Infrared Sensor (Hot Metal Detector) (Type OK.. and OS..)

for the detection of hot objects, also over great distances

What is an infrared sensor?
One that stays cool when things get hot: Infrared sensors detect hot objects anywhere that conventional proximity switches fail due to high ambient temperatures. The infrared radiation emitted from hot materials is registered by an optical system at the sensor. If the infrared radiation exceeds an individually set threshold, a switching signal is generated. The advantage: Reaction times of up to half a millisecond – also when detecting hot objects over great distances. Proxitron infrared sensors are extremely robust and maintenance-free. Our infrared sensors with optics from temperature resistant glass are therefore able to withstand harsh influences such as water vapour, dust, vibrations, radiant heat and high temperatures.
What task does an infrared sensor perform?
Proxitron offers a wide range of infrared sensors. This allows us to realise multiple viewing angles, response temperatures and installation positions for you. In addition to the standard version with integrated electronics, which is available with a cooling jacket housing for ambient temperatures of up to 200 degrees Celsius, Proxitron also offers versions with separate evaluation, fiber optic cables and optical systems that are able to withstand up to 600 degrees Celsius. An optional air connection cleans and protects the optical system in case of contamination. We employ our many years of experience with infrared sensors in meeting with your requirements – we are therefore happy to take on your toughest challenges.

Special features

  • shock and vibration-proof
  • extremely fast response characteristics
  • adjustable response time
  • for ambient temperatures up to + 600 °C
  • various operating voltages and switching outputs
  • large selection of construction types and connection variants
  • various electrical outputs
  • stainless steel housing
  • complete accessory range

Example application areas
Wire processing, hot rolling, pipe production, steel industry, glass production, foundries, system and machine construction, sheet metal processing, automotive industry, forging, pressing.


Piros compact

  • Response temperatures 250°C up to 900°C
  • Ambient temperature up to 75°C
  • robust stainless steel housing
  • Field of view 0.5°, 1°, 2°, 7°, 1°x15°, 2°x25°
  • wide range of accessories
  • AC or DC variants
  • Cable or plug variants

Piros Compact up to 200 °C

  • Response temperatures from 250 °C up to 900 °C
  • Ambient temperature up to 200 °C
  • robust stainless steel housing, cooled
  • Field of view 0.5°, 1°, 2°, 7°, 1°x15°, 2°x25°
  • optionally air purge unit
  • AC or DC variants
  • Cable or plug variants
  • wide range of accessories

Piros with optic and fiber cable (LLK)

  • Response temperatures 350 °C up to 900 °C
  • Ambient temperature up to 600 °C
  • Stainless steel housing or aluminium housing
  • Field of view 0.5°, 1,5°, 2°, 7°, 2° x 25°
  • Optionally air purge unit
  • AC or DC variants
  • Cable or plug variants
  • wide range of accessories


For more information, click on an image below to download a PDF

Capton Division