BH-4AS Portable Multi-gas Detector

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. 


TAG:   BH-4AS Bosean O2 gas detector combustible gas detector co detector
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.

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. 

Sensor

O2 /H2S / CO: plug-in electrochemical sensor

Combustible gas (LEL): plug-in catalytic combustion sensor

Alarm Type low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm

Working environment

-20℃~50℃, <95%RH (no dew)

Power Source

DC3.7V Li-on battery, 1800mAh

Charging time

6h~8h

Working time

≧8h continuously (without alarming)

Resolution 0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX)
Self-checking Function Self-checking Battery power, display, sensor, hardware failure

Gas Sensor Life

2 years

Explosion-proof grade

ExiaIICT3

Protection Grade

IP65

Weight

Appr. 400g (with battery)

Dimensions

130mm×67mm×30mm(L × W × H)

 


TAG:   BH-4AS Bosean O2 gas detector combustible gas detector co detector
Specifications
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Model</td>
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Range</td>
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L-alarm</td>
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H-alarm</td>
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CO</td>
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0-1000ppm</td>
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35ppm</td>
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200ppm</td>
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O2</td>
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0-30%vol</td>
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19.5%vol</td>
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23.5%vol</td>
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H2</td>
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0-100%LEL</td>
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20%LEL</td>
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50%LEL</td>
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H2S</td>
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0-100ppm</td>
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10ppm</td>
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20ppm</td>
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CH4</td>
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0-100%LEL</td>
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20%LEL</td>
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50%LEL</td>
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C2H4O</td>
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0-20ppm</td>
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10ppm</td>
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15ppm</td>
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C2H4</td>
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0-100%LEL</td>
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20%LEL</td>
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50%LEL</td>
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C3H8</td>
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0-100%LEL</td>
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20%LEL</td>
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50%LEL</td>
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C2H5OH</td>
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0-100%LEL</td>
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20%LEL</td>
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50%LEL</td>
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NH3</td>
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0-100ppm</td>
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25ppm</td>
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50ppm</td>
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CL2</td>
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0-20ppm</td>
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5ppm</td>
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10ppm</td>
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O3</td>
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0-20ppm</td>
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5ppm</td>
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10ppm</td>
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SO2</td>
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0-100ppm</td>
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2ppm</td>
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5ppm</td>
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PH3</td>
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0-20ppm</td>
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0.3ppm</td>
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5ppm</td>
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CO2</td>
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0-50000ppm</td>
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1000ppm</td>
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2000ppm</td>
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NO</td>
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0-250ppm</td>
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20ppm</td>
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50ppm</td>
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NO2</td>
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0-20ppm</td>
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5ppm</td>
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10ppm</td>
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HCN</td>
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0-500ppm</td>
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10ppm</td>
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20ppm</td>
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HCL</td>
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0-50ppm</td>
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10ppm</td>
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20ppm</td>
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CH2O</td>
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0-10ppm</td>
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2ppm</td>
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5ppm</td>
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VOC</td>
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0-100ppm</td>
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20ppm</td>
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50ppm</td>
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C6H6</td>
<td class="et3" height="20" style="font-size: 11pt; text-align: center; border-width: 0.5pt; border-color: rgb(0, 0, 0); height: 15.03pt; width: 119.28pt;" width="159" x:str="">
0-100ppm</td>
<td class="et3" height="20" style="font-size: 11pt; text-align: center; border-width: 0.5pt; border-color: rgb(0, 0, 0); height: 15.03pt; width: 99.78pt;" width="133" x:str="">
20ppm</td>
<td class="et3" height="20" style="font-size: 11pt; text-align: center; border-width: 0.5pt; border-color: rgb(0, 0, 0); height: 15.03pt; width: 103.53pt;" width="138" x:str="">
50ppm</td>
</tr>
</tbody>
</table>
<p>
&nbsp;</p>

TAG:   BH-4AS Bosean O2 gas detector combustible gas detector co detector
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