The 1-channel Ex-area temperature measuring amplifier IM34-11EX-I is designed to evaluate the temperature-dependent changes of

Ni100/Pt100 RTDs, thermocouples types B,

E, J, K, L, N, R, S and T or low voltages in a

range of -100…+160 mV and to output them

as temperature-linear current signals 0/4…20

mA.

Alternatively, Ni100/Pt100 RTDs in 2, 3 or 4-

wire technology can also be operated at the

input circuit of the measuring amplifier. The

Ni100/Pt100 input can either be used as external cold junction compensation for the thermocouple or as independent measuring input.

The following settings are available:

■ Type of probe

■ Connection of the Ni100/Pt100 resistor in

2, 3 or 4-wire technology

■ Measuring range, start -100…- 1 °C in 1-K

steps, 0…990 °C in 10-K steps

■ Measuring range, end 0…1990 °C in 10-K

steps

■ Input circuit monitoring for wire-break

■ Behaviour of the current output in case of

errors in the input circuit: 0 or > 22 mA

■ Internal or external cold junction compensation

The signals are transformed according to ITS

90/IEC 584 for thermocouples and according

to IEC 751 for Pt100 RTDs and provided temperature linear at the current output.

■ Input for Pt100/ Ni100 resistors, thermocouples and millivolt signals in 2, 3 or 4-

wire technology

■ Output circuit: 0/4…20 mA

■ Upper and lower limit adjustable via rotary

coding switch

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ ATEX, IECEx, CFMUS, UL, TR CU, INMETRO, CCOE, NEPSI, KOSHA

■ Installation in zone 2