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.
We provide gas detector OEM/ODM service.
TAG: BH-4A Bosean portable gas detector O2 detector combustible gas detector gas detector oem
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 gas detector oem
| Model | Range | Resolution | L-alarm | H-alarm |
| CO | 0-1000ppm | 1ppm | 50ppm | 150ppm |
| O2 | 0-30%vol | 0.1%vol | 19.5%vol | 23.5%vol |
| H2 | 0-1000ppm | 1ppm | 50ppm | 150ppm |
| H2S | 0-100ppm | 0.1ppm | 10ppm | 20ppm |
| CH4 | 0-100%LEL | 1%lel | 20%LEL | 50%LEL |
| C2H4O | 0-100ppm | 1/0.1ppm | 20ppm | 50ppm |
| EX | 0-100%LEL | 1%lel/1%vol | 20%LEL | 50%LEL |
| C3H8 | 0-100%LEL | 1%lel/1%vol | 20%LEL | 50%LEL |
| C2H5OH | 0-100%LEL | 1%lel/1%vol | 20%LEL | 50%LEL |
| NH3 | 0-100ppm | 0.1/1ppm | 20ppm | 50ppm |
| CL2 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| O3 | 0-10ppm | 0.1ppm | 2ppm | 5ppm |
| SO2 | 0-20ppm | 0.1/1ppm | 5ppm | 10ppm |
| PH3 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| CO2 | 0-5000ppm | 1ppm/0.1%vol | 1000ppm | 2000ppm |
| NO | 0-250ppm | 1ppm | 50ppm | 150ppm |
| NO2 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| HCN | 0-50ppm | 0.1/0.01ppm | 10ppm | 20ppm |
| HCL | 0-20ppm | 0.001/0.1ppm | 5ppm | 10ppm |
| CH2O | 0-20ppm | 1/0.1ppm | 5ppm | 10ppm |
| HF | 0-100ppm | 0.01/0.1ppm | 2ppm | 5ppm |
| C7H8/C8H10 | 0-20ppm | 0.01/0.1ppm | 5ppm | 10ppm |
Note: Not all gases and range are listed, if you need more information, please contact us.
TAG: BH-4A Bosean portable gas detector O2 detector combustible gas detector gas detector oem
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