I am wanting to design a tire inflator that stops the compressor after a set pressure has been reached in the tire. I would like to use a pressure sensor but I am not sure exactly how these animals work. I have read a little and from what I have gotten it seems that their resistance changes with pressure which in turn changes the output voltage. I am thinking take this output voltage and put it through an A/D converter and go from there.
Is there any way to determine what voltage represents what pressure and vice versa?
The sensor that I ordered as a sample was MSI Sensors part number1451-100G-T. I got it from mouser and their part number is 824-1451-100G-T. It ranges from 0-100psig. The only thing that I have connected it to so far was a small aquarium pump which only pumped about 1psi. It didnt register anything whatsoever on the gauge by looking at the voltage with my Oscilliscope.
Has anyone done this before? Hopefully you guys can shed some light on this a little better for me.