Sensor calibration

D153, D175, C125, C127, C185 and C187 forum

Sensor calibration

Postby The Outlaw on Fri May 17, 2024 7:03 am

Having a few issues trying to calibrate a pressure sensor (SSI P51 100psi), can’t seem to get it to a low enough voltage, won’t go below 0.712. Needs to be 0.500 or lower. So it’s always 2 psi out.. tried zeroing it, reloading calibration but always goes back to the higher number.. could it be faulty sensor or iam I doing something wrong..
Thanks in advance
The Outlaw
 
Posts: 4
Joined: Wed Apr 03, 2024 6:30 am

Re: Sensor calibration

Postby David Ferguson on Fri May 17, 2024 7:08 am

I have questions, but it would be easy to answer if you would upload your dash configuration.
David Ferguson
Veracity Racing Data
David Ferguson
Pro User
 
Posts: 1331
Joined: Fri Nov 07, 2008 2:45 am
Location: Paso Robles, California

Re: Sensor calibration

Postby The Outlaw on Fri May 17, 2024 8:15 am

David Ferguson wrote:I have questions, but it would be easy to answer if you would upload your dash configuration.

Trying to upload this calibration V 0.525 = 0.0 psi
V 4.500 = 100.1 psi
It’s another SSI sensor measuring fuel that I use

But will always go back as soon as I calibrate it to V 0.712 = 0.00psi
V 4.686 = 100.1psi
Last edited by The Outlaw on Fri May 17, 2024 9:10 am, edited 1 time in total.
The Outlaw
 
Posts: 4
Joined: Wed Apr 03, 2024 6:30 am

Re: Sensor calibration

Postby David Ferguson on Fri May 17, 2024 8:48 am

Here's one that I hit sometimes. When the in the Sensor Calibration window. After you make changes, be sure to click the "OK' button at the bottom. Closing the window using the close box (upper right corner), is like clicking the "Cancel" button, and the changes are ignored.

Is the sensor connected to an Analog Voltage or Analog Temperature input? If you connect to an Analog Temperature input this is an internal pull-up resistor that will skew the voltage readings of some sensors. So for a powered pressure sensor, Analog Voltage is recommended.

Hope this is helpful.
David Ferguson
Veracity Racing Data
David Ferguson
Pro User
 
Posts: 1331
Joined: Fri Nov 07, 2008 2:45 am
Location: Paso Robles, California


Return to Colour displays

Who is online

Users browsing this forum: No registered users and 11 guests