View Full Version : Pid that converts voltage to pressure
aaronr
May 5th, 2012, 01:48 PM
I want to convert a/c pressure sensor voltage to psi. I looked through the existing pid and didn't find one.
Laychut
May 5th, 2012, 02:35 PM
Hi aaronr,
There is a calc PID for converting voltage to PSI for engine oil pressure. I have attached my Calc PID txt with that calc in it. I would think that you could use the same principle for the A/C sensor
13101.
It is the bottom calc.
Cheers
aaronr
May 5th, 2012, 02:54 PM
So my only question is 5v should be 325psi?
Laychut
May 5th, 2012, 02:54 PM
I have attached a Calc txt file that only has the engine oil PID in it. I thought the first one might be a bit confusing.
13102
Cheers
Laychut
May 5th, 2012, 02:59 PM
You need to know the range of your sensor. This will dictate what 5v equals.
I am by far NOT an expert on Calc PIDs. Below is a link to where I found the engine oil PID. Maybe these guys can give you better information.
joecar is good with calc pids.
http://forum.efilive.com/showthread.php?14605-Oil-pressure-PID
Cheers,
Laychut
May 5th, 2012, 04:30 PM
Hey aaronr,
I just found this link that may be helpful for converting your voltage. It also provides the PID to log.
http://forum.efilive.com/showthread.php?7957-What-happened-to-my-A-C-Pressure-PID-!
Cheers,
aaronr
May 6th, 2012, 02:53 AM
Yeah I found that thread after I posted. Thanks for the help
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