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.
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Accuracy
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≦±5% F.S.
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Response Time
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≦30s
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Indication
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LCD displays real-time and system status;LED, audio and vibration alert for gas leakage, fault and low voltage.
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Sensor
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O2 /H2S / CO: plug-in electrochemical sensor
Combustible gas (LEL): plug-in catalytic combustion sensor
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Alarm Type
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low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm
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Working environment
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-20℃～50℃, ＜95%RH (no dew)
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Power Source
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DC3.7V Li-on battery, 1800mAh
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Charging time
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6h~8h
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Working time
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≧8h continuously (without alarming)
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Resolution
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0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX)
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Self-checking Function
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Self-checking Battery power, display, sensor, hardware failure
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Gas Sensor Life
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2 years
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Explosion-proof grade
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ExiaIICT3
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Protection Grade
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IP65
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Weight
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Appr. 400g (with battery)
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Dimensions
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130mm×67mm×30mm(L × W × H)
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SPECIFICATIONS
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Model
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Range
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L-alarm
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H-alarm
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CO
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0-1000ppm
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35ppm
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200ppm
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O2
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0-30%vol
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19.5%vol
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23.5%vol
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H2
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0-100%LEL
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20%LEL
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50%LEL
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H2S
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0-100ppm
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10ppm
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20ppm
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CH4
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0-100%LEL
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20%LEL
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50%LEL
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C2H4O
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0-20ppm
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10ppm
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15ppm
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C2H4
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0-100%LEL
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20%LEL
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50%LEL
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C3H8
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0-100%LEL
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20%LEL
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50%LEL
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C2H5OH
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0-100%LEL
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20%LEL
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50%LEL
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NH3
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0-100ppm
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25ppm
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50ppm
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CL2
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0-20ppm
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5ppm
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10ppm
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O3
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0-20ppm
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5ppm
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10ppm
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SO2
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0-100ppm
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2ppm
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5ppm
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PH3
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0-20ppm
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0.3ppm
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5ppm
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CO2
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0-50000ppm
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1000ppm
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2000ppm
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NO
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0-250ppm
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20ppm
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50ppm
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NO2
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0-20ppm
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5ppm
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10ppm
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HCN
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0-500ppm
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10ppm
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20ppm
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HCL
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0-50ppm
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10ppm
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20ppm
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CH2O
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0-10ppm
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2ppm
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5ppm
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VOC
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0-100ppm
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20ppm
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50ppm
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C6H6
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0-100ppm
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20ppm
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50ppm
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