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Hi Nick,<br>
<br>
The CO2 dewar is empty and requires replacement. There are 3 dewars
at 96B gas shed. I recommend bringing 2 into the hall. The dewars
can be placed on the floor, under the space frame, just upstream of
the HTCC.<br>
<br>
The 1" ball valve at the bottom of the HTCC vessel must be closed to
purge the HTCC. The detector volume will not purge with that valve
open to the atmosphere. Air will diffuse into the detector volume
with that valve open.<br>
<br>
George<br>
<br>
<div class="moz-cite-prefix">On 1/23/2017 8:45 AM, nick markov
wrote:<br>
</div>
<blockquote cite="mid:21278556-7714-418A-BA22-D758F3C73B1D@jlab.org"
type="cite">
<pre wrap="">Dear All,
HTCC has been moved to its place in the hall, hooked to the gas bottle and connected to an ethernet.
Most of the things work fine, but there are two things we worry about:
- MFC has to be tuned to a C02 instead of nitrogen to have a correct flow readings;
- pressure gauge oftentimes displays negative readings, which looks suspicious.
Thank you very much!
Nick.
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7115
(cell) 757-876-0480
(email) <a class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a></pre>
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