[Dsg-ltcc] LTCC graph

[Marc Mcmullen]

Hi Bob,

We are still working on updates both the software and the cRIO. At some point today we need to reboot the Gas Shed cRIO and maybe the Forward Carriage. Please let us know it is ok for testing and rebooting.

In addition while you are working out the C4F10 transfer line issues, I wanted to confirm with you that this issue is just localized to part of the system outside of the Hall. Morgan and I discussed the issue of the gas condensing last week and he informed me that the gas is warmed up enough by the time it gets to the hall to not be an issue with the MFCs (ie...last winter's MVT problems).

Looking at the flow data from the weekend, both sectors low pressure set points were set to 1.3 iwc (in the afternoon on 2/1), S3 has flowed for 13:20 (min) at 1 L/m. S5 has flowed for 2:19 (min) at 1 L/m. The C4F10 Return has flowed for 5 minutes at 2 L/m, as the pressure in S5 exceed 2.5 iwc early (01:46 am) today.

Please let me know when the scale will be re-zeroed so that it can be tracked as well.

Thanks,
Marc
________________________________
From: Bob Miller <rmiller at jlab.org>
Sent: Monday, February 4, 2019 10:12 AM
To: Brian Eng; Marc Mcmullen
Subject: Re: LTCC graph


Thanks guys


On 2/4/2019 9:57 AM, Brian Eng wrote:
This is saved as a config (under the clasrun account) if you want to look at the data yourself.

While the scale went down a bunch there was hardly any actual flow to match that.

[cid:part1.836EC8EE.9046797D at jlab.org][cid:part2.C51517C5.78B939D7 at jlab.org]

On Feb 4, 2019, at 9:43 AM, Marc Mcmullen <mcmullen at jlab.org<mailto:mcmullen at jlab.org>> wrote:

Hi Bob,

Here are the plots for the scale and supply pressure from the weekend.

Marc
From: Bob Miller
Sent: Monday, February 4, 2019 8:36 AM
To: Marc Mcmullen
Cc: Brian Eng
Subject: LTCC graph

Hi Marc,

Can you provide a graph of the supply pressure and scale weight from Friday to Monday please?  Throw in outside temperature also.

We are having an issue with c4 F10 condensing in the transfer lines.

Thanks,
Bob
<0201_0204.JPG>


--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586


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