Dive Rite O2ptima Owner's Manual download pdf (Page 41)

O ptima FX Owner’s Manual

Ch. 5 Pg. 5

Decompression / No Decompression Dive Planning

The O2ptima features a built in dive computer capable of tracking gas loading on a constant PO

profile. This does not negate the need to pre-plan the dive nor does it negate the recommendation

that some form of backup planning/tracking being employed. Alternate planning/tracking is

essential should the tissue loading in the HammerHead become lost or corrupted.

Rebreather dive planning can be realized without any special tables or computers by determining

the Oxygen percentage in the breathing loop. This allows an Equivalent Air Depth to be calculated

and used in exactly the same manner as in Nitrox diving.

The fO is calculated by dividing the set point's PO at the maximum depth (total pressure in ata's

or bars). This value can be used on your favorite tables or standard nitrox dive computer.

By using the lowest oxygen percentage (achieved at the deepest part of the dive), a good margin

of safety can be realized as there is more Oxygen and less inert gas in the breathing mix at all other

depths when diving a constant PO .

There are constant PO tables, various dive planning software and dive computers that allow

planning of constant PO profiles.

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 57 58

No comments

Dive Rite O2ptima Owner's Manual Page 41