Olimex 2015 mq gas and air quality sensors 1.
Mq gas sensors list.
To measure ppm using mq 135 sensor we need to look into the rs ro v s ppm graph taken from the mq135 datasheet.
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.
In industries these are used to detect the leakage of harmful gases.
When there is an increase in polluting gases the resistance of the gas sensor decreases along with that.
Various gas sensors are available in the market but the most commonly available series is the mq series.
Based on the concentration of the gas the sensor produces.
Mq series semiconductor gas sensor application gas leak detection for houses workshops commercial building fire safety detection system.
I also have 2 of these set up as analog sensors on my enviro phat connected pizero.
Introduction to gas sensor.
Methane butane lpg smoke.
The mq series of gas sensors are used to detect different gas forms.
Basically every mq sensors has one heater inside with an electro chemical sensor.
Some of the alternatives of the mq2 gas sensor are mq 6 m 306a aq 3 sensors.
Mq 4 methane ch 4 and natural gas.
Sensor detects heater voltage.
This sensor is also used for air quality monitoring gas leak alarm and for maintaining environmental standards in hospitals.
Like mine for example.
Mq 2 flammable gases such as lpg and propane.
Read the values of a mq sensor 2.
A gas sensor is a device which detects the presence or concentration of gases in the atmosphere.
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.
Various gasses like lpg carbon monoxide co methane smoke alcohol etc can be monitored using these sensors.
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.
Mq 5 lpg and methane.
Here s a not entirely comprehensive list of the mq gas sensors often seen being used in arduino smoke alarm or breathalyser projects.
Mq 6 lpg and methane.
Mq gas sensors list posted on 2018 06 24 edited on 2019 07 23 comments.
