DE1195960B - Electrostatic flow meter - Google Patents
Electrostatic flow meterInfo
- Publication number
- DE1195960B DE1195960B DEE24534A DEE0024534A DE1195960B DE 1195960 B DE1195960 B DE 1195960B DE E24534 A DEE24534 A DE E24534A DE E0024534 A DEE0024534 A DE E0024534A DE 1195960 B DE1195960 B DE 1195960B
- Authority
- DE
- Germany
- Prior art keywords
- flow meter
- electrostatic flow
- meter according
- electrostatic
- potential
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/64—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction effects
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Description
Elektrostatischer Durchflußmesser Die Erfindung betrifft einen elektrostatischen Durchflußmesser für strömende, elektrisch schlecht bzw. nicht leitende Flüssigkeiten.Electrostatic Flow Meter The invention relates to an electrostatic Flow meter for flowing, electrically poor or non-conductive liquids.
Es sind elektrische Durchflußmesser verschiedener Bauarten bekannt, deren Wirkungsweise auf dem Gesetz der magnetischen Induktion beruht. Die Anwendung derartiger Durchflußmesser ist aber auf Flüssigkeiten beschränkt, deren elektrische Leitfähigkeit oberhalb eines bestimmten Wertes liegt. Für elektrisch schlecht bzw. nicht leitende Flüssigkeiten ist dieses Meßprinzip nicht brauchbar. There are known electrical flow meters of various types, whose mode of operation is based on the law of magnetic induction. The application Such a flow meter is limited to liquids, their electrical Conductivity is above a certain value. For electrically bad or This measuring principle cannot be used for non-conductive liquids.
Der Erfindung liegt die Aufgabe zugrunde, einen einfachen und betriebssicheren Durchflußmesser für strömende Flüssigkeiten zu schaffen, die keine bzw. nur geringe elektrische Leitfähigkeit besitzen. The invention is based on the object of a simple and operationally reliable To create flow meters for flowing liquids that have little or no have electrical conductivity.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß eine Bezugselektrode mit konstantem, definiertem Potential und eine Meßelektrode aus nicht leitendem Material, die in bekannter Weise als Elektrodenmembran ausgebildet ist, in den Flüssigkeitsstrom eintauchen und die Potentialdifferenz zwischen Meßpotential und Bezugspotential in bekannter Weise von einem Meßgerät angezeigt wird. According to the invention, this object is achieved in that a reference electrode with constant, defined potential and a measuring electrode made of non-conductive Material, which is designed in a known manner as an electrode membrane, into the liquid flow immerse and the potential difference between measuring potential and reference potential is displayed in a known manner by a measuring device.
Als Meßgerät wird vorzugsweise ein Gleichstromverstärker mit einem hohen Ohmschen Widerstand verwendet. A DC amplifier with a high ohmic resistance used.
Die beiden Elektroden werden vor Beschädigungen geschützt, wenn sie aus der Ebene der Rohrwandung nicht wesentlich herausragen. Die Meßgenauigkeit wird erhöht, wenn die Elektroden nahe beieinander angeordnet werden. Auftretende Störpotentiale werden in bekannter Weise durch Gegenströme bzw. Spannungen direkt kompensiert oder indem die Störpotentiale gemessen und durch einen in Abhängigkeit vom Meßwert geregelten Gegenstrom bzw. Gegenspannung gegengeschaltet werden. The two electrodes are protected from damage when they do not protrude significantly from the plane of the pipe wall. The measurement accuracy is increased when the electrodes are placed close to each other. Occurring interference potentials are directly compensated in a known manner by countercurrents or voltages or by measuring the interference potentials and controlling them as a function of the measured value Countercurrent or countervoltage can be switched on.
Der Verstärker der Meßeinrichtung ist mit einer Empfindlichkeitseinstellung versehen, welche eine Anpassung an die von der Art der Flüssigkeit abhängigen Potentiale gestattet. The amplifier of the measuring device is with a sensitivity adjustment provided which an adaptation to the potentials depending on the type of liquid allowed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. An embodiment of the invention is shown in the drawing.
In das von der Flüssigkeit durchströmte Rohr 1 sind zwei handelsübliche Elektroden eingebaut: die Meßelektrode 2 und die Bezugselektrode 4 mit Diaphragma 6 und Flüssigkeitsfüllung 5. Die Ableitungen 3 und 7 dieser Elektroden werden mit dem Verstärker 8 verbunden, dessen Ausgangswerte vom Meßgerät 9 angezeigt werden. In the tube 1 through which the liquid flows are two commercially available Built-in electrodes: measuring electrode 2 and reference electrode 4 with diaphragm 6 and liquid filling 5. The leads 3 and 7 of these electrodes are with connected to the amplifier 8, the output values of which are displayed by the measuring device 9.
Die Wirkungsweise der Anordnung beruht darauf, daß durch Reibungsvorgänge zwischen strömender Flüssigkeit und Elektroden diese elektrisch aufgeladen werden. Die Größe der Aufladungen hängt von der Strömungsgeschwindigkeit der Flüssigkeit ab. The mode of operation of the arrangement is based on the fact that by friction processes between flowing liquid and electrodes these are electrically charged. The size of the charges depends on the flow rate of the liquid away.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE24534A DE1195960B (en) | 1963-03-21 | 1963-03-21 | Electrostatic flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE24534A DE1195960B (en) | 1963-03-21 | 1963-03-21 | Electrostatic flow meter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1195960B true DE1195960B (en) | 1965-07-01 |
Family
ID=7071399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE24534A Pending DE1195960B (en) | 1963-03-21 | 1963-03-21 | Electrostatic flow meter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1195960B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347738A (en) * | 1968-09-06 | 1982-09-07 | The United States Of America As Represented By The Secretary Of The Navy | Oceanographic transducer |
WO1994023281A1 (en) * | 1993-04-06 | 1994-10-13 | Pollution Control And Measurement (Europe) Ltd. | Method and apparatus for detecting particles in a flow |
US5591895A (en) * | 1992-04-30 | 1997-01-07 | Pollution Control & Measurement (Europe) Ltd. | Detecting particles in a gas flow |
US5753632A (en) * | 1993-04-07 | 1998-05-19 | Schmidt; Alfred | Use of colloidal silica for the treatment of sickle-cell anaemia, malaria and exogenously induced leucopenias |
EP1754957A1 (en) | 2005-08-19 | 2007-02-21 | Robert Bosch Gmbh | Device for triboelectric mass flow measurement in fluid media |
WO2013165783A1 (en) * | 2012-04-30 | 2013-11-07 | Chevron U.S.A. Inc. | Flow sensing apparatus and methods for use in oil and gas wells |
-
1963
- 1963-03-21 DE DEE24534A patent/DE1195960B/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347738A (en) * | 1968-09-06 | 1982-09-07 | The United States Of America As Represented By The Secretary Of The Navy | Oceanographic transducer |
US5591895A (en) * | 1992-04-30 | 1997-01-07 | Pollution Control & Measurement (Europe) Ltd. | Detecting particles in a gas flow |
WO1994023281A1 (en) * | 1993-04-06 | 1994-10-13 | Pollution Control And Measurement (Europe) Ltd. | Method and apparatus for detecting particles in a flow |
US6192740B1 (en) | 1993-04-06 | 2001-02-27 | Pcme Limited | Method and apparatus for detecting particles in a flow |
US5753632A (en) * | 1993-04-07 | 1998-05-19 | Schmidt; Alfred | Use of colloidal silica for the treatment of sickle-cell anaemia, malaria and exogenously induced leucopenias |
EP1754957A1 (en) | 2005-08-19 | 2007-02-21 | Robert Bosch Gmbh | Device for triboelectric mass flow measurement in fluid media |
WO2013165783A1 (en) * | 2012-04-30 | 2013-11-07 | Chevron U.S.A. Inc. | Flow sensing apparatus and methods for use in oil and gas wells |
US9068431B2 (en) | 2012-04-30 | 2015-06-30 | Chevron U.S.A. Inc. | Flow sensing apparatus and methods for use in oil and gas wells |
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