[Dsg-ft] nitrogen purge and humidity

[Amanda Hoebel]

Hi Raffaella,

We have started the gas flow and will monitor the humidity throughout the day. 

Regards,
Amanda

----- Original Message -----
From: "raffaella devita" <Raffaella.Devita at ge.infn.it>
To: "dsg-ft" <dsg-ft at jlab.org>
Sent: Wednesday, June 21, 2017 4:22:27 AM
Subject: [Dsg-ft] nitrogen purge and humidity

Dear All,
as of last week, we were authorized to restart using the FT-Cal nitrogen 
purge from the bottle in the EEL building. We reconnected therefore the 
bottle to the bubblers located under the calorimeter to ti inlet tube 
and check that gas was flowing normally. Since we were leaving at the 
end of last week we could not do much more while to further check the 
system it would be useful to check that the humidity inside the 
calorimeter, now monitored via the compact rio goes down while gas is 
flowing. Could you help us doing this check. It would be sufficient to 
start the gas flow, setting it to give a flow of ~  cm3/s ( few bubbles 
per second in the glass bottle connected to the inlet line) and monitor 
the humidity sensor output for let's say 6-10 hours.
Let us know if that is possible and if necessary we can provide more 
information.
Thanks.
Best regards,
     Raffaella and Marco
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