Catalytic Flammable Gas Sensor (Model: MC21B) Manual Version: 1.1 Valid from: 2022-12-7 Zhengzhou Winsen Electronic Technology Co., Ltd

Catalytic Sensor Series 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...

Catalytic Sensor Series MC21B Catalytic Flammable Gas Sensor Product description: MC21B 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. conference, temperature and humidity. Characteristics: Bridge output voltage in linear; Fast response; Good repeatability and selectivity; Stable and reliable; Resist...

Catalytic Sensor Series Basic Circuit Bridge output + Fig2. Basic Test Circuit Sensor Characteristics Description 140 output voltage/mV output voltage/mV Fig4. Response and Recovery Curve Sensitivity SensitivityTemp. Tem. Curve(RH: Curve (RH:60%) 60%) Fig5. Zero point at different temp. Fig6. Sensitivity at different temp. output voltage/mV ZeroPoint PointTemp. Tem. Curve (RH: 60%) Zero Curve(RH: Email: [email protected] Leading gas sensing solutions supplier

Catalytic Sensor Series Zero Curve25℃) (T: 25℃) ZeroPoint PointHumidity Hum. Curve(T: Fig7. Zero point at different humidity Zero Point Voltage Curve Sensitivity Curve 25℃) (T: 25℃) SensitivityHumidity Hum. Curve(T: Fig8. Sensitivity at different humidity Sensitivity Voltage Curve In 20%LEL CH4 Fig9. Zero Drift with different voltage Fig10. Sensitivity with different voltage Circuit 1. Following conditions must be prohibited 1.1 Exposed to organic silicon steam Sensing material will lose sensitivity and never recover if the sensor absorbs organic silicon steam. Sensors must avoid exposing to...

Catalytic Sensor Series characteristic will be affected. If lighter gas sprays the sensor, it will cause extremely damage. 2.3 Long time storage The sensors resistance will drift reversibly if it’s stored for long time without electrify, this drift is related with storage conditions. Sensors should be stored in airproof bag without volatile silicon compound. For the sensors with long time storage but no electrify, they need long galvanical aging time for stability before using. The suggested aging time is 24 hours at least if the storage time is more than half an year. 2.4 Long time exposed to...