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Products > 4-20 mA Electrode Transmitters
4-20 mA Loop-powered Electrode Transmitters

Transmit the Electrode signals (Ion-selective electrodes, ORP and pH electrodes) to
PLCs, Displays, Controllers, Instruments and Automation Systems

4-20 mA Loop-powered Electrode Transmitters

Which Electrode Signal Transmitters to Choose?

Type Input Output Max. Distance Electrode Mounting Unit Price Ex VAT (GBP)
TRA-ISE ISE (mV, selectable range) 4 - 20 mA 250 meters 1 x Ion-Selective Electrode Wall-Mounted 230.00
TRA-PHFT pH (± 400 mV, 0 ~ 14 pH )
+ Pt1000 (0-100°C)
4 - 20 mA 250 meters 1 x pH Electrode +
1 x Pt1000 Temp. Sensor
Wall-Mounted 180.00
TRA-PHRT pH (± 200 mV, 3.5 ~ 10.5 pH)
+ PT1000 (0-100°C)
4 - 20 mA 250 meters 1 x pH Electrode +
1 x Pt1000 Temp. Sensor
Wall-Mounted 180.00
TRA-PHFORP pH (± 400 mV, 0 ~ 14 pH )
+ ORP (± 1000 mV)
4 - 20 mA 250 meters 1 x pH Electrode +
1 x ORP Electrode
Wall-Mounted 220.00
TRA-PHRORP pH (± 200 mV, 3.5 ~ 10.5 pH)
+ ORP (± 1000 mV)
4 - 20 mA 250 meters 1 x pH Electrode +
1 x ORP Electrode
Wall-Mounted 220.00
TRA-PHF pH (± 400 mV, 0 ~ 14 pH )
4 - 20 mA 250 meters 1 x pH Electrode
Wall-Mounted 130.00
TRA-PHR pH (± 200 mV, 3.5 ~ 10.5 pH)
4 - 20 mA 250 meters 1 x pH Electrode
Wall-Mounted 130.00
TRA-PHF-DIN pH (± 400 mV, 0 ~ 14 pH ) 4 - 20 mA 250 meters 1 x pH Electrode DIN Rail 115.00
TRA-PHR-DIN pH (± 200 mV, 3.5 ~ 10.5 pH) 4 - 20 mA 250 meters 1 x pH Electrode DIN Rail 115.00
TRA-ORP-DIN ORP (-1000 ~ +1000 mV)
4 - 20 mA 250 meters 1 x ORP Electrode
DIN Rail 115.00
TRA-ORP ORP (-1000 ~ +1000 mV) 4 - 20 mA 250 meters 1 x ORP Electrode Wall-Mounted 130.00
TRA-DOG D.O. ( 0 ~ 10 µA )
4 - 20 mA 250 meters 1 x Dissolved Oxygen Electrode
Wall-Mounted 130.00
TRA-PT1K Temperature ( 0 to 100 °C ) 4 - 20 mA 250 meters 1 x Pt1000 Temperature Sensor Wall-Mounted 120.00

Place an Order or Enquiry

TRA-ISE Transmitter for Ion
1-Channel Wall-mounted Transmitter for
Ion Selective Electrode
Wall-mounting Industrial Transmitter for Ion-Selective Electrode

Compatible with all types of Ion Selective Electrode (BNC connector), including EAI ISE
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input
    One 2 mm socket for external Reference Electrode
    One 4 to 20 mA Output with cable gland (cables are screwed to the on-board terminals marked "+" and "-".
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Input range:On-board selectable settings with rotary switches and trimming potentiometer
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • Transfer Characteristic:
    Converts the selected input range of the Ion concentration to the full output range (4-20 mA).
    The lowest ion concentration gives output of 4 mA;
    The highest ion concentration, gives output of 20 mA
 
 

TRA-PHFT and TRA-PHRT Transmitters for pH and Temperature
2-Channel Wall-mounted Transmitter for pH Electrode and Pt1000 Temperature SensorCompact wall-mounting Industrial Transmitter for pH Electrode and Pt1000 Temperature Sensor

Two Types available:
1. TRA-PHFT (Full pH range: 0-14 , 0-100 °)
2. TRA-PHRT (Reduce pH range: 3.5-10.5, 0-100 °)


Compatible with all types of pH Electrode (BNC connector) and Pt1000 Sensor (3.5 mm mono audio jack plug), including EAI pH and EAI TS-1000
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input
    One 2 mm socket for external Reference Electrode
    One 3.5 mm socket Pt1000 Temperature sensor Input
    Two 4 to 20 mA Outputs through one cable gland (cables are screwed to the on-board terminals marked as "EL" and "TMP" with "+" and "-" signs.
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • 2 types of Transfer Characteristic are available:
    TRA-PHFT: pH 0-14 to full output range (4-20 mA)
    pH= 0 input gives output of 4 mA;
    pH = 14 input gives output of 20 mA
    TRA-PHRT: pH 3.5-10.5 to full output range (4-20 mA)

    pH = 3.5 input gives output of 4 mA;
    pH = 10.5 input gives output of 20 mA

    Temperature Channel ( Pt1000 Sensor):
    0°C input gives output of 4 mA;
    100°C input gives output of 20 mA
 
   
 
TRA-PHFORP and TRA-PHRORP Transmitters for pH and ORP
2-Channel Wall-mounted Transmitter for
pH and ORP Electorates


Two Types available:
1. TRA-PHFORP (Full pH range: 0-14 , ORP: ±1000 mV)
2. TRA-PHRORP (Reduce pH range: 3.5-10.5, ORP: ±1000 mV)

Compatible with all types of pH and ORP Electrodes (BNC connectors), including EAI pH and EAI ORP
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52
  • Connectors:
    Two BNC Sockets (50 Ohm type ) for Electrode signal Inputs
    Two 4 to 20 mA Outputs through one cable gland (cables are screwed to the on-board terminals marked as "EL1"" and "EL2" with "+" and "-" signs.
  • Power Supply:
    Output loop-powered (12 V DC to 36 V DC)
    Optional:External 24 V DC, please contact us
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • 2 types of Transfer Characteristic are available:
    TRA-PHFORP: pH 0-14 to full output range (4-20 mA)
    pH= 0 input gives output of 4 mA;
    pH = 14 input gives output of 20 mA
    TRA-PHRORP: pH 3.5-10.5 to full output range (4-20 mA)

    pH = 3.5 input gives output of 4 mA;
    pH = 10.5 input gives output of 20 mA

    ORP Channel: Full input range ORP( ± 1000 mV) to full output range (4-20 mA), thus,
    +1000 mV input gives output of 4 mA;
    -1000 mV input gives output of 20 mA
 
   
1-Channel Wall-mounted Transmitter for pH Electrode
TRA-PHF and TRA-PHR Transmitters
for pH
Wall-mounting Industrial Transmitter for pH Electrode
Two Types available:
1. TRA-PHF (Full pH range: 0-14)
2. TRA-PHR (Reduce pH range: 3.5-10.5)
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input
    One 2 mm socket for external Reference Electrode
    One 4 to 20 mA Outputs with cable gland (cables are screwed to the on-board terminals marked "+" and "-".
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • 2 types of Transfer Characteristic are available:
    TRA-PHF: pH 0-14 to full output range (4-20 mA)
    pH= 0 input gives output of 4 mA;
    pH = 14 input gives output of 20 mA
    TRA-PHR: pH 3.5-10.5 to full output range (4-20 mA)

    pH = 3.5 input gives output of 4 mA;
    pH = 10.5 input gives output of 20 mA

Compatible with all types of pH Electrode (BNC connector), including EAI pH

 

Choose another Transmitter

 
1-Channel DIN-Rail Transmitter for pH Electrode
TRA-PHF-DIN and TRA-PHR-DIN Transmitters for pH
Very Compact DIN Rail-mounting Industrial Transmitter for pH
Two Types available:
1. TRA-PHF-DIN (Full pH range: 0-14)
2. TRA-PHR -DIN (Reduce pH range: 3.5-10.5)
  • Dimensions: 80x 70 x 20 mm (without BNC connector)
  • Mounting: Can be wall-mounted on small or large DIN -Rails (snap-on fixing)
  • Enclosure: ABS, Protection Class: IP 50
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input;
    Two parallel Screw-terminals "R";
    Two Screw-terminals marked "+" and "-" for 4 to 20 mA Output.
  • Power Supply: Output loop powered (12 V DC to 36 V DC)
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • 2 type of Transfer Characteristic are available:
    TRA-PHF-DIN: pH 0-14 to full output range (4-20 mA)
    pH= 0 input gives output of 4 mA;
    pH = 14 input gives output of 20 mA
    TRA-PHR-DIN: pH 3.5-10.5 to full output range (4-20 mA)

    pH = 3.5 input gives output of 4 mA;
    pH = 10.5 input gives output of 20 mA


    Compatible with all types of pH Electrode (BNC connector), including EAI pH

Choose another Transmitter

   
Very Compact DIN Rail-mounting Transmitter for pH

Terminals for all types of DIN -Rails transmitter

  • Two parallel Screw-terminals "R"
    (one can be used to extend the reference to multiple transmitters) as reference input additional to the outer metal part of the BNC connector (connected to the screen of the coax cable)
  • Two Screw-terminals marked "+" and "-" for 4 to 20 mA Output. Wrong Polarity will not damage the transmitter and will not cause an electrical shortcut
 
TRA-ORP-DIN Transmitter for ORP
1-Channel DIN-Rail Transmitter for ORP Electrode
Very Compact DIN Rail-mounting Industrial Transmitter for pH
  • Dimensions: 80x 70 x 20 mm (without BNC connector)
  • Mounting: Can be wall-mounted on small or large DIN -Rails (snap-on fixing)
  • Enclosure: ABS, Protection Class: IP 50
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input
    Two parallel Screw-terminals "R";
    Two Screw-terminals marked "+" and "-" for 4 to 20 mA Output
  • Power Supply: Output loop powered (12 V DC to 36 V DC)
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • Transfer Characteristic:
    Full input range ORP( ± 1000 mV) to full output range (4-20 mA), thus,
    +1000 mV input gives output of 4 mA;
    -1000 mV input gives output of 20 mA


    Compatible with all types of ORP Electrodes (BNC connector), including EAI ORP
 
   
 
TRA-ORP Transmitter for ORP
1-Channel Wall-mounted Transmitter for ORP Electrode
Wall-mounting Industrial Transmitter for pH Electrode

Compatible with all types of ORP Electrodes (BNC connector), including EAI ORP
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input
    One 2 mm socket for external Reference Electrode
    One 4 to 20 mA Outputs with cable gland (cables are screwed to the on-board terminals marked "+" and "-".
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Input Resistance: typical 1 Tera Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • Transfer Characteristic:
    Full input range ORP( ± 1000 mV) to full output range (4-20 mA), thus,
    +1000 mV input gives output of 4 mA;
    -1000 mV input gives output of 20 mA
 
   
1-Channel Wall-mounted Transmitter for
Dissolved Oxygen Electrode (D.O.
Galvanic)
TRA-DOG Transmitter for
Dissolved Oxygen
(D.O.)
Wall-mounting Industrial Transmitter for pH Electrode
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Connectors:
    One mini DIN Socket for Electrode signal Input
    One 4 to 20 mA Outputs with cable gland (cables are screwed to the on-board terminals marked "+" and "-".
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Input Resistance: typical 10 kOhm
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • Transfer Characteristic:
    The electrode input current range of 0~10 µA to full output range of 4~20 mA, thus,
    0 µA input gives output of 4 mA;
    10 µA input gives output of 20 mA
  • The Transmitter is designed to work with EAI D.O.Galvanic
 
   
 
TRA-PT1K Transmitter for Temperature
1-Channel Wall-mounted Transmitter for Pt1000 Temperature Sensor
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Connectors:
    One 3.5 mm mono Audio Jack plug for Sensor signal Input
    One 4 to 20 mA Outputs with cable gland (cables are screwed to the on-board terminals marked "+" and "-".
  • Power Supply: Output loop-powered (12 V DC to 36 V DC)
  • Load Resistance: must be less than 200 Ohm for 12V and 800 Ohm for 36 V loop-power
  • Transfer Characteristic:
    The full input range of 0°C~100°C to full output range (4-20 mA), thus,
    0°C input gives output of 4 mA;
    100°C input gives output of 20 mA

    Compatible
    with all type of Pt1000 Temperature Sensor (3.5 mm mono-audio/jack plug), including EAI TS-1000 Temperature Sensor
 
   
   
 

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