4 in 1 Multi gas Detector BH-4AS O2、CO、H2S、EX USB rechargeable Explosion-Proof

4 in 1 Multi gas Detector BH-4AS O2、CO、H2S、EX USB rechargeable Explosion-Proof   BH-4AS portable multi-gas detector could detect combustible gas, O2 and other two types toxic gases continuously and simultaneously. It is widely used in the area where explosion-proof is required or toxic gas leaks, like underground channels or mining industry, so as to protect the workers’ life and avoid damage on the relevant equipments.   INTRODUCTION Detecting gas: Combustible gas, H2S, CO, O2 *Natural diffusion sampling method and high-sensitivity sensor, with high sensitivity and repeatability. *32-bit built-in MCU, high reliability and self-adaptation ability. *Full functions, easy operation. *CSTN colorful LCD, more intuitionistic, abundant and clear indication. *Compact design, easy carrying. *High strength engineering plastics and compound anti-slippery rubber; high strength, water-proof, dust-proof and explosion-proof. *500pcs data records, can be contact with computer via software. Can print the data records, can store data records, can make the data analysis. Accuracy ≦±5% F.S. Response Time ≦30s Indication LCD displays real-time and system status;LED, audio and vibration alert for gas leakage, fault and low voltage. Sensor O2 /H2S / CO: plug-in electrochemical sensor Combustible gas (LEL): plug-in catalytic combustion sensor Alarm Type low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm Working environment -20℃～50℃, ＜95%RH (no dew) Power Source DC3.7V Li-on battery, 1800mAh Charging time 6h~8h Working time ≧8h continuously (without alarming) Resolution 0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX) Self-checking Function Self-checking Battery power, display, sensor, hardware failure Gas Sensor Life 2 years Explosion-proof grade ExiaIICT3 Protection Grade IP65 Weight Appr. 400g (with battery) Dimensions 130mm×67mm×30mm(L × W × H)   SPECIFICATIONS Model Range L-alarm H-alarm CO 0-1000ppm 35ppm 200ppm O2 0-30%vol 19.5%vol 23.5%vol H2 0-100%LEL 20%LEL 50%LEL H2S 0-100ppm 10ppm 20ppm CH4 0-100%LEL 20%LEL 50%LEL C2H4O 0-20ppm 10ppm 15ppm C2H4 0-100%LEL 20%LEL 50%LEL C3H8 0-100%LEL 20%LEL 50%LEL C2H5OH 0-100%LEL 20%LEL 50%LEL NH3 0-100ppm 25ppm 50ppm CL2 0-20ppm 5ppm 10ppm O3 0-20ppm 5ppm 10ppm SO2 0-100ppm 2ppm 5ppm PH3 0-20ppm 0.3ppm 5ppm CO2 0-50000ppm 1000ppm 2000ppm NO 0-250ppm 20ppm 50ppm NO2 0-20ppm 5ppm 10ppm HCN 0-500ppm 10ppm 20ppm HCL 0-50ppm 10ppm 20ppm CH2O 0-10ppm 2ppm 5ppm VOC 0-100ppm 20ppm 50ppm C6H6 0-100ppm 20ppm 50ppm Price Terms︰ FOB Shenzhen Payment Terms︰ TT/Western Union/Paypal Packing︰ Export carton Lead Time︰ 4 days Product Image