Charles2
Contributor
Didn't see where the poster said he had HP steel, just steel. If it's LP the calcs are different.
You are right, of course, I am just not familiar with an LP 80 steel. If you have the specs on one, I can repeat the calcs?
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Didn't see where the poster said he had HP steel, just steel. If it's LP the calcs are different.
You are right, of course, I am just not familiar with an LP 80 steel. If you have the specs on one, I can repeat the calcs?
2400# service +10%, 80.6 cuft or 78 cuft @2640#, depending on manufacturer. And you would have to do the calculation twice because he may or may not be able to fill above service pressure if no current + stamp.
And then there is the Faber "mid pressure" 3180# service +10%, 80 cuft @3498#, which might be considered high or low depending on the + stamp.
Have fun!
Bob
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The most important thing to plan when solo diving is to make sure that you are not diving with an idiot. Dsix36
Air Time Remaining (AIR)
ATR is calculated using a patented algorithm that is based on a diver's individual Air Consumption Rate and Current Depth. Tank Pressure is measured once each second and an average rate of Consumption is calculated over a 90 second period. This Rate of Consumption is then used in conjunction with the Depth to predict the Air required for the diver to make a safe controlled Ascent including the No Deco Deep and Safety Stops and any required Deco Stops.
Air Consumption and Depth are continuously monitored and ATR reflects any change in circumstances. For example, when you suddenly find yourself swimming against a strong current and begin breathing more rapidly, the VT 4.0 will recognize the change and adjust ATR accordingly.
ATR is the time you can remain at the present Depth and still safely surface with the Tank Pressure reserve that you selected during setup (End Pressure Alarm Setting).
ATR is displayed on the Dive Main screens (Fig. 42a).
ATR Alarm
When ATR decreases to 5 minutes, the Audible will sound and the ATR time digits and graphic AIR TIME will Rash (Fig. 43). If it decreases to 0, the Audible will sound again. The time digits and graphic will continue to flash until ATR becomes greater than 5 minutes.
You should initiate a controlled Ascent while monitoring Tank Pressure. However, there is no reason to panic, the VT 4.0 has allowed for the Air necessary for a safe Ascent including the No Deco Deep and Safety Stops, if set On, and any Deco Stops required.