Gas Detection Sensors - Hansen

Hansen have a great range of Gas Sensors availabe. Please view the Hansen Gas Detection Brochure for more information.

Gas Sensors & Monitors


Hansen Technologies offers a complete line of industrial quality Gas Sensors and Monitors for refrigerants and other common gases. These state-of-the-art gas sensors utilize a range of sensing technologies to suit a given application. Hansen Gas Sensors are available in several configurations to meet various application requirements.

Hansen Gas Sensors are suitable for use in industrial refrigeration engine rooms, cold storage rooms, processing rooms, truck docks, and for relief valve vent lines. They are also suitable for use in supermarkets, and large institutional and commercial buildings. Typical gas detection applications include Ammonia, Carbon Dioxide, Hydrocarbons, HFCs, HCFCs and CFCs.

Hansen uses a wide variety of sensing technologies including electrochemical, semiconductor and infrared sensors to selectively detect most gases. These sensors continuously determine the level of gas present in an area. The analog outputs (4-20 mA or 0-10 V DC) can interface with nearly any existing monitor , computer or PLC controller. Sensors have built-in visual and audible alarms. An auxiliary one amp relay output is standard. A range of enclosures are offered to suit most applications. Testing and re-calibration procedures are simple.


  • High accuracy
  • Linear 4-20 mA or 0-10 V DC output
  • Audible alarm
  • Visual alarm
  • Power indicator
  • SPDT relay output
  • Low voltage power
  • CE approved

Sensor Information

 Electro Chemical Semi Conductor Infrafred Temperature
Range  -40ºC to 40ºC -40ºC to 50ºC -40ºC to 50ºC
Humidity* 0 to 95% 0 to 95% 0 to 95%
Sensor Life 2 to 3 Years 5 to 8 Years 8 to 10 Years

* models available for harsh environments (above 95% relative humidity)

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