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otu calculation table

A calculator for the OTU per minute and the pulmonary dose.

This calculator works out the oxygen dose for the lungs. The number goes up when the oxygen pressure is higher, or when you stay there longer.

OTU dose

Apabila kamu berada pada tekanan oksigen 1.30 bar selama 30 menit, maka tiap menit paru-paru menerima 1.48 OTU, jadi dosisnya 44.4 OTU. Kesimpulannya, 44.4 OTU masih di bawah 300 OTU untuk satu hari, jadi masih aman.

What the words mean

OTU
OTU stands for oxygen toxicity unit, the oxygen dose for the lungs. It comes from the PPO2 and the time you stay there. This dose builds slowly, apart from the CNS clock.
PPO2
PPO2 stands for partial pressure of oxygen. This table has rows from 0.5 to 2.0.
Per minute
The number in the table for that PPO2 row. The total dose is this number times the minutes.
Minutes
How long you stay at that PPO2, in minutes.
PPO2 row
The PPO2 is rounded up to the next higher row. 1.35 uses the 1.4 row.
Ring scale
The ring fills at 300 OTU. This tool uses 300 as the pulmonary dose limit for one day.

A planning aid, not a substitute for training or a dive computer.