Method and apparatus for determining quantity of liquid in a con

Details Method and apparatus for determining quantity of liquid in a con Method and apparatus for determining quantity of liquid in a con

1995-03-20

1998-04-28

Voeltz, Emanuel T.

Boots, shoes, and leggings

73 173, 73 175, 73304C, 364559, G01F 2326

Patent

active

057453772

ABSTRACT:
A sensor apparatus is described that detects and indicates the volume of cryogenic liquid in a Dewar container independent of the spatial orientation and physical motions acting on the Dewar container. The sensor apparatus comprises a first conductor, preferably positioned adjacent to the container inner shell wall and a second conductor comprising a plurality of axially spaced and concentric endless conductor bands mounted inside the container in a proximately spaced and a parallel relationship with respect to the first conductor. The second conductor bands divide the first conductor into zones that provide a plurality of distinct and separate capacitors. A computer measures the capacitance of each capacitor and compares the individual capacitance measurements to reference capacitance values corresponding to a known volume of cryogenic fluid filled in the container at known angles of inclination.

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