MC227D 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.

Application

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.

Features

Bridge output voltage in linear
Fast response
Good repeatability and selectivity
Good stability and reliability
Resist H2S poisoning & organosilicone.

Specifications

Model		MC227D
Sensor type		Catalytic type
Standard encapsulation		Plastic base & metal cap
Working voltage(V)		2.5±0.1
Working current (mA)		150±10
Sensitivity (mV)	20%LEL CH4	12～35
	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
Life span		5 years

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

1 PC MC227D Catalytic Flammable Gas Sensor