Manual Version: 1.6 Valid from: 2021-7-1 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 MQ316 Smell sensor Description The gas-sensitive material used in the MQ316 odor sensor is a semiconductor material with low conductivity in clean air. When there is a gas to be measured in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of the gas to be measured increases. Use a simple circuit to convert the change in conductivity into an output signal corresponding to the gas concentration . Features This product has high sensitivity to ethanol, hydrogen sulfide, and methyl mercaptan in...

Basic Test Circuit Note: The above picture shows the basic test circuit of MQ316 sensor. The sensor needs to apply 2 voltages: heater voltage (VH) and test voltage (VC). Among them, VH is used to provide a specific working temperature for the sensor, and it can be DC or AC power. VRL is the load resistance (RL) of the sensor in series On the voltage. VC is the test voltage for the load resistance RL, and a DC power supply is required. It is necessary to apply 2.0±0.2V to the sensor for 5~10 seconds before normal detection The high voltage to make the sensor stabilize and enter the working state...

Cautions 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 silicon bond, fixature, silicon latex, putty or plastic contain silicon environment. 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...

2.5 Vibration Continual vibration will result in sensors down-lead response then break. In transportation or assembling line, pneumatic screwdriver/ultrasonic welding machine can lead this vibration. 2.6 Concussion If sensors meet strong concussion, it may lead its lead wire disconnected. 2.7 Usage Conditions 2.7.1For sensor, handmade welding is optimal way. The welding conditions as follow:  Soldering flux: Rosin soldering flux contains least chlorine  homothermal soldering iron  Temperature：≤350℃  Time：less than 3 seconds If disobey the above using terms, sensors sensitivity will be reduced....