Mq Gas Sensor Wikipedia

Mq 135 gas sensor applies sno2 which has a higher resistance in the clear air as a gas sensing material.

Mq gas sensor wikipedia.

When there is an increase in polluting gases the resistance of the gas sensor decreases along with that. Mq2 is a metal oxide semiconductor type gas sensor. 4 1 please contact us by email skype wechat for technology support our response may be delay you can just leave your questions we will reply to you as soon as possible in working time. This sensor works on 5v dc voltage.

For detailed information about the mq 3 sensor please refer to the data sheet provided in resources section. A gas detector is a device that detects the presence of gases in an area often as part of a safety system. This type of equipment is used to detect a gas leak or other emissions and can interface with a control system so a process can be automatically shut down. The mq 7 is a carbon monoxide co sensor suitable for sensing co concentrations in the air.

To measure ppm using mq 135 sensor we need to look into the rs ro v s ppm graph taken from the mq135 datasheet. Mq 7 gas sensor more. It can detect co gas concentrations anywhere from 20 to 2000 ppm it make detection by method of cycle high and low temperature and detect co at low temperature it is widely used in domestic co gas leakage alarm industrial co gas alarm and portable co gas detector for details visit the datasheet. The output voltage from the gas sensor increases when the concentration of gas increases.

Please note that the best preheat time for the sensor is above 24 hours. It can detect gases in the concentration of range 200 to 10000ppm. Sensitivity can be adjusted by varying the potentiometer.