Need some Help With Sac Rate Calcs.

[Panga Man]

I think I have done everything correct but need someone to double check for me.

Todays Dive

Starting PSI 2000
Ending PSI 500
Total Dive time 47 Minutes

AL 80 / 77 CFT Rated at 3000 PSI

Diving at 26' / 1.787879 ATM

So that gives me a 0.819148936 at 1.787879 ATM
Does that mean my Sac rate is 0.458393361

Hopefully I have done my math right and it is true ! !

 

[Scott L]

I think I have done everything correct but need someone to double check for me.

Todays Dive

Starting PSI 2000
Ending PSI 500
Total Dive time 47 Minutes

AL 80 / 77 CFT Rated at 3000 PSI

Diving at 26' / 1.787879 ATM

So that gives me a 0.819148936 at 1.787879 ATM
Does that mean my Sac rate is 0.458393361

Hopefully I have done my math right and it is true ! !

My math yeilds a RMV of .7933 although my calculations are not normally to be trusted.

 

[emoreira]

In the way I calculate the SAC rate, your figures give me 0,48 cuft/min

 

[Scott L]

deleted...

 

[Firefyter]

Try this SAC Rate Calculator. According to the numbers you provided, your SAC for this dive was 0.45816804904435626 CU.FT/Min.

 

[Scott L]

Try this SAC Rate Calculator. According to the numbers you provided, your SAC for this dive was 0.45816804904435626 CU.FT/Min.

Looks good! I incorrectly inputed 3000psi as the starting point. Who accomplishes the OP's fills? Lol

 

[Firefyter]

Works for me

 

[Scott L]

He spent 47 minutes @ 26'. He used 1500 PSI from a 77 cf. Tank with a working pressure of 3000 PSI. It still comes out with the same numbers I got before.

Thought I was quick to edit. :depressed:

 

[dumpsterDiver]

the guy used around 40 cu-ft in 47 minutes. That is around 0.8 cuft/min at DEPTH, so obviously the SAc can not be 0.78????

 

[Firefyter]

Thought I was quick to edit.

You were. Fixed mine too....LOL.