MQ gas sensor correlation function against temperature and humidity

Posted on Thursday, July 6th, 2017 in sensors by DP


Davide Gironi writes:

We have taken a look at the MQ sersor in this post here.
As I said those sensor are electro-chemical. Accuracy of those sensor is not the best. Also they will react to many gases. It means that if you are trying to measure the ppm of a certain gas with this sensor, you will have false measurement values if any of the other gas that the sensor react to, changes.
Here I will “overengeneer” on this type of sensor, trying to correlate the MQ sensor readings to temperature and humidity too, even if this correlation to me is not prominent. The correlation formula I’ve found may be wrong, so let me know if there is something to fix here.

See the full post and more details on his blog,

This entry was posted on Thursday, July 6th, 2017 at 11:45 pm and is filed under sensors. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • KH: Using an alkaline coin cell down to 1.0V or under is a very bad idea anyway, unless you as the designer or manufacturer don't care...
  • KH: Farnell says TS1001 is no longer stocked. Not on RS. Digikey says it's obsolete. That said, there are a lot of nanoamp-class parts on sale...
  • Peter: Sunday--
  • Chris Brightly: Best of luck to all, including the wayward prototypers yet to post!
  • Wolfi: o/