A gas sensor is a device which detects the presence or concentration of gases in the atmosphere.
Mq gas sensors list.
When there is an increase in polluting gases the resistance of the gas sensor decreases along with that.
This sensor is also used for air quality monitoring gas leak alarm and for maintaining environmental standards in hospitals.
Introduction to gas sensor.
Sensor detects heater voltage.
Mq 4 methane ch 4 and natural gas.
Some of the alternatives of the mq2 gas sensor are mq 6 m 306a aq 3 sensors.
Goal of the guide.
Mq 7 carbonic monoxide co and hydrogen h 2.
Basically every mq sensors has one heater inside with an electro chemical sensor.
In industries these are used to detect the leakage of harmful gases.
There are many types of gas sensors but the mq type gas sensors are commonly used and widely popular so will focus more on these types of sensors for this article.
You will find a list of the main sensors along with the gases and aerosols they detect the most as follows.
Read the values of a mq sensor 2.
Various gasses like lpg carbon monoxide co methane smoke alcohol etc can be monitored using these sensors.
Here s a not entirely comprehensive list of the mq gas sensors often seen being used in arduino smoke alarm or breathalyser projects.
Mq gas sensors list posted on 2018 06 24 edited on 2019 07 23 comments.
Methane butane lpg smoke.
I also have 2 of these set up as analog sensors on my enviro phat connected pizero.
Olimex 2015 mq gas and air quality sensors 1.
Like mine for example.
Various gas sensors are available in the market but the most commonly available series is the mq series.
Mq 135 gas sensor applies sno2 which has a higher resistance in the clear air as a gas sensing material.
Requirements 2 1 hardware 1 x gas or air quality sensor 1 x arduino or arduino like board 3 x male female jumper wires 1 x mini usb cable 1 x personal computer 2 2 software 1 x arduino ide 2 3 our setup 1 x sns mq2 1 x olimexino 328 3 x male.
To measure ppm using mq 135 sensor we need to look into the rs ro v s ppm graph taken from the mq135 datasheet.
They are best to smell gas in indoors at room temperature by connecting load resistor as variable one we can calibrate the sensor gas detection sensitivity more or less.
Mq series semiconductor gas sensor application gas leak detection for houses workshops commercial building fire safety detection system.
Mq 6 lpg and methane.
The mq series of gas sensors are used to detect different gas forms.
