Liquid-level sensing device

Patent · Tue Sep 16 04:00:00 EDT 1975

OSTI ID:4155483

Goldfuss, G T

This invention relates to a device for sensing the level of a liquid while preventing the deposition and accumulation of materials on the exterior surfaces thereof. Two dissimilar metal wires are enclosed within an electrical insulating material, the wires being joined together at one end to form a thermocouple junction outside the insulating material. Heating means is disposed within the electrical insulating material and maintains the device at a temperature substantially greater than that of the environment surrounding the device, the heating means being electrically insulated from the two dissimilar thermocouple wires. In addition, a metal sheath surrounds and contacts both the electrical insulating material and the thermocouple junction. Electrical connections are provided for connecting the heating means with a power source and for connecting the thermocouple wires with a device for sensing the electrical potential across the thermocouple junction. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-33-011274
• Assignee: to U.S. Energy Research and Development Administration
• Patent Number(s): US 3905243; PAT-APPL-396,339.
• OSTI ID: 4155483
• Country of Publication: United States
• Language: English

Related Subjects

*LEVEL INDICATORS-- DESIGN
*LIQUID METAL COOLED REACTORS-- LEVEL INDICATORS
*LIQUID METALS-- LEVELS
210500* --Nuclear Power Plants--Power Reactors
Breeding
ELECTRICAL INSULATION
HEATING
LIQUIDS
N46400 -- Instrumentation--Miscellaneous Instruments
N77500* --Reactors--Power Reactors
Breeding
SODIUM
THERMOCOUPLES