Normalized active voltage or current signals

are transmitted galvanically isolated from the

Ex area to the non-Ex area via the 1-channel

analog signal isolator IM31-12EX-I. The signal

is duplicated and provided at both outputs.

The device is equipped with one input circuit

of 0/2…10 V or 0/4…20 mA and two short-circuit proof output circuits of 0/4…20 mA.

The transmission characteristic is adjusted via

a DIP switch on the front. In switch position

1:1 the input signals are transmitted without

interference and made available at the outputs in the non-Ex area. In LZ switch position, a dead-zero signal at the input (0…10 V

or 0…20 mA) is converted and provided as a

live-zero signal at the output (4…20 mA).

A green LED indicates operational readiness.

■ Transmission of normalized analog signals

from the Ex area to the non-Ex area

■ Input circuit: 0/2…10 V or 0/4…20 mA

■ Output circuit: 2 x 0/4 0…20 mA

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ ATEX, IECEx, UL, CFMUS, TR CU, NEPSI,

KOSHA

■ Installation in zone 2