Hot wire sensor combined with voltage-comparator circuit monitors liquid level in cryogenic-fluid storage tanks. Sensor circuit adaptable to different liquids and sensors. Constant-current source drives current through sensing probe and fixed resistor. Voltage comparator circuits interpret voltage drops to tell whether probe is immersed in liquid and is current in probe.
Level Sensor for Cryogenic Fluids
NASA Tech Briefs ; 7 , 3
1983-08-01
Miscellaneous
No indication
English
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