JCB4 Portable Methane Detection Alarm suppliers [Introduction] JCB4 Portable Methane Detection Alarm Application: coal mine equipped with personal conduct underground gas measurement and detection of standing equipment; may be applied to damp, dark places such as dusty, detection of hydrocarbon Compounds flammable gas. l Portable Methane Detection Alarm Features ★ with a high degree of protection for harsh environments; ★ alarm indication has many forms: digital, sound and light, vibration, light bar; ★ alarm point can be adjusted by pressing a button; ★ You can choose to configure Combination charging rack; ★ Built-in advanced chip microcomputer; ★ Optional use of metal destroyed or leather protection; ★ sensors facilitate easy replacement; ★ time display and setting function; ★ battery voltage display function; ★ auto-zero and calibration function; Portable Methane Detection Alarm Specifications Ordering JCB4 (smart) measurement principle catalytic combustion sensor measuring range CH4: 0 ~ 4.00% CH4 time display: 24-hour measurement accuracy CH4:. ± 0 1% CH4 or ± 10% Resolution 0.01% CH4 alarm point can be adjusted to set the alarm time display can be set to 24-hour time system sound and light alarm multi-mode multi-level alarm sound and light alarm sound level 80dB alarm vibrating alert function battery voltage display with automatic zero calibration function Display and sound and light alarm large screen digital display highlighting charging more than 15 hours of continuous working time protection class IP65 Power supply 3.6V rechargeable battery temperature range Temperature 0 ~ 40 ℃ Humidity apply to very wet conditions Dimensions / Weight 100 (L) × 56 ( W) × 28 (H) mm/200g proof type ibdI (150 ℃) shockproof antistatic ABS chassis standard instrument host, charger, leather case, cover calibration, manual