DK148686A - METHOD AND APPARATUS FOR INTERMITTENT MEASUREMENT OF THE ELECTRICALLY CONDUCTIVE FLUID FLOW - Google Patents
METHOD AND APPARATUS FOR INTERMITTENT MEASUREMENT OF THE ELECTRICALLY CONDUCTIVE FLUID FLOW Download PDFInfo
- Publication number
- DK148686A DK148686A DK148686A DK148686A DK148686A DK 148686 A DK148686 A DK 148686A DK 148686 A DK148686 A DK 148686A DK 148686 A DK148686 A DK 148686A DK 148686 A DK148686 A DK 148686A
- Authority
- DK
- Denmark
- Prior art keywords
- capacitor
- magnetic field
- flow transducer
- energy
- decay
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 5
- 238000011156 evaluation Methods 0.000 abstract 2
- 230000005284 excitation Effects 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
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
- G01F1/58—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 electromagnetic flowmeters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
-
- 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
- G01F1/58—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 electromagnetic flowmeters
- G01F1/60—Circuits therefor
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Volume Flow (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1. Method for the intermittent measurement of the throughflow of an electrically conducting liquid with the aid of an inductive flow transducer (1), wherein the throughflow is measured by means of build-up and decay of a magnetic field during individual measurements which are delimited one from the other by repeated connection with and separation from a direct voltage source, characterised thereby, that during each individual measurement, a) a capacitor (C1) is charged by means of the direct voltage source (20), b) that the direct voltage source (20) is separated from the capacitor (C1) after the charging and the excitation coils (15, 16) of the flow transducer (1) are fed from the capacitor (C1), wherein the magnetic field is built up only so far that the saturation state of the flow transducer (1) is not yet reached, c) that the energy to the flow transducer (1) is then interrupted, wherein the energy produced on the decay of the magnetic field caused thereby is conducted back into the capacitor (C1), d) that for the evaluation of the output signal produced by the flow transducer (1), also that part of the output signal, which arises without energy supply during the decay of the magnetic field, is evaluated as useful signal, e) that after the evaluation of the useful signal, the capacitor (C1) is again connected with the direct voltage source (20) for the purpose of renewed charging for the next individual measurement, wherein the supplied energy is smaller by the energy regained by the decay of the magnetic field during the preceding individual measurement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1459/85A CH668124A5 (en) | 1985-04-03 | 1985-04-03 | METHOD FOR INTERMITTENTLY MEASURING THE FLOW RATE OF A LIQUID BY MEANS OF AN INDUCTIVE FLOW CONVERTER AND DEVICE FOR CARRYING OUT THIS METHOD. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK148686D0 DK148686D0 (en) | 1986-04-02 |
| DK148686A true DK148686A (en) | 1986-10-04 |
Family
ID=4210968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK148686A DK148686A (en) | 1985-04-03 | 1986-04-02 | METHOD AND APPARATUS FOR INTERMITTENT MEASUREMENT OF THE ELECTRICALLY CONDUCTIVE FLUID FLOW |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0196559B1 (en) |
| AT (1) | ATE54751T1 (en) |
| CH (1) | CH668124A5 (en) |
| DE (1) | DE3672643D1 (en) |
| DK (1) | DK148686A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19938160C2 (en) * | 1999-08-16 | 2003-11-20 | Krohne Messtechnik Kg | Magnetic-inductive flow measuring method and flow meter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1206953A (en) * | 1967-02-04 | 1970-09-30 | Mawdsley S Ltd | Improvements in or relating to electromagnetic flowmeter heads |
| DE2744845C3 (en) * | 1977-10-05 | 1985-08-08 | Flowtec AG, Reinach, Basel | Process for the compensation of the electrochemical disturbance direct voltage in the magneto-inductive flow measurement with periodically reversed magnetic field |
| DE3029791C3 (en) * | 1980-08-06 | 1994-08-04 | Aichi Tokei Denki Kk | Electromagnetic flow meter |
| DE3133330C2 (en) * | 1981-08-22 | 1983-11-24 | Eckardt Ag, 7000 Stuttgart | Magnetic-inductive flow meter |
-
1985
- 1985-04-03 CH CH1459/85A patent/CH668124A5/en not_active IP Right Cessation
-
1986
- 1986-03-20 AT AT86103793T patent/ATE54751T1/en not_active IP Right Cessation
- 1986-03-20 DE DE8686103793T patent/DE3672643D1/en not_active Expired - Fee Related
- 1986-03-20 EP EP86103793A patent/EP0196559B1/en not_active Expired - Lifetime
- 1986-04-02 DK DK148686A patent/DK148686A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK148686D0 (en) | 1986-04-02 |
| DE3672643D1 (en) | 1990-08-23 |
| CH668124A5 (en) | 1988-11-30 |
| EP0196559A1 (en) | 1986-10-08 |
| EP0196559B1 (en) | 1990-07-18 |
| ATE54751T1 (en) | 1990-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHB | Application shelved due to non-payment | ||
| CTFF | Application for supplementary protection certificate (spc) filed |
Free format text: CA 1993 00024, 930615 |
|
| CTFF | Application for supplementary protection certificate (spc) filed |
Free format text: CA 1993 00024, 930615 |
|
| PUP | Patent expired |