I want to thank you all for your help. My program works fine now. I am now trying to find a way to convert the analog reading from my sensors, PT1A PTT1 PT1B PT1C , to PSI. I have included a link to the data sheet below. I am currently using 5Vdc for the supply voltage and the nominal output transfer function 5Vdc supply, the parameter is 0.5Vdc to 4.5Vdc (ratiometric to supply). Any one have any idea how i would go about converitng the an analog reading of, for instance, 114 to psi?