[PSUBS-MAILIST] scrubber performance

[James Frankland]

hi Hank,
Thats good news on the shelf life of the absorbent.  Ive got 6 5L
canisters and was worried they were going to go bad.  Looks like they will
be ok for a while yet!
regards
James

On 31 January 2014 13:33, hank pronk <hanker_20032000 at yahoo.ca> wrote:

>  James,
> Thank you for the clarification.  I was also surprised that the co2 level
> was in the neighbourhood of 5,000ppm when I turned the sensor on.  I
> assumed the air quality would be better with the hatch open while I tinker
> inside. I hooked up my shop vac to the flood valve to suck clean air inside
> before I started my test.
>   Carsten  mentioned one time that he has used 20yr old absorbent.   Gamma
> came with full bottles of absorbent that have to be around 20 yrs old.  I
> experimented with the old material and it worked the same as new stuff.
> Talk about shelf life.
> Hank
>
>
>
>   On Friday, January 31, 2014 3:00:36 AM, James Frankland <
> jamesf at guernseysubmarine.com> wrote:
>   Hi Hank,
>
> Ive got one of Emiles scrubbers.  Holds the sub at 3200 - 3500 and i find
> this quite ok.  I did try an experiment (on land with an assistant
> watching) where i let CO2 get to 7500 -  10000ppm for about half an hour.
> I could tolerate this just, but i wouldnt like it to go any more.
> Kind Regards
> James
>  On 30 January 2014 20:19, Emile van Essen <emile at airesearch.nl> wrote:
>
>   Hank,
>
> Is normal, The CO2 level must rise first before the scrubber warms up and
> starts to work. In cold weather it will take longer and you may consider
> electrical preheating.
> 2300 PPM / 0,23 % is a good figure anyway!
>
> Regards, Emile
>
>   *Van:* Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] *Namens *hank pronk
> *Verzonden:* donderdag 30 januari 2014 19:45
> *Aan:* Personal Submersibles General Discussion
> *Onderwerp:* [PSUBS-MAILIST] scrubber performance
>
>  Is it normal for a scrubber's performance to improve after 15 min or
> so.  My scrubber is maintaining the sub at  2,300 ppm  but started much
> higher like 3,500 ppm.   Is 2,300 ppm on the high side?
>  Hank
>
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