CA1293297C - Method and apparatus for distance measurement between two opposing relatively moving surfaces - Google Patents
Method and apparatus for distance measurement between two opposing relatively moving surfacesInfo
- Publication number
- CA1293297C CA1293297C CA000565975A CA565975A CA1293297C CA 1293297 C CA1293297 C CA 1293297C CA 000565975 A CA000565975 A CA 000565975A CA 565975 A CA565975 A CA 565975A CA 1293297 C CA1293297 C CA 1293297C
- Authority
- CA
- Canada
- Prior art keywords
- poles
- core
- coil
- housing
- grinding
- 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.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 title abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims abstract description 29
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 40
- 239000000696 magnetic material Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 abstract description 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49,549 | 1987-05-14 | ||
| US07/049,549 US4804912A (en) | 1987-05-14 | 1987-05-14 | Apparatus for electromagnetically measuring the distance between two opposing grinding surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1293297C true CA1293297C (en) | 1991-12-17 |
Family
ID=21960414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000565975A Expired - Lifetime CA1293297C (en) | 1987-05-14 | 1988-05-05 | Method and apparatus for distance measurement between two opposing relatively moving surfaces |
Country Status (6)
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI80146C (fi) * | 1986-10-31 | 1990-04-10 | Yhtyneet Paperitehtaat Oy | Foerfarande och anordning foer maetning av avstaondet mellan malskivorna vid en raffinoer. |
| US5132617A (en) * | 1990-05-16 | 1992-07-21 | International Business Machines Corp. | Method of measuring changes in impedance of a variable impedance load by disposing an impedance connected coil within the air gap of a magnetic core |
| US5242524A (en) * | 1990-05-16 | 1993-09-07 | International Business Machines Corporation | Device for detecting an end point in polishing operations |
| US5036901A (en) * | 1990-06-22 | 1991-08-06 | Armco Inc. | Electronic gap sensor and method |
| US5432444A (en) * | 1990-10-23 | 1995-07-11 | Kaisei Engineer Co., Ltd. | Inspection device having coaxial induction and exciting coils forming a unitary coil unit |
| US5115192A (en) * | 1990-11-06 | 1992-05-19 | Nova Corporation Of Alberta | Magnetic displacement transducer with saturation compensation |
| US6366097B1 (en) * | 2000-04-26 | 2002-04-02 | Verizon Laboratories Inc. | Technique for the measurement of reflection coefficients in stored energy systems |
| SE521893C2 (sv) * | 2001-09-26 | 2003-12-16 | Daprox Ab | Givare för avståndsmätning |
| US7248041B2 (en) * | 2003-07-28 | 2007-07-24 | Cummins, Inc. | Device and method for measuring transient magnetic performance |
| US9304177B2 (en) * | 2012-03-22 | 2016-04-05 | Tdk Corporation | Movable coil scanner systems and methods |
| FR3007517B1 (fr) | 2013-06-20 | 2016-08-19 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
| FR3009076B1 (fr) * | 2013-07-26 | 2017-03-31 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
| FR3009075B1 (fr) * | 2013-07-26 | 2016-09-09 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
| CN106716836B (zh) * | 2014-09-09 | 2020-11-20 | 巴鲁夫公司 | 感应式接近度传感器或距离传感器的传感器元件和用于操作所述传感器元件的方法 |
| US10184846B2 (en) * | 2016-08-31 | 2019-01-22 | General Electric Company | Systems and methods for compensating for air gap sensitivity in torque sensors |
| JP7291558B2 (ja) * | 2019-07-03 | 2023-06-15 | 株式会社荏原製作所 | 渦電流センサ |
| SE544564C2 (en) * | 2020-08-26 | 2022-07-19 | Daprox Ab | A beating gap sensor device for a refiner apparatus and calibration method |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531414A (en) * | 1947-06-16 | 1950-11-28 | Lenard R Engvall | Electrical pressure measuring device |
| US3434670A (en) * | 1966-07-07 | 1969-03-25 | Pulp Paper Res Inst | Apparatus for measuring out of tram and plate separation of disc refiners |
| US3441840A (en) * | 1967-03-31 | 1969-04-29 | Martin Marietta Corp | Electronic thickness meter having direct readout of coating thickness |
| JPS4813057B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1969-08-08 | 1973-04-25 | ||
| DE2345848C3 (de) * | 1973-09-12 | 1986-06-19 | ELEKTRO-PHYSIK Hans Nix & Dr.-Ing. E. Steingroever GmbH & Co KG, 5000 Köln | Elektromagnetischer Schichtdickenmesser |
| JPS5543070B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-05-02 | 1980-11-04 | ||
| SE416844B (sv) * | 1979-06-05 | 1981-02-09 | Sunds Defibrator | Sett och anordning for avstandsmetning mellan tva motstaende ytor av magnetiskt ledande material |
| DE3112991C2 (de) * | 1981-04-01 | 1985-12-12 | Hoesch Ag, 4600 Dortmund | Rundschleifmaschine zum kontrollierten Abschleifen von Rissen an Walzen |
| JPS59166801A (ja) * | 1983-03-09 | 1984-09-20 | Nippon Kokan Kk <Nkk> | 渦電流を利用した差動帰還型距離測定装置 |
| US4652820A (en) * | 1983-03-23 | 1987-03-24 | North American Philips Corporation | Combined position sensor and magnetic motor or bearing |
| IT1163522B (it) * | 1983-06-15 | 1987-04-08 | Cise Spa | Misuratore di difetti superficiali e subsuperficiali di corpi metallici al di sopra della temperature di curie |
| US4661774A (en) * | 1983-12-12 | 1987-04-28 | Harris Graphics Corporation | Method and apparatus for monitoring film thickness between rotatable rolls |
| EP0164057A3 (de) * | 1984-06-08 | 1988-05-04 | Mecapec S.A. | Verfahren und Vorrichtungen zur Feststellung von Oberflächenfehlern an stabförmigem, ferromagnetischem Gut |
| US4618825A (en) * | 1984-10-11 | 1986-10-21 | Helmut Fischer | Electro-magnetic thickness measuring probe |
| JPS62150622A (ja) * | 1985-12-04 | 1987-07-04 | ポ−テイジ エレクトリツク プロダクツ，インコ−ポレイテイド | 耐漏ケ−シング付きサ−モスタツト装置 |
-
1987
- 1987-05-14 US US07/049,549 patent/US4804912A/en not_active Expired - Lifetime
-
1988
- 1988-05-05 CA CA000565975A patent/CA1293297C/en not_active Expired - Lifetime
- 1988-05-11 NO NO882062A patent/NO174024B/no unknown
- 1988-05-11 FI FI882206A patent/FI94464C/fi not_active IP Right Cessation
- 1988-05-12 BR BR8802327A patent/BR8802327A/pt not_active IP Right Cessation
- 1988-05-13 JP JP63115046A patent/JPH0197802A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FI94464C (fi) | 1995-09-11 |
| NO882062D0 (no) | 1988-05-11 |
| FI882206A7 (fi) | 1988-11-15 |
| FI94464B (fi) | 1995-05-31 |
| NO174024B (no) | 1993-11-22 |
| NO882062L (no) | 1988-11-15 |
| BR8802327A (pt) | 1988-12-13 |
| FI882206A0 (fi) | 1988-05-11 |
| JPH0197802A (ja) | 1989-04-17 |
| US4804912A (en) | 1989-02-14 |
| NO174024C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1994-03-02 |
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| CN215726346U (zh) | 一种电涡流传感器探头及电涡流传感器 | |
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| CN113607264A (zh) | 一种电涡流传感器探头及电涡流传感器 | |
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| SE509970C2 (sv) | Förfarande för mätning av koncentrationen av cellulosamaterial i en vattensuspension vid malning av träflis samt anordning för utövande av förfarandet | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |