• Beijing Zetron Technology Co., Ltd
    Hello, I already used the equipment in an aluminum smelting plant in Mexico and I was surprised by the function of your company's laser device.
  • Beijing Zetron Technology Co., Ltd
    Good gas leak detection instrument !!! High accurate test values :D
Contact Person : Lisa Niu
Phone Number : +86 15699785629
Whatsapp : +8615699785629

Zetron BH-4A Portable Gas Leakage Detector Alarm Measurement O2 CO VOC

Place of Origin China
Brand Name Zetron
Certification CE
Model Number BH-4A
Minimum Order Quantity 1 set
Packaging Details 160*70*28mm
Delivery Time 1-10 work days
Payment Terms T/T, Western Union, MoneyGram, D/P, D/A, L/C
Supply Ability 1000 SET / week

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Whatsapp:0086 18588475571

Wechat: 0086 18588475571

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If you have any concern, we provide 24-hour online help.

Product Details
Gas Sensor Life 2 Years Accuracy ≦±5% F.S.
Response Time ≦30s Power DC3.7V Li-on Battery, 1800mAh
Exterior Dimensions 130mm×67mm×30mm(L × W × H) Power Source Appr. 400g (with Battery)
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Zetron portable gas leakage detector


Alarm portable gas leakage detector

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Product Description

BH-4A Portable Multi-gas Detector


BH-4A portable multi-gas detector could detect combustible gas, O2, and other two types of toxic gases continuously and simultaneously can protect the workers' life and avoid damage to the relevant equipment.




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.


Accuracy ≦±5% F.S.
Response Time ≦30s
Indication LCD displays real-time and system status; LED, audio, and vibration alerts for gas leakage, fault, and low voltage.
Sensor O2 /H2S / CO: plug-in electrochemical sensor; Combustible gas (LEL): plug-in catalytic combustion sensor.
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
Charging time 6h~8h
Working time ≧8h continuously (without alarm)
Protection Grade IP65
Weight Appr. 400g (with battery)
Dimensions 130mm×67mm×30mm(L × W × H)
Standard accessories Suit case packaging, 1pc; Charger, 1pc; Calibration cap, 1pc; Communications cable, 1pc; User manual, 1pc.
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
NO2 0-20ppm 1/0.1ppm 5ppm 10ppm
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
C2H4O 0-100ppm 1/0.1ppm 20ppm 50ppm
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 ranges are listed, if you need more information, please contact us.

Zetron BH-4A Portable Gas Leakage Detector Alarm Measurement O2 CO VOC 0

Tag: Portable Gas Detector, Diffusion Type Gas Alarm DetectorCO Gas Analyzer, Combustible Gas Leaks, mining industry, Underground Channels, Multiple gas alarm, OEM gas detector, Multi-Gas Detector, 4in1 gas alarm instrument, OEM/ODM service