Measuring device and process for determining the fill level in f

Details Measuring device and process for determining the fill level in f Measuring device and process for determining the fill level in f

1992-02-24

1993-07-13

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

73292, 367908, 367 99, 181124, 181402, 374142, G01F 2328

Patent

active

052263207

ABSTRACT:
In a level measuring device for containers filled with fluid, preferably tanks in tank installations, the fill level height h is determined from the transit time of ultrasound pulses which are emitted by first sound pulse transmitters along a main measuring path extending from the bottom region of the tank to the fluid surface and are reflected from the fluid surface to first sound pulse receivers. Temperature sensors are provided for finding the temperature distribution throughout the fill level height h. Processing the measurements provides a mean temperature TM in the fluid volume. In addition to the main measuring path there is a reference path in the fluid volume, with second sound pulse transmitters and receivers and a reference temperature sensor for measuring a reference temperature T.sub.Ref. The reference path makes it possible to find the sound velocity v*(T.sub.Ref) in the fluid volume at the reference temperature T.sub.Ref from the measured difference in transit time, so that a temperature-corrected sound velocity v(T) in the fluid volume: v(T)=v*(T.sub.Ref)[1+K.sub.k.multidot..DELTA. T], and thus a temperature-corrected fill level height h(T)=v(T).multidot.t.sub.H, are found, in which .DELTA.T=TM-T.sub.Ref, and K.sub.k is a medium-dependent correction factor. The measuring device and a process for determining the fill level use a measuring tube with first and second sound waveguides.

REFERENCES:
patent: 3184969 (1965-05-01), Bolton
patent: 3214974 (1965-11-01), Altman et al.
patent: 3834233 (1974-09-01), Willis et al.
patent: 4170765 (1979-10-01), Austin et al.
patent: 4305283 (1981-12-01), Redding
patent: 4748846 (1988-06-01), Haynes
patent: 4815323 (1989-03-01), Ellinger et al.
patent: 5036703 (1991-08-01), Eriksson
patent: 5095748 (1992-03-01), Gregory et al.
patent: 5127266 (1992-07-01), Maresca et al.
Oil & Gas Journal, vol. 87, No. 1, Jan. 2, 1989, Tulsa, Okla., US: pp. 39-44 (Edvardsson).
IEEE Transactions on Ultrasonics, vol. UFF34, No. 2, Mar. 1987, New York US, (Jacobson et al.) pp. 212-224.
Ultrasonics, vol. 4, No. 171/177, Oct. 1966, p. 171, (Franchi).
Journal of Physics E. Scientific Instruments, vol. 16, No. 10, Oct. 1983, Dorking, GB, pp. 959-963 (Asher).

Affiliated with

Also associated with

Rating

Measuring device and process for determining the fill level in f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measuring device and process for determining the fill level in f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring device and process for determining the fill level in f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2304480