Question about Ozone Gas Sensor 12-Bit (MQ131) measurement

Bhaskar · March 1, 2019, 2:18am

Hi,
i will recommend trying this code

empierre/arduino/blob/master/AirQuality-Multiple_Gas_Sensor1_4.ino

 /*
  Arduino Multiple Air Quality Sensors

  connect the sensor as follows when standalone:

  A H A   >>> 5V
  B	  >>> A0
  H       >>> GND
  B       >>> 10K/20K ohm >>> GND
  
  Contribution: epierre
  Based on David Gironi http://davidegironi.blogspot.fr/2014/01/cheap-co2-meter-using-mq135-sensor-with.html
  
  Precaution:
     The gasses detected by these gas sensors can be deadly in high concentrations. Always be careful to perform gas tests in well ventilated areas.
 
  Note:
     THESE GAS SENSOR MODULES ARE NOT DESIGNED FOR OR APPROVED FOR ANY APPLICATION INVOLVING HEALTH OR HUMAN SAFETY. THESE GAS SENSOR MODULES ARE FOR EXPERIMENTAL PURPOSES ONLY.

  License: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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or

The RL vale on the board is 10K.