Afriso South Africa (Pty) Ltd
Capacitance overfill alarm systems according to WHG for corrosive media
The CNS 20 capacitance probes for electrically conducting and nonconducting media can be used in conjunction with the CapFox® ENT 20 Ex isolating amplifier as an overfill alarm system according to WHG. The PTFE partly insulated probe renders the unit particularly suitable for use with corrosive liquids. The system can also be used in hazardous areas zone 0 in conjunction with the CNS 20 Ex high-temperature probe.
Description CapFox® ENT 20 Ex The CapFox® ENT 20 Ex isolating amplifier consists of a switching amplifier and a voltage-free output relay. The control circuit is intrinsically safe (EEx ia II C). CNS 20 and CNS 20 Ex probes can be connected.
A green LED indicates mains “on“, a red LED indicates that the relay has responded. If a cable break or a short circuit occurs, the output relay de-energises, the red „fault“ LED lights up.
The isolating amplifier must be installed outside of the hazardous area.
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