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Hot Metal Detector / Temperature switch
Hot Metal Detectors (HMD) from Proxitron detect the infrared radiation emitted by hot materials. The amount of infrared radiation depends on the object temperature. If the detected infrared radiation exceeds a value set in the Hot Metal Detector (response temperature), it delivers a switching signal. This is why hot metal detectors are often called temperature switches or infrared sensors. The fast response time of less than half a millisecond enables very fast process monitoring in steelworks, rolling mills or forging plants.
Temperature switches from Proxitron are characterised by their extremely robust and maintenance-free design. They can withstand the harshest environmental influences such as water vapour, dust, vibration, radiant heat and consistently high ambient temperatures of up to 600 °C for years.
Proxitron offers a wide range of infrared sensors. Using the main selection criteria, such as ambient temperature, response temperature, connection type and viewing angle, you can select the perfect temperature switch for your application in our comfortable sensor selector.
Specific characteristics
Extremely robust
Shock and vibration resistant
Wear and maintenance free
Very quick response times
Adjustable response temperature
For ambient temperatures up to +600 °C
Great selection of models and connection versions
Diverse electrical outputs
Stainless steel housing
Complete range of accessories
Extensive functions - this is where our OX series comes into operation
Our newest series of Hot Metal Detectors - the OX series – provides a previously unknown range of functions in only one device. The sensors not only can be parameterized easily due to the Teach-In function, furthermore we equipped the sensors with a lot more smart functions. Besides the standard function (fully free parameterizable outputs), you can also choose the offset function (different response- and switch-off temperatures are parameterizable). An alarm function supplies information of unsecure operating states and the jump function can react - independently of a fixed response temperature - to sudden temperature changes of the application. Equipped with a comfortable software interface, the sensors of the OX series fulfill the requests of the industry 4.0.
We remain loyal to our concept of facing high temperature environments always with the appropriate design. If the ambient temperature is not exceeding 75°C, a simple and cheap compact housing is enough. For ambient temperatures reaching 200°C we recommend the use of a compact equipment with water-cooling, and for increasingly higher temperatures, for example up to 290°C, a device with fibre optic cable and separate optic.
The ambient conditions in steelworks, rolling mills, wire plants and foundries poses a challenge that we can solve together. Dust, scales, soot, rolling emulsions, vapour and significant mechanical stress: our accessories range is an adequate task for our accessories.
This includes an extensive and almost indestructible protection system for the cables of the temperature switches as well as tailored air purge units to protect optics from dust, scales and water spray. For the alignment, mounting and field of view-reduction we offer accessories made of stainless steel, perfectly tailored to our sensors. Extremely robust and adjusted to your requirements.
