CJY4/25B(A) Methane and Oxygen Detector

General The instrument adopts the electronic measuring device which is based on thermal catalysis principles and electrochemical principles and is provided with an embedded type micro-controller for intelligent control and a 4-digit digital tube for display. The instrument can detect concentrations of methane and oxygen simultaneously, and adopts the imported oxygen probe with high precision, good stability and long service life. The charger is provided with the function of automatic discharge and automatic protection. Main technical specifications 1. Measurement principles: catalytic combustion type sensor (CH4) and electrochemical sensor (O2) 2. Measured gas: CH4 and O2 3. Measuring mode: diffusion type measuring mode 8. Resolution: 0.01% CH4 and 0.1% VOL 9. Continuous operating time after being fully charged: the discharge time after being charged is more than 24 hours 10. Power supply: special and chargeable battery Ni-Mh1400 mAh, three nickel-metal hydride batteries 11. Temperature / humidity: 0 to 40% / ≤ 98% 12. Dimension / weight: 135 (L) × 50 (W) × 25 (H) mm / 200 g 13. Explosion-proof type: Eibdl (150 ) vibration protection and antistatic ABS case 14. Coal mine safety sign certificate number: MFA070062