Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-04-14
1976-11-30
Queisser, Richard C.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
73290R, 73304R, G01F 2328, G01R 2706
Patent
active
039952126
ABSTRACT:
A method and apparatus for measuring the level and dielectric constant of a liquid which includes a device for generating a subnanosecond baseband pulse that propagates through a transition device to a single wire transmission line that extends through an air filled region into the liquid. A discontinuity created at the air liquid interface produces a reflection of the baseband pulse that is compared with the transmitted pulse with respect to time of arrival and amplitude to determine the liquid level and the reflection coefficient at the air liquid interface. The reflection coefficient is then utilized to determine the dielectric constant of the liquid.
REFERENCES:
patent: 2685068 (1954-07-01), Goubau
patent: 3079551 (1963-02-01), Walker
patent: 3218553 (1965-11-01), Peterson et al.
patent: 3474337 (1969-10-01), Petrick
patent: 3753111 (1973-08-01), Denbnovetsky et al.
patent: 3812422 (1974-05-01), De Carolis
patent: 3832900 (1974-09-01), Ross
Levine Seymour
Queisser Richard C.
Shoon Frederick
Sperry Rand Corporation
Terry Howard P.
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