It can be run in a setting without LHe (in which it would use the Measuring VI to act as a level probe) or with LHe (in which an actual level probe would be measuring the amount of LHe in the helium reservoir in the nose and feeding that information into the Response VI). This is the larger of the two VIs and it interacts with the instrumentation involved, like the run valve itself. It reads the current level from the Measuring VI, and reacts in order to ensure that the level stays near a user-specified target level. The Response VI controls the run valve position.This is done by running two separate Virtual Instruments in unison, a Measuring VI and a Response VI. LabVIEW is used to provide a means of automatically measuring and responding to the helium level inside the tank. The run valve has can have any position between 0 and 3 'turns', with 0 turns being completely closed and 3 turns being completely opened.
The level of liquid helium is controlled by the position of the run valve, which allows it to flow from the separator to the nose (for more information on this process, follow THIS LINK and find Low Temperature: Cryogenics ). In order to control the amount of liquid helium in the system at any given moment, a user interface with the platform LabVIEW is needed.
