[PSUBS-MAILIST] Oxygen sensors

[S W <stephenwhite20@yahoo.com>]

--- Phil Nuytten <72020.572@compuserve.com> wrote:
> Hi, Alec:
>         Re simply using a demand regulator to
> replenish the oxygen - >am I
> overlooking something?< Yup, you are. There is
> nothing to cause the demand
> valve side of the diaphragm's pressure to be lower 
> than the pressure on
> the other side. .which is required to cause the
> valve to  cycle.
> Phil Nuytten


Could something be rigged up to maintain a constant 1
atm pressure on the other side of the diaphram? Then
when the air pressure dropped, the diaphram would trip
and cycle the valve to equalize the pressure back to 1
atm? It seems like you could easily build a 1 atm
"standard" to use with the regualtor. Am I missing
something as well?



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