The ACT20M-CI-CO-ILP, MCZ CCC and WAS5 CCC LP are 1/2-channel passive isolators that are supplied via the input loop current. They are optionally available in 6 mm (ACT20M/ MCZ series) or 17.5 mm (WAS5 CCC LP) housings.
The input and output circuits are completely, electrically isolated from each other. The passive isolators are designed with 1 or 2 channels. International approvals (such as ATEX Zone 2, UL C1D2 and FM Div2) permit use in explosion-risk zones.
Passive isolators are used to electrically isolate normalised signals (from 0/4 to 20 mA).The modules get their power supply from the current loop on the input side. The power for signal transmission and supply comes from the active 0/4–20 mA signal. They have very low current consumption and can be used anywhere in the field where no suitable power supply is available.
These devices are used in a variety of application processes as signal isolators and signal multipliers. They can be used to eliminate measurement errors caused by differences in earth potentials.