BH-4S Multi-Gas Detector Ex, CO, H2S, O2 (4 em 1)

Operating & Storage Environment

Temperature: -20℃~55℃ (-4F~122F)

Humidity: 5%-95% (Relative humidity non-condensing)

Pressure: 95~110kPa

Sampling method

Diffusion type

Detecting Range

CO: 0~1000ppm

H2S:0~100 PPM

O2: 0~30%vol

Combustible Explosive Gas (Ex / LEL / CH4): 0~100%LEL

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

Resolution

0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX)

Accuracy

3% F.S

Response time

10s

Repeatability

1%

Zero drift

1%

Display

Alphanumeric large LCD displays the real time gas concentration and alarm stage

Backlight

Automatically activated when working in poor lighting environment or the alarm sounding or the button is knobbed down.

Self-checking Function

Self-checking Battery power, display, sensor, hardware failure

Explosion-proof

EXiaIICT4

Protection grade

IP65

Power Supply

Rechargeable lithium battery

Weight

400g

Dimensions

145x69x28mm（L×W×H）