Question Using a tank transmitter with doubles (twinset)

[BoltSnap]

My transmitter calculates based off volume. Before each dive you enter the type of tank you’ll be diving with.

What computer do you have?

 

[tursiops]

My transmitter calculates based off volume. Before each dive you enter the type of tank you’ll be diving with.

Your transmitter doesn't calculate anyfhing. Your computer does. Sorry, I missed that you had a Garmin.

 

[BlueTrin]

My transmitter calculates based off volume. Before each dive you enter the type of tank you’ll be diving with.

I don’t think it invalidates @tursiops point entirely: his point is that the transmitter only transmits the pressure.

So even if you close the manifold, what happens is that it measures only the pressure on one side. Then when you reopen, it will equalise and show a drop or hike, but then the total volume shown will be pressure x volume so it will correct after you open the manifold. (Or at least it should)

 

[Easdem]

I think you are way overthinking it. If you isolate, you have lost (or are losing) one of your cylinder's gas supply. The dive is over...The transmitter will give you pressure on the RT side...No need to know the RMV rate...If you lose the RT side, the SPG on the left will provide that information.

Even though I dive with a transmitter, I check the SPG VS the displayed pressure. I once caught LT side roll off that way.