Manual Version: 1.6 Valid from: 2022-06-21 Zhengzhou Winsen Electronics Technology Co.,

Statement This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not...

Zhengzhou Winsen Electronics Technology Co.,Ltd MC109 Catalytic Flammable Gas Sensor Profile MC109 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 The bridge output is linear, quick response, good...

Zhengzhou Winsen Electronics Technology Co.,Ltd Sensitivity, response and recovery Output(mV) Time (s) Fig4. Response and recovery curve Changing of output signal at different temperature Output(mV) Temperature(℃) Fig5. Zero point at different temp. Temperature(℃) Fig6. Sensitivity at different temp. Changing of output signal at different humidity Output(mV) Humidity Fig7. Zero point at different humidity Humidity Fig8. Sensitivity at different humidity Email: [email protected]

Zhengzhou Winsen Electronics Technology Co.,Ltd Changing of output signal with different voltage supplying Output(mV) 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 one year storage, it need more than 48 hours. Output(mV) Time (weeks) Fig11. Sensitivity fluctuation Cautions 1 .Following conditions must be prohibited 1.1 Exposed to organic silicon...

Zhengzhou Winsen Electronics Technology Co.,Ltd 1.5 Freezing Do avoid icing on sensor’s surface, otherwise sensing material will be broken and lost sensitivity. 1.6 Applied higher voltage Applied voltage on sensor should not be higher than stipulated value, even if the sensor is not physically damaged or broken, it causes down-line or heater damaged, and bring on sensors’ sensitivity characteristic changed badly. 1.7 Pins connection When the sensor is connecting to the circuit, one of detection part pins and one of compensation part pins connects as the signal output. The other one of detection...