Scubaroo
Contributor
Got a silly question (always worth asking)...
One of the local boats I dive from does nitrox fills onboard. I'm looking at putting a set of doubles together, but they're AL80's - not large enough to do two dives from for my typical profile. So I would be looking at getting a fill between dives from the boat's compressor (they do continuous blend filling I believe).
How accurate would gas analysis be after getting a fill? Assuming you're only filling through one post with the isolator open, is the gas being pumped going to mix sufficiently in BOTH tanks? Say I had EAN32 from a shop in the tanks for the first dive, used half, then got a fill from the boat of EAN36 (you kinda get what they give unless you expressly ask for a lean mixture where they top off with air), is the EAN36 going to find its way evenly into both tanks? Should I analyze from both posts? I realize that when two gases are mixed, they evenly disperse, but how effective is this through the isolation manifold from one tank to another?
One of the local boats I dive from does nitrox fills onboard. I'm looking at putting a set of doubles together, but they're AL80's - not large enough to do two dives from for my typical profile. So I would be looking at getting a fill between dives from the boat's compressor (they do continuous blend filling I believe).
How accurate would gas analysis be after getting a fill? Assuming you're only filling through one post with the isolator open, is the gas being pumped going to mix sufficiently in BOTH tanks? Say I had EAN32 from a shop in the tanks for the first dive, used half, then got a fill from the boat of EAN36 (you kinda get what they give unless you expressly ask for a lean mixture where they top off with air), is the EAN36 going to find its way evenly into both tanks? Should I analyze from both posts? I realize that when two gases are mixed, they evenly disperse, but how effective is this through the isolation manifold from one tank to another?