[Dsg-rich] Compressor Air quality

[Tyler Lemon]

Hello, 

The PPM sensor is connected to the N2 Volume cRIO and should be on EPICS, but as Brian said yesterday, it has been reading zero ppm. 

I do know that the moisture concentration sensor can be read on the LabVIEW UI or the Distributed System manager under network shared variables. Earlier this week when debugging the update for the interlock system using the LabVIEW UI, I noted that the water concentration in the tank was ~1600 ppm then as well. 

Since it can be read on the LabVIEW UI, it's probably some sort of issue with the cRIO EPICS client or the IOC preventing it from being archived. Once the EPICS issue is resolved, it should be archived like all of the other RICH PVs. 

Best regards, 
Tyler 


From: "Brian Eng" <beng at jlab.org> 
To: "Amrit Yegneswaran" <yeg at jlab.org> 
Cc: "dsg-rich" <dsg-rich at jlab.org>, "Mirazita Marco" <Marco.Mirazita at lnf.infn.it> 
Sent: Friday, May 11, 2018 2:28:21 PM 
Subject: Re: [Dsg-rich] Compressor Air quality 

Marc and I tried to remove the bottom plug on the tank, but it has some sort of sealant (epoxy?) on it and we couldn't remove it with hand tools. 

We removed one of the smaller side ones near the bottom and at least visually there is no condensation in the tank. 

The plug was reinstalled with teflon tape; we'll need to leak check it once the compressors are turned on again. 

FYI the moisture sensor was reading high 1600s PPM on it's local display before and after we removed the plug. 

> On May 11, 2018, at 1:20 PM, Amrit Yegneswaran <yeg at jlab.org> wrote: 
> 
> george, 
> we should do both. 
> check for condensation as vicenzo suggests, and hook up the instrumentation. 
> amrit 
> From: "George Jacobs" <jacobsg at jlab.org> 
> To: "Vincenzo Lucherini" <Vincenzo.Lucherini at lnf.infn.it>, "Tyler Lemon" <tlemon at jlab.org> 
> Cc: "dsg-rich" <dsg-rich at jlab.org>, "Mirazita Marco" <Marco.Mirazita at lnf.infn.it> 
> Sent: Friday, May 11, 2018 1:02:02 PM 
> Subject: Re: [Dsg-rich] Compressor Air quality 
> 
> Why not just properly connect up the ppm H2O sensor that was installed in the tank last year? 
> 
> On 5/11/2018 9:35 AM, Vincenzo Lucherini wrote: 
> Hi, 
> 
> now that the AIR Compressor is OFF, after several months of continuous operation, it would be worth to check (if not already done) for any presence of water (from condensation) in the bottom of the tank. This information could be useful to better understand the quality (dryness) of the air coming out from the Compressor. 
> 
> V. 

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