Manufacturers of Process
Control Instruments
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RTD Two Wire Transmitters-871
( Field mount type )
( Din rail type )
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  • Rugged & Time Proven designs
  • Both � Fix & Configurable type ranges
  • Various sizes / Mountings / Enclosures supported



Pantech's Two Wire Transmitters, model 871 is designed over low drift, low power components – Hence confirms the standard specifications of being a X’mitter. It is designed to provide 4-20mA DC signal on the same two wires, which carry the 24 V DC.. This 4-20 mA DC signal is corresponding to the temperature measured by the RTD elements at the input of this 2-wire transmitter. The transmitter is an ideal choice for temperature measurement with RTD’s. It provides a current output signal of 4 – 20mA DC in a two wire loop, capable of driving a load of upto 650°. This eliminates needs to run compensating cable or three core cable between the field and control room.

The instrument can be calibrated throughout the range of RTD. The output is linear with respect to temperature for RTD input.


Model 871 features :-

  1. Input type is fixed at RTD Pt. 100 3 wire.

  2. Input temperature range is fixed or variable. The user has to specifty however this clearly.

  3. The user can configure to change the input temperature range by DIP switch settings / potentiometers on PCB level.

  4. Convenient only when all the specifications are clear and steady.

  5. Can be provided in : DIN RAIL / HEAD MOUNT / PCB structure as a standard types.


RTD Type Pt.100

Input range ( -100 to 600 deg. C )

Fixed – Can be varied +/- 5% by potentiometers

Variable – Can be varied for whole range with DIP

Switch and Potentiometers

Analog Output

4 – 20mA DC


Analog output load capability

650Ω maximum


Output accuracy

+/- 0.15% of span


Power supply

24 V DC (22.5 to 28.0V) in two wire loop


Power consumption

0.5 VA max.


Ambient temperature

0 – 50° C.


Storage temperature

0 – 70° C.



90% RH (non-condensing)


Weatherproof, Flameproof and all other standard types


Head / Panel / Wall / Field / Dinrail / Eurocard


Standard / Optimum

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)

871 - RTD Two-Wire Transmitter

Enclosure / Mounting ( letter following 3 digits)

P - Weatherproof - Panel

W - Weatherproof - Wall

F - Flameproof - Wall / field

I - IP65 grade – wall / field

C - Raw PCB card type only

H - Head mounted

( as per DIN standards )

E - Weatherproof - Eurocard

S - Specials


RTD range(Specified by the next digit / letter)

F - Fixed type

V - Variable type

( By DIP switch / Potentiometer )


** Customized developments can be made if the quantity permits


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