Process Transmitter With RS-485 Interface

Model Wise Description

PTX-3000-U - Process Transmitter with universal input  (8 user selectable)

PTX-3000-F  - Process Transmitter with single fixed  input

PTX-3000-T  - Process Transmitter with two same  input

Technical Specification

Input  Sensor

J,K,R,S,B thermocouple  or RTD (Pt-100)  or mV, mA signal (Input type  not listed here can also be provided)

Range

Full range of the selected input desired measuring range can be chosen from range selection table..

Accuracy

Software linearized to +/-1 ^oC for thermocouple input and +/-0.1^oC for Pt-100 input.

For Voltage and Current the accuracy is absolute to the input.

Power Supply

24VDC +/- 10% @ 150mA

Current Output 1

4-20mA proportional to the specified range of the user selected input. (12 bit resolution). 2 wire

Current Output 2

4-20mA proportional to the specified range of the second specified input. (12 bit resolution).  For PTX-3000-T

Digital Serial Output

Isolated 2 wire RS485 on MODBUS RTU protocol in SLAVE mode

Isolation

4-20mA and RS485 outputs are isolated from DC Power supply.

Isolation voltage > 1.5KV DC.

Loop Resistance

RLmax = 400 Ohms -  for each output.

Display

4 digit - 0.3 red seven segment LED .

4 digit each for PTX-3000-T

Connection

2 or 3 wire for sensor input, 2 wire for DC supply and

2 x 4-20mA for current outputs, 2 wire for RS-485 outputs.

Cable Entry

Through suitable size gland for supply and input/output.

Enclosure (Size)

ABS plastic IP-65 (120 x 80 x 55) mm.

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