Manufacturers of Process
Control Instruments
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Conductivity 2-Wire Transmitter-874
( Din rail )
( Din rail )
( Din rail )
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  • Rugged & Time Proven Designs
  • Temperature Compensation available
  • Various sizes / Mountings / Enclosures supported



Pantech's Two Wire Transmitters, model 874 is designed over low drift low power components.It pumps in

a constant current into the liquid through the conductivity cell to measure the electrical conductivity of any liquid.

The square wave signal is selected as an excitation voltage for the conductivity cell for the ease for processing. It provide 4-20mA dc signal on the same two wire which carry the 24 V DC for conductivity measurement. The transmitter is an ideal choice for Linearized measurement with standard conductivity cell. Temperature of the liquid is monitered by a RTD element and compensation is provided over the complete operating range. It provides a current output signal of 4 – 20 mA DC capable of driving a load of upto 650Ω.


The range of the instrument can be selected by setting the DIP switches on the module and with proper cell constant. The temperature compensation provided as standard is 2%/deg. C but can be changed to a value anywhere between 0 to 4%.


The transmitter is available in field mounted housings with or without local display. The local 3-½ digit loop powered display reduces the load capability of the transmitter to around 500Ω. Also the transmitter is available in weather or explosion proof housing.


1) Conductivity cell, K=0.1 or 1

2) RTD Type Pt.100

Input Range

0 – 100μS to 0 – 5000 μS

(Selected by DIP switches)


Temp. Compensation

0 - 125ºC

2%/deg. C (standard)


Analog Output

4 – 20mA DC


Analog output load capability

600Ω maximum

500Ω with digital display

  Output accuracy

+/- 0.25% of span

Power supply

24 V DC (22.5 to 28.0V)


Power consumption

0.5 VA max.


Ambient temperature

0 – 50° C.


Storage temperature

0 – 70° C.



90% RH (non-condensing)

Ordering Information

Please confirm the availability of the model by cross checking the table mentioned on the backside.


Basic Model No. (Specified by first 3 digits)

874 - Conductivity Transmitter

Mounting (Specified by letter following 3 digits)

P - Panel

W - Weather proof housing

F - Flame proof housing


Input 1 (Specified by first digit following the letter)

1 - Conductivity cell

  Input 2 (Specified by the next digit / letter)

1 - RTD Pt 100

2 - T/C Type K

Please specify the maximum temperature range.

Cell constant (Specified by the next digit / letter)

1 - Cell K = 1

2 - Cell K – 0.1

Display Option (Specified by the next digit / letter)

0 - None

1 - 3-½ digit LCD


Made in India By:



102, Shailja Complex II,

Akota – Padra Road,

Nr. R. C. Patel Ind. Estate,

Vadodara – 390 020.

Telefax: (265) 2331380/6616080

Mobile: +9198240 16466/ + 9199242 10722