Ultrasonic level gauge

Details Ultrasonic level gauge Ultrasonic level gauge

1988-08-29

1990-03-20

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

340621, 367908, G01F 2328

Patent

active

049090801

ABSTRACT:
An ultrasonic level gauge that measures the level of a test surface inside a tank. A guiding pipe guides the ultrasonic wave transmitted by an ultrasonic transceiver to the test surface, and guides the ultrasonic wave reflected by the test surface back to the ultrasonic transceiver. An extended portion that extends the propagation distance of the ultrasonic wave guided by the guiding pipe may be provided on the basal portion of the guiding pipe. In this case, the ultrasonic transceiver is provided at the opening at the end of the extended portion. Also, a helical portion or a slanting portion may be provided in the guiding pipe to make the ultrasonic wave transmitted by the ultrasonic transceiver enter the test surface in a slanting direction.

REFERENCES:
patent: 3017771 (1962-01-01), Bonhomme
patent: 3208281 (1965-09-01), Kalmus et al.
patent: 3222929 (1965-12-01), Kalmus et al.
patent: 4090407 (1978-05-01), Shuler et al.
patent: 4545245 (1985-10-01), Sharp
patent: 4679430 (1987-07-01), Scott-Kestin

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