Difference between revisions of "Cryogen Liquid Level Monitors"

From Nuclear Physics Group Documentation Pages
Jump to navigationJump to search
Line 5: Line 5:
  
 
[[Image:FrontofLevelMeters.jpg|400px]] [[Image:BackofLevelMeters.jpg|400px]] [[Image:HockeyPuck.jpg|400px]]
 
[[Image:FrontofLevelMeters.jpg|400px]] [[Image:BackofLevelMeters.jpg|400px]] [[Image:HockeyPuck.jpg|400px]]
[[Image:LN2Cable_2.jpg|400px]]
+
[[Image:LN2Cable_2.jpg|400px]] [[Image:LN2Cable.jpg|400px]]
  
 
== LHe Level Meter: ==
 
== LHe Level Meter: ==

Revision as of 15:38, 27 January 2017

LN2 Level Meter:

The liquid nitrogen level meter probe is a Magnex Scientific E5031. The probe is a continuous analog readout of the liquid nitrogen level. The active sensor area of the probe is approximately 1 meter. Read-out of the probe is done via a "hockey-puck" like attachment that screws into the top of the ~1m long probe rod. The probe is calibrated using a combination of a Zero offset adjustment on the hockey-puck and Gain adjustment on the back of the analog read-out. Typically the meter is calibrated using a known liquid level. The ammonia sample dewar is a good place to calibrate the liquid level if you think it is off. We usually only use the meter as a rough estimate of the liquid level so the calibration doesn't have to be super precise.


FrontofLevelMeters.jpg BackofLevelMeters.jpg HockeyPuck.jpg LN2Cable 2.jpg LN2Cable.jpg

LHe Level Meter: