Product overview combustible gas, hydrogen sulfide and oxygen sensors can be widely used in metallurgy, petroleum, petrochemical, chemical, chemical, shipbuilding and other industries. The instrument adopts flameproof design, 4 ~ 20mA standard signal output, can be transmitted remotely and can directly enter the DCS system. The detection sensor has the characteristics of high sensitivity, rapid response, long service life and short polarization time, and is at the leading level of similar products in China. Working principle Infrared gas sensor uses non dispersive infrared (NDIR) principle to detect hydrocarbon gas in air. It has good selectivity, no oxygen dependence, stable performance and long service life. Built in temperature sensor for temperature compensation. The sensor is easy to use and is widely used in various occasions where combustible and explosive gases exist. technical parameters of combustible gas sensor 1. Detection method: diffusion type 2. Working mode: fixed long-term continuous work 3. Detection gas: combustible gas in air ex 4. Range: 0 ~ 100% LEL 5. Accuracy: ± 5% F.S 6. Minimum reading: 0.1% LEL 7. Response time: ＜ 30 seconds 8. Sensor type: catalytic combustion type, oxygen and hydrogen sulfide gas are electrochemical type 9. Working voltage: 10 ~ 30V DC 10. Working current: combustible gas ＜ 160mA (max) 11. Output signal: three wire system 4 ~ 20mA standard signal output 12. Shell material: die cast aluminum shell 13. Overall dimension: 183 × one hundred and forty-three × 107mm (display type) one hundred and eighty-three × one hundred and forty-three × 93mm (no display type) 14. Transmission cable: three core barrier cable, sectional area 3 × 1.5mm 15. Transmission distance: ＜ 1000M 16. Protection grade: IP66 17. Operating temperature: - 20 ~ 55 ℃ (special requirements are determined according to needs) 18. Installation method: wall type, pipe type 19. Weight: with display ≤ 1.5kg, without display ≤ 1.2kg 20. Explosion proof type: Flameproof 21. Explosion proof grade: ex D Ⅱ C T6 and ex IA Ⅱ C T6 22. Inlet: Hexagon lock nut
