4 in 1 Gas Detector BH-4S O2 EX H2S CO Four Alarm methods Gas leak Monitor

4 in 1 Gas Detector BH-4S O2 EX H2S CO Four Alarm methods Gas leak Monitor   BH-4S 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 * 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. Gas sampling method Natural diffusion Detecting gas Combustible gas, H2S, CO, O2 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. Working environment -20℃～50℃ for toxic gases -40℃～70℃ for Ex ＜95%RH (no dew) Power Source DC3.7V Li-on battery, 1800mAh Charging time 6h~8h Working time ≧8h continuously (without alarming) Gas Sensor Life 2 years Explosion-proof grade Ex ib IIB T3 Gb 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 0-20ppm 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