Cryogenic fluid measurement
AssigneeHewTech Electronics, LLC
InventorScott Hewelt
Life of this patent
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Abstract
A device for measuring a cryogenic liquid level is disclosed. The device includes an inner cylindrical tube, an outer cylindrical tube that is coaxial with the inner cylindrical tube, the outer tube separated from the inner tube by an air gap, wherein the air gap is exposed to environmental pressure but sealed against cryogenic liquid, and a pressure transducer in pressure communication with the inner tube. The outer and inner tubes may be inserted into a cryogenic fluid chamber, and the depth of the cryogenic liquid may be determined based on the pressure present in the inner tube and detected by the pressure transducer.
Claims20
A device for measuring a cryogenic liquid level, the device comprising:
- an inner cylindrical tube;
- an outer cylindrical tube disposed around the inner cylindrical tube, the outer tube separated from the inner tube by an air gap, wherein the air gap is exposed to atmospheric pressure and sealed at a distal end of the air gap against cryogenic liquid;
- and
- a pressure transducer in pressure communication with the inner tube.
A device for measuring a cryogenic liquid level, the device comprising:
- a probe comprising:
- an inner cylindrical tube;
- and
- an outer cylindrical tube that is coaxial with the inner cylindrical tube, the outer tube separated from the inner tube by an air gap, wherein the air gap is exposed to atmospheric pressure and sealed against cryogenic liquid;
- a body coupled with the probe, the body comprising a display;
- a pressure transducer in pressure communication with the inner tube;
- and
- a processor in electronic communication with the pressure transducer and the display, the processor configured to cause the display to output a cryogenic fluid depth responsive to an output of the pressure transducer.
A device for measuring a cryogenic liquid level, the device comprising:
- a probe comprising:
- an inner cylindrical tube;
- and
- an outer cylindrical tube that is coaxial with the inner cylindrical tube, the outer tube separated from the inner tube by an air gap, wherein the air gap is exposed to environmental pressure but sealed against cryogenic liquid;
- a pressure transducer in pressure communication with the inner tube;
- and
- a processor in electronic communication with the pressure transducer and the display, the processor configured to cause a display to output a cryogenic fluid depth responsive to an output of the pressure transducer.
Dependencies are inferred from the claim text.