BH-4A Portable Multi Gas Detector
BH-4A 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.
TAG: BH-4A Bosean portable gas detector O2 detector combustible gas detector
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.
*Large 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.
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Accuracy |
≦±5% F.S. |
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Response Time |
≦30s |
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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. |
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Working environment |
-20℃～50℃, ＜95%RH (no dew) |
| Alarm Type | low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm |
| Backlight | Automatically activated when working in poor lighting environment or the alarm sounding or the button is knobbed down. |
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Power Source |
DC3.7V Li-on battery, 1800mAh |
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Charging time |
6h~8h |
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Working time |
≧8h continuously (without alarming) |
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Gas Sensor Life |
2 years |
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Explosion-proof grade |
ExiaIICT3 |
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Protection Grade |
IP65 |
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Weight |
Appr. 400g (with battery) |
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Dimensions |
130mm×67mm×30mm(L × W × H) |
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Standard accessories |
Suit case packaging, 1pc; Charger, 1pc; Calibration cap, 1pc; Communications cable, 1pc; User manual, 1pc.
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TAG: BH-4A Bosean portable gas detector O2 detector combustible gas detector
| 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 |
TAG: BH-4A Bosean portable gas detector O2 detector combustible gas detector
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