Pepperl+Fuchs Process Automation Z964 2 Channel Zener Barrier with Analogue Output, 250 V max, 12mA max

P&F Dual Channel Zener Diode Barriers
Using a dual channel barrier impedes a direct grounding of the intrinsically safe circuit. The ground is only made in the event of a failure, if the zener diodes conduct. This circuit also suppresses influences of external circuits.