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Surface pressure compensation
Posted: Monday 23. January 2023, 15:07
by Berthold
I got a new OSTC+ with FW 10.75. My surface pressure reading is consistently about 33hPa too high (i.e. 1069 instead of the correct 1036hPa). I tried to adjust via compensation values through OSTConfig but whenever I enter negative values, the compensation value in the Information page shows -99hPa, and the actual indicated pressure value remains unchanged.
Is there any solution to this, and does the incorrect surface pressure reading have any implication on the accuracy of the model?
I know this topic has been raised by a different user before but seems not to have been answered.
Thanks for addressing this issue!
Re: Surface pressure compensation
Posted: Tuesday 24. January 2023, 18:06
by gr3yw0lf
hm...
have you tried to set the offset on your desktop pc via subsurface?
Re: Surface pressure compensation
Posted: Tuesday 24. January 2023, 20:58
by Berthold
Hi gr3yw0lf, Subsurface doesn't work for me as it doesn't connect to the OSTC. I'm using a MacBook, and I guess the software is not up to date on this system. Do you know of any other way to access the config?
Thanks for your thoughts!
Re: Surface pressure compensation
Posted: Thursday 2. March 2023, 15:31
by Berthold
I'd like to get back to this topic. My OSTC+ pressure sensor still shows 30hPa too much (1053 instead of 1023). When traveling recently the sensor showed a similar discrepancy to the downside after flying. I cannot imagine this to be within the tolerances, or is it?
Re: Surface pressure compensation
Posted: Thursday 2. March 2023, 16:13
by gr3yw0lf
Re: Surface pressure compensation
Posted: Wednesday 13. September 2023, 09:46
by MatiasJoel
Hey there! Sorry to hear about the pressure reading issue with your OSTC+ firmware 10.75. It's crucial for accurate data. The negative compensation value might be causing a glitch. We recommend reaching out to customer support for a more detailed solution. As for the accuracy,
Workers compensation lawyeran incorrect surface pressure reading can affect your dive profile. It's always best to ensure accurate data for safety.
Re: Surface pressure compensation
Posted: Wednesday 20. September 2023, 10:48
by heinrichsweikamp
Hello,
The OSTC+ will use the surface pressure reading for the 0m reference. So, some hPa more or less will NOT affect your depth reading and this is not critical. A defective pressure sensor will show (intentionally) 9999hPa on the surface.
regards,
Matthias