Dräger Catalytic Bead Sensors, known as CatEx, utilize the proven pellistor (catalytic bead) detection principle—trusted for combustible gas detection, including hydrogen. Their advanced design ensures:
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Outstanding poison resistance: Custom pellistor alloys withstand exposure to silicon, hydrogen sulfide, and other sensor poisons, enhancing long-term stability.
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Fast response & broad range: From LEL detection to 100 vol%, CatEx sensors offer rapid alarm capability and wide-ranging sensitivity.
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Shock-resistant design: The CatEx SR variant tolerates impacts beyond standard industrial drops without requiring recalibration.
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Low operational cost: Durable design and long-term performance ensure minimized maintenance and re-calibration needs.
Available Variants & Specifications
Here’s a detailed breakdown of the CatEx variants, based on your image and Dräger’s documentation:
| Variant | Range | Key Features | Applications |
|---|---|---|---|
| Smart CatEx (PR) | 0–100 % LEL or 0–100 vol % CH₄ | Poison-resistant, fast response, multi-gas support | X-am 7000 series; general use |
| Smart CatEx (HC PR) | Same as above | High-concentration capability + poison resistance | High gas environments |
| Smart CatEx (FR PR) | Same as above | Flame-resistant housing for enhanced safety | Hazardous zones |
| CatEx SR | 0–100 % LEL / 0–5 vol % CH₄ | Shock-resistant, calibrated in <60s | Tough field operations |
| CatEx 125 PR / PR-Gas | 0–100 % LEL / 0–100 vol % CH₄ | Standard poison-resistant variant | X-am 2500/5000/8000; broad gas use |
| CatEx 125 Mining PR | Same as above | Impact-resistant for mining environments | Mining and rugged workflows |
Technical Specifications Highlights
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Measuring Principle: Double-Detector pellistor for drift compensation
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Detection Range: From LEL baseline detection up to 100 vol% methane
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Response Time: Fast T₅₀ and T₉₀, minimizing the delay between hazard detection and alarm
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Calibration: Quick fresh-air calibration (CatEx SR can recalibrate in ~60 seconds)
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Poison Resistance: Validated against siloxanes and H₂S for durable performance
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Cross-Sensitivity: Measures a wide range from methane to nonane, enabling versatile hazard detection
Ensure accurate combustible gas detection and workplace safety with Dräger CatEx Catalytic Bead Sensors. Robust, fast-acting, and built for extreme conditions—choose the variant that matches your environment.
Request a quote today or explore compatible sensors for your X-am or PacEx device lineup!
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