[Dsg-htcc] low pressure on 04/16

[Marc McMullen]

The HTCC had a low pressure alarm early in the morning, Yuri and Denny 
called to ask if there was a problem with the flow. There was no issue 
with the flow.

-Marc


On 4/16/2018 4:50 PM, Amrit Yegneswaran wrote:
> so what was the issue marc?
> you may wish to state the problem, even if you were phoned.
>
>
> ------------------------------------------------------------------------
> *From: *"Marc Mcmullen" <mcmullen at jlab.org>
> *To: *dsg-htcc at jlab.org
> *Sent: *Monday, April 16, 2018 3:58:38 PM
> *Subject: *[Dsg-htcc] low pressure on 04/16
>
> Hi Denny and Yuri,
>
> I have checked the Mya archive, during the period of low pressure, the
> mass flow controller was supplying 10lpm. It is set for 10lpm, so no
> issue there. I have included 4 screenshots from MYA, three are the same
> shot with different y-axis scales. One is a close up of the event.
>
> Also, that ambient pressure signal name is on the right side of the
> graph, we use it a lot to check for coincidence with detector pressures.
>
> -- 
> Marc McMullen
> Detector Support Group
> 757-269-7738
>
>
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-- 
Marc McMullen
Detector Support Group
757-269-7738

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