Measuring and testing – Liquid level or depth gauge – Thermal type
Patent
1996-08-26
1999-06-01
Chilcot, Richard
Measuring and testing
Liquid level or depth gauge
Thermal type
374 54, G01F 2300, G01N 2500
Patent
active
059089857
ABSTRACT:
Apparatus and a method of operating any structural configuration of a heater and array of temperature sensors to measure with high accuracy, the level of stratified liquids like water and oil or water and gasoline and non-stratified liquids, liquid temperature, other liquid properties and detect ice formation on aircraft surfaces. Thin and narrow strips of dissimilar material will be used for the heater, array of temperature sensors, mount, and coating. The connecting wires to and from the apparatus will be from the same material. Simultaneous measurements from all the temperature sensors, before and after heat is applied, will be used to generate accurate temperature profiles for the entire configuration and not just from two adjacent temperature sensors. Different features of the temperature profiles will determine accurately the liquid level, liquid temperature and other liquid properties. Apparatus of the invention may also be used to detect ice-formation.
REFERENCES:
patent: 2279043 (1942-04-01), Harrington
patent: 3279252 (1966-10-01), Barlow
patent: 5730026 (1998-03-01), Maatuk
Chilcot Richard
Worth Willie Morris
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