TMD-20 Programmable rail-mount transmitter (DIN rail, Modbus-RTU)

Product description

Universal, programmable transmitter, with RS-485 interface and MODBUS-RTU protocol, designed for operation with temperature sensors and to mesure analogue standard signals used in industrial automation systems.

  • for use with temperature sensors:
    • RTD: Pt100 lub Ni100
    • thermocouples: J, K, N, S, R, T, B
  • standard signal measurement:
    • current 0÷20mA, 4÷20mA
    • voltage 0÷10V
  • RS485 interface and MODBUS-RTU communication protocol
  • up to 247 sensors on a common bus
  • measuring input galvanically isolated from the power supply and output
  • LED indication of communication process
  • for mounting on 35 mm wide rail, according to DIN EN 50022-35

Technical data


Type of sensor, measuring range programmable, see data sheet, table no.1
Maximum range, accuracy, thermal drift see data sheet, table no.1
Pt100 or Ni100 sensor connection 2, 3-wire, programmable
Cold junction compensation error <±1,0°C
Standard signals measurement given in Tab. 2
Processing accuracy given in Tab. 1, Tab. 2
Temperature drift < 0,01% of actual reading / °C
Response time < 0,1s
Averaging time < 0,3÷60 s (factory set 1 s)
Communication standard RS-485
Communication protocol MODBUS-RTU
Bus address 1 … 247
Transmision speed 9600, 19200 bit/s
Transmision parameters 8E1, 8O1, 8N1
Galvanic isolation 500 V AC
Power supply 12 … 36 V DC / 0,2 W
Ambient temperature 0 … +60 °C
Humidity < 90% without condensation
Dimensions (H x W x D) / weight 98 x 17,5 x 56,4 mm / ca. 50 g

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(+48) 22 720 31 80

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