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Infrared CH4 Industrial Sensors
Infrared CH4 Industrial Sensors

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Infrared CH4 Sensors
MH-740A infrared gas sensor adopt NDIR theory to detect concentration of CH4, which is good selection

Infrared CH4 Industrial Sensors

 

1. Application 

 

MH-740A sensor is a common intelligent sensor in small sized to detect CH4 in air taking 

advantages of non-dispersive infrared principle. It has the advantages of good selectivity, 

oxygen independence, stable performance and long life. MH-740A is an infrared gas sensor in 

small sized combining mature technology for infrared absorption detection and micro-machining, 

superior circuit design closely. The sensor can be widely used in detection for fire disaster, 

explosive gases. 

 

2. Product Mode & Explosion-proof Implication

Product Mode:MH-740A

Explosion Proof:ExmbIICT4

 

3. Specification

Power Supply

4.5~5.5V DC

Working Current

120mA

Interface Power

5V

Detected Range

0~5%vol(0~100%vol can be specified)

Resolution

1%FSD

Warm-up Time

90s

Response Time 

T90<30s

Repeatability

Zero < ±100ppm

SPAN <±500ppm

Long-time Drift

Zero < ±300ppm/month

SPAN < ±500ppm/month

Temperature

-40°C ~70°C

Humidity

0~95%RH

Life 

>5 year

Explosion-proof

ExdmIICT4

Protection Class

IP6

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