My project the VIPER uses a hydrocarbon gas sensor to detect LPG.
http://www.jaycar.co.nz/products_uploaded/RS5610.pdf
The problem is, when reading the analog data from a Picaxe the data is between 0 and 255 naturally. Do you know how I could convert this reading into ppm? So I can make a useful graph.
When the gas level is high I get an analogue reading of about 218 and the PDF (link above) says the sensor is sensitive to 200 - 10000 ppm LPG. So I guess the question is, what would 218 be in ppm?
Is it just a simple ratio equation? 255:10000? Where 218 would equal about 8549 ppm
Any help on this would be much appreciated.
Thanks
http://www.jaycar.co.nz/products_uploaded/RS5610.pdf
The problem is, when reading the analog data from a Picaxe the data is between 0 and 255 naturally. Do you know how I could convert this reading into ppm? So I can make a useful graph.
When the gas level is high I get an analogue reading of about 218 and the PDF (link above) says the sensor is sensitive to 200 - 10000 ppm LPG. So I guess the question is, what would 218 be in ppm?
Is it just a simple ratio equation? 255:10000? Where 218 would equal about 8549 ppm
Any help on this would be much appreciated.
Thanks
Attachments
-
248.5 KB Views: 21
-
110 KB Views: 16