[PSUBS-MAILIST] CO in cabin

Fri Oct 2 12:28:21 EDT 2015

I had a multi gas monitor (H2S, O2, CO, CH4) alarm on flatus once when I had it mounted on my back pocket. To my recollection, it was the CO alarm that tripped. Not implying anything. Just sayin'...

Sean

On October 2, 2015 10:14:23 AM MDT, James Frankland via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Hi Emile,
>
>Yes, there was condensation when I was being towed out.  (I think I was
>breathing hard as it was a horrible tow).  The alarm was sounding then.
>
>Hopefully that is the problem.   I just cant think where any CO would
>come
>from.
>
>I will do a test and see.
>
>Thanks
>james
>
>On 2 October 2015 at 16:12, Emile van Essen via Personal_Submersibles <
>personal_submersibles at psubs.org> wrote:
>
>> James,
>>
>>
>>
>> I saw some condensation on de vid.. You quickly have 95 %
>>
>> Never read somewhere that CO was a issue in a electric sub
>>
>>
>>
>> Regards, Emile
>>
>>
>> ------------------------------
>>
>> *Van:* Personal_Submersibles [mailto:
>> personal_submersibles-bounces at psubs.org] *Namens *James Frankland via
>> Personal_Submersibles
>> *Verzonden:* vrijdag 2 oktober 2015 17:05
>> *Aan:* Personal Submersibles General Discussion
>> *Onderwerp:* Re: [PSUBS-MAILIST] CO in cabin
>>
>>
>>
>> Hi Antoine.
>>
>>
>> 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.
>>
>>
>> Thanks
>>
>> James
>>
>>
>>
>> On 2 October 2015 at 15:43, Antoine Delafargue via
>Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Hi James,
>> I am no specialist but when I searched for meters for Pilot Fish, I
>> was told that
>> these type of meters based on electrochemical cells are not be rated
>> for near 100% humidity, since they can misidentify water vapor or
>> droplets as CO2 (CO I don t know but could be similar effect)
>> Did you record humidity level?
>>
>> regards
>> Antoine
>>
>> On 10/2/15, James Frankland via Personal_Submersibles
>> <personal_submersibles at psubs.org> wrote:
>> > Hi All
>> >
>> > Last dive at the weekend I was using an MSA Orion plus, multi gas
>meter.
>> > This came from my uncle who is a safety officer at a UK coal mine. 
>Its
>> all
>> > in current calibration etc.
>> >
>> > Anyway, I am using it really for the O2 sensor, however, it also
>has 3
>> > other sensors for use in the mine.  Carbon Monoxide, Methane and
>> Hydrogen.
>> > (pity it doesn't have the CO2 sensor instead).
>> >
>> > After about 10 mins of diving, I was getting an alarm of 30ppm CO. 
>This
>> is
>> > the level deemed safe for an 8 hour exposure to CO.  (Time weighted
>> > average).
>> >
>> > So, I wasn't particularly worried, but I am mystified where the CO
>is
>> > coming from, even a small amount.  Battery pods are sealed shut. 
>Could
>> it
>> > be the scrubber?  The absorbent is calcium hydroxide and lime.
>> >
>> > Any ideas anyone?
>> > Thanks
>> > James
>> >
>> >
>> > 
>> >
>>
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>
>
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