Etikett: acetone
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Calibrating a Figaro TGS822 sensor, by drawing…
After consulting with the boys and girls at chemicalforums.com about how to produce an ethanol gas with a 300 ppm without having to buy a lot of fancy gear and thus finding out that it was more difficult then I initially thought I have reluctantly decided that I don’t think I will be able to pull…
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Hi, I’m Ketosense
During the weekend I have managed to put together a first very early prototype of my ”Ketosense”. It does register when a person is blowing in to the ”gas chamber” where the sensor is located and something that feels encouraging is that my wife gets significantly higher readings then me. Since I’m still a carbohydrate…
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Measured sensor characteristics MQ-3 and TGS822
The 48 hour burn in of both sensors has now been completed and I have been able to do some initial measurements of the sensors characteristics. So far both the sensors does seem to react to acetone but that is not rely surprising. The sensor resistance range (Rs) does vary a lot between them, the…
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Expected aceton concentration
After doing some Google searching I found several different studies on the concentration of acetone in a persons breath and here I will look in to some of them. Study 1 I found a Study published in the paper ”The American Journal of clinical nutrition” where the concentration of breath acetone was measured after every hour for…
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