JPS5582013A - Eddy current type displacement meter - Google Patents
Eddy current type displacement meterInfo
- Publication number
- JPS5582013A JPS5582013A JP15515978A JP15515978A JPS5582013A JP S5582013 A JPS5582013 A JP S5582013A JP 15515978 A JP15515978 A JP 15515978A JP 15515978 A JP15515978 A JP 15515978A JP S5582013 A JPS5582013 A JP S5582013A
- Authority
- JP
- Japan
- Prior art keywords
- eddy current
- current type
- displacement meter
- coil
- detection coil
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title abstract 5
- 238000001514 detection method Methods 0.000 abstract 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 2
- 229910000896 Manganin Inorganic materials 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- 229910001006 Constantan Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To establish the displacement meter of eddy current type excellent less in the effect of temperature, by constituting the detection coil from the metal with higher electric resistance but lower in the temperature coefficient in comparison with copper and silver, such as Manganin.
CONSTITUTION: The eddy current type displacement meter measuring the displacement of vibration for the rotating body such as turbine takes the detection coil as the resonance circuit. The inductance of coil is changed with the distance between the coil and measured metal, causing the impedance of the resonant circuit change. This change is used for the measurement of the distance between the detection coil and the measured object with non-contact method, but this method is subjected to the effect of the temperature of the detection coil. By using the detection coil made of manganin and constantan which have much more specific resistance of the coil material than copper and silver and lower temperature coefficient, excellent eddy current type displacement meter without being effected by temperature can be established.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515978A JPS5582013A (en) | 1978-12-14 | 1978-12-14 | Eddy current type displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515978A JPS5582013A (en) | 1978-12-14 | 1978-12-14 | Eddy current type displacement meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5582013A true JPS5582013A (en) | 1980-06-20 |
| JPH0219884B2 JPH0219884B2 (en) | 1990-05-07 |
Family
ID=15599806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15515978A Granted JPS5582013A (en) | 1978-12-14 | 1978-12-14 | Eddy current type displacement meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5582013A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261922A (en) * | 1986-05-08 | 1987-11-14 | Sanyo Denki Co Ltd | Brushless resolver |
| JPH0677065A (en) * | 1992-05-22 | 1994-03-18 | Yokokawa Koku Denki Kk | Differential transformer |
| CN103760234A (en) * | 2014-01-28 | 2014-04-30 | 爱德森（厦门）电子有限公司 | Design method for improving limiting sensibility of eddy current detection by using resonant frequency change |
| CN104833720A (en) * | 2015-04-24 | 2015-08-12 | 哈尔滨工业大学深圳研究生院 | Method for single-coil electromagnetic resonance detection of metal pipeline damage |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6621581B2 (en) * | 2015-01-30 | 2019-12-18 | 新川センサテクノロジ株式会社 | Eddy current displacement sensor |
-
1978
- 1978-12-14 JP JP15515978A patent/JPS5582013A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261922A (en) * | 1986-05-08 | 1987-11-14 | Sanyo Denki Co Ltd | Brushless resolver |
| JPH0677065A (en) * | 1992-05-22 | 1994-03-18 | Yokokawa Koku Denki Kk | Differential transformer |
| CN103760234A (en) * | 2014-01-28 | 2014-04-30 | 爱德森（厦门）电子有限公司 | Design method for improving limiting sensibility of eddy current detection by using resonant frequency change |
| CN104833720A (en) * | 2015-04-24 | 2015-08-12 | 哈尔滨工业大学深圳研究生院 | Method for single-coil electromagnetic resonance detection of metal pipeline damage |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0219884B2 (en) | 1990-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IT8321637A1 (en) | Non-contact high thickness gauge for metallic materials above the Curie temperature | |
| JPS5582013A (en) | Eddy current type displacement meter | |
| JPS55141653A (en) | Deterioration state deciding method of strong precipitation hardness type iron base alloy | |
| JPS5575608A (en) | Film thickness measuring unit | |
| JPS5543420A (en) | Metallic material examination device | |
| JPS5366257A (en) | Measuring instrument for fluid | |
| JPS5368293A (en) | Electromagnetic ultrasonic inspecting method | |
| JPS5552921A (en) | Temperature detector | |
| JPS5512401A (en) | Eddy current type range finder | |
| JPS564041A (en) | Moisture meter | |
| SU532762A1 (en) | Contactless method of measuring the flow of electrically conductive media | |
| JPS55116276A (en) | Insulation resistance measuring device for power transmission line | |
| JPS5376060A (en) | Continuous type induction liquid level gauge | |
| LYNCH et al. | Measurement of eddy current conductivity(metal conductivity) | |
| JPS54103376A (en) | Induction type level gauge | |
| JPS5216279A (en) | Measuring method of temperature in high-frequency inductive heating | |
| JPS5633532A (en) | Water content meter | |
| JPS55450A (en) | Mixing ratio meter for powders | |
| JPS54156680A (en) | Micro impedance measuring apparatus | |
| JPS57191523A (en) | Temperature detector | |
| JPS5333691A (en) | Measurement of alternating current corrosion | |
| JPS5491387A (en) | Calorimeter | |
| KULESHOV et al. | Induction coil of finite length for absolute measurements of the electroconductivity of media(Formulas for measurement of impedance of single-layer induction coils) | |
| JPS5319868A (en) | Oscillator of electromagnetic flowmeter | |
| JPS55155222A (en) | Stress measuring apparatus utilizing iron loss |