Frank Kohler
Contributor
ok i just got my tank out of where i keep it and i hooked the reg up to it and i know since my last dive i left 1000 psi in the tank but now theres 2000 psi? whats up with that i mean how did it incress so much?
more air?!?!?
- Thread starter Frank Kohler
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
Changes in temperature can definitely have an effect on the indicated volume inside your tank. So if you are storing it somewhere at a much warmer temp than it was at the end ofyour dive that can explain a change in the pressure. You might also want to take into consideration that you may have had more air in your tank at the end of the dive than you thought.
Charles' law tells us that, for a constant volume, the temperature would have to double for the pressure to double.
A better bet: the scuba gremlins snuck into your garage and added a thousand PSI. Or maybe a wife or buddy borrowed it without asking, returning it with 2000 PSI. Or maybe you just mis-read the guage...
A better bet: the scuba gremlins snuck into your garage and added a thousand PSI. Or maybe a wife or buddy borrowed it without asking, returning it with 2000 PSI. Or maybe you just mis-read the guage...
Charlie99
Contributor
- Messages
- 7,966
- Reaction score
- 167
- # of dives
- 500 - 999
Ummm. Pressure is directly proportional to absolute temp, so it changes only about 2% for every 10 F change.
At my age, I'd just chalk it up to a memory problem, but since your profile lists you as a teen diver, you might also check your SPG on another tank to eliminate erroneouos SPG readings as a possibility.
At my age, I'd just chalk it up to a memory problem, but since your profile lists you as a teen diver, you might also check your SPG on another tank to eliminate erroneouos SPG readings as a possibility.
OP
Frank Kohler
Contributor
thank you for all the respons, lol well i know i did not miss read it after the last dive i recored my ending psi after every dive in a book, lol my room must have incressed in temp a lot.
metaldector
Contributor
You were visited by the Air Fairy! The only plausable explaination.
teknitroxdiver
Contributor
The needle could have been stuck the first time for whatever reason. Or, did you write the pressure down after you'd turned off the air? Lots of time the air will slowly leak out, so after a long boat ride or a trip home your hoses could have lost some pressure, even though there was really still 2000 psi in the tank.
ShakaZulu
Contributor
Do you believe in Jesus...........miracle my friend.
Similar threads
