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Universal Two Wire Transmitters-872
 
7665
( Head Mount, LCD display )
 
7650
( Din rail type, LED display )
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  • Rugged & Time Proven designs
  • Microprocessor based and fully configurable
  • Allows to select Temp. input type & Range by keys
  • Equipped with 4 digit optional display
  • Various sizes / Mountings / Enclosures supported
 
UNIVERSAL TYPE TEMP. TRANSMITTER ( RTD / Thermocouples / Others ) Microprocessor based and Fully configurable MODEL 872
 

Introduction

 

Pantech's Two Wire Transmitters, model 872 is designed over low drift, low power components. The transmitter is deisgned to accept universal type RTD / thermocouple like temp. inputs or other Linear inputs, and provide 4-20mA DC signal on the same two wires, which carry the 24 V DC. Note that the user can select any one of the available RTD/thermocouple/LInear inputs by configuring through front fascia keys. The transmitter is also optionally equipped with a local 4 digit LCD/LED display to exhibit the input signal value as configured for. All the configurations like : input signal type selection, ZERO and SPAN adjustments for display range and outputs can be done through front keys only. The output signal of 4 – 20mA DC capable of driving a load of upto 800°. This eliminates needs to run compensating cable or three core cable between the field and control room. For thermocouple inputs, CJC compensation is inbuilit. The output is linear w.r.t. the input temperature signal. The transmitter is available in field mounted / panel mounted housings as required.

 

Model 872 Features

  1. Allows the user to select the input signal type . The 2 wire transmitter allows the use to select any one of RTD / Thermocouple diff. types / Linear inputs by front keys only.

  2. The ZERO and SPAN configurations is done by the front keys only. Hence the display ranges and output signal ranges are also configured. This feature allows the user to take output signal / display range on any subset range of the whole input temperature range.

  3. The display can be optional feature also.

  4. 4-20 mA DC can be given galvanically isolated.

 
Specifications
 
Inputs – UNIVERSAL ( all of the below )

RTD Pt. 100 range : 100 to 600 deg. C

T/C J type range : -200 to 760 deg. C

T/C K type range: -250 to 1300 deg. C

T/C R type range: 0 to 1750 deg. C

T/C S type range: 0 to 1750 deg. C

T/C T type range: -250 to 400 deg. C

T/C B type range: 450 to 1820 deg. C

T/C E type range: -100 to 1000 deg. C

Linear inputs of 0-20 mA / 0-50 mV

UNIVERSAL ( all of the temperature i/p in above )

( User can select input type, Temp. ranges by keys )

Temperature ranges

Fully configurable by front keys

 

Display type

4 digit LED

4 digit LCD

 

Display accuracy

+/- 0.1% of span

 

Output

4-20 mA DC in two wire loop

 

Analog output load capability

800Ω maximum

  Output accuracy

+/- 0.1% of span

 

Power supply

24 V DC ( 22.5 to 28 ) V DC

from two wire loop

 

Security

Single level Password protected


Ambient temperature

0 – 50° C.

 

Storage temperature

0 – 70° C.

 

Humidity

90% RH (non-condensing)

Enclosures

Weatherproof, Flameproof and all other standard types

 

Mounting

Head / Panel / Wall / Field / Dinrail / Eurocard


Dimensions

Optimum

 

*All config/calibration from front keys only

 
 
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)

872 - Universal Temp. Transm.

 

Enclosure / Mounting ( letter following 3 digits)

P - Weatherproof - Panel

W - Weatherproof - Wall

F - Flameproof - Wall / field

I - IP65 grade – wall / field

C - PCB card type

E - Weatherproof - Eurocard

S - Specials

 

Input type (Specified by the next digit / letter)

R - RTD Pt. 100

T - T/C

L - Linear inputs

U - Universal

Display Options (Specified by the next digit / letter)

0 - NIL

1 - 4 digit red LED

2 - LCD