CN2160884Y - Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre - Google Patents
Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre Download PDFInfo
- Publication number
- CN2160884Y CN2160884Y CN 93230322 CN93230322U CN2160884Y CN 2160884 Y CN2160884 Y CN 2160884Y CN 93230322 CN93230322 CN 93230322 CN 93230322 U CN93230322 U CN 93230322U CN 2160884 Y CN2160884 Y CN 2160884Y
- Authority
- CN
- China
- Prior art keywords
- electrode
- thickness
- measuring
- utility
- model
- 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 - Fee Related
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model provides a magnetoelectric parallel type nonmagnetic plating sensor of a coat thickness measuring device. The utility model is formed by that a close winding coaxial induction coil and a measuring electrode made of soft magnetic material for compensating coil are arranged in a shielding electrode made of nonmagnetic metallic material. Two coils are connected in series, the measuring electrode and the shielding electrode are connected by conducting wire, the whole electrode is arranged in a stainless steel casing which has favorable electrical conductivity and mechanical intensity, and insulation material or colophony are filled in space between each layer. The utility model can continuously move to carry out noncontact and nondestructive inspection. The utility model is suitable for industries of thickness measurement for nonmagnetic coat as well as measuring the nonferromagnetic cladding thickness or coat thickness of the magnetic material surface, such as the thickness measuring of anticorrosion coat in pipeline, the thickness measuring of motorcar spray painting, etc.
Description
The utility model relates to the pick-up unit of the parallel non magnetic plating of a kind of magnetoelectricity, coating thickness, it can detect the nonmagnetic substance film on the ferromagnetism matrix and the thickness of non-ferromagnetic metal film and nonmetal film, and can accomplish that non-fixed point contacts continuous traverse measurement.
The non magnetic coating on the ferromagnetism matrix or the thickness of coating, the thickness of films such as platings such as the zinc of steel surface, chromium, paint, coating and gold, silver, copper, rubber, plastics for example, generally arrive between the hundreds of micron, measure with special coating thickness tester at tens microns.Used coating thickness measuring device table mainly contains reluctance type and induction at present, and these two kinds of instrument are respectively to utilize the magnetostatic effect and the eddy effect of cell winding, the thickness of coating is converted into electrical quantities detects.Be contact between the sensor probe of these two kinds of instrument and the measured piece.Other has the condenser type thicknessmeter, the distance between fixation of sensor and the matrix, makes its traverse measurement continuously; Measure coating thickness with sound wave backscattering method, also at the experimental stage; The traverse measurement continuously of high-voltage spark coat thickness detection equipment, but there is the defective that punctures coating in it.Therefore, used coating thickness detector table still can not carry out continuous mobile noncontact Non-Destructive Testing at present.
The purpose of this utility model is nonferromagnetic plating, the coat thickness detection device that a kind of new structure will be provided, and realizes the measurement of noncontact continuous-moving type, also can carry out a contact type measurement simultaneously.
The purpose of this utility model is achieved in that the non magnetic plating coating thickness detection apparatus of this new structure, and key is the improvement of sensor.This sensor adopts magnetoelectricity parallel, comprises a potential electrode made from soft magnetic material, guarded electrode that nonmagnetic material is made and stainless steel casing.Close around coaxial electrical sensed quantity coil and a compensating coil on potential electrode, the inductance measurement coil stationary is in the potential electrode lower end, and connects with coaxial removable compensating coil, adjusts the spacing of two coils, withstands compensating coil with spring.Guarded electrode is the cylinder made from nonmagnetic material, and the potential electrode that winds behind the coil is contained in the guarded electrode, and fill with insulating cell or resin in the space between potential electrode and the guarded electrode, and potential electrode and guarded electrode connect with lead.Mounted guarded electrode and potential electrode are contained in the stainless steel casing, between guarded electrode and the shell also with insulating cell or resin fill, to guarantee reliable insulating property and mechanical property.
Owing to adopted above structure, constitute a capacitive transducer between potential electrode and the matrix, its output signal is relevant to the thickness h apart from d and coating of matrix with sensor, telefault and compensating coil constitute a reluctive transducer, and its output signal arrives the relevant apart from d of matrix with sensor.Two paths of signals output in parallel through after the signal processor processes, is eliminated the influence of d.Circuit output signal and coating thickness h are linear like this, and be irrelevant with the variation of spacing d, thereby can directly measure coating thickness h, realized contactless continuous traverse measurement.
Accompanying drawing is exactly the sensor synoptic diagram of the parallel non magnetic coating measuring thickness device of this magnetoelectricity.
Among the figure, 1-potential electrode, 2-guarded electrode, 3-shell, 4-telefault, 5-compensating coil, 6-insulating cell or resin, 7-coating, 8-matrix.
Describe the detailed structure of surveying device according to the parallel non magnetic coating of the magnetoelectricity that the utility model proposed in detail below in conjunction with drawings and Examples.
Potential electrode (1) is made with soft magnetic material, close on it around coaxial telefault (4) and compensating coil (5), coil (4) is fixed on potential electrode (1) lower end, and connect with coaxial movable coil (5), adjust the spacing of coil (4) and coil (5), withstand compensating coil with spring.Guarded electrode is the cylinder of making of nonmagnetic material, and the potential electrode that is wound with coil is packed in the guarded electrode (2), and its gap location is with insulating cell or resin (6) filling, and potential electrode (1) connects with lead with guarded electrode (2).Mounted two electrodes are contained in the stainless steel casing (3), and shell (3) requires to have excellent conducting performance and physical strength.Between guarded electrode (2) and the shell (3) also with insulating cell or resin fill.
When reality is tested, electrode can contact with tested matrix (8) surface, can not contact yet, suppose that the distance between them is d, at this moment, constitute a capacitive transducer between potential electrode (1) and the matrix, suppose that coating thickness is h, then its output signal arrives the relevant with coating thickness h apart from d of matrix with electrode; Telefault (4) and compensating ring (5) constitute a reluctive transducer, its output signal also arrives the relevant apart from d of matrix (8) with electrode, two paths of signals output in parallel through after the signal processor processes, is eliminated the influence of d, circuit output signal and coating thickness h are linear, the influence that not changed by spacing d, thus can directly measure coating thickness h, therefore, but but not only contact type measurement but also non-contact measurement have been realized continuous Non-Destructive Testing.
Condenser network is measured in the circuit utilization of the parallel non magnetic plating of magnetoelectricity provided by the utility model, coating measuring thickness device and the inductance measuring circuit can be finished, do not need strict standard value of demarcating capacitor and inductor, it is consistent to need only the two outfit, can compensate mutually to get final product, so handling ease.This device can carry out the continuous traverse measurement of noncontact, is convenient to that robotization is on a large scale carried out on the test specimen surface and detects, and does not scratch measured surface, and probe does not does not wear and tear.This device is applicable to that all relate to the industry of non magnetic plating, coat thickness detection, for example, and the detection of plastic sheeting or paper sheet thickness, oil transportation gas transmission aqueduct inner anticorrosioning coating thickness; Be applicable to the detection of non magnetic coating on all ferrimagnet surfaces or coating thickness, as the detection of automotive lacquer thickness.
Claims (4)
- The sensor of 1, the parallel non magnetic plating of a kind of magnetoelectricity, coating thickness detector is made up of potential electrode, guarded electrode, coil, shell, insulating material etc.It is characterized in that, potential electrode (1) is close around telefault (4) and compensating coil (5), telefault (4) is fixed on the potential electrode (1), two coil coupled in series, install the potential electrode (1) behind the coil, pack in the guarded electrode (2), potential electrode (1) connects with lead with guarded electrode (2).
- The sensor of 2, the parallel non magnetic plating of magnetoelectricity according to claim 1, coating thickness detector is characterized in that the material of potential electrode (1) is made with soft magnetic material, and the material of guarded electrode (2) is the nonmagnetic metal material.
- The sensor of 3, the parallel non magnetic plating of magnetoelectricity according to claim 1 and 2, coating thickness detector is characterized in that between potential electrode (1) and the guarded electrode (2) with insulating cell or resin (6) filling and fixing.
- The sensor of 4, the parallel non magnetic plating of magnetoelectricity according to claim 1, coating thickness detector is characterized in that said potential electrode and guarded electrode are installed in the stainless steel casing (3), and gap location is filled with insulating cell or resin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230322 CN2160884Y (en) | 1993-03-04 | 1993-03-04 | Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230322 CN2160884Y (en) | 1993-03-04 | 1993-03-04 | Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2160884Y true CN2160884Y (en) | 1994-04-06 |
Family
ID=33807002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93230322 Expired - Fee Related CN2160884Y (en) | 1993-03-04 | 1993-03-04 | Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2160884Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416217C (en) * | 2003-05-15 | 2008-09-03 | 欧姆龙株式会社 | Thickness detecting sensor |
| CN104482852A (en) * | 2014-09-28 | 2015-04-01 | 山东中科普锐检测技术有限公司 | Eddy current type coating thickness gauge circuit based on mobile display terminal |
| CN104567647A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Method for measuring thickness of foam plastic board with eddy current method |
| CN107300725A (en) * | 2016-04-14 | 2017-10-27 | 华云升达(北京)气象科技有限责任公司 | A kind of flexible sleet sensor of magnetic hysteresis and icing thickness detecting method |
-
1993
- 1993-03-04 CN CN 93230322 patent/CN2160884Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416217C (en) * | 2003-05-15 | 2008-09-03 | 欧姆龙株式会社 | Thickness detecting sensor |
| CN104567647A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Method for measuring thickness of foam plastic board with eddy current method |
| CN104482852A (en) * | 2014-09-28 | 2015-04-01 | 山东中科普锐检测技术有限公司 | Eddy current type coating thickness gauge circuit based on mobile display terminal |
| CN107300725A (en) * | 2016-04-14 | 2017-10-27 | 华云升达(北京)气象科技有限责任公司 | A kind of flexible sleet sensor of magnetic hysteresis and icing thickness detecting method |
| CN107300725B (en) * | 2016-04-14 | 2019-09-13 | 华云升达(北京)气象科技有限责任公司 | A kind of magnetic hysteresis is stretched sleet sensor and icing thickness detecting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4295092A (en) | Apparatus for and method of detecting and measuring corrosion damage in pipe | |
| CA1217865A (en) | Determination of coating thickness | |
| CN101532816B (en) | Multi-layered thickness eddy current testing device based on giant magnetoresistance sensor and intelligent algorithm | |
| CN101131314B (en) | Nondestructive thickness measuring method for nickel coat on Fe substrate | |
| US4806863A (en) | Eddy current apparatus including cylindrical coil with flux concentrator for high resolution detection of flaws in conductive objects | |
| JP2006506621A (en) | Non-contact type surface conductivity measurement probe | |
| CN107990820A (en) | A kind of plate thickness information detecting method based on impulse eddy current | |
| CN102927895A (en) | Quick gap electromagnetic measurement method and sensor device | |
| CN109444257A (en) | A kind of Pulsed eddy current testing device and method based on frequency domain lift-off crosspoint | |
| CN113175863B (en) | Iron powder doped putty layer identification method and paint film instrument | |
| CN112034230B (en) | Current sensor with spiral shielding shell | |
| CN2160884Y (en) | Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre | |
| CN202796412U (en) | Flexibility coil current transformer | |
| Syas’ ko et al. | Measurement of electromagnetic parameters of metal-coating thickness measures | |
| WO2018171998A1 (en) | Device for measuring pressure | |
| CN110907528A (en) | Magnetoelectric resonance sensor for measuring hydrogen, test device and test method | |
| CN218781752U (en) | Ultrathin probe for extreme gap detection environment and eddy current sensor | |
| CN102087245A (en) | Amorphous alloy based electromagnetic detection sensor | |
| CA1330829C (en) | Metal measuring method and apparatus | |
| CN102818920B (en) | Current measuring method and device based on electromagnetic force and through optical fibers | |
| CN103499272A (en) | Wide-range magnetic thickness measuring device for non-magnetic coating of ferromagnetic component and detection method of wide-range magnetic thickness measuring device | |
| Yu et al. | Investigation on conductivity invariance in eddy current NDT and its application on magnetic permeability measurement | |
| RU2456589C1 (en) | Method for eddy current-measurement of thickness of metal coatings | |
| CN110988042B (en) | Shielding packaging bag interlayer conductivity testing method based on impedance loss method | |
| CN116519747B (en) | Paint thickness calculation and substrate material identification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |