DE10004231A1 - Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height - Google Patents

Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height

Info

Publication number
DE10004231A1
DE10004231A1 DE2000104231 DE10004231A DE10004231A1 DE 10004231 A1 DE10004231 A1 DE 10004231A1 DE 2000104231 DE2000104231 DE 2000104231 DE 10004231 A DE10004231 A DE 10004231A DE 10004231 A1 DE10004231 A1 DE 10004231A1
Authority
DE
Germany
Prior art keywords
container
flowmeter
height
maintained
viscometer
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Withdrawn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
DE2000104231
Other languages
German (de)
Inventor
Elmar Schweer
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 DE2000104231 priority Critical patent/DE10004231A1/en
Publication of DE10004231A1 publication Critical patent/DE10004231A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material

Abstract

The viscometer includes a container (1), an overflow pipe (2), and a flowmeter (3). The filling height in the container is maintained at a constant height. The flowmeter measures the flow value which is dependent only on the viscosity. Hence it is possible to infer the viscosity directly from the flow speed.

Description

Die Erfindung betrifft eine Vorrichtung entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Alle aktuellen Viskosimeter arbeiten entweder mit sehr kleinem Meßspalt, oder aber mit bewegten Teilen. Ihr üblicher Meßbereich beginnt ab ca. 10 mPas.All current viscometers work either with a very small measuring gap or with moving parts. Their usual measuring range starts from approx. 10 mPas.

Für die Messung sehr kleiner Viskositäten bis herunter zu 1 mPas bedarf es besonders kleiner Spalte beim Fallkugelviskosimeter oder praktisch nicht baubarer Kraftmessung beim Rotationsviskosimeter. Partikel in der zu messenden Flüssigkeit machen so eine Messung durch den besonders kleinen Meßspalt unmöglich. Weiterhin kann nur die Viskosität im Behälter gemessen werden. Viskosimeter nach dem Differenzdruckverfahren sind ebenfalls unter 10 mPas nicht zuverlässig.Smaller viscosities down to 1 mPas are particularly important Column in the falling ball viscometer or practically non-buildable force measurement in Rotational viscometer. Particles in the liquid to be measured make such a measurement impossible due to the particularly small measuring gap. Furthermore, only the viscosity in the Containers are measured. Viscometers using the differential pressure method are also available not reliable below 10 mPas.

Aufgabe der Erfindung ist das Messen besonders niedriger Viskositäten in strömenden Flüssigkeiten.The object of the invention is to measure particularly low viscosities in flowing Liquids.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a device with the features of claim 1.

Keine besonders feinen Teile (Spalte, Düsen), daher Partikel möglich. Messung im Durchfluß, somit stetige Messung der Viskosität. No particularly fine parts (gaps, nozzles), therefore particles are possible. Measurement in Flow, thus constant measurement of the viscosity.  

BezugszeichenlisteReference list

11

Behälter bekannter Größe
Known size containers

22

Überlaufrohr
Overflow pipe

33rd

Durchflußmesser
Flow meter

Funktion: Die zu messende Flüssigkeit A wird in den Behälter (1) geleitet. ist der Behälter A gefüllt, läuft die weitere Menge B in den Überlauf (2). Hierdurch ist sichergestellt, das der Füllstand im Behälter (1) immer Konstant ist. Hierdurch ergibt sich durch den Durchflußmesser (3) eine gleichmäßige Strömung C, die in ihrer Größe nur noch von der Viskosität abhängt. Somit ist es möglich, aus der Strömungsgeschwindigkeit direkt auf die Viskosität zu schließen.Function: The liquid A to be measured is fed into the container ( 1 ). when container A is filled, the further quantity B runs into the overflow ( 2 ). This ensures that the fill level in the container ( 1 ) is always constant. This gives the flow meter ( 3 ) a uniform flow C, the size of which only depends on the viscosity. It is thus possible to draw direct conclusions about the viscosity from the flow rate.

Wichtig ist ein besonders großer Überlauf (2), damit die Füllhöhe in (1) immer konstant ist.A particularly large overflow ( 2 ) is important so that the fill level in ( 1 ) is always constant.

Claims (2)

1. Vorrichtung zum Messen der Viskosität von Flüssigkeiten, dadurch gekennzeichnet, daß die Füllhöhe im Behälter konstant gehalten wird.1. Device for measuring the viscosity of liquids, characterized in that the fill level in the container is kept constant. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß keine Druckänderungen auf den Auslauf wirken.2. Device according to claim 1, characterized in that no pressure changes the spout work.
DE2000104231 2000-02-01 2000-02-01 Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height Withdrawn DE10004231A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2000104231 DE10004231A1 (en) 2000-02-01 2000-02-01 Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000104231 DE10004231A1 (en) 2000-02-01 2000-02-01 Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height

Publications (1)

Publication Number Publication Date
DE10004231A1 true DE10004231A1 (en) 2001-09-20

Family

ID=7629376

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000104231 Withdrawn DE10004231A1 (en) 2000-02-01 2000-02-01 Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height

Country Status (1)

Country Link
DE (1) DE10004231A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE713990C (en) * 1939-03-05 1941-11-19 Edeleanu Gmbh Viscometer
US3559463A (en) * 1969-06-02 1971-02-02 Phoenix Chemical Lab Inc Viscometers
US3864962A (en) * 1972-04-10 1975-02-11 Ciba Geigy Ag Capillary viscosimeter
DE4011448A1 (en) * 1990-04-09 1991-10-10 Siemens Ag Liquid viscosity measurement arrangement for oil - contains throughflow vessel with temp. controlled heating, light barriers and aperture control lifting magnet
DE19934840A1 (en) * 1999-07-24 2001-02-08 Jochen K Lehmann Apparatus to determine the dynamic or apparent viscosity of fluids has a collection vessel charged by a suction tube and capillary so that the pressure portion remains constant from the column of fluid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE713990C (en) * 1939-03-05 1941-11-19 Edeleanu Gmbh Viscometer
US3559463A (en) * 1969-06-02 1971-02-02 Phoenix Chemical Lab Inc Viscometers
US3864962A (en) * 1972-04-10 1975-02-11 Ciba Geigy Ag Capillary viscosimeter
DE4011448A1 (en) * 1990-04-09 1991-10-10 Siemens Ag Liquid viscosity measurement arrangement for oil - contains throughflow vessel with temp. controlled heating, light barriers and aperture control lifting magnet
DE19934840A1 (en) * 1999-07-24 2001-02-08 Jochen K Lehmann Apparatus to determine the dynamic or apparent viscosity of fluids has a collection vessel charged by a suction tube and capillary so that the pressure portion remains constant from the column of fluid

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee