DE3209231A1 - Volume meter - Google Patents

Volume meter

Info

Publication number
DE3209231A1
DE3209231A1 DE19823209231 DE3209231A DE3209231A1 DE 3209231 A1 DE3209231 A1 DE 3209231A1 DE 19823209231 DE19823209231 DE 19823209231 DE 3209231 A DE3209231 A DE 3209231A DE 3209231 A1 DE3209231 A1 DE 3209231A1
Authority
DE
Germany
Prior art keywords
volume
volumeter
volumetric meter
pressure sensor
characterized according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19823209231
Other languages
German (de)
Inventor
Rudolf Prof.Dr.-Ing. Heinisch
Wolfgang Ing. Merkel (grad.), 1000 Berlin
Ehrenfried Prof.Dr.-Ing. Schütt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19823209231 priority Critical patent/DE3209231A1/en
Publication of DE3209231A1 publication Critical patent/DE3209231A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention relates to an arrangement for measurement of the volume (the density) of solid and fluid substances according to the principle of volume displacement, as described in DIN 12795 by the pyknometer procedure. Pressure changes are produced in the measuring system by an alternatingly variable gas volume, and are dependent on the sample volume to be measured. These pressure changes are detected and evaluated by measurement technology.

Description

VolumenometerVolumeter

Die Erfindung bezieht sich auf eine Anordnung zur Messung des Volumens (der Dichte) fester und flüssiger Substanzen nach dem Prinzip der Volumenverdrängung, wie es in DIN 12 795 durch das Pyknometerverfahren beschrieben wird.The invention relates to an arrangement for measuring the volume (the density) of solid and liquid substances according to the principle of volume displacement, as described in DIN 12 795 by the pycnometer method.

Die Aufgabe wird erfindergemäß dadurch gelöst, daß ein eingeschlossenes Gasvolumen durch einen Kolben oder eine Membrane zu Schwingungen angeregt wird, die über einen Druckaufnehmer erfaßt und eine Rechenschaltung ausgeweitet werden.The object is achieved according to the invention in that an included Gas volume is excited to vibrate by a piston or a membrane, which are recorded by a pressure transducer and expanded by a computing circuit.

Die Erfindung wird im folgenden, anhand einer in der Zeichnung dargestellten Ausführungsform erläutert.The invention is illustrated below with reference to one in the drawing Embodiment explained.

Mit 1 ist das Probegefäß zur Aufnahme der Probensubstanz 6 bezeichnet. Es ist über eine Rohrleitung 7 mit dem Schwinger 2 und dem Druckaufnehmer 3 verbunden. Mit Hilfe des Scnwingers 2 wird über einen Kolben oder eine Membrane durch periodische Volumendilation und -kontraktion AV ein zugeordnetes Drucksignal erzeugt, dessen Amplitude von dem in das Probegefäß 1 eingebrachten Probensubstanzvolumen abhängt. Mit dem Druckaufnehmer 3, der entsprechend dem äußeren Luftdruck po ein Signal für den Differendruck Ap liefert, und den Druckaufnehmer 4, der den AbsolutSruck pO mißt, wird über eine Rechenschaltung das Probensubstanzvolumen Vk bestimmt nach wobei V das Leervolumen von Probegefäß 1, die Rohrleitung 7 0 bis zum Schwinger 2 und Druckaufnehmer 3 darstellt.The sample vessel for receiving the sample substance 6 is denoted by 1. It is connected to the oscillator 2 and the pressure transducer 3 via a pipeline 7. With the aid of the vibrator 2, an associated pressure signal is generated via a piston or a membrane through periodic volume expansion and contraction AV, the amplitude of which depends on the volume of the sample substance introduced into the sample vessel 1. With the pressure transducer 3, which supplies a signal for the differential pressure Ap according to the external air pressure po, and the pressure transducer 4, which measures the absolute pressure pO, the sample substance volume Vk is determined via a computing circuit where V is the empty volume of sample vessel 1, the pipeline 7 0 up to the transducer 2 and the pressure transducer 3.

Die Vorrichtung 8 dient der einseitigen Auslenkung des Schwingers bzw. der Einbringung eines Zusatzvolumens zur Uberprüfung der Dichtheit des Systems.The device 8 is used to deflect the oscillator on one side or the introduction of an additional volume to check the tightness of the system.

Gegenüber anderen volumetrischen Meßverfahren werden weder Ventile noch Pumpen benötigt.Compared to other volumetric measuring methods, neither valves pumps still needed.

Claims (6)

Volumenometer Patentansprüche: Das Volumenometer ist dadurch gekennzeichnet, daß ein schwingendes Gasvolumen Verwendung findet. Die Schwingung wird durch einen oszillierenden oder drehenden Kolben oder durch eine Membrane erzeugt.Volumeter claims: The volumeter is characterized by that a vibrating volume of gas is used. The vibration is through a oscillating or rotating piston or generated by a diaphragm. 2. Das Volumenometer ist nach Anspruch 1 dadurch gekennzeichnet, daß als Gas Umgebungsluft benutzt wird.2. The volumetric meter is characterized according to claim 1, characterized in that ambient air is used as the gas. 3. Das Volumenometer ist nach Anspruch 1 dadurch gekennzeichnet, daß die Meßgröße A p mit einem Differenzdrucksensor gegenüber Umgebungsdruck erfaßt wird.3. The volumetric meter is characterized according to claim 1, characterized in that the measured variable A p is detected with a differential pressure sensor with respect to ambient pressure will. 4. Das Volumenometer ist nach Anspruch 1 dadurch gekennzeichnet, daß die Auswertung der Meßgröße t p über eine Rechenschaltung unter Berücksichtigung des Umgebungsdruckes pO erfcigt, der durch einen Absolutdrucksensor erfaßt wird.4. The volumeter is characterized according to claim 1, characterized in that the evaluation of the measured variable t p via a computing circuit taking into account of the ambient pressure pO, which is recorded by an absolute pressure sensor. 5. Das Volumenometer ist nach Anspruch 1 dadurch gekennzeichnet, daß anstelle der Meßgröße dI p der Absolutdruck im System gemessen werden kann.5. The volumetric meter is characterized according to claim 1, characterized in that Instead of the measured variable dI p, the absolute pressure in the system can be measured. 6. Das Volumenometer ist nach Anspruch 1 dadurch gekennzeichnet, daß mit einer elektrischen oder mechanischen einseitigen Auslenkung des Schwingers oder eines Zusatzvolumens die Dichtheit des Systems mit Hilfe eines Drucksensors überprüft werden kann.6. The volumetric meter is characterized according to claim 1, characterized in that with an electrical or mechanical one-sided deflection of the oscillator or an additional volume checked the tightness of the system with the help of a pressure sensor can be.
DE19823209231 1982-03-13 1982-03-13 Volume meter Withdrawn DE3209231A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823209231 DE3209231A1 (en) 1982-03-13 1982-03-13 Volume meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823209231 DE3209231A1 (en) 1982-03-13 1982-03-13 Volume meter

Publications (1)

Publication Number Publication Date
DE3209231A1 true DE3209231A1 (en) 1983-09-15

Family

ID=6158198

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823209231 Withdrawn DE3209231A1 (en) 1982-03-13 1982-03-13 Volume meter

Country Status (1)

Country Link
DE (1) DE3209231A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003834A1 (en) * 1984-12-21 1986-07-03 Enpece Ab Method and apparatus for volume measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003834A1 (en) * 1984-12-21 1986-07-03 Enpece Ab Method and apparatus for volume measurement

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