High-temperature inductive proximity switch

For demanding applications in high-temperature areas, inductive proximity detectors with good long-term reliability have become increasingly popular. Contrinex offers a series of embeddable and non-embeddable HT switches in sizes M8 to M50. The devices have operating distances from 2 to 25 mm, and are respectively suitable for applications up to 140°C, 150°C, 180°C and 230°C.
The executions for 140°C, 150°C and 180°C feature built-in professional amplifiers. Connections by means of a 2 m silicone or Teflon cable is standard. Other cable lengths and types are available on request.
For 230°C types, the amplifiers are built into an M12 stainless-steel housing, which is connected by means of a standard 2 m Teflon cable, and thus removed from the hot area. This cable carries a pure DC, rather than a high-frequency signal, and its length can thus be chosen freely, without having a negative influence on the switching behavior of the device, and without the need for adjustment. Connection of the amplifier is by means of a 2 m PUR cable.
All the usual protection functions, such as short-circuit, overload and voltage-reversal protection are built in. Furthermore, the devices feature good protection against environmental influences (IP 67).

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