[dsg-svt] Nitrogen line monitoring/control

[Brian Eng]

If it arrives on Monday, which I don't expect as the lead time was listed as 3 weeks, it will get installed.

The MFC is planned to be installed on Tuesday though.

We have some regular RTDs if you want to see if someone from Hall B Engineering can come up with something temporary?

----- Original Message -----
> From: "Yuri Gotra" <gotra at jlab.org>
> Cc: "dsg-svt" <dsg-svt at jlab.org>, "Nathan Baltzell" <baltzell at jlab.org>
> Sent: Friday, January 26, 2018 2:46:23 PM
> Subject: Re: [dsg-svt] Nitrogen line monitoring/control

> Brian,
> 
> The PR is signed. Would it be possible to get this RTD on Monday? David
> suggested to install it (and the MFC) next Tuesday. Thank you
> 
> 
> On 1/23/18 2:22 PM, Brian Eng wrote:
>> The MFC is ready to be installed. Just need to do some code changes when moving
>> it from EEL to the Hall.
>>
>> We'll need to order something to measure the temperature of the gas,
>> unfortunately I couldn't find anything in stock.
>>
>> I submitted a PR for an RTD here:
>> https://misportal.jlab.org/reqs/pr/viewPrSignatures.do?prNum=374798
>>
>> Nathan,
>>
>> I was planning on using one of the spare channels that already exist/is read-out
>> on the V450s: B_SVT_ENV_TEMP_SPARE1_SL7
>>
>> I'm not sure if it's easier to rename or make a new PV, but can you make a PV
>> for this (archived with 0.2 C dead-band): B_DET_SVT_GAS_N2_TEMP
>>
>>> On Jan 23, 2018, at 11:05 AM, Yuri Gotra <gotra at jlab.org> wrote:
>>>
>>> Yesterday a nitrogen cooling setup has been installed. In order to optimize
>>> performance of the cooling the following modifications are required. An MFC
>>> need to be installed on the line prior to the heat exchanger. Nitrogen
>>> temperature monitoring need to be installed after the heat exchanger prior to
>>> the split of the lines. These modifications need to be propagated to the CSS
>>> interface. Thank you