<html><body><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000">Hello Marco Contalbrigo and Marco Mirazita,<br><br>Would DSG be able to repair or replace Nitrogen volume humidity sensor #7?<br><br>It must be replaced before the final installation of the front panels. We will not be able to fix or change the sensor after RICH is sealed.<br><br>Best regards,<br>Tyler<br><br><hr id="zwchr" data-marker=""><div data-marker=""><b>From: </b>"Tyler Lemon" <tlemon@jlab.org><br><b>To: </b>"dsg-rich" <dsg-rich@jlab.org><br><b>Sent: </b>Thursday, December 14, 2017 7:47:31 AM<br><b>Subject: </b>[Dsg-rich] Nitrogen volume humidity sensor #7<br></div><br><div data-marker=""><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div>Hello,<br></div><br><div>December 12 at ~1:00PM, nitrogen volume humidity sensor #7 jumped to ~60% humidity. This humidity reading appears to be incorrect as nitrogen volume humidity sensor #14 on the same board as humidity #7 remained lower near the value of all other humidity sensors.<br></div><br><div>Since humidity sensor #7 does not appear to be working and its sensor board is in a place accessible while the front panels are removed from RICH we have two options:<br></div><br><div><span style="text-decoration: underline;">Option 1</span> is to remove the bad humidity sensor and solder a new one in its place. Mindy could remove the bad sensor and replace it with a new sensor.<br></div><br><div><span style="text-decoration: underline;">Option 2</span> is to remove the entire sensor board and replace it with a spare board and cable that we have ready to go. The spare board would need to be epoxied in place on the detector shell if this option is chosen.<br></div><br><div>Please let us know which option would be preferred so we can fix the issue.<br></div><br><div>Best regards,<br></div><div>Tyler</div></div><br></div></div><br>_______________________________________________<br>Dsg-rich mailing list<br>Dsg-rich@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/dsg-rich<br></div></div></body></html>