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Re: [PSUBS-MAILIST] co2 monitor source
Cliff: Thanks. I use the same Jabsco blower as an air
circulator. I'll process all your information and come
up with a plan. I'll post the outcome.
As for the bubbles problem, I intend to test marine
Rain-X, but haven't yet. I just re-gasketed my bow
dome and test day was scrubbed due to weather.
Alan
--- Cliff Redus <dr_redus@devtex.net> wrote:
> Alan
>
> > I like the Nuytten method, too. I'm planning to
> revamp
> > my O2/CO2 system this year. Any thoughts on a
> good,
> > compact scrubber for my tiny, single-place
> Explorer?
>
> I have seen some face mask type units that have the
> cartridge in the mask
> but I don't know of any non face mask complete
> units. What I have chosen to
> do is use a transparent cartridge holder from
> Aqua-Pure (AP12T) and make my
> own cartridges. The clear lexan bowl lets you
> monitor the color change in
> the absorbent. And the size allows me to have my
> normal mission duration (7
> hours) in one cartridge. I then store the remaining
> cartridges to give me
> 72 hours of emergency time. I am using a marine
> compact PVC inline blower
> from Jabsco (12 VDC, 3" In-line, model 3048900000)
> to circulate air through
> cartridge holder and cartridge. My intake point is
> the lowest part of my
> boat at the stern and my exhaust point is directed
> blow across my bow
> viewport (Busby indicated that this might help keep
> the viewport clear). I
> have some concerns that the blower may be to noisy
> and not efficient at the
> reduced flowrate caused by the head loss across the
> absorbent. If it is to
> loud, I will look or another. Maybe we can get Alec
> to tell us what he is
> using to circulate air in his boat? I know he is
> also building his own
> system.
>
> >Also,would you use a mechanical or
> electronicpressure
> > sensor?
>
> I am using 600-1100mbar barometric pressure sensor
> from Omega (
> PX2760-600A5V ). This sensor has an accuracy of
> +/- 0.25% span with 0.1
> to 5.1 VDC signal output (3-wire). Because I am
> using a PLC, I can bring the
> cabin pressure signal in as an analog input and send
> out from the PLC a
> digital output that activates the O2 solenoid valve.
>
> If you find an off the shelf scrubber system for
> small cabins, please post.
>
> On a previous thread, did you every find and test a
> solution for your
> problem of air bubbles sticking to your bow
> viewport?
>
> Cliff
>
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