Dräger Catalytic Ex-Sensors

High product quality, low operational costs: Thanks to DrägerSensor CatEx PR technology, our sensors are resistant to poisoning and particularly stable over the long-term. They also deliver fast response times for rapid warnings of gas hazards.

Catalytic Ex-Sensors

  • ​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.-%

Our own design

We develop the sensors with our own engineering knowledge. In this way, we can assure their quality and we know the measurements are accurate. This allows them to be fully utilised in combination with our full line of in-house developed Dräger gas detectors.

Durable and resistant against sensor poisons

Hydrogen sulphide and silicone are known catalytic poisons that may be present in environments where explosive gases can develop. Thanks to a new pellistor composition, the sensors are highly resistant to poisoning from these substances. The sensors are also lead-free and thereby adhere to Directive 2002/95/EG (Restriction of Hazardous Substances). The high resistance to poisoning leads to extraordinarily stability over the long-term and that ensures low operational costs.

Vapour sensitivity

Unknown gas hazards and higher hydrocarbons pose a particular challenge to the display sensitivity of catalytic sensors. The new CatEx PR sensors distinguish themselves through their sensitivity. The detection of all hydrocarbons (from methane to nonane) has been certified in a measurement performance certificate for the device series X-am® 1/2/5000, X-am 7000 and X-am 8000.

Rapid response times

A rapid warning for explosive gases and vapours is vital. The CatEx PR sensors' fast response times minimise the timespan between danger and warning.

From the LEL to 100 vol. %

Our catalytic sensors are suitable for measurements from the lower explosion limit to 100 vol. %.

The X-am 8000 features the option to automatically switch testing ranges, making it easier to read off results when monitoring for high methane concentrations: if the sensor measures values above 100% LEL, the display switches to the range of 0 to 100 vol. %.


Product Information: Dräger Catalytic Ex-Sensors (PDF)
Product Information: Dräger Catalytic Ex-Sensors (PDF)


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


Brochure: Dräger's Guide to Portable Gas Detection (PDF)
Brochure: Dräger's Guide to Portable Gas Detection (PDF)

Matter with a temperature above its boiling point is said to be a gas. With respect to a human environment (normal conditions), any substance with a boiling point below 20°C at normal pressure is a gas.


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.

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Product configurations

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5 matching Sensor(s)

Get in touch with Dräger

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Dräger Danmark A/S

​Lyskær 9
2730 Herlev

+45 44 50 00 00