Aeris A1 SPG fluctuation

[cdreamer]

I have a customer that purchased 3 Aeris A1's from an online
company and is concerned about fluctuations in the SPG.
Is it normal for the A1's pressure gauge needle to move
when diver inhales and exhales? All 3 do the same thing
and he has grave concerns over this issue. Any input
would be greatly appreciated as I am completely unfamiliar
with this product.

 

[tstormdiver]

Actually sounds like their air may not be turned on all the way. If the valve is just cracked open, any SPG will do this. It will draw down towards 0 on inspiration & then the pressure will then rise as the pressure fills the regulator again.

 

[cdreamer]

Thanks Tammy,
That's what I would have thought, but this is not the case.
All 3 regs are doing this and I believe that the online dealer
told him this was normal.

 

[cdreamer]

Can anyone from Aeris address my question?