[Dsg-dc] CO2 supply

[Brian Eng]

Sounds like a good idea to me as well; there are available channels on the cRIO in the gas shed we could use for this.

I'm not sure who has the pressure transducer(s) though, is that something that needs to be purchased or already exists somewhere?

Thankfully Dave is already on board, so hopefully it doesn't mess up the DA/pressure system documents to much.



As soon as we have the equipment and the go ahead from Dave to install it, we'll work with the EPICS guys to get it implemented.

> On May 15, 2017, at 2:36 PM, Dave Kashy <kashy at jlab.org> wrote:
> 
> makes sense to me.
> 
> ----- Original Message -----
> From: "Denny Insley" <dinsley at jlab.org>
> To: dsg-dc at jlab.org
> Cc: "Doug Tilles" <tilles at jlab.org>, "Robert Miller" <rmiller at jlab.org>, "kashy" <kashy at jlab.org>
> Sent: Monday, May 15, 2017 2:17:22 PM
> Subject: CO2 supply
> 
> Good afternoon folks, 
> 
>     Well I was going to send email this morning about the DC-Gas pages over the weekend but I think you have all 
> thouroghly covered that issue. I do have one issue I would like to bring up though. Currently the CO2 supply is 
> soely dependent on human interaction to maintain pressure and swap out Dewars. I assume this is a task that will 
> fall mainly on the Hall B staff and specifically the engineering on call personel, most of which are going to 
> have minimal system knowledge starting out. I would like to propose that we add two pressure trancducers to the 
> CO2 supply manifold and pipe the signals into the alarm handler.  This will tell us via alarm when the CO2 dewars
> need attention without having to rely on one of us to check the dewars a couple times a day. Thoughts?
> 
> Regards
> Denny