CJR4/5 Methane Carbon Dioxide Tester Large Screen 4 Digit Number LED Display

CJR4/5 Measuring gas Methane (CH4), carbon dioxide (CO2) measuring principle Catalytic combustion sensor (CH4), infrared sensor (CO2) measuring range (0.00~4.00)%CH4 (0.00~5)×10-6CO measurement accuracy CH4 0.00~1.00 ±0.10 1.00 ~ 3.00 ± 10% of the true value 3.00~4.00 ±0.30 CO 0~20 ±2×10-6 >20~100 ±4×10-6 Over ± 5% of 100-500 measured value Over ± 6% of the measured value of 500-1000 Factory alarm point setting CH4:1.00% CO:24×10-6 Explosion proof type Mine intrinsic safety and flameproof type Explosion proof sign ExdibI Mb Temperature / humidity 0℃~40℃/≤98% Display mode Large screen 4-digit LED display Measurement method Diffusion measurement method Alarm point setting Full range adjustable Time display 24 hour time system can be set Alarm sound level intensity 80dB Visibility of alarm light >20m Protection level IP54 Continuous working time of instrument More than 10 hours Size / weight 116(L)×59(W)×29.5(H)mm/260g Battery 3.7V rechargeable lithium manganate battery, the battery is protected by protection plate, with over-current protection function Auxiliary function Battery voltage display function, power shortage alarm function, audible and visual alarm function Adjustable parameters Zero point adjustment, precision adjustment, alarm point adjustment, time adjustment and date adjustment Standard configuration Instrument host, standard gas cap, air pipe, leather cover, certificate, instruction 4, Standard configuration Host (including sensor and lithium battery) Gas cap Airway Charger Leather cover Certificate Operation manual (including coal safety and explosion proof certificate)