<div dir="ltr"><div>Hi Antoine.</div><div><br>I have got a humidity meter, but I wasn't really looking at it. It wasn't that high. It was on the tow out, but for the dives I wasn't really steamed up or anything inside. However, it could be something like that. Maybe I will do a dry dive and test it.</div><div><br>Thanks</div><div>James</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 2 October 2015 at 15:43, Antoine Delafargue via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi James,<br>
I am no specialist but when I searched for meters for Pilot Fish, I<br>
was told that<br>
these type of meters based on electrochemical cells are not be rated<br>
for near 100% humidity, since they can misidentify water vapor or<br>
droplets as CO2 (CO I don t know but could be similar effect)<br>
Did you record humidity level?<br>
<br>
regards<br>
Antoine<br>
<br>
On 10/2/15, James Frankland via Personal_Submersibles<br>
<span><<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br>
> Hi All<br>
><br>
> Last dive at the weekend I was using an MSA Orion plus, multi gas meter.<br>
> This came from my uncle who is a safety officer at a UK coal mine. Its all<br>
> in current calibration etc.<br>
><br>
> Anyway, I am using it really for the O2 sensor, however, it also has 3<br>
> other sensors for use in the mine. Carbon Monoxide, Methane and Hydrogen.<br>
> (pity it doesn't have the CO2 sensor instead).<br>
><br>
> After about 10 mins of diving, I was getting an alarm of 30ppm CO. This is<br>
> the level deemed safe for an 8 hour exposure to CO. (Time weighted<br>
> average).<br>
><br>
> So, I wasn't particularly worried, but I am mystified where the CO is<br>
> coming from, even a small amount. Battery pods are sealed shut. Could it<br>
> be the scrubber? The absorbent is calcium hydroxide and lime.<br>
><br>
> Any ideas anyone?<br>
> Thanks<br>
> James<br>
><br>
><br>
> <br>
><br>
<br>
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