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Dräger Catalytic Ex-Sensors Sensors for Portable Gas Detectors

Dräger Catalytic Ex-Sensors

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Dräger Catalytic Ex-Sensors

The Draeger Sensor Catalytic Ex-Sensors measure multiple gases at the same time--combustible gases and vapors in the air.

Catalytic Ex-Sonsors

  • ​monitoring of explosive mixtures
  • high poisoning resistance to silicones and H2S
  • compatible with: X-am family
  • measuring range: lower explosion limit up to 100 vol.-%

Resistance to poisoning

DrägerSensors are robust and easy to handle, and with the DrägerSensor CatEx PR Technology, we have succeeded in developing particularly long-term stable catalytic Ex sensors. Hydrogen sulfide and silicones are known catalytic poisons which may be present themselves in the environment where explosive gases exist. Thanks to a new pellistor composition, the sensors are highly resistant to ‘poisoning’ from these substances.

Sensitivity to vapors

Unknown gas hazards and higher hydrocarbons pose a particular challenge to the display sensitivity of catalytic sensors. The new CatEx 125 PR and Smart CatEx (PR) sensors have such a sensitivity. The detection of all hydrocarbons (from methane to nonane) has been confirmed with a measurement certificate for the device series Dräger X-am® 1/2/5000 and Dräger X-am® 7000.

Optimised for extreme conditions

​The design of the new sensor CatEx 125 Mining PR makes it particularly impact-resistant and thus optimised for the harsh conditions in the mining industry.

From LEL to 100 % by vol.

​Our catalytic sensors are suitable for measurements from the lower explosion limit (LEL) to 100 % by vol.


Catalytic Ex-Sensors Product Information, en-us
Catalytic Ex-Sensors Product Information, en-us


Portable Gas Detection - Family Brochure, en
Portable Gas Detection - Family Brochure, en


DrägerSensor & Portable Instruments Handbook (5th Edition), en
DrägerSensor & Portable Instruments Handbook (5th Edition), en


Product Safety Information Sheet for DrägerSensors (non hazardous)

Sensors and substances

Dräger-Sensors for portable gas detectors can be used to measure a large number of hazardous substances. Check the different sensors by searching for a substance. Get in contact with our experts to get more information.

Search for substance

Please enter a substance

Product configurations

Utilise for 39 Substances

6 matching Sensor(s)

Get in touch with Dräger

Contact Us Image Safety Products

Draeger, Inc. – Safety

7256 S. Sam Houston W Pkwy., Suite 100
Houston, TX 77085