Air Quality Gas Sensor
（
Model
：
MQ135
）
Manual
Version: 1.4
Valid from: 2015-03-10
Zhengzhou Winsen Electronics Technology Co., Ltd
Page 1: ...Air Quality Gas Sensor Model MQ135 Manual Version 1 4 Valid from 2015 03 10 Zhengzhou Winsen Electronics Technology Co Ltd...
Page 2: ...ance with the instructions If users disobey the terms or remove disassemble change the components inside of the sensor we shall not be responsible for the loss The specific such as color appearance si...
Page 3: ...s in wide range and has advantages such as long lifespan low cost and simple drive circuit etc Main Applications It is widely used in domestic gas alarm industrial gas alarm and portable gas detector...
Page 4: ...ensor Vc supplies the detect voltage to load resistance RL and it should adopts DC power Description of Sensor Characters Fig3 Typical Sensitivity Curve The ordinate is resistance ratio of the sensor...
Page 5: ...osed 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 sa...
Page 6: ...eriod sensors sensitive will be decreased 2 2 Used in high gas concentration No matter the sensor is electrified or not if it is placed in high gas concentration for long time sensors characteristic w...
Page 7: ...g the following conditions should be obey Soldering flux Rosin soldering flux contains least chlorine Speed 1 2 Meter Minute Warm up temperature 100 20 Welding temperature 250 10 One time pass wave cr...
