Posted to News on 4th Sep 2008, 11:35
New range of high-temperature inductive proximity switches
Many manufacturing processes such as furnaces, steel plants, casting machines, engine control, foundries, heat treatment plants, plastic moulding machines, food processing and cooking and baking lines run at temperatures well above +70degC, at which most conventional feedback sensors begin to malfunction and fail. But Contrinex is introducing a new range of high-temperature inductive proximity switches that are designed specifically for use in such demanding conditions and will therefore help to reduce downtime.
Failures in high-temperature processes are particularly expensive and time-consuming because long delays in restarting often occur, as systems are required to cool before failed sensors can be replaced. This invariably results in the scrapping of valuable in-process product.
Based on proven technology, this new rugged inductive range is available in all standard sensor sizes from M8 up to M50 in both embeddable and non-embeddable formats. The range provides excellent long-term reliability even under difficult operating conditions and the compact, robust construction and stainless steel housings provide protection to IP67.
Depending on the device diameter, the operating distance is from 2-25mm in a range of models capable of withstanding operating temperatures from -25 up to +230degC. For all formats specified up to +180degC, the amplifier is included within the sensor housing, whereas the +230degC models have a separate in-line amplifier that is mounted on a Teflon cable 3m from the sensing head.
All versions include built-in protection against short circuits, reverse connection and voltage overload and are available as normally-open devices for all sizes and temperature options in NPN and PNP. They operate over a wide supply voltage from 10-30V DC and can switch a current of 150mA.
