Re: Recirculating Desiccant

[Tom Droege <tdroege2@earthlink.net>]

Edwin,

Anhydrous calcium sulfite.  "Drierite".  There is a filter at each end of 
the "Drierite" tube, and a cotton plug in the camera.

Tom Droege

At 11:18 AM 8/8/02 -0400, you wrote:
>Tom,
>
>What desiccant are you using and are you filtering the air going back into
>the CCD chamber.
>
>Edwin Stewart
>----- Original Message -----
>From: "Tom Droege" <tdroege2@earthlink.net>
>To: <tass@listserv.wwa.com>
>Sent: Thursday, August 08, 2002 8:16 AM
>Subject: Recirculating Desiccant
>
>
> > Last night I ran for the first time with the pump that recirculates the
>air
> > through the desiccant.  This is definitely the way to run.  The desiccant
> > was not noticeably pink after running for several hours.  The images were
> > clean and free of ice crystals.  Congratulations to Michael R. for
>thinking
> > of this.  (Even though he thought that was the way I designed it.)
> >
> > I recommend that you all change the desiccant loop to recirculate.  I had
> > no trouble modifying a fish tank bubbler to recirculate.  I just drilled
> > and tapped a 1/8 NPT hole in the case and installed a fitting.  Then I
> > glued everything together with RTV.  First tests are that this works fine.
> >
> > Tom Droege
> >
> >
> >