Procedure for measuring the level of a liquid in a tank accordin

Details Procedure for measuring the level of a liquid in a tank accordin Procedure for measuring the level of a liquid in a tank accordin

1996-08-26

1998-09-01

Dombroske, George

Measuring and testing

Liquid level or depth gauge

G01F 2300

Patent

active

057995346

ABSTRACT:
A process for measuring the level of a liquid in a tank according to the radar principle, using a voltage-controlled oscillator determining the radar frequency, and a voltage source controlling the voltage-controlled oscillator, in the case of which the radar frequencies are modulated according to the FMCW process by a corresponding control of the voltage source. The frequency of the voltage-controlled oscillator is measured at least regularly during the frequency sweep, and a non-linear frequency characteristic is corrected during the frequency sweep through a corresponding controlling of the voltage source.

REFERENCES:
patent: 4503433 (1985-03-01), Tomasi
patent: 4847623 (1989-07-01), Jean et al.
patent: 5365178 (1994-11-01), Van Der Pol
patent: 5406842 (1995-04-01), Locke
patent: 5438867 (1995-08-01), Van Der Pol

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