Four-in-one gas detector for mine Multi-gas detector Model: CD4 Product introduction: Simultaneous detection and display of methane (CH4), carbon monoxide (CO), oxygen concentration (O2), hydrogen sulfide (H2S) Applicable places: petrochemical, coal, metallurgy, chemical, municipal gas and other places on-site testing Product features : ◆ Highly intelligent technology, easy to operate, stable and reliable. ◆ Alarm point can be set according to user requirements. ◆ two sound and light alarm function. ◆ High-resolution LCD ( LCD ) display. ◆ dynamic background light function, alarm vibration function (optional). ◆ Battery voltage indication. Technical indicators: Ordering model CD4 Measuring gas Methane ( CH4 ), Carbon Monoxide ( CO ) Oxygen ( O2 ), Hydrogen Sulfide ( H2S ) Measuring principle Catalytic combustion sensor ( CH4 ) Electrochemical sensors ( CO , O2 , H2S ) measurement method Diffusion measurement method Measuring range CH4 : 0~4.00%CH4 O2 : 0~25.0%VOL CO : 0~1000ppm H2S : 0~100ppm measurement accuracy CH4 : ±10% , O2 : ±0.7%VOL CO : ±5% , H2S : ±5% Alarm point settings Full range adjustable Battery charge display Display battery level in real time Display and sound and light alarm Highlight digital display, alarm sound level 80dB Resolution CH4 : 0.01%CH4 , O2 : 0.1%VOL CO : 1ppm , H2S : 1ppm Full charge continuous working time More than 12 hours power supply 3.6V rechargeable lithium battery Temperature / humidity 0~40 °C / ≤98 % Size / weight 105 ( L ) ×56 ( W ) ×28 ( H ) mm/250g Explosion-proof type ibdI (150 °C ) Shockproof Antistatic ABS Case Standard configuration Host, charger, leather case, manual, qualified product, warranty card Automatic zeroing and calibration Background light display Honda Civic Grille,Honda Civic Front Grill,Civic Front Grill,Honda Civic Type R Grill Danyang Weisheng Automotive Technology Co., Ltd , https://www.dywizsinparts.com