NDIR Infrared sensors for CH4

NDIR Infrared Sensor for CH4 Infrared gas sensor detect 0~100%vol optional. Explosion Proof Resist to humdity Good selection

Infrared 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

NDIR Infrared sensors for CH4