Ultrasonic depth gauge for liquids under high pressure

Details Ultrasonic depth gauge for liquids under high pressure Ultrasonic depth gauge for liquids under high pressure

1986-02-13

1988-09-13

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

310338, 367908, G01F 2328

Patent

active

047700386

ABSTRACT:
An ultrasonic depth gauge 20 for liquids under high pressure is comprised of a transducer assembly 21 and a supporting electronics unit 22. The transducer assembly is mounted into the bottom wall of a storage vessel 12 with its resonating surface directly exposed to the highly pressurized liquid 13 in the vessel. The transducer assembly consists of a conventional transducer element 38 rigidly bonded to the inside wall of a bored out conventional high-pressure plug 30 thereby forming a composite resonator 50. The element and the plug wall resonate as one upon electrical excitation of the element while the transducer element is completely shielded from any exposure to the liquid under high pressure. The composite resonator sends a vibration up to the surface of the liquid where it is reflected back to the composite resonator. The supporting electronics unit measures the vibration round-trip transit time which is proportional to the depth 15 of the liquid.

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