Air Consumption values don't match: Summary, Environment

Air Consumption values don't match: Summary, Environment

Postby banjobees » Thu Jun 13, 2019 3:29 pm

Good Afternoon. On my Dive Log Manager I noticed that the values for RMV air consumption differ between the "Environment" and 'Summary' pages.
For example:
Environment: working pressure: 3400 psi, size 100 cu ft, avg. depth 53 ft; start psi 2611, end psi 580 psi, delta psi 2031 = 0.52 cu ft / min
Summary: avg depth 53 ft, 100 cu ft Steel, start psi 2611, end psi 580, delta psi 2031 = 0.46 cu ft / min

Looking back over earlier dives, this seems to always be the case. Shouldn't the values be the same?
banjobees
 
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Joined: Thu Jun 13, 2019 2:39 pm

Re: Air Consumption values don't match: Summary, Environment

Postby support » Thu Jun 13, 2019 4:50 pm

No, they don't match. The value as shown in the Dive Summary uses the dive time as "shown" in the dive profile samples. (Go to the Profile tab and then click back 1 sample to see what this is). The value as shown on the Environment tab is calculated using the dive time as shown on the Dive details tab. We changed this recently due to customer feedback and the fact that many new dive computers were putting "extra" or additional surface samples at the end of the dive but still having the dive time stop when they arrived at the surface.

At the time, it seemed like a good idea to show the value both ways so the user could compare the two. But in retrospect, this wasn't a good idea and probably just leads to confusion. :-(

The next version of Dive Log Manager/DiveLogDT will calculate it the same way in both places. Because the dive time field on the dive Details tab is user editable, the user can edit this field to be whatever their own personal choice is as far as dive time is and then know that it will be used in the SAC/RMV calculations.

Sorry for the confusion. And since this wasn't well documented, that's another good reason to do it the same way in both places.

Janice
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Re: Air Consumption values don't match: Summary, Environment

Postby banjobees » Fri Jun 14, 2019 7:07 pm

Thanks Janice!
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