JPH034203U - - Google Patents
Info
- Publication number
- JPH034203U JPH034203U JP6384889U JP6384889U JPH034203U JP H034203 U JPH034203 U JP H034203U JP 6384889 U JP6384889 U JP 6384889U JP 6384889 U JP6384889 U JP 6384889U JP H034203 U JPH034203 U JP H034203U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- excitation
- coil
- film thickness
- thickness meter
- 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
- 230000005284 excitation Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
第１図は本考案の一実施例による電磁式膜厚計
の測定状態での断面図、第２図は同実施例による
電磁式膜厚計の底面図及び第３図は同実施例によ
る電磁式膜厚計の動作波形図である。
１…プローブ、１ａ…中心磁芯部、１ｂ…外側
磁芯部、３…検知コイル、４…励磁コイル、５…
ギヤツプ。
FIG. 1 is a sectional view of an electromagnetic film thickness meter according to an embodiment of the present invention in a measuring state, FIG. 2 is a bottom view of the electromagnetic film thickness meter according to the embodiment, and FIG. 3 is an electromagnetic film thickness meter according to the embodiment. FIG. 2 is an operation waveform diagram of the type film thickness meter. DESCRIPTION OF SYMBOLS 1... Probe, 1a... Center magnetic core part, 1b... Outer magnetic core part, 3... Detection coil, 4... Excitation coil, 5...
Gap.
Claims (1)
ギヤツプを備えた磁芯に、ギヤツプ間に磁束を発
生させる励磁コイル及び発生磁束の変化を検出す
る検知コイルを巻回して構成され、励磁コイルに
励磁電流を供給する励磁回路及び検知コイルの誘
起電圧を検出する誘起電圧検出回路が付属してい
る電磁式膜厚計において、 磁芯が、中心磁芯部と、この中心磁芯部をギヤ
ツプを置いて包囲すると共に上端部で一体になつ
ている外側磁芯部とより形成され、 前記中心磁芯部に、励磁コイル及び検知コイル
が巻回されていることを特徴とする電磁式膜厚計
。 ２ 励磁回路がＤＣパルス状の励磁電流を発生す
ることを特徴とする請求項１に記載の電磁式膜厚
計。[Scope of Claim for Utility Model Registration] 1. The probe set on the film to be measured has a magnetic core with a gap at the tip, and an excitation coil that generates magnetic flux between the gaps and a detection coil that detects changes in the generated magnetic flux are wound around the magnetic core. In an electromagnetic film thickness meter that is configured by rotating the magnetic core and is attached with an excitation circuit that supplies an excitation current to an excitation coil and an induced voltage detection circuit that detects an induced voltage of a detection coil, a magnetic core is connected to a central magnetic core part, It is formed of an outer magnetic core that surrounds this central magnetic core with a gap and is integrated at the upper end, and that an excitation coil and a detection coil are wound around the central magnetic core. Features an electromagnetic film thickness meter. 2. The electromagnetic film thickness meter according to claim 1, wherein the excitation circuit generates a DC pulsed excitation current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6384889U JPH034203U (en) | 1989-05-31 | 1989-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6384889U JPH034203U (en) | 1989-05-31 | 1989-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH034203U true JPH034203U (en) | 1991-01-17 |
Family
ID=31594262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6384889U Pending JPH034203U (en) | 1989-05-31 | 1989-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034203U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911358A (en) * | 1972-05-31 | 1974-01-31 | ||
| JPS62115303A (en) * | 1985-11-14 | 1987-05-27 | Mito Giken:Kk | Measuring instrument for hardening depth of steel material |
-
1989
- 1989-05-31 JP JP6384889U patent/JPH034203U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911358A (en) * | 1972-05-31 | 1974-01-31 | ||
| JPS62115303A (en) * | 1985-11-14 | 1987-05-27 | Mito Giken:Kk | Measuring instrument for hardening depth of steel material |
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