Dip pH electrode into 4 or 9 pH buffer solution for “Slope” calibration, wait 2/3 min.
Press ◄►ensuring it shows the buffer solution value, 4 or 9 pH, wait 2/3 minutes
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
Being pH measurement fundamental for the whole chemical-physical balance, we recommend the pH electrode
periodical calibration.
13.2 - CALIBRATING RX (ORP) ELECTRODE > BASIC MENU
MEAS.1 CALIBRATE
(Rx)
Zero Calibration
6.22 pH
46.4 mV
MEAS.1 CALIBRATE
(Rx)
Slope Calibration
450 mV
420,1 mV
* When starting calibration display shows random values
Short circuit BNC connector using a metal wire (eg: screwdriver, copper
wire, etc), connect pin core with BNC external element.
Rinse electrode with water (possible deionised) and dry it by tapping with
clean cloth or paper napkins.
* When starting calibration display shows random values
Dip Rx electrode into Redox buffer solution for “Slope” calibration, wait 2/3 minutes.
Press ◄► ensuring display shows value mV solution, wait 2/3 min.
The mV value at the bottom of the display shows the mV electrode signal thus
indicating the electrode efficiency.
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
The mV value at the bottom of the display shows the electrode signal thus indicating the electrode efficiency: for the
electrode signal values, refer to electrode instructions and technical characteristics, however the mV value must match
the one of the buffer solution used for calibration, allowance  20mV.
13.3 - CALIBRATING EC (CONDUCTIVITY) SENSOR > BASIC MENU
CAREFULLY READ MESSAGE THEN PRESS
OK to start
O
K
For rapid advancement keep pressed firmly either one of the ◄
19
► keys
Select Menu
Calibration
◄
►
Press O K / M E N U to confirm selection and to approach next submenu
O
U
CTRL2 EC STANDARD CONDUCTIVITY RANGES
It is always RECCOMENDED and mandatory to use the correct K probe according to the range in which the controller is working.
- K1 2000 µS20.00 mS (20.000 μS): it can measure down to 2000 µS but accuracy will be more approximated.
- K5 200 µS 2000 µS: it can measure down to 200 µS but accuracy will be more approximated.
UPON REQUEST other ranges are available only after FWT SYSTEMS Srl approval and with corresponding probe K factor:
> K 0,6 / 0,8 up to 50 mS (50.000 µS): using FWT probe with graphite electrodes or another brand equivalent type.
> K10 20 µS200 µS with appropriate probe.
IMPORTANT NOTES:
- if NO temperature sensor is used, move to E x p e r t M e n u S e t t i n gs > T e m p e r a t u re > M a n ua l to change it to required
temperature value;
- when calibrate the sensor ensure that the probe electrodes do not touch any surface except the solution;
- ensure that the sensor is firmly positioned without movements into the solution container;
- wait the necessary time until calibration measurement is stabilised (about 10 min). During calibration, measurements values
will always tend to have a very small variation but this will not prevent from continuing unit operation.
A message will appear before calibration reminding:
We recommend making a sample solution which matches the required EC value in the system (normally the set-point
value); using a good portable EC meter, ensure conductivity levels correspond to the EC requirements. Use a
Conductivity sensor with cell constant according to the selected K factor range (paragraph 9.2) with max cable length of
4 m. After calibration wait 5/10 minutes for measure to stabilise.
* When starting calibration display shows random values
MEASURE CALIBRATE
Dip EC probe into buffer solution value, wait until measure stabilises. To modify the value
Calibrate
press O K , then press ◄► until it shows the sample solution value, press O K to confirm.
Dip EC probe into sample solution previously prepared, wait until measure stabilises which is
1 µ S*
within the sensor K range wait until measure stabilises.
0 Μ
To modify the value press O K key, then press ◄► until it shows the buffer
solution value, press O K to confirm.
K
K
O
U
K
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
* It will show the value according to previously selected constant cell K range.
Controller will adapt Measurement and Display resolution according to the type of probe used as shown in page 14÷15.
IMPORTANT: once selected EC probe K factor, ENSURE, to connect the proper Conductivity sensor.
In case, the user wished to change the EC K RANGE, even during operations:
BASIC menu to > S E T T I N G S >
O
O
EXPERT > SELECT MENU > SET POINT3 > EC probe K factor
O
O
from  EXPERT  menu, move to > S E L E C T M E N U > S E T P O I N T 3 > E C p r o b e K f a c t o r
O
O
Press E S C to return to S E L E C T M E N U
O
14.0
r
r
U
SETTINGS > BASIC MENU
Select Menu
Set tings
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
Programming
BASIC
Programming
EXPE RT
 BASIC MENU 
 BASIC MENU 
BASIC programming: simplified mode for not professional
operators
EXPERT programming: complete programming including functions
for a more refined control and results.
After selecting, e.g. choosing EXPERT, at first display will still show Basic but as soon as moving to other
steps it will change to Expert, and vice versa.
20
CONTROLLER
SETTINGS
Backlight Low lev.
30%
It adjusts the display save energy mode backlight level; touching any button will restore full
100% display operative brightness.
 BASIC MENU 
CONTROLLER
SETTINGS
Language
En glish
It allows to select the programming menu language. Once the Language is selected, the
programming menu adjusts accordingly.
 BASIC MENU 
CONTROLLER
SETTINGS
FACTORY SETTINGS: it restores factory default settings. To be used ONLY when parameters or
measurements are not responding correctly or when user wants to ensure to re-program from
zero. Not to abuse, continuous restoring can affect controller efficiency.
Factory Settings
NO
 BASIC MENU 
CONTROLLER
SETTINGS
CONTROLLER
Factory Settings
YES
SETTINGS
CONTROLLER
CONFIRM ?
NO
◄
 BASIC MENU 
SETTINGS
CONFIRM ?
YES
► ◄
 BASIC MENU 
►
 BASIC MENU 
Once confirmed YES, display will be OFF for 1 second than will return to continuous M E A S U R E M E N T D I S P L A Y
A
15.0 SELECT MENU > EXPERT programming menu
These are all the steps included in the SELECT MENU loop visualization with BASIC menu programming:
◄
Select Menu
Setpo in t 1 (pH)*
►
◄
Select Menu
S etp oint 2 (p H)*
r
►
◄
C
Select Menu
4-2 0mA2 (EC )
►
◄
r
O
P O I N T 3 and C a l i b r a t i o n programming will
C
follow the selected range values
Select Menu
Settin gs
►
Press O K / M E N U to confirm selection and to approach next submenu.
O
Select Menu
►
Calibr ate M1(pH)*
► ◄
* Selecting E C p r o b e K f a c t o r , S E T
reads Se t p o i nt 1 a n d S et p o i n t 2 RX
Select Menu
Calibrate M2(E C)
n
follow the selected range values
* When selecting M e a s ur e P a ra m . 1 RX
◄
O
P O I N T 3 and C a l i b r a t i o n programming will
reads S et p o in t 1 an d S e t p o in t 2 RX
Select Menu
4-2 0mA1 (p H)*
►
* Selecting E C p r o b e K f a c t o r , S E T
* When selecting M ea s u r e P a ra m . 1 RX
◄
Select Menu
Setpoin t 3 (Cl)
► ◄
U
Press E S C to return to continuous M E A S U R E M E N T D I S P L A Y
21
A
n
16.0
SETPOINT 1 pH or RX (Orp) > EXPERT MENU
16.1 - SET POINT1 PH
16.2 - SET POINT1 RX
Select Menu
Set point 1 (pH)
MENU SETPOINT 1
Select Menu
Setp oint 1 (Rx)
Here following are two programming steps: when selecting
Measure Param.1 as PH measurement, refer to left column;
selecting RX refer to right column.
(pH)
Set point menu will
MENU SETPOINT 1
Setpoint Value
7.00 pH
Set point menu will activate output relays for dosing pumps or other
equipment UNTIL selected set-point level is reached.
 EXPERT MENU 
MENU SETPOINT 1
 EXPERT MENU 
(pH)
Working Mode
Acid
pH set point 1 is set for Acid
mode operation: output is
active when measured value is
higher than selected set point,
dosing pump injects acid.
Alkaline mode: output is active
when measured value is lower,
dosing pump injects alkaline.
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Working Mode
Alka line
 EXPERT MENU 
MENU SETPOINT 1
(Rx)
Setpoint Value
200 mV
(pH)
Mode
ON /O FF
 EXPERT MENU 
Rx set point 1 is set for Direct
mode operation: output is
active when measured value is
lower than selected set-point,
dosing pump injects chlorine
(Oxidant).
Reverse mode: output is active
when measured value is higher,
dosing pump injects chlorine
reducer.
Unit is provided with ON-OFF mode which will activate or
deactivate in case of reverse mode ON) output relays such as
Constant / ON-OFF mode dosing pumps or other ON-OFF mode
equipment.
MENU SETPOINT 1
(Rx)
Working Mode
D ir ect
 EXPERT MENU 
MENU SETPOINT 1
(Rx)
Working Mode
Reverse
 EXPERT MENU 
MENU SETPOINT 1
(Rx)
Mode
ON/OFF
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “ALARM MIN” (FUNCTION ONLY SET POINT1)
MENU SETPOINT 1
(pH)
Mode
Timed Pulses
 EXPERT MENU 
* Timed Pulses known as PWM “pulses with modulation” time /
pause action allowing proportional mode on each ON-OFF set
point according to measured value.
Default activating point at 1.50 pH
Default activating point at 150 mV
MENU SETPOINT 1
(Rx)
Mode
Timed Pulses
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “HYSTERESIS”
SELECTING MODE “TIMED PULSES” WILL REQUIRE NEXT PARAMETERS SETTINGS
PH TIMED PULSES PROGRAMMING
MENU SETPOINT 1
(pH)
Window Width
1.50 pH
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Cycle Time
60 sec
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Active Time MIN
5 sec
 EXPERT MENU 
Window Width: pulses are timed ON and OFF according to the distance from selected set-point,
default 1.50 pH (programmable), e.g.: if selected set point is 7.00 pH and window width 1.50 pH; at
measured value 9.00 pH, PWM mode starts after reaching 8.50 pH with Time/Pause pulses and
decreasing the active time while reaching set point value.
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. set point 7.00 pH and window width
1.50 pH; at measured value 8.50 pH = active time 60 sec / pause time = 0 sec.; at measured value 7.75
pH active time= 30 sec / pause time 30 sec …. and decreasing active time accordingly while reaching
setpoint value. Cycle time depends on many variables such as: distance from injection point to the
system to treat, reaction time required, chemical concentration, etc...
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected
settings. Times Pulses Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first. However,
we suggest keeping the default active time shown when programming, that is 5 seconds.
22
RX TIMED PULSES PROGRAMMING
Window Width: pulses are timed ON and OFF according to the distance from selected set-point,
default 150 mV (programmable), e.g.: if selected set point is 750 mV and window width 150 mV; and
measured value 500 mV, PWM mode starts after reaching 550 mV with Time/Pause pulses and
decreasing the active time while reaching set point value.
MENU SETPOINT 1
(Rx)
Window Width
150 mV
 EXPERT MENU 
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. set point 700 mV and window width
150 mV; at measured value 550 mV = active time 60 sec / pause time = 0 sec.; at measured value 625
mV active time= 30 sec / pause time 30 sec..... and decreasing active time accordingly while reaching
setpoint value. Cycle time depends on many variables such as: distance from injection point to the
system to treat, reaction time required, chemical concentration, etc...
MENU SETPOINT 1
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected
settings. Times Pulses Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first.
However, we suggest keeping active time shown when programming, that is 5 seconds.
MENU SETPOINT 1
(Rx)
Window Width
150 mV
 EXPERT MENU 
(Rx)
Window Width
150 mV
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEPS ARE AS FOLLOW ……
MENU SETPOINT 1
(pH)
Hysteresis
0.05 pH
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Set point Delay
5 sec
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Measure Param.
pH
 EXPERT MENU 
NOT AVAILABLE WITH TIMED PULSES MODE
Hysteresis is used to activate or deactivate output relays when
selected value is reached. It is useful when there are too many
and/or quick changes, which could damage connected equipment.
Increasing Hysteresis will allow to move away from set point value.
MENU SETPOINT 1
NOT AVAILABLE WITH TIMED PULSES MODE
Delay time blocks relay outputs to ensure that the outputs are
active only when the sensors measurements are stable thus
allowing the best results in terms of chemical balance.
MENU SETPOINT 1
Measuring parameter can be changed from PH to RX and
consequently the display and measurement resolutions change
accordingly.
(Rx)
Hysteresis
10 mV
 EXPERT MENU 
(Rx)
Set point Delay
5 sec
 EXPERT MENU 
MENU SETPOINT 1
(Rx)
Measure Param.
Rx
 EXPERT MENU 
* BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT 1
(pH)
Alarm MIN
0.00 pH
FUNCTION ONLY AVAILABLE WITH SETPOINT 1
 EXPERT MENU 
MENU SETPOINT 1
MENU SETPOINT 1
(pH)
Alarm MAX
14.00 pH
Alarm MIN function selects alarm LOWEST level passed which
alarm relay will be ON.
Alarm MAX function selects alarm HIGHEST level passed which
alarm relay will be ON.
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Overdosing
0 0.00 h:m
 EXPERT MENU 
MENU SETPOINT 1
(pH)
Startup Delay
0 0.00 h:m
 EXPERT MENU 
(Rx)
Alarm MIN
– 1500 mV
 EXPERT MENU 
MENU SETPOINT 1
(Rx)
Alarm MAX
1500 mV
 EXPERT MENU 
Over dosing time-out alarm selects a period for reaching set-point.
If set point is not reached within time, controller will block outputs
operations including mA outputs. Alarm is ON shown on display
and will activate relay Alarm activating an alarm device.
MENU SETPOINT 1
FUNCTION ONLY AVAILABLE WITH SETPOINT 1
MENU SETPOINT 1
Start-up Delay time “blocks” the relay outputs when switching ON
the unit thus allowing sensors to polarize ensuring correct
measurements.
23
(Rx)
Overdosing
00.0 0 h:m
 EXPERT MENU 
Startup Delay
00.0 0 h:m
 EXPERT MENU 
(Rx)
MENU SETPOINT (pH or Rx)
MENU SETPOINT (pH or Rx)
Priming
OFF
Priming
ON
 EXPERT MENU 
 EXPERT MENU 
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
17.0
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
SETPOINT 2 pH or RX (Orp) > EXPERT MENU
17.1 - SET POINT2 PH
Select Menu
Set point 2 (pH)
MENU SETPOINT 2
17.2 - SET POINT2 RX
(pH)
Setpoint Value
7.00 pH
Select Menu
Setp oint 2 ( Rx)
Here following are two programming steps: when selecting
Measure Param.1 as PH measurement, refer to left column;
selecting RX refer to right column.
Set point menu will
MENU SETPOINT 2
Setpoint Value
200 mV
Set point menu will activate output relays for dosing pumps or other
equipment UNTIL selected set-point level is reached.
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Working Mode
Alka line
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Working Mode
Acid
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Mode
ON /O FF
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Mode
Timed Pulses
 EXPERT MENU 
(Rx)
 EXPERT MENU 
pH set point 2 is set for Alkaline
mode operation: output is
active when measured value is
lower than selected set point,
dosing pump injects alkaline.
Acid mode: output is active
when measured value is
higher, dosing pump injects
acid.
Rx set point 2 is set for Reverse
mode operation: output is
active when measured value is
higher than selected set-point,
dosing pump injects chlorine
reducer. Direct mode: output
is active when measured value
is lower, dosing pump injects
chlorine (Oxidant).
Unit is provided with ON-OFF mode which will activate or
deactivate in case of reverse mode ON) output relays such as
Constant / ON-OFF mode dosing pumps or other ON-OFF mode
equipment.
* Timed Pulses known as PWM “pulses with modulation” time /
pause action allowing proportional mode on each ON-OFF set
point according to measured value.
Default activating point at 1.50 pH
Default activating point at 150 mV
MENU SETPOINT 2
(Rx)
Working Mode
Reverse
 EXPERT MENU 
MENU SETPOINT 2
(Rx)
Working Mode
D ir ect
 EXPERT MENU 
MENU SETPOINT 2
(Rx)
Mode
ON /O FF
 EXPERT MENU 
MENU SETPOINT 2
(Rx)
Mode
Timed Pulses
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “HYSTERESIS”
SELECTING MODE “TIMED PULSES” WILL REQUIRE NEXT PARAMETERS SETTINGS
PH TIMED PULSES PROGRAMMING
MENU SETPOINT 2
(pH)
Window Width
1.50 pH
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Cycle Time
60 sec
 EXPERT MENU 
Window Width: pulses are timed ON and OFF according to the distance from selected set-point,
default 1.50 pH (programmable), e.g.: if selected set point is 7.00 pH and window width 1.50 pH; at
measured value 9.00 pH, PWM mode starts after reaching 8.50 pH with Time/Pause pulses and
decreasing the active time while reaching set point value.
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. set point 7,00 pH and window width
1.50 pH; at measured value 8.50 pH = active time 60 sec / pause time = 0 sec.; at measured value 7.75
pH active time= 30 sec / pause time 30 sec …. and decreasing active time accordingly while reaching
setpoint value. Cycle time depends on many variables such as: distance from injection point to the
system to treat, reaction time required, chemical concentration, etc...
24
MENU SETPOINT 2
(pH)
Active Time MIN
5 sec
 EXPERT MENU 
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected
settings. Times Pulses Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first. However,
we suggest keeping the default active time shown when programming, that is 5 seconds.
RX TIMED PULSES PROGRAMMING
Window Width: pulses are timed ON and OFF according to the distance from selected set-point,
default 150 mV (programmable), e.g.: if selected set point is 750 mV and window width 150 mV; and
measured value 500 mV, PWM mode starts after reaching 550 mV with Time/Pause pulses and
decreasing the active time while reaching set point value.
MENU SETPOINT 2
(Rx)
Window Width
150 mV
 EXPERT MENU 
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. set point 700 mV and window width
150 mV; at measured value 550 mV = active time 60 sec / pause time = 0 sec.; at measured value 625
mV active time= 30 sec / pause time 30 sec..... and decreasing active time accordingly while reaching
setpoint value. Cycle time depends on many variables such as: distance from injection point to the
system to treat, reaction time required, chemical concentration, etc...
MENU SETPOINT 2
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected
settings. Times Pulses Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first.
However, we suggest keeping active time shown when programming, that is 5 seconds.
MENU SETPOINT 2
(Rx)
Window Width
150 mV
 EXPERT MENU 
(Rx)
Window Width
150 mV
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEPS ARE AS FOLLOW ……
MENU SETPOINT 2
(pH)
Hysteresis
0.05 pH
 EXPERT MENU 
MENU SETPOINT 2
(pH)
Set point Delay
5 sec
 EXPERT MENU 
NOT AVAILABLE WITH TIMED PULSES MODE
Hysteresis is used to activate or deactivate output relays when
selected value is reached. It is useful when there are too many
and/or quick changes, which could damage connected equipment.
Increasing Hysteresis will allow to move away from set point value.
MENU SETPOINT 2
NOT AVAILABLE WITH TIMED PULSES MODE
Delay time blocks relay outputs to ensure that the outputs are
active only when the sensors measurements are stable thus
allowing the best results in terms of chemical balance.
MENU SETPOINT 2
(Rx)
Hysteresis
10 mV
 EXPERT MENU 
(Rx)
Set point Delay
5 sec
 EXPERT MENU 
* BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT 2
(pH)
Overdosing
0 0.00 h:m
 EXPERT MENU 
Over dosing time-out alarm selects a period for reaching set-point.
If set point is not reached within time, controller will block outputs
operations including mA outputs. Alarm is ON shown on display
and will activate relay4 activating an alarm device.
MENU SETPOINT (pH or Rx)
MENU SETPOINT (pH or Rx)
Priming
OFF
Priming
ON
 EXPERT MENU 
 EXPERT MENU 
MENU SETPOINT 2
(Rx)
Overdosing
00.0 0 h:m
 EXPERT MENU 
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
E S C to continuous M E A S U R E M E N T D I S P L A Y
25
A
18.0
SETPOINT 3 EC (CONDUCTIVITY) > EXPERT MENU
Select Menu
Set point 3 (EC)
MENU SETPOINT 3
Keep in mind that the value displayed is automatically adjusted to the selected conductivity range
cell constant “K” characteristic in previous paragraph 8.3.
(EC)
Setpoint Value
1000 µS
 EXPERT MENU 
MENU SETPOINT 3
(EC)
Set point will activate output relays for dosing pumps or other equipment once selected set-point
level is reached. Display will show µS values but in case setpoint value exceed 1999 µS, it will show
2.00 mS (decreasing the value will return to µS reading). Selecting K5 (5.000) range setpoint value
100 µS.
MENU SETPOINT 3
Working Mode
D irect
Working Mode
Rev erse
 EXPERT MENU 
 EXPERT MENU 
MENU SETPOINT 3
(EC)
Mode
O N/O FF
 EXPERT MENU 
(EC)
Direct mode operation: output is active when measured value is
lower than selected set-point
Reverse mode operation: output is active when measured value
is higher than selected set-point.
Unit is provided with ON-OFF mode which will activate or deactivate in case of reverse mode ON)
output relays such as Constant / ON-OFF mode dosing pumps or other ON-OFF mode
equipment.
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “ALARM MIN” (FUNCTION ONLY SET POINT1)
MENU SETPOINT 3
(EC)
Mode
Timed Pulses
 EXPERT MENU 
*Timed Pulses also known as PWM “pulses with modulation” time/pause allows proportional
mode on each ON-OFF set point activating corresponding pulses on output relay according to
measured value and always relating to the previous hysteresis selected settings. Default
activating point at 1000 μS (range 0-20.000 μS DEFAULT); 100 μS (range 0-2000 μS); 0,10 μS
(range 0-200 μS); 50 mS (range 0-50.000 μS)
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP  “HYSTERESIS”
SELECTING MODE “TIMED PULSES” WILL REQUIRE NEXT PARAMETERS SETTINGS
EC CONDUCTIVITY TIMED PULSES PROGRAMMING
MENU SETPOINT 3
(EC)
Window Width
100 0 μS
 EXPERT MENU 
MENU SETPOINT 3
(EC)
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. EC set point 700 μS, window width
100 μS; at measured value 600 μS = active time 60 sec / pause time = 0 sec.; at measured value 650
μS EC active time= 30 sec / pause time 30 sec ... and decreasing active time accordingly while reaching
setpoint value. Cycle time depends on many variables such as: distance from injection point to the
system to treat, reaction time required, chemical concentration, etc....
(EC)
Active Time MIN programmable: it sets the minimum time in which PWM is active; it overrules selected
settings. Times Pulses Function follows the following formula:
Active Time MIN = [(measured value – set point) / window width] * cycle time.
If the result of the formula is < the selected Active Time Min, the latter with overrule the first. However,
we suggest keeping the default active time shown when programming, that is 5 seconds.
Cycle Time
60 sec
 EXPERT MENU 
MENU SETPOINT 3
Window Width (example with range 2000 μS): pulses are timed ON and OFF according to the distance
from selected set point, programmable, example: if EC selected set point is 700 μS and window width
100 μS; at measured value is 600 μS, PWM mode will start with Time/Pause pulses and decreasing the
active time while reaching set point value.
Active Time MIN
5 sec
 EXPERT MENU 
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEPS ARE AS FOLLOW ……
MENU SETPOINT 3
Hysteresis
200 μS*
 EXPERT MENU 
(EC)
NOT AVAILABLE WITH TIMED PULSES MODE
Hysteresis is used to activate or deactivate output relays when selected value is reached. It is
useful when there are too many and/or quick changes, which could damage connected equipment.
Increasing Hysteresis will allow to move away from set point value. *Value shown according to
selected K range.
26
MENU SETPOINT 3
(EC)
NOT AVAILABLE WITH TIMED PULSES MODE
Delay time blocks relay outputs to ensure that the outputs are active only when the sensors
measurements are stable thus allowing the best results in terms of chemical balance.
Set point Delay
5 sec
 EXPERT MENU 
* BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
MENU SETPOINT 3
(EC)
K selections starts from 1.000 and pressing ◄► value can reach up to 20.000 or down to 0,000
K1 select 1.000 / K5 select 5.000
Display shows µS but in selected value exceed 1999 µS, it will show 2.00 mS
Controller will adapt Measurement and Display resolution accordingly
EC probe K factor
1.000
 EXPERT MENU 
MENU SETPOINT 3
EC alfa factor is the correction factor for conductivity measurement in function of temperature:
EVERY CONDUCTIVITY SENSOR IS TEMPERATURE-DEPENDENT. Conductivity varies
linearly according to the temperature of the solution. This coefficient normalizes the measurement
of the conductivity at the reference temperature of 25° C. For aqueous solutions, this coefficient is
normally 1.9%-2% per °C. Select 0 if you do not want to normalize the reading. Alfa factor ensures
best measurement results and Accuracy.
(EC)
Temp. correction
0 .0 %/°C
 EXPERT MENU 
EVERY CONDUCTIVITY SENSOR IS TEMPERATURE DEPENDENT. Conductivity varies linearly according to the temperature
of the solution. Normally the best measurements are obtained by automatic temperature compensation using PT100 temperature
sensor. Whenever operator DOES NOT have the temperature sensor, we strongly recommend setting use MANUAL temperature
programming step. CTRL2 series allows to choose between:
- MANUAL selecting the buffer solution and/or environmental current temperature (default set at 25°C)
- PT100 allowing automatic temperature compensation connecting a PT100 temperature probe.
MENU SETPOINT 3
MENU SETPOINT 3
(EC)
Alarm MIN
0 μS*
Alarm MAX
20.00 mS*
 EXPERT MENU 
 EXPERT MENU 
(EC)
FUNCTION ONLY AVAILABLE WITH SETPOINT 3
Alarm MIN function selects alarm LOWEST level passed which
alarm relay will be ON.
Alarm MAX function selects alarm HIGHEST level passed which
alarm relay will be ON.
* Selecting E C pr o be K r a n ge , Alarm Max will show the max value of the selected range, example: selecting range K1
range 20.00 mS, this will be Max alarm value, selecting K5 at the beginning of programming shows 2000 μS
MENU SETPOINT 3
(EC)
Over dosing time-out alarm selects a period for reaching set-point. If set point is not reached within
time, controller will block outputs operations including mA outputs (peristaltic). Alarm is ON shown
on display and will activate relay4 activating an alarm device.
Overdosing
0 0.00 h:m
 EXPERT MENU 
MENU SETPOINT 3
(EC)
FUNCTION ONLY AVAILABLE WITH SETPOINT 3
Startup Delay
0 0.00 h:m
Start-up Delay time “blocks” the relay outputs when switching ON the unit thus allowing sensors to
polarize ensuring correct measurements.
 EXPERT MENU 
MENU SETPOINT 3
(EC)
MENU SETPOINT 3
Priming
OFF
Priming
ON
 EXPERT MENU 
 EXPERT MENU 
(EC)
ONLY WHEN USING DOSING PUMPS
Priming function “blocks” the set point value to allow the
dosing pumps to be primed, outputs will not be active.
Select ON, do not press OK or ESC until dosing pump is
primed, then confirm OK, display will show OFF
Press E S C returns to S E L E C T M E N U or Press E S C
19.0
E S C to continuous M E A S U R E M E N T D I S P L A Y
4-20mA ANALOG CURRENT OUTPUTS FUNCTION SELECTION > EXPERT MENU
◄
Select Menu
4-20mA1 (PH)*
►◄
Select Menu
4-20mA2 (EC)* *
►
*mA operations will follow the measuring parameter selected in paragraph 8.2 M e a s u r e P a r a m . 1
M
27
1
A
In case RX has been selected, display will show mV calibration steps.
**Calibration operation will follow conductivty settings selected in paragraph 8.3 E C p r o b e K f a c t o r
E
r
Press O K / M E N U to enter mA mode
CTRL2 series mA allows choosing between two functions:
O
U
4-20mA
◄
SETTINGS
mA Output Mode
mA dev ice
4-20mA
► ◄
 EXPERT MENU 
-
SETTINGS
mA Output Mode
Dosin g Set point
►
 EXPERT MENU 
AUX driving data logger or data recorder or other equipment suitable to work with mA signal.
DOSING SETPOINT: driving dosing pumps suitable to work with mA signal.
19.1 - 4-20mA1 pH > AUX FUNCTION
19.2 - 4-20mA1 RX > AUX FUNCTION
CTRL2 analog output 4-20mA1 follows the option selected MEASURE PARAMETER1 pH or RX (ORP)
mA1 PH
mA1 RX (Orp)
Select Menu
4-20mA1* (pH)
4-20mA1 SETTINGS
(pH)
mA Output Mode
mA dev ice
 EXPERT MENU 
4-20mA1 SETTINGS
*Programming according selected MEASURE PARAMETER1
Valid for: 4-20mA1 pH / 4-20mA1 RX (ORP)
Proportional analog 4-20mA outputs are combined to the unit
measurements in real time of either pH or RX thus driving remote
equipment such as data logger, PLC or Chart recorders or other
equipment suitable to process a remote mA signal.
(pH)
4-20mA1 SETTINGS
(pH)
4-20mA1 SETTINGS
(Rx)
mA Output Mode
mA dev ice
 EXPERT MENU 
4-20mA1 SETTINGS
Measure @4mA
0.00 pH
 EXPERT MENU 
Select Menu
4 -20mA1* (R x)
(Rx)
Measure @4mA
0 mV
Select the value corresponding to 4 and 20 mA points according
to Setpoint 1 settings.
 EXPERT MENU 
4-20mA1 SETTINGS
(Rx)
Measure @20mA
14.00 pH
Measure @20mA
100 0 mV
 EXPERT MENU 
 EXPERT MENU 
Press E S C returns to S E L E C T M E N U or Press E S C
E S C to continuous M E A S U R E M E N T D I S P L A Y
19.3 - 4-20mA1 pH > DOSING SETPOINT
A
19.4 - 4-20mA1 RX > DOSING SETPOINT
CTRL2 analog output 4-20mA1 follows the option selected MEASURE PARAMETER1 pH or RX (ORP)
*mA1 PH
*mA1 RX (Orp)
Select Menu
4-20mA1 (pH)
4-20mA1 SETTINGS
(pH)
mA Output Mode
D osing Setpo int
 EXPERT MENU 
*Programming according selected MEASURE PARAMETER1
Valid for: 4-20mA1 pH / 4-20mA1 RX (ORP)
Proportional analog 4-20mA output Dosing Setpoint follows
selected the set point driving a dosing pump suitable to process a
remote mA current signal.
28
Select Menu
4 -20mA1 (Rx)
Set point menu will
4-20mA1 SETTINGS
(Rx)
mA Output Mode
D osing Setpoint
 EXPERT MENU 
4-20mA1 SETTINGS
(pH)
Setpoint Value
7.00 pH
4-20mA1 SETTINGS
Select Set point value to drive dosing pump or other equipment
suitable to process mA signal.
 EXPERT MENU 
4-20mA1 SETTINGS
 EXPERT MENU 
4-20mA1 SETTINGS
 EXPERT MENU 
(pH)
Working Mode
Acid
(pH)
Working Mode
Alka line
pH mode is set for Acid mode
operation: output is active when
measured value is higher than
selected set point, dosing pump
injects acid. Alkaline mode:
output is active when measured
value is lower, dosing pump
injects alkaline.
 EXPERT MENU 
4-20mA1 SETTINGS
(pH)
Window Width
1.50 pH
 EXPERT MENU 
4-20mA1 SETTINGS
(pH)
Overdosing
00.0 0 h:m
 EXPERT MENU 
(Rx)
Setpoint Value
2 00 mV
Rx mode is set for Direct mode
operation: output is active when
measured value is lower than
selected set-point, dosing pump
injects chlorine (Oxidant).
Reverse mode: output is active
when measured value is higher,
dosing pump injects chlorine
reducer.
Window Width: sets the distance from set point at which point 420mA mode will start: 4mA = 0 dosing pump pulse, 20mA = max
dosing pump pulses frequency. Window width depends on many
variables: distance injection point, reaction time, chemical
concentration %....
4-20mA1 SETTINGS
(Rx)
Working Mode
Dir ect
 EXPERT MENU 
4-20mA1 SETTINGS
(Rx)
Working Mode
Reverse
 EXPERT MENU 
4-20mA1 SETTINGS
(Rx)
Window Width
1.50 pH
 EXPERT MENU 
Overdosing time-out alarm selects a period for reaching set-point. If 4-20mA1 SETTINGS (Rx)
set point is not reached within time, controller will block outputs
Overdosing
operations including mA outputs. Alarm is ON shown on display and
00.00 h:m
will activate relay Alarm activating an alarm device.
 EXPERT MENU 
Press E S C returns to S E L E C T M E N U or Press E S C
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
19.3 - 4-20mA2 EC CONDUCTIVITY > AUX FUNCTION REMOTE mA DEVICE
CTRL2 analog output 4-20mA2 follows the option previously selected settings for cell constant E C p r o b e K f a c t o r .
Select Menu
4 -20mA2 (EC)
4-20mA2 SETTINGS
(EC)
CTRL2 series proportional analog 4-20mA2 follows the option previously selected among the
conductivity K factor measuring range.
4-20mA2 SETTINGS
(EC)
mA Output Mode
mA device
mA Output Mode
mA device
 EXPERT MENU 
 EXPERT MENU 
4-20mA2 SETTINGS
(EC)
4-20mA2 SETTINGS
Proportional analog 4-20mA2 outputs are combined to the unit
measurements in real time thus driving remote equipment such
as data logger, PLC or Chart recorders or other equipment
suitable to process a remote mA signal.
(EC)
Measure @4mA
0 μS
Measure @20mA
20.00 mS
 EXPERT MENU 
 EXPERT MENU 
Select the value corresponding to 4 and 20 mA points according
to Setpoint 3 settings.
Press E S C returns to S E L E C T M E N U or Press E S C
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
19.4 - 4-20mA2 EC CONDUCTIVITY > DOSING SETPOINT
CTRL2 analog output 4-20mA2 follows the option previously selected settings for cell constant E C p r o b e K f a c t o r .
Select Menu
4- 20mA2 (EC)
CTRL2 series proportional analog 4-20mA2 follows the option previously selected among the
conductivity K factor measuring range.
29
4-20mA2 SETTINGS
(EC)
mA Output Mode
D osing Setpo int
Select Set point value to drive dosing pump or other equipment suitable to process mA signal.
 EXPERT MENU 
4-20mA2 SETTINGS
(EC)
Setpoint Value
1 000 μS
Keep in mind that the value displayed is automatically adjusted to the selected conductivity range
cell constant “K” characteristic in previous paragraphs.
 EXPERT MENU 
4-20mA2 SETTINGS
Select Set point value to drive dosing pump or other equipment suitable to process mA signal.
(EC)
4-20mA2 SETTINGS
(EC)
Working Mode
D irect
Working Mode
Reverse
 EXPERT MENU 
 EXPERT MENU 
4-20mA2 SETTINGS
Window Width: sets the distance from set point at which point 4-20mA mode will start:
4mA = 0 dosing pump pulse, 20mA = max dosing pump pulses frequency. Window width depends
on many variables: distance injection point, reaction time, chemical concentration %....
 EXPERT MENU 
(EC)
Overdosing
0 0.00 h:m
 EXPERT MENU 
Overdosing time-out alarm selects a period for reaching set-point. If set point is not reached within
time, controller will block outputs operations including mA outputs (dosing pump or any equipment
suitable to process a remote mA current signal). Alarm is ON shown on display and will activate
relay Alarm activating an alarm device.
Press E S C returns to S E L E C T M E N U or Press E S C
20.0
Reverse mode operation: output is active when measured
value is higher than selected set-point.
(EC)
Window Width
200 μS
4-20mA2 SETTINGS
Direct mode operation: output is active when measured value
is lower than selected set-point.
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
SENSORS CALIBRATION > EXPERT MENU
◄
Select Menu
►
Ca librat e M1( pH)*
Select Menu
►
CalibrateM2(EC) * *
◄
*Calibration operation will follow the measuring parameter selected in paragraph 8.2 M e a s u r e P a r a m . 1
In case RX has been selected, display will show mV calibration steps.
**Calibration operation will follow the chlorine settings selected in paragraph 8.3 Selecting C h l o r i n e r a n g e
1
M
C
e
Press O K / M E N U to confirm selection and to approach next submenu.
O
U
According to the selected measure parameter, Calibration menu will show the electrode to calibrate.
We recommend using fresh sample solutions or new electrode and sensors or at least in good conditions.
For pH electrode cable length, we recommend max 9 m: for longer distances contact FWT or authorised Dealer.
Displayed mV value shows sensor efficency (according to the sensor manufacturer specifications)
20.1 - CALIBRATING PH ELECTRODE > EXPERT MENU
MEASURE CALIBRATE (pH)
Zero Calibration
6.22 pH
46.4 mV
MEASURE CALIBRATE (pH)
Slope Calibration
9.50 pH
46.4 mV
* When starting calibration display shows random values
Dip pH electrode into 7.00 pH buffer solution for ZERO calibration, wait 2/3 minutes
press ◄► ensuring display shows value 7.00 pH, wait 2/3 minutes
Rinse electrode with water (possible deionised) and dry it by tapping with clean cloth or paper
napkins.
Dip pH electrode into 4 or 9 pH buffer solution for “Slope” calibration, wait 2/3 minutes
Press ◄►ensuring it shows the buffer solution value, 4 or 9 pH, wait 2/3 minutes
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
30
A
Being pH measurement fundamental for the whole chemical-physical balance, we recommend the pH electrode
periodical calibration.
20.2 - CALIBRATING RX (ORP) ELECTRODE > EXPERT MENU
MEASURE CALIBRATE (RX)
Zero Calibration
6.22 pH
46.4 mV
MEASURE CALIBRATE (RX)
Slope Calibration
450 mV
420,1 mV
* When starting calibration display shows random values
Short circuit BNC connector using a metal wire (eg: screwdriver, copper
wire, etc), connect pin core with BNC external element.
Rinse electrode with water (possible deionised) and dry it by tapping with
clean cloth or paper napkins.
* When starting calibration display shows random values
Dip Rx electrode into Redox buffer solution for “Slope” calibration, wait 2/3 minutes.
Press ◄► ensuring display shows value mV solution, wait 2/3 min.
The mV value at the bottom of the display shows the mV electrode signal thus
indicating the electrode efficiency.
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
The mV value at the bottom of the display shows the electrode signal thus indicating the electrode efficiency: for the
electrode signal values, refer to electrode instructions and technical characteristics, however the mV value must match
the one of the buffer solution used for calibration, allowance  20mV.
20.3 - CALIBRATING EC (CONDUCTIVITY) SENSOR > EXPERT MENU
OK to start
CAREFULLY READ MESSAGE THEN PRESS
O
K
For rapid advancement keep pressed firmly either one of the ◄
◄
Select Menu
Calibration
►
► keys
Press O K / M E N U to confirm selection and to approach next submenu
O
U
CTRL2 EC STANDARD CONDUCTIVITY RANGES
It is always RECCOMENDED and mandatory to use the correct K probe according to the range in which the controller is working.
- K1 2000 µS20.00 mS (20.000 μS): it can measure down to 2000 µS but accuracy will be more approximated.
- K5 200 µS 2000 µS: it can measure down to 200 µS but accuracy will be more approximated.
UPON REQUEST other ranges are available only after FWT SYSTEMS Srl approval and with corresponding probe K factor:
> K 0,6 / 0,8 up to 50 mS (50.000 µS): using FWT probe with graphite electrodes or another brand equivalent type.
> K10 20 µS200 µS with appropriate probe.
CTRL EC will show μS values up to 1999 (microSiemens) above this value will automatically change to mS (milli Siemens).
IMPORTANT NOTES:
- if NO temperature sensor is used, move to E x p e r t M e n u S e t t i n gs > T e m p e r a t u re > M a n ua l to change it to required
temperature value;
- when calibrate the sensor ensure that the probe electrodes do not touch any surface except the solution;
- ensure that the sensor is firmly positioned without movements into the solution container;
- wait the necessary time until calibration measurement is stabilised (about 10 min). During calibration, measurements values
will always tend to have a very small variation but this will not prevent from continuing unit operation.
A message will appear before calibration reminding:
We recommend making a sample solution which matches the required EC value in the system (normally the set-point
value); using a good portable EC meter, ensure conductivity levels correspond to the EC requirements. Use a
Conductivity sensor with cell constant according to the selected K factor range (paragraph 9.2) with max cable length of
4 m. After calibration wait 5/10 minutes for measure to stabilise.
MEASURE CALIBRATE
Calibrate
1 µ S*
0 Μ
* When starting calibration display shows random values
Dip EC probe into buffer solution value, wait until measure stabilises. To modify the value
press O K , then press ◄► until it shows the sample solution value, press O K to confirm.
Dip EC probe into sample solution previously prepared, wait until measure stabilises which is
within the sensor K range wait until measure stabilises.
To modify the value press O K key, then press ◄► until it shows the buffer
solution value, press O K to confirm.
K
K
O
U
K
31
Press O K / M E N U to confirm selection
O
U
Press E S C to S E L E C T M E N U
O
Press E S C
U
E S C to continuous M E A S U R E M E N T D I S P L A Y
A
* It will show the value according to previously selected constant cell K range.
Controller will adapt Measurement and Display resolution according to the type of probe used as shown in page 14÷15.
IMPORTANT: once selected EC probe K factor, ENSURE, to connect the proper Conductivity sensor.
In case, the user wished to change the EC K RANGE, even during operations:
BASIC menu to > S E T T I N G S >
O
O
EXPERT > SELECT MENU > SET POINT3 > EC probe K factor
O
O
from  EXPERT  menu, move to > S E L E C T M E N U > S E T P O I N T 3 > E C p r o b e K f a c t o r
O
O
Press E S C to return to S E L E C T M E N U
O
21.0
r
r
U
SETTINGS > EXPERT MENU
Select Menu
S ett ings
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
Programming
BASIC
Programming
EXPE RT
 EXPERT MENU 
 EXPERT MENU 
BASIC programming: simplified mode for not professional
operators
EXPERT programming: complete programming including functions
for a more refined control and results.
After selecting, e.g. choosing EXPERT, at first display will still show Basic but as soon as moving to other
steps it will change to Expert, and vice versa.
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
Flow Sensor
Disa bled
Flow Sensor
Enab led
 EXPERT MENU 
 EXPERT MENU 
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
pH Priority
OFF
pH Priority
ON
 EXPERT MENU 
 EXPERT MENU 
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
Temp.Probe
Manua l
Temperature
XX°C
 EXPERT MENU 
 EXPERT MENU 
CONTROLLER
SETTINGS
CONTROLLER
SETTINGS
Temp.Probe
Auto
Probe Calibration
XX°C
 EXPERT MENU 
 EXPERT MENU 
CONTROLLER
Enabling Flow sensor, in case no water flows into sensor cell holder,
the controller will deactivate all outputs thus ensuring that no extra
chemical is added.
pH priority enables controller to reach first pH setpoint then to move
to Redox (chlorine) dosing operations for measuring stability. pH
priority ON, Redox is OFF; automatically Redox ON once reached
pH set point. pH priority
Manual temperature compensation 0÷100°C.
Press ◄► select the existing water temperature into the plant
to treat.
Selecting Manual mode, if user does not select any temperature
value, controller will set 25°C value as default, programmable.
Selecting Auto automatic compensation of temperature/electrode
measurements, the controller will always show the exact PH value
against the current temperature.
Press ◄► to show the temperature into the water to calibrate
temperature sensor PT100
SETTINGS
Backlight Low lev.
30%
It adjusts the display save energy mode backlight level; touching any button will restore full 100%
display operative brightness.
 EXPERT MENU 
32
CONTROLLER
SETTINGS
Language
English
It allows to select the programming menu language.
 EXPERT MENU 
CONTROLLER
SETTINGS
Factory Settings
NO
 EXPERT MENU 
CONTROLLER
FACTORY SETTINGS: it restores factory default settings. To be used ONLY when parameters or
measurements are not responding correctly or when user wants to ensure to re-program from zero.
Not to abuse, continuous restoring can affect controller efficiency.
SETTINGS
Factory Settings
YES
 EXPERT MENU 
CONTROLLER
◄
SETTINGS
CONTROLLER
CONFIRM ?
NO
► ◄
 EXPERT MENU 
SETTINGS
CONFIRM ?
YES
►
 EXPERT MENU 
Once confirmed YES, display will be OFF for 1 second than will return to continuous M E A S U R E M E N T D I S P L A Y
22.0
A
PH or RX (ORP) ELECTRODES CLEANING AND MAINTENANCE
The formation of deposits on the electrode will produce erroneous readings. The necessary cleaning action depends on the type
of deposit under consideration. In case of thin deposits, shake the electrode or use a spray of distilled water. Organic residues or
particularly resistant deposits should be removed by chemical means. Mechanical cleaning of the bulb should be resorted to only
in extreme cases, but bear in mind that abrasion can lead to irreparable damage. If cleaning does not fully re-establish the efficacy
of the electrode, it may be that the electrode has aged. Ageing will show itself in either a measurement error or a slow response.
RECONDITIONING VALID FOR PH AND RX (ORP) ELECTRODES
The following chemical treatments may be carried out to recondition the electrode as far as the bulb cleaning.
1) Immerse the tip of the electrode in 0.1N hydrochloric acid (HCl) for 15 seconds, then rinse with water and dip again the electrode
in a 0.1N solution of sodium hydroxide (NaOH) for 15 seconds, followed by a second rinsing. Repeat this sequence
three times, and then carry out another check measurement. If the reading remains erroneous, proceed to point 2.
2) Immerse the tip of the electrode in a 20% solution of ammonium bifluoride (NH2F-HF) for two or three minutes, then rinse
with water and make another measurement test. If the reading is still wrong, proceed to point 3.
3) Immerse the tip of the electrode in 5% hydrofluoric acid (HF) for 10 seconds, then rinse thoroughly in water and
very quickly in 5N hydrochloric acid (HCl), followed by a second rinsing in water. If the check measurement still
produces wrong measurements, it only remains to change the electrode.
We recommend using fresh sample solutions or new electrode and sensors or at least in good conditions.
For pH electrode cable length, we recommend max 9 m: for longer distances contact FWT or Dealer.
22.1 - RX (ORP) REDOX CURVE
Redox measurements depend on a
constant stable pH level.
To obtain the approximate mV settings,
operator must find the exact point crossing
the ppm required axis, measured pH level =
mV settings (on the left):
33
22.2 - CONDUCTIVITY SENSORS NOTES
CTRL2 EC works with simple conductivity 2-electrode open sensors, Graphite electrode OR AISI 316 both with PTFE
body. Also available with AISI 316 / PVC body.
FOR CONDUCTIVITY 4 WIRES (with internal temperature sensor) SENSORS: due to the various types on the market,
in case operator wished to use such sensors, please contact FWT service or Local Dealer to get the right configuration
for connecting to terminal board. CTRL2 EC is NOT suitable for inductive sensors !
CTRL2 EC automatically adjust itself for various conductivity ranges by adapting the controller to different probes cell constant
“K” characteristic. Conductivity measurement are in micro Siemens features 4 K factor ranges (Cell Constant) suitable for:
IMPORTANT: the above μS ranges are just indicative, considering that, for example, a K1 probe can make good measurements
below 2000 μS, only resolution will be less accurate. However, the same concept does not apply to higher ranges.
22.3 - TEMPERATURE / EC ALFA FACTOR
EC alfa factor
EC alfa factor is the correction factor for
conductivity measurement in function of
temperature: EVERY CONDUCTIVITY
SENSOR IS TEMPERATUREDEPENDENT. Conductivity varies linearly
according to the temperature of the
solution. This coefficient normalizes the
measurement of the conductivity at the
reference temperature of 25° C. Alfa factor
ensures best measurement results and
accuracy.
2% per °C is an average found typical of
many water samples with some
dissolved solids. Over wide temperature
spans (e.g. 0 to 100 °C) the temperature
compensation factor may not remain
constant.
CTRL2 EC automatically adjust itself for various conductivity ranges by adapting the controller to different probes cell constant
“K” characteristic. Conductivity measurement are in micro Siemens features 4 K factor ranges (Cell Constant) suitable for:
IMPORTANT: the above μS ranges are just indicative, considering that, for example, a K1 probe can make good measurements
below 2000 μS, only resolution will be less accurate. However, the same concept does not apply to higher ranges.
22.4 - CONDUCTIVITY SENSORS MAINTENANCE
Sensor Storage
Short term: rinse the sensor electrodes in demineralised water; allow drying and storing dry.
Long term: rinse the sensor electrodes in demineralised water, allow to dry, cover with tip with a plastic shipping cap, store dry.
Monthly Maintenance
A monthly maintenance check is recommended by grab sample calibration since the sensor is typically installed in the process
and not easy to remove. Follow the procedure under calibration by grab sample.
Keep a log of the cell constant at each monthly calibration.
When to clean your sensor
Various factors can affect the physical limits on the liquid and the apparent cell constant; scale, biological growths, oils, wax, gum,
etc all reduce the area for current-carrying liquid. Periodic cleaning of conductivity sensors in continuous use will remove these
deposits; restore the conducting surfaces, controlled cell volume, and thus the cell constant.
22.5 - CONDUCTIVITY SENSORS CONFIGURATION AND RANGE
Model:
STGEC
Part no.:
99210014
Electrodes: GRAPHITE
Pressure:
8 bar Max
Body:
PTFE
Cable length: 4 m
Weight:
135 gr.
Cell constant:
K0,8 Range: standard 20 mS (20.000 μS)
It reaches up to 50 mS (50.000 μS)
34
Model:
STEC K1
Part no.:
99210008
Electrodes: AISI 316
Pressure:
8 bar Max
Body:
PTFE
Cable length: 3 m
Weight:
135 gr.
Cell constant:
K1 Range: standard 20 mS (20.000 μS)
Model:
STEC K5
Part no.:
99210009
Electrodes: AISI 316
Pressure:
8 bar Max
Body:
PTFE
Cable length: 3 m
Weight:
137 gr.
Cell constant:
K1 Range: standard 20 mS (20.000 μS)
Model:
STGECT-E K0,6
Part no.:
ASOC411100
Temperature: PT100 -5÷100°C
Electrodes: GRAPHITE
Pressure:
5 bar Max
Body:
PTFE
Cable length: 5 m
Weight:
137 gr.
Cell constant:
K0.6 Range: standard 100 mS (100.000 μS)
CONDUCTIVITY PROBE STEM TYPE K=0,6
22.6 - CONDUCTIVITY EC PROBE CABLE WIRING
RED wire
WHITE wire
Shielded wire / Ground
Do not connect
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23.0
CTRL2 PH(RX)EC TYPICAL INSTALLATIONS
Herefollowing installation diagrams are just examples of typical installation. However, each system to be treated differs
from one another, therefore ensure that installation responds to commissioning requirements following the instructions in
the present booklet.
23.1 - ELECTRODE HOLDER PH OR RX ELECTRODE, FLOW SENSOR, EC AND TEMPERATURE PROBE
1.
2.
3.
4.
5.
6.
7.
Inlet fitting and nipple for incoming water flow
Base module for flow adjustment, proximity switch, and temperature
Proximity switch
Temperature probe PT100
pH or RX (ORP) electrode
Outlet fitting and nipple
Conductivity sensor
3
6
4
2
5
1
23.2 - IN-LINE ELECTRODE HOLDER, FLOW SENSOR, EC AND TEMPERATURE PROBE
a.
b.
c.
d.
e.
f.
g.
h.
e
Inlet fitting and nipple for incoming water flow
Base module for flow adjustment, proximity switch, and temperature
Proximity switch
Temperature probe PT100
Sonda di conducibilità
pH or RX (ORP) electrode
Clamp saddle for ELINE electrode holder
Pipe to be treated
c
f
b
d
g
a
h
23.3 - LEVEL CONTROL PROBES AND DOSING TANKS INSTALLATION
LEVEL 2
LEVEL 1
Dosing tanks
36
Level
floating
switch
24.0
OVERALL DIMENSIONS / ENCLOSURE CHARACTERISTICS
CTRL2
Dimension mm
Net weight: 1530 gr
Gross weight: 1730 gr
CTRL2 B
Dimension mm
Net weight: 1000 gr
Gross weight: 1200 gr
Enclosure:
25.0
Material - Protection CTRL2
Material - Protection CTRL2 B
Front controls
Working temperature
Plastic ABS-V0 self-extinguish IP66, hinged front panel with safe lock
Plastic ABS-HB self-extinguish IP56, lid with captive screws
Polycarbonate adhesive
050 °C
TROUBLESHOOTING CONTROLLER
WARNING: ignoring safety information can endanger life or result in serious injury !
BEWARE: in presence of chlorine gas or an environment saturated with it, ensure to disconnect the power supply of
the chlorine gas dosing equipment; ensure also to secure the power supply to other equipment being part of the plant.
Before working on the unit, disconnect it from mains network
MALFUNCTION
POSSIBLE CAUSE
SOLUTION
a. Check electrical connections
1. Display is OFF
2. Error NO LINK WITH METER1_2
No power supply
b. Check if mains correspond to power supply printed
instrument label.
Burning smell
Check pcb and replace it under FWT authorization
Wrong alignment of the pins
between circuit boards
PH / Redox
levels are NOT stable
3. Display measurements don’t
move (there are no changes)
Check pins alignment between I/O main board and
measuring pcb or flat cable condition or the measuring
board two side selectors position. If problem persists,
contact FWT.
Double check levels by means of portable instrument or
colorimetric kit, particularly PH level for Chlorine
reference measure.
Conductivity levels are NOT
stable
Double check levels by means of portable instrument
EC conductivity levels, particularly temperature level for
EC reference measure.
Signal from sensor doesn’t
change
Repeat sensor calibration and if the problem remains
change the probe
37
4. Display measurements change
continuously (measuring jumps)
5. It’s not possible to complete
sensor calibration procedure
Electrical disturbs from
electrical local network
Check the electrical local network. Check system
ground connection.
Micro-Electrical disturbs into
the measuring liquid
Check controller calibration if controller measures
correctly eliminate electrical disturbs and refer to below
point A.
Buffer solution kit old or
contaminated
Change buffer solution and use portable Kit
Sensor is defective
Check here following below hints.
IMPORTANT TESTS in the above cases 2, 3, 4, always test the unit functioning making the following steps:
A. Dismount the unit from the system and mount it into another room or you own lab without connection to other equipment
but directly to local network mains.
B. Recreate into a bucket with fresh water the physical-chemical conditions as in the plant, for pH and conductivity levels.
C. Program the unit and calibrate the sensor/s.
a. If results are a correct unit functioning, it means there are problems with the systems
b. If problems persist, change sensor with brand new ones: if problem persist, the unit is defective, contact the
Manufacturer or Dealer
5. Set-point relay doesn’t close
the contact
Set-point value is incorrect
Change set-point value
Set-point “direction” mode is
incorrect
Change set-point function mode, direct or reverse, from
the menu functions
KEEP IN MIND: unit with universal voltage 100250Vac (±10%) or 924Vdc. If the actual voltage is constantly at the
limit (lower or higher), or when spikes are much higher than mentioned range, the unit pcb is electronically protected
against Voltage fluctuations; outside the above-mentioned ranges, controller will not work and circuit boards must be
replaced. We RECOMMEND using voltage protections, checking system ground and, when connecting in parallel other units,
using remote contact switch. A plant not built according to correct electrical rules, without a ground system, with frequent ON/OFF
operations, could directly affect the circuit boards. It is also suggested installing a UPS (Uninterruptible Power Supply) to ensure
power continuity. A discontinuous voltage along with many On/Off operations, could affect the pcb’s integrity and Data loss.
TROUBLESHOOTING HINTS FOR CONDUCTIVITY SENSOR
Slow Response typically due to excessive sample line length and low flow, thus producing long sample transport lags. Resolve
by adding a fast-flow loop with the sensor in a short side stream, or by shortening the line. Slow response can also be caused
by a build-up of dirt in the sample line. In this case the problem may be alleviated by changing the take-off point or by installing
a knock-out pot.
Readings consistently low or spike low characteristic of bubbles in the sample line passing through the sensor or hanging up
in the sensor.
Readings gradually falling the controller can no longer be calibrated properly. This problem is typical of scale or sludge/slime
deposits in the sensor. The sensor may need cleaning.
Readings at maximum under all conditions. First verify that controller is displaying conductivity using Conductivity portable
controller.
38
26.0
CONTROLLER TECHNICAL CHARACTERISTICS
▪ 0 pH .... 14 pH (0.....100 °C)
▪ Resolution  0.01 pH
▪ Input resistance > 10
Measuring range PH:
▪ Accuracy 0.5% of input range
12
Ohm
▪ Zero:  10% adjustment range from calibration point
▪ Gain calibration:  15% electrode adjustment gain
*PWM = Pulse Width Modulation
▪ Hysteresis: 0.05 pH (programmable)
▪ PWM / timed pulses activating point: 1.50 pH or 150mV (programmable)
▪ – 1500 mV .... +1500 mV
▪ Input resistance > 1012 Ohm
Measuring range RX (ORP):
▪ Resolution  1 mV
▪ Accuracy 0.5% of input range
▪ Input resistance > 1012 Ohm
▪ Hysteresis: 10 mV (programmable)
▪ K 1 ranges up to 20.00 mS / Hysteresis / PWM point = 500 μS
Resolution 10 μS
Conductivity EC Measuring range and K
factor (cell constant):
▪ K 5 ranges up to 2.000 μS / Hysteresis / PWM point = 50 μS
Resolution 1 μS
▪ K10 ranges up to 200 μS / Hysteresis / PWM point = 0,50 μS
Resolution 0,1 μS (upon request and only with special sensor)
▪ K 0.6 / K 0.8 ranges up to 50.00 mS / Hysteresis / PWM point = 5000 μS
Resolution 1000 μS
(only with graphite sensor electrodes)
Temperature setting:
Temperature probe range:
Manual or automatic compensation (latter combined temperature probe PT100)
▪ Resolution 0.1% °C
▪ Accuracy: ± 0.5% °C
– 20 ....100°C
Power supply / Power consumption:
Universal power supply 100250Vac / 5W at 240Vac
Upon request power supply 936 Vdc / 924 Vac
Microprocessor technology:
SMD components mounting, digital controls keypad 6 key
Linearity, Stability Reproducibility:
 0.5 % under standard conditions
Display:
back-lit display 126x64; Display visible area 70x37 mm
Delay on Set-point:
Delay time relay activation, programmable for each set-point (999 sec.)
Start-up Delay:
Delay time relay when switching ON the unit, programmable
Power consumption = Nominal current:
Internal electrical protection:
230Vac 5,5W 24mA ▪ 24Vac-dc 5,5W 230mA ▪ 12Vdc 5,5W 458mA
power supplier guarantees electrical protection (instead of fuse)
Level / Remote relay control
Chemical additive level (level switch not included) output voltage +5Vdc
Output RELAY A (set-point 1):
Outputs:
Outputs:
PH or RX (Orp) ON-OFF / PWM mode voltage free contact, relay 5Amax 230Vac
Output RELAY B (set-point 2):
PH or RX (Orp) ON-OFF / PWM mode voltage free contact, relay 5Amax 230Vac
Output RELAY C (set-point 2):
EC (Conductivity) ON-OFF / PWM mode voltage free contact, relay 5Amax 230Vac
Output RELAY D (ALARM):
ALARM contact voltage free 5Amax 230Vac
FLUX sensor (proximity switch):
It blocks output operations in case of no flow into the sensor cell
0/4...20 mA1 output:
Adjustable (500  max input impedance), with galvanic separation.
Related to PH or RX measuring settings.
0/4...20 mA2 output:
Adjustable (500  max input impedance), with galvanic separation.
Related to EC (Conductivity) measuring settings.
Unit load:
Resistive load 5A at 230Vac / Inductive load 0.5A at 230Vac
Insulation voltage relay output:
> 3000Vac
Relay contact lifespan:
 5x104 switching operations (5A at 230Vac)
Unit Working temperature:
Ideal working temperature 5°C÷40°C, withstand 0°C÷45°C
Environmental Conditions:
Possibly dry environment, altitude up to 2000m, Relative humidity 80% for
temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C.
Pollution degree 2.
Noise Level:
Irrelevant
Transport and storage conditions:
– 560°C possibly dry environment
39
WASTE OF ELECTRICAL AND ELECTRONIC EQUIPMENT DIRECTIVE (WEEE, RAEE in Italy) UP TO LAST EDITION
The marking shown below indicates that the product cannot be disposed of as part of normal household waste. Electrical and
Electronic Equipment (EEE) can contain materials harmful to health and the environment, and therefore is subject to separate
waste collection: it must be disposed of at appropriate waste collection points or returned to the distributor against purchase of
new equipment of similar type or having the same functions. The directive mentioned above, to which refer for further details,
provides for punitive actions in case of illegal disposal of such waste.
FWT SYSTEMS S.r.l.
Via Cancelliera 16,
Ariccia (RM) 00072, ITALIA
Tel.+39 06 9311940 / 06 9316 0328
Fax +39 06 99334972
info@fwtsystems.it
CTRL2 PH(RX)EC
www.fwtsystems.it
Rev. 01_0920
40