Measuring and testing – Liquid level or depth gauge
Patent
1983-03-07
1984-12-11
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
34087016, 364509, 364571, 367908, G01F 2328, G01S 1500
Patent
active
044870655
ABSTRACT:
A storage tank level monitoring apparatus and method for determining fluid levels in a storage tank. The apparatus of the present invention includes a magnet coated with rubber for holding a pivotally mounted housing to the interior of the storage tank and an ultrasonic transducer contained within the housing for generating acoustic pulses and for receiving reflections of the acoustic pulses for producing an analog signal proportional to the reflections, a string carrying a number of reference disks vertically oriented below the housing for producing a series of reflected acoustic signals from each reference disk, and a processor connected to the ultrasonic transducer for activating the transducer and for analyzing the reflected pulses for calibrating the apparatus for environmental changes in the atmosphere above the stored fluid and for determining the level of the stored fluid in the tank. The method of the present invention includes the steps of receiving reflected pulses from each reference disk only during certain window time intervals and to calibrate the system by adjusting for environmental conditions between the transducer and the fluid level.
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Beard Steven A.
Carlin John A.
Mesch William G.
Stephens Tracy R.
Thompson Randall D.
Cypher Systems
Dorr Robert C.
Yasich Daniel M.
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