ATEX approved pulse isolator module, for NAMUR sensors and switch inputs, single or dual channel, SIL 2 certified, programmed via detachable front programming unit 4501. With relay or NPN outputs. DIN rail mounting, power supply 19.2-31.2 VDC, input range 0-5KHz, output 0-20Hz. tHE 9202B can be mounted in the safe area or in zone 2 / Cl. 1 div. 2 and receive signals from zone 0, 1, 2 and zone 20, 21, 22 including mining ...