Are you still imperial?

[sheck33]

Knavey once bubbled...
What units shall I measure this pressure in my head that is signaling it is going to explode?

Metric, Imperial, Aspirin...? What are the UNITS!!!????!!!

Argh!

for pressure you can use

bar
PSI
torr
cm H20
mm Hg
pascal
m H2O
m Hg

LOL
ut:

 

[Don Burke]

Knavey once bubbled... What units shall I measure this pressure in my head that is signaling it is going to explode?

Metric, Imperial, Aspirin...? What are the UNITS!!!????!!!

Argh!

Drams per arpent

 

[Knavey]

Don Burke once bubbled...
Drams per arpent

BOOOOOM!

 

[Albion]

KrisB once bubbled...


Forgot to answer the question. Of course, there would be a required safety stop in there, following the dive, assuming it is your first of the day, you'd be at PG 'R' on the PADI RDP.

Presume the Safety stop would be at 5/22 of a chain for 1/28800 of a day


Also found this one at the bottom of the extremely sad trivia bucket
A Miners inch of water - surprised me, it is actually a measure of flow and is 8.977 gallons per minute in Idaho, Kansas Nebraska new Mexico, but in Arizona California and Montana it is 11.22 and in Colorado it’s 11.69) - could you please change to metric

I Will now go out and get a life

 

[Ender]

To add to the confusion (and get it back to diving) , fsw is not a length unit but a pressure (depth) unit. When you're diving in 33fsw you're not 33' under water, but slightly shallower. That's because 33fsw = 1ATA (exactly) = 1.013265 bar (or 101.3265 kPa) while 33feet under water would be somewhere around 1.0259 bar
(all pressures less relative to surface, specifc gravity of salt water assumed to be 1.020).
Oh, and 10msw != 1ATA, but 1bar as well to add to the confusion.
So, the conversion ration between fsw and msw is actually 3.2568fsw = 1msw as opposed to 3.2808' = 1m.
Have fun .
V.

 

[Groundhog246]

Ender once bubbled...
When you're diving in 33fsw you're not 33' under water, but slightly shallower. That's because 33fsw = 1ATA (exactly) = 1.013265 bar (or 101.3265 kPa) while 33feet under water would be somewhere around 1.0259 bar

You've completely lost me with that. Do you mean if the bottom is 33fsw you can't be 33' under? Or do you mean if you stop your ascent at 33fsw in salt water, you're not at 33fsw??? Of course around here we're diving in fresh water, so stopping at 33fsw on your guage is liekly about 35 feet.
BTW, I thought a stop at 33fsw = 2ATA

 

[Ender]

Groundhog246 once bubbled...


You've completely lost me with that. Do you mean if the bottom is 33fsw you can't be 33' under? Or do you mean if you stop your ascent at 33fsw in salt water, you're not at 33fsw??? Of course around here we're diving in fresh water, so stopping at 33fsw on your guage is liekly about 35 feet.
BTW, I thought a stop at 33fsw = 2ATA

Ah, the confusion starts as intended .
Remember, fsw is a measure of _presure_ not length. Presure does not equal depth, per-se. Salt water and fresh water are good examples of this, even salt water can have dirrefernt specific pressure (usually between 1.020 and 1.030, Buhlman assumes 1.020 I believe).
fsw/msw comes from deco theory, to "give a feel for depth", but are really pressure units. In on/off gasing, it's the pressure (or rather pressure changes) that counts, rather than depth.
That's why you hear that someone was taken for a chamber ride to 60fsw for 285 minutes (Navy treatment table 6 IIRC) - even though the chamber is on the surface .
So, when you stop your ascent/descent with ambient pressure of 33fsw you very likely aren't 33' under the surface. You'd be quite close though .
Hope this makes it clear as mud .
V.

 

[Corregidor]

I've gone metric - gauges, computer, course work. Most of my diving is in Asia now so it's much easier to go with the flow...

Jim

 

[drbill]

Arnaud- Just happened on this thread and being the far left-leaning pinko that I am, of course I dive imperial... this is an imperialistic country. As a scientist, however, I'm fully conversant with the metric system and use it when traveling.

Dr. Bill

 

[nessum]

I'm being lazy & not reading all 8 million posts on this thread before adding my 2 cents.

Living in Canada my brain is pretty damn confused. we drive in kilometres & pump gas by the litre. I do a lot of boating so I also think in knots (which I know are 1.1 miles). And my dive tables are in feet... which is also how I can best describe my own height, despite the fact that my driver's liscence insists I am a certain number of centimeters.