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3bar correct calibration

Old May 11, 2013 | 05:16 PM
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Default 3bar correct calibration

I have the 12223861 gm 3bar brick. Does anyone have the correct info for those 2 tables and the linear and offset values?
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Old May 12, 2013 | 06:40 AM
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Looks like that sensor is 40 and 304. I've used as low as 10 for the offset. You just want to make sure your Kpa at key on engine off (baro) is accurate for your altitude. Approx 103 for sea level.

You could also put a vacuum/pressure gauge on it, if you want to get real accurate, and make sure it corresponds to your scan pid.
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Old May 12, 2013 | 07:10 AM
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Originally Posted by edcmat-l1
Looks like that sensor is 40 and 304. I've used as low as 10 for the offset. You just want to make sure your Kpa at key on engine off (baro) is accurate for your altitude. Approx 103 for sea level.

You could also put a vacuum/pressure gauge on it, if you want to get real accurate, and make sure it corresponds to your scan pid.
Thanks Ed! So you just adjust the offset until the koeo reads ~103kpa?
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Old May 12, 2013 | 09:05 AM
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That part number on my schematic spreadsheet shows the 0v = 1.11kPa and 5v = 315.58kPa....

12580698 2bar 8kpa 208kpa v=5(0.005*P-0.04)
12615136 2bar 8kpa 208kpa v=5(0.005*P-0.04)
09350899 2bar 8kpa 208kpa v=5(0.005*P-0.04)
16235939 2bar 8kpa 208kpa v=5(0.005*P-0.04)
09373269 3.3bar 36.66kpa 370kpa v=5(0.003P-0.11)
12223861 3bar fat 1.11kpa 315.58kpa v=5(0.00318P-0.00353)
12219935 3bar fat 43.24kpa 313.51kpa v=5(0.0037P-0.16)
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Old May 12, 2013 | 09:31 AM
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Originally Posted by James@ShorTuning
That part number on my schematic spreadsheet shows the 0v = 1.11kPa and 5v = 315.58kPa....

12580698 2bar 8kpa 208kpa v=5(0.005*P-0.04)
12615136 2bar 8kpa 208kpa v=5(0.005*P-0.04)
09350899 2bar 8kpa 208kpa v=5(0.005*P-0.04)
16235939 2bar 8kpa 208kpa v=5(0.005*P-0.04)
09373269 3.3bar 36.66kpa 370kpa v=5(0.003P-0.11)
12223861 3bar fat 1.11kpa 315.58kpa v=5(0.00318P-0.00353)
12219935 3bar fat 43.24kpa 313.51kpa v=5(0.0037P-0.16)
That's great info!
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Old Sep 6, 2013 | 04:28 AM
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I'm going to bump this thread up just so I understand this correctly. The linear value is going to be 304kpa or 315.58kPa for part number 12223861? With the data the Delphi supplies, (304-40)/(5.044-.761) = 61.639 kpa per volt. So at 5v*61.639, I'm getting 308.195kpa.. Is this the correct way of finding the linear value?

And the offset is adjusted until the correct atmospheric pressure is displayed based on your elevation? Using Delphi's data, I got 1.11 for the like James did

Last edited by oakley6575; Sep 6, 2013 at 04:59 AM.
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