[Dsg-hallb_magnets] Torus Cernox jumped to 325 K and recovered

[Ruben Fair]

Hi Tyler, 

Thank you for continuing to monitor this situation. 

I agree with your suggestion to continue monitoring to obtain more data before closing the investigation. 

Regards 

Ruben 





From: "Tyler Lemon" <tlemon at jlab.org> 
To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org> 
Sent: Wednesday, May 31, 2017 7:39:33 AM 
Subject: [Dsg-hallb_magnets] Torus Cernox jumped to 325 K and recovered 

Hello, 

This morning, I noted that a Cernox had jumped to 325 K and automatically recovered. All Cernoxes are reading a normal temperature value now. 

>From the LabVIEW latching indicators, the Cernox TR817D3HB1 in LV Chassis 3 was the sensor that jumped to 325 K. However, I cannot find in MyaViewer where that Cernox or any Cernox read 325 K recently. 

Since there is only Brian's subVI that targets a fixed voltage for Cernox excitations, it seems that just using a fixed target voltage allows a Cernox to automatically recover if it jumps to 325 K. 

Despite the fixed voltage allowing the Cernox to recover, it might be a good idea to continue monitoring the Cernoxes to observe another instance of a Cernox automatically recovering that is recorded in MyaViewer before closing the 325 K error investigation. 

Best regards, 
Tyler 


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