[PSUBS-MAILIST] scrubber performance

[hank pronk]

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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