Catalytic Gas Sensor （Model: MC114/ MC114C） Manual Version: 1.7 Valid from: 2022-06-21 Zhengzhou Winsen Electronics Technology Co., Lt

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MC114/ MC114C Catalytic Flammable Gas Sensor Profile MC114/ MC114C 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. Features It has good sensitivity to methane in wide range, and has advantages such as long...

Technical Parameters Model Sensor Type Standard Encapsulation Metal, Metallurgy powder mesh Working voltage(V) Working current(mA) Measuring range(%LEL) Working Environment Storage Environment Anti-explosion Mark Sensitivity, response and recovery Fig3. Sensitivity Curve Changing of output signal at different temperature Temp. Characteristic of zero point Fig5.Zero point at different temperature Fig4. Response and recovery curve Temp. Characteristic of sensitivity

Changing of output signal at different humidity Output(mV) Output(mV) Humidity Characteristic of zero point Humidity Characteristic of sensitivity Fig7.Zero point at different humidity Fig8. Sensitivity at different humidity Changing of output signal with different voltage supplying Output(mV) In Air Fig9. Zero point with different voltage Fig10. Sensitivity with different voltage Long-term Stability The drift in air per year is within ±2mV, in 1%CH4 is within ±2mV. For a short period storage (in 2 weeks), the sensor need be galvanical continuously for 8 hours to reach stability. For more than...

1.2 High Corrosive gas If the sensors are exposed to high concentration corrosive gas (such as H2S, SOX, Cl2, HCl etc.), it will not only result in corrosion of sensors structure, also it cause sincere sensitivity attenuation. 1.3 Alkali, Alkali metals salt, halogen pollution The sensors performance will be changed badly if sensors be sprayed polluted by alkali metals salt especially brine, or be exposed to halogen such as fluorine. 1.4 Touch water Sensitivity of the sensors will be reduced when spattered or dipped in water. 1.5 Freezing Do avoid icing on sensor’s surface, otherwise sensing material...