The first rule I follow in tracking down something like this is: find out what changed.
First, check your calculation. Mine is in a spreadsheet so I only plug in the numbers and it calculates the same way every time. Second, check your numbers. Again, I get two tank pressures taken the same way, same place (at home, before and after at the same inside temp). My depth and time come off the Shearwater so they are the same.
Once you've eliminated numbers and calculation, it can ONLY be one of two things to account for increased SAC: something is leaking on your gear, or it's you.
Gear is equally easy to check - do a bubble check during the dive.
So that leaves you. If you can't track down a known reason (med change, stress change, known changes in your health), then maybe time to see a doctor and have a checkup. Normally it's pretty easy to find a good reason for SAC changes, so if you can't, that could be a sign somethings up.
First, check your calculation. Mine is in a spreadsheet so I only plug in the numbers and it calculates the same way every time. Second, check your numbers. Again, I get two tank pressures taken the same way, same place (at home, before and after at the same inside temp). My depth and time come off the Shearwater so they are the same.
Once you've eliminated numbers and calculation, it can ONLY be one of two things to account for increased SAC: something is leaking on your gear, or it's you.
Gear is equally easy to check - do a bubble check during the dive.
So that leaves you. If you can't track down a known reason (med change, stress change, known changes in your health), then maybe time to see a doctor and have a checkup. Normally it's pretty easy to find a good reason for SAC changes, so if you can't, that could be a sign somethings up.