Apparatus and method of measuring the level of a liquid

Details Apparatus and method of measuring the level of a liquid Apparatus and method of measuring the level of a liquid

1983-07-18

1984-12-25

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

73304R, 324 585B, G01F 2328

Patent

active

044896018

ABSTRACT:
An apparatus and method for measuring the height of a liquid above a reference level in which short pulses of subnanosecond duration are coupled to a dual-mode transmission line immersed in a liquid to propagate thereon in a plurality of modes. A surface wave propagating on the outer conductor is reflected from the surface of the liquid, and coaxial-mode propagating within the transmission line is reflected from the reference level. These reflected pulses propagate back along the transmission line, coupled to a receiver for detection, the detected pulses processed to determine the liquid height above a reference level.

REFERENCES:
patent: 3474337 (1969-10-01), Petrick
patent: 3703829 (1972-11-01), Dougherty
patent: 3832900 (1974-09-01), Ross
patent: 3874237 (1975-04-01), Zwarts
patent: 3995212 (1976-11-01), Ross
patent: 4359902 (1982-11-01), Lawless

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