MH-440D NDIR Infrared CH4 Sensor

Industrial NDIR Infrared CH4 Sensor

Applications :

*Widely used for HVAC refrigeration, air monitoring indoor, industrial-process control and safety protection, agriculture and animal husbandry.

Product Advantages:

*High sensitivity, high resolution, low power consumption
*Output method: UART, analog voltage signal
*Temperature compensation, excellent linear output
*Excellent stability, Long lifespan
*Anti-poisons, anti-vapor interference
*Can replace catalytic type gas sensor directly

Product Description:

MH-440D infrared gas sensor is a miniature universal intelligent sensor, which adopts NDIR theory to detect concentration of CH4 in air and has good selectivity, stable performance, long life, also is independent of Oxygen. The inside temperature sensor could be used for temperature compensation. This miniature infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, micro machine workout and superior circuit design. It is convenient in use and also instead of catalytic component directly, widely used in various occasions with flammable and explosion hazard gas.

Technical Parameters:

Detection Gas	Methane（CH4）
Working Voltage	3.6~5V DC
Average Current	＜85mA
Interface Level	3.0V
Detection range	0~10%vol(selectable, refer fig2.)
Output Signal	UART
Output Signal	0.4~2V DC
Warm-up time	3 min
Response time	T90<30s
Working Temperature	-20°C ~ 60°C
Working Humidity	0~95%RH(no condensation)
Sizes	Φ20×21.4mm
Weight	35g
Lifetime	>5 years
Defense Grade	IP54