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Catalytic Combustible Gas Sensor MC119

Summary:

Winsen Electronics, MC119 adopts catalytic combustion principle, and detects hydrogen, ethylene, gasoline,VOC such as alcohol, ketone, benzene. MC119 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.

Feature:

It has good sensitivity to methane in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc. The bridge output is linear, quick response, good repeatability and selectivity, good stability, excellent resistance to the interference of H₂S gas and organosilicone.

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Other Detector

Formaldehyde detector is an instrument for detecting formaldehyde. Generally, semiconductor sensors and electrochemical sensors are used to realize the rapid semi-quantification of formaldehyde in indoor air on the spot, which is characterized by simple structure, small size, intuitive,easy to carry and use.

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PARAMETER

Specification Product Size

Technical Data Sheet

Model No.		MC119
Sensor Type		Catalytic Type
Standard Encapsulation		Metal, Metallurgy powder mesh
Working voltage(V)		2.5±0.1
Working current(mA)		100±10
Sensitivity (mV)	1% H₂	20～40
	1% C₂H₂	40～90
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
Anti-explosion Mark		ExdibⅠ
Size（mm）		19×9.5×14

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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:

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Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.

Why Does the Sensitivity of the Semiconductor Sensor Reduce During Use?

There are five main reasons: 1) Organosilicon, sulfide, phosphide, chlorine (fluorine) compound, alkali metal, etc. will poison the sensor; 2) The power supply voltage of the sensor has changed; 3) The sensor has been used for too long (Exceeded service life); 4) The test gas concentration is too high; 5) The sensor is subjected to severe vibration or destructive external conditions.