kikifromcayman
Guest
- Messages
- 30
- Reaction score
- 0
- # of dives
- 100 - 199
This is what i understand to be true!PLease let me know if you guys agree/ disagree, and why???? -thanks!
Unbalanced Piston 1st Stage:
-Is NOT affected by changes in depth ie: it will breathe the same at the surface as it will at 100ft’ (This is because as Depth increases , IP increases, and this compensates for the Increasing Density of the air)
-IS affected by changes in tank pressure! ( Force = Pressure x Surface Area at either end of the piston)Gets Harder to breathe as Tank pressure drops
Balanced Piston First Stage:
- Is NOT affected by Depth (Exact same reason as Unbalanced Piston)
-IS NOT affected by Changes in Tank Pressure ( 1 End of the piston has its surface area reduced to a Minimal amount therefore no force is applied to it)
There is no such thing as an Over Balanced Piston.
Unbalanced Diaphragm 1st Stage (Poseidon):
- Is NOT affected by changes in Depth (Same reason)
- IS affected by changes in tank pressure ( IP Rises and Gets easier to breathe as tank pressure drops) This Rise in IP is more Dramatic than in an ‘Aqualung’ Overbalanced Diaphragm.
Balanced Diaphragm First Stage:
-is NOT affected by Changes in DEPTH (same reason)
-Is NOT affected by changes in Tank Pressure ( Balancing chamber at end of poppet + equal surface areas)
Overbalanced Diaphragm ‘Aqualung’ 1st stage
-IS affected by changes in depth ( IP Rises quicker than normal due to a 2nd larger diaphragm)
- Is Not affected by Changes in Tank Pressure, (same reason as Balanced diaphragm)
Unbalanced Piston 1st Stage:
-Is NOT affected by changes in depth ie: it will breathe the same at the surface as it will at 100ft’ (This is because as Depth increases , IP increases, and this compensates for the Increasing Density of the air)
-IS affected by changes in tank pressure! ( Force = Pressure x Surface Area at either end of the piston)Gets Harder to breathe as Tank pressure drops
Balanced Piston First Stage:
- Is NOT affected by Depth (Exact same reason as Unbalanced Piston)
-IS NOT affected by Changes in Tank Pressure ( 1 End of the piston has its surface area reduced to a Minimal amount therefore no force is applied to it)
There is no such thing as an Over Balanced Piston.
Unbalanced Diaphragm 1st Stage (Poseidon):
- Is NOT affected by changes in Depth (Same reason)
- IS affected by changes in tank pressure ( IP Rises and Gets easier to breathe as tank pressure drops) This Rise in IP is more Dramatic than in an ‘Aqualung’ Overbalanced Diaphragm.
Balanced Diaphragm First Stage:
-is NOT affected by Changes in DEPTH (same reason)
-Is NOT affected by changes in Tank Pressure ( Balancing chamber at end of poppet + equal surface areas)
Overbalanced Diaphragm ‘Aqualung’ 1st stage
-IS affected by changes in depth ( IP Rises quicker than normal due to a 2nd larger diaphragm)
- Is Not affected by Changes in Tank Pressure, (same reason as Balanced diaphragm)