Re: final getter

["A. Vasilyev" <vassilie@mail.pnpi.spb.ru>]

Dear Peter,

Tuesday, July 26, 2005, 5:55:48 AM, you wrote:

PK> Dear friends,

PK> As discussed we should consider putting a filter immediately 
PK> before the TPC input, if the connecting pipes are really the 
PK> source of ~100ppb moisture.

PK> I looked at the websites of some companies and would ask for
PK> quotations including delivery time if you find some getters
PK> useful. Please advise.

PK> http://www.puregastechnologies.com/microt.htm
PK> http://www.nupure.com/Pages/PF_Series.htm
PK> http://www.mykrolis.com/catalogue.nsf/docs/M1078
PK> http://www.vici.com/matsen/matsen.pdf


PK> Best regards from hot Illinois

PK> Peter

Using the filter immediately before TPC is a good idea. In any case we
planed to use mechanical filter there.   And (for example NuPure)
these filters works as a mechanical filter better then 3 nm.

We can not say now we really have 100 ppb or we simply did not dry the
humidity sensor.
If in the serious experiment "in dubio non pro reo" (the doubt is interpreted not in
favour of accused) and it will be better to install this filter.

More or less clear the situation with humidify sensor will be clear at
the end of September.

Pressure drop is reasonable. At our fluxes it is not more then 3-4 psi.

NuPure is more attractive (from my point of view).   For the better
understanding of the situation can we understand:
1. what is the price for hydrogen Nupure model  1000 PF  and 2000 PF?
2. delivery time....

3. pressure drop for these models at 10 bar of hydrogen and 5 slpm
flux?
4. I did not understand about N2 purification. It is optional and (as
I understood not at room temperature). Can we clarify situation with
N2?

With best regards   Sasha.



-- 
Best regards,
 A.                            mailto:vassilie@mail.pnpi.spb.ru