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1. WO2007086873 - LIQUID LEVEL AND DENSITY MEASUREMENT DEVICE

Publication Number WO/2007/086873
Publication Date 02.08.2007
International Application No. PCT/US2006/003236
International Filing Date 30.01.2006
IPC
G01F 23/38 2006.01
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
30by floats
32using rotatable arms or other pivotable transmission elements
38using magnetically actuated indicating means
G01F 23/76 2006.01
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
30by floats
76characterised by the construction of the float
CPC
G01F 23/2963
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
296Acoustic waves
2962Transit time measurement
2963magnetostrictive
G01F 23/76
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
30by floats
76characterised by the construction of the float
G01N 9/12
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
9Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
10by observing bodies wholly or partially immersed in fluid materials
12by observing the depth of immersion of the bodies, e.g. hydrometers
Applicants
  • FRANKLIN FUELING SYSTEMS, INC. [US]/[US] (AllExceptUS)
  • DEMIN, Vitaliy [US]/[US] (UsOnly)
Inventors
  • DEMIN, Vitaliy
Agents
  • STINE, Thomas, K.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LIQUID LEVEL AND DENSITY MEASUREMENT DEVICE
(FR) DISPOSITIF DE MESURE DU NIVEAU ET DE LA DENSITE D’UN LIQUIDE
Abstract
(EN)
A liquid level and density measurement device is disclosed. The device comprises an elongated magnetostrictive transducer and at least two transducer magnets embedded into floats that can freely move along a transducer. One float is relatively more sensitive to liquid density variation than the other float. The less sensitive float is used for liquid level measurement and the more sensitive float is used for liquid density measurement. The liquid density float has a lower part completely immersed into a liquid and an upper part partially immersed into a liquid. The upper part is made substantially in the form of a hollow cylinder with an internal diameter larger than the external diameter of the liquid level float. Therefore the liquid density float can move up and down without touching the liquid level float.
(FR)
L’invention concerne un dispositif de mesure du niveau et de la densité d’un liquide. Le dispositif comprend un transducteur magnétostrictif allongé et au moins deux aimants de transducteur incorporés dans des flotteurs susceptibles de se déplacer librement le long du transducteur. Un flotteur est relativement plus sensible que l’autre à une variation de densité du liquide. Le flotteur moins sensible est utilisé pour mesurer le niveau du liquide et le flotteur plus sensible est utilisé pour mesurer la densité du liquide. Le flotteur utilisé pour mesurer la densité du liquide comporte une partie inférieure complètement immergée dans le liquide et une partie supérieure partiellement immergée dans le liquide. La partie supérieure prend sensiblement la forme d’un cylindre creux dont le diamètre intérieur est supérieur au diamètre extérieur du flotteur utilisé pour mesurer le niveau du liquide. Le flotteur utilisé pour mesurer la densité du liquide peut donc monter et descendre sans entrer au contact du flotteur utilisé pour mesurer le niveau du liquide.
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