MH-T7042A is a universal type intelligent sensor to detect CH4 gas, taking advantage of non-dispersive infrared (NDIR) principle. With high selectivity, no oxygen dependence, high performance and long lifespan features, MH-T7042A also has built-in temperature compensation feature. MH-T7042A is a compact and high-performance sensor based on infrared absorption of gas detection technology, micro-machining and sophisticated circuit design.

Application

Widely used for industrial field instrumentation, industrial-process control and safety protection

Features

High sensitivity, high resolution, low power consumption
Output method: IIC, analog voltage signal, etc.
Quick response
Temperature compensation, excellent linear output
Excellent stability, Long lifespan
Anti-poisons, anti-vapor interference
Detect combustible gas concentration matching with flame-proof marked detector in area 1&2 explosive environments which mix of ⅡA, ⅡB, ⅡC and T1-T6 flammable gases, vapors and air

Specifications

Product Model	MH-T7042A
Gas Detected	Combustible gas (see Table2)
Working Voltage	4.5~5.5V DC
Average Current	< 100mA
Interface Level	3.3V
Measurement Range	0~100%VOL optional (table 2)
Output Signal	UART
Warm-up Time	<2minutes
Response Time	T90 < 30s
Working Temperature	-40℃ ~ 70℃
Working Humidity	0 to 95%RH, non-condensing
Dimension	Φ51×65mm
Weight	450g
Lifespan	>5 years
Explosion-proof sign	Ex db ⅡC T6 Gb
Protection Grade	IP65

Table 2

Gas Name	Molecular Formula	Detection Range	Resolution	Precision	Note
Methane	CH4	0-5% Vol	0.01% Vol	0~50% FS (±3%FS) 50%~100% FS (±5%FS)	With Temperature compensation
Methane	CH4	0-10% Vol	0.01% Vol
Methane	CH4	0-100% Vol	0.1% Vol
Propane	C3H8	0-2.2% Vol	0.01% Vol
Chloromethane	CH3CL	0-8.1% Vol	0.01% Vol
Acetylene	C2H2	0-2.3% Vol	0.02% Vol
Ethane	CH3CH3	0-3.0% Vol	0.03% Vol
Isobutene	C4H10	0-1.8% Vol	0.018% Vol
Gasoline	C3-C12	0-1.1% Vol	0.01% Vol	0~50% FS (±5%FS) 50%~100% FS (±10%FS)	No Temperature compensation
Methanol	CH3OH	0-5.5% Vol	0.06% Vol
Dichloromethane	CH2CL2	0-15% Vol	0.15% Vol
Toluene	C7H8	0-1.2% Vol	0.012% Vol
Alcohol	C2H5OH	0-3.3% Vol	0.033% Vol
Oxirane	C2H4O	0-3.0% Vol	0.03% Vol
Acetic acid	CH3COOH	0-4.0% Vol	0.04% Vol
Ethyl acetate	CH3COOC2H5	0-2.0% Vol	0.02% Vol

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

1 PC MH-T7042A Infrared CH4 Gas Sensor