Catalytic Ex sensor for the monitoring of combustible gas mixtures or vapors in the ambient air. Standard calibration with Methane. Suitable for the Dräger X-am 2500, Dräger X-am 5000 and Dräger X-am 3500 and Dräger X-am 8000 instruments. Measuring range: 0 - 100 % LEL 0 - 100 % vol.% CH4 for X-am 5000 and X-am 8000 (full range mode for X-am 8000)