Does anybody have experience with integrating gas or air quality sensors with arduino (e.g., figaro sensors, etc.)? There are several tutorials and examples online, but almost all of them deal with reading analog voltage values from the sensor (raw output). My main concern is on how to translate these values into ppm, or how to deal with calibration issues, etc.
The usage and calibration can be a little tricky. There is some very good application
information on the e2v website. Checkout "Application Note 2 Frequently Asked Questions for MiCS Gas Sensors" at http://tinyurl.com/mfdade
(* jcl *)
thanks for the link, it does provide some information. However I was wondering if there is anyone experienced with using e.g. figaro gas or futurelec gas sensors and knows how to translate the analog output into ppm
What I would do is to break up the graph from the datasheet into a few
linear segments and then use the line equation, y=mx + b, to map the
analog voltage to a ppm value.
(* jcl *)
link provided me the scientific information which i have read me in my training,thanks but i have no experience regading gas sensors