Line 1 was replaced by line 1 |
- !Automatic Liquid Nitrogen Fill Mechanism |
+ !Automatic Liquid Nitrogen Fill |
At line 2 added 10 lines. |
+ Automatic nitrogen fill is controlled by the Cryostat |
+ Control Unit (CCU). It uses a two point sensor with an |
+ overheated platinum sensor. |
+ |
+ The values shown in SEA Client (N2_upper / N2_lower) |
+ are the temperatures of the sensors, beeing about 80 K |
+ when immersed and above 100 K else. |
+ |
+ !Old mechanism: |
+ |
Line 4 was replaced by line 14 |
- and a timer box. Every 8 hours a filling is started, and stopped |
+ and a timer box. Every 8 hours the filling is started, and stopped |
Lines 6-7 were replaced by lines 16-17 |
- in oder to avoid damage in case of sensor damage. Ff the sensor has a leak |
- the switch would indicate "vessel full", which is also a safety feature. |
+ in oder to avoid damage in case of sensor failure. A sensor with a leak |
+ would indicate "vessel full", which is also a safety feature. |