Get your calculator- a blending quiz

[Woz]

Right. Currently in the boot of my car I have:

AL40 with 110 bar of 49% in it.
Twin 12.5's with 40 bar of 33% in them.
Twin 10's with 10 bar or air in them.
AL3 with 73 bar of O2 in it.

At work I have a J of O2 with 85 bar in it (that's a 50 litre cylinder).

So. What I want to end up with is....

Twin 12's with 26% in them for a 43m dive.
Twin 10's with 26% in them for the same dive.
AL40 with fiddy in it.
AL3 with fiddy in it.

10's, 12's and 3 are 232, AL40 is 207.

Now. I know I can get enough from the J to blend all of that from flat cylinders. However the pikey in me hates chucking anything away, especially 110 bar of perfectly good fiddy. So- using the 3 of O2 and AL40 with 49% as the source of my O2, what's the calcs for transferring it to the other cyls? Can it be done? Is there enough fiddy? What about using the 3 of O2 only? Cos 110 in the 40 is enough for the deco on the dive.

[Ivon]

Do your own bloody gas calcs you lazzy tw*t

[mixedangased]

Originally Posted by Woz

Right. Currently in the boot of my car I have:

AL40 with 110 bar of 49% in it.
Twin 12.5's with 40 bar of 33% in them.
Twin 10's with 10 bar or air in them.
AL3 with 73 bar of O2 in it.

At work I have a J of O2 with 85 bar in it (that's a 50 litre cylinder).

So. What I want to end up with is....

Twin 12's with 26% in them for a 43m dive.
Twin 10's with 26% in them for the same dive.
AL40 with fiddy in it.
AL3 with fiddy in it.

10's, 12's and 3 are 232, AL40 is 207.

Now. I know I can get enough from the J to blend all of that from flat cylinders. However the pikey in me hates chucking anything away, especially 110 bar of perfectly good fiddy. So- using the 3 of O2 and AL40 with 49% as the source of my O2, what's the calcs for transferring it to the other cyls? Can it be done? Is there enough fiddy? What about using the 3 of O2 only? Cos 110 in the 40 is enough for the deco on the dive.

download gas management program (gmp) 4 free it give u mixes when using other mixes to top off,

[swissdave]

Originally Posted by Woz

Right. Currently in the boot of my car I have:

AL40 with 110 bar of 49% in it.
Twin 12.5's with 40 bar of 33% in them.
Twin 10's with 10 bar or air in them.
AL3 with 73 bar of O2 in it.

At work I have a J of O2 with 85 bar in it (that's a 50 litre cylinder).

Bloody Terrorist

Dave

[Mick F]

Originally Posted by swissdave

Bloody Terrorist

Dave

Well I hope the car's not a Cherokee.






They're only good for two to the gallon

[milldog]

Originally Posted by Woz

Right. Currently in the boot of my car I have:

AL40 with 110 bar of 49% in it. add O2 to 145.7 bar and top off with air to 207 bar
Twin 12.5's with 40 bar of 33% in them. add O2 to 48.4 bar and top off with air to 232
Twin 10's with 10 bar or air in them. fill with O2 to 24.6 and then top off with air to 232
AL3 with 73 bar of O2 in it. top up with O2 to 84.3 and then fill with air to 232

At work I have a J of O2 with 85 bar in it (that's a 50 litre cylinder).

So. What I want to end up with is....

Twin 12's with 26% in them for a 43m dive.
Twin 10's with 26% in them for the same dive.
AL40 with fiddy in it.
AL3 with fiddy in it.

10's, 12's and 3 are 232, AL40 is 207.

Now. I know I can get enough from the J to blend all of that from flat cylinders. However the pikey in me hates chucking anything away, especially 110 bar of perfectly good fiddy. So- using the 3 of O2 and AL40 with 49% as the source of my O2, what's the calcs for transferring it to the other cyls? Can it be done? Is there enough fiddy? What about using the 3 of O2 only? Cos 110 in the 40 is enough for the deco on the dive.

AL40 with 110 bar of 49% in it. add O2 to 145.7 bar and top off with air to 207 bar
Twin 12.5's with 40 bar of 33% in them. add O2 to 48.4 bar and top off with air to 232
Twin 10's with 10 bar or air in them. fill with O2 to 24.6 and then top off with air to 232
AL3 with 73 bar of O2 in it. top up with O2 to 84.3 and then fill with air to 232

just fill the highest ones first you can do the rest

Graham

[Timbobaggins]

Originally Posted by mixedangased

download gas management program (gmp) 4 free it give u mixes when using other mixes to top off,

Where from

[nigelH]

Originally Posted by Woz

Right. Currently in the boot of my car I have:

AL40 with 110 bar of 49% in it.
Twin 12.5's with 40 bar of 33% in them.
Twin 10's with 10 bar or air in them.
AL3 with 73 bar of O2 in it.

At work I have a J of O2 with 85 bar in it (that's a 50 litre cylinder).

So. What I want to end up with is....

Twin 12's with 26% in them for a 43m dive.
Twin 10's with 26% in them for the same dive.
AL40 with fiddy in it.
AL3 with fiddy in it.

10's, 12's and 3 are 232, AL40 is 207.

Now. I know I can get enough from the J to blend all of that from flat cylinders. However the pikey in me hates chucking anything away, especially 110 bar of perfectly good fiddy. So- using the 3 of O2 and AL40 with 49% as the source of my O2, what's the calcs for transferring it to the other cyls? Can it be done? Is there enough fiddy? What about using the 3 of O2 only? Cos 110 in the 40 is enough for the deco on the dive.

And people wonder why I dive a rebreather...
I have two 3L cylinders. They both have at least 100 bar left from last weekend.

Let's go dive.

[mixedangased]

put in a search 4 gmp
scubasoft.net is his site but just looked and u might have to pay 4 it now

[ardhill]

GMP - Gas Management Program
But looks like it's a GUE program now.

Edit: Beaten to it.