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1. WO2016134915 - VIBRONIC SENSOR

Publication Number WO/2016/134915
Publication Date 01.09.2016
International Application No. PCT/EP2016/051935
International Filing Date 29.01.2016
IPC
G01N 11/16 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
11Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
10by moving a body within the material
16by measuring damping effect upon oscillatory body
G01F 23/296 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
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 electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
296Acoustic waves
G01N 9/00 2006.01
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
CPC
G01F 23/2967
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
2966making use of acoustical resonance or standing waves
2967for discrete levels
G01N 11/10
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
11Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
10by moving a body within the material
G01N 11/16
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
11Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
10by moving a body within the material
16by measuring damping effect upon oscillatory body
G01N 2009/006
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
002using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
006vibrating tube, tuning fork
G01N 2011/0073
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
11Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
006Determining flow properties indirectly by measuring other parameters of the system
0073acoustic properties
G01N 2291/02818
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
02Indexing codes associated with the analysed material
028Material parameters
02818Density, viscosity
Applicants
  • ENDRESS+HAUSER GMBH+CO. KG [DE]/[DE]
Inventors
  • BRENGARTNER, Tobias
Agents
  • ANDRES, Angelika
Priority Data
102015102834.427.02.2015DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VIBRONISCHER SENSOR
(EN) VIBRONIC SENSOR
(FR) DÉTECTEUR VIBRONIQUE
Abstract
(DE)
Vibronischer Sensor (1) sowie Verfahren zum Betreiben eines vibronischen Sensors zur Überwachung von zumindest der Dichte (ρ) und/oder der Viskosität (η) eines Mediums (2) in einem Behälter (3) zumindest umfassend eine mechanisch schwingfähige Einheit (4), eine Antriebs- /Empfangseinheit (5) und eine Elektronikeinheit (6), wobei die Antriebs-/Empfangseinheit (5) dazu ausgestaltet ist, mittels eines elektrischen Anregesignals (UA) die mechanisch schwingfähige Einheit (4) zu mechanischen Schwingungen anzuregen, und die mechanischen Schwingungen der mechanisch schwingfähigen Einheit (4) zu empfangen und in ein elektrisches Empfangssignal (UE) umzuwandeln, wobei die Elektronikeinheit (6) dazu ausgestaltet ist, das Anregesignal (UA) ausgehend vom Empfangssignal (UE) derart zu erzeugen, dass eine vorgebbare Phasenverschiebung (φ 45, φ 90) zwischen dem Anregesignal (UA) und Empfangssignal (UE) vorliegt, wobei die Elektronikeinheit (6) dazu ausgestaltet ist, zumindest eine erste vorgebbare Phasenverschiebung (φ 90) und eine zweite vorgebbare Phasenverschiebung (φ 45) einzustellen, und eine der jeweiligen vorgebbaren Phasenverschiebung (φ 90, φ 45) entsprechende erste Frequenz (ω90) und zweite Frequenz (ω135) zu ermitteln, und aus den beiden Frequenzen (ω90, ω135) mittels einer ersten analytischen Formel die Dichte (ρ) und/oder mittels einer zweiten analytischen Formel die Viskosität (η) des Mediums (2) zu bestimmen.
(EN)
The invention relates to a vibronic sensor (1) and to a method for operating a vibronic sensor for monitoring at least the density (ρ) and/or the viscosity (η) of a medium (2) in a container (3), said vibronic sensor at least comprising a unit (4) that can vibrate mechanically, a driving/receiving unit (5), and an electronic unit (6), wherein the driving/receiving unit (5) is designed to excite the unit (4) that can vibrate mechanically to mechanically vibrate by means of an electrical excitation signal (UA), and to receive the mechanical vibrations of the unit (4) that can vibrate mechanically, and to convert said mechanical vibrations into an electrical reception signal (UE), wherein the electronic unit (6) is designed to produce the excitation signal (UA) on the basis of the reception signal (UE) in such a way that a specifiable phase shift (φ 45, φ 90) exists between the excitation signal (UA) and the reception signal (UE), wherein the electronic unit (6) is designed to set at least a first specifiable phase shift (φ 90) and a second specifiable phase shift (φ 45), and to determine a first frequency (ω90) and a second frequency (ω135) corresponding to the respective specifiable phase shifts (φ 90, φ 45), and to determine from the two frequencies (ω90, ω135) the density (ρ) by means of a first analytical formula and the viscosity (η) of the medium (2) by means of a second analytical formula.
(FR)
L'invention concerne un détecteur vibronique (1) ainsi qu'un procédé permettant de faire fonctionner un détecteur vibronique pour surveiller au moins la densité (ρ) et/ou la viscosité (η) d'un fluide (2) dans un contenant (3), comprenant au moins une unité apte à vibrer mécaniquement (4), une unité d'entraînement/de réception (5) et une unité électronique (6), l'unité d'entraînement/de réception (5) étant conçue pour faire vibrer mécaniquement l'unité apte à vibrer mécaniquement (4) au moyen d'un premier signal électrique d'excitation (UA) et pour recevoir les vibrations mécaniques de l'unité apte à vibrer mécaniquement (4) et les convertir en un signal de réception électrique (UE). L'unité électronique (6) est conçue pour produire le signal d'excitation (UA) à partir du signal de réception (UE) de telle manière qu'il existe un déphasage pouvant être prédéfini (φ 45, φ 90) entre le signal d'excitation (UA) et le signal de réception (UE). L'unité électronique (6) est conçue pour établir au moins un premier déphasage pouvant être prédéfini (φ 90) et au moins un deuxième déphasage pouvant être prédéfini (φ 45) et pour déterminer une première fréquence (ω90) et une deuxième fréquence (ω135) correspondant à chaque déphasage pouvant être prédéfini (φ 90, φ 45), et pour déterminer à partir des deux fréquences (ω90, ω135) la densité (ρ) du fluide (2) au moyen d'une première formule analytique et/ou la viscosité (η) du fluide (2) au moyen d'une deuxième formule analytique.
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