[Dsg-htcc] low pressure on 04/16

[Amrit Yegneswaran]

thanks. 
have good evening 



From: "Marc Mcmullen" <mcmullen at jlab.org> 
To: "Amrit Yegneswaran" <yeg at jlab.org> 
Cc: dsg-htcc at jlab.org 
Sent: Monday, April 16, 2018 5:04:17 PM 
Subject: Re: [Dsg-htcc] low pressure on 04/16 



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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