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Yeah you're right Cliff,
my maths should be better than that.
The ZG106A-M is up to 10,000ppm ( 1% ) range &
the ZG106A-H (under development) is up to 50,000ppm (5%)
5% should be adequate shouldn't it? Phils document
on life support says that in laboratory tests on his bellows add
system the CO2 level fluctuated from ...25% to
...55% with mild exercise: so at a 1% level you'd know something was
wrong
with your scrubber & at 2.5% you should be
aborting the dive.
Mike, I looked at the link you posted; only
one unit did CO2 the others were CO (carbon monoxide). The CO2 unit the
M2
was a stand alone / transmitter. Looked pretty
expensive & wrong voltage for me.
I was looking at another unit on a differant site,
the Telaire 7001 but it had the same accuracy as the ZG106 models & was
$430-US.
The ZG106 products have TUV certification as
laboratory medical devices, so though they're cheap they should be
reliable.
Outdoor CO2 levels range from 300 to 400 ppm
(normally round 385ppm) so a check could be done on the unit before
diving.
Alan
----- Original Message -----
Sent: Friday, September 04, 2009 8:35
AM
Subject: Re: [PSUBS-MAILIST] co2
monitors
3000 ppm is 0.3% not 3%.
Cliff Redus
Hi Emile,
The measurement range on the ZG 106 is 0 -
3000ppm wich is 3%
the figure Nasa recommends as the highest short
term exposure level.
The resolution is 1ppm up to
10ppm.
The accuracy is stated as + or - 50ppm wich is
...05%.
Has an alarm you can set too.
Alan
----- Original Message -----
Sent: Friday, September 04, 2009 5:35
AM
Subject: RE: [PSUBS-MAILIST] co2
monitors
Alan,
Co2 monitor
should measure at least 3 % or 30.000 ppm.
Emile
Hi all, especially Brent who
doesn't seem to sleep at night.
Found this cheap CO2 monitor
while sorting out my life support
system.
I could only find one price US
$62- & have a price inquiry in at the
moment.
Thanks for the descriptions of
how the acrylic conning tower was set up, Brent &
Antoine.
Looks a lot cheaper &
easier than a dome.
WARNING, Material and
ideas contained in this email are for entertainment, and artistic value
only.
Do not try this at home
with out proper supervision. Producer of material here contained, has been
seen with mountain folk with no good
reason.
Warning!!!!
Many colours are used in the "art" pictures, that might make you
crave a rainbow
popsicle.
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