Principle Introduction:
MC226A adopts catalytic combustion principle, and its two arms of electric bridge consists of a test element and a compensate element. The resistance of the test element rises once it meets the combustible gases, in the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensate element, as a conference, has the function of compensating temperature and humidity.

Applications :
It is widely used in public places (not industrial occasion) to detect the concentration or leakage of combustible gases such as natural gas, LPG, coal gas.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Model		MC226A
Sensor Type		Catalytic Type
Standard Encapsulation		Plastic
Working voltage(V)		2.5±0.1
Working current(mA)		150±10
Sensitivity (mV)	20%LEL CH4	15～40
	20%LEL C3H8	10～30
Linearity		≤5%
Measuring range(%LEL)		0～100
Response Time (90%)		≤10s
Recovery Time (90%)		≤30s
Working Environment		-40～+70℃ <95%RH
Storage Environment		-20～+70℃ <95%RH
Lifespan		5 years

Reference Circuit :

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