JPH0217631U - - Google Patents
Info
- Publication number
- JPH0217631U JPH0217631U JP9565888U JP9565888U JPH0217631U JP H0217631 U JPH0217631 U JP H0217631U JP 9565888 U JP9565888 U JP 9565888U JP 9565888 U JP9565888 U JP 9565888U JP H0217631 U JPH0217631 U JP H0217631U
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- excitation
- coil
- excitation coil
- calculated
- 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
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005284 excitation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
第１図は本考案に係わる誘導形液位計の一実施
例を示す回路図、第２図は同他の実施例を示す回
路図、第３図は従来の誘導形液位計の構成を示す
回路図、第４図は液位Ｌと液位検出電圧ＶＳとの
関係を示すグラフである。
２…励磁コイル、３…検出コイル、５，１０…
整流器、６，１１…増幅器、８…励磁回路、９…
抵抗、１２…除算器、１３，１７…最終演算回路
、１４…可変抵抗、１５，１６…引算器。
Fig. 1 is a circuit diagram showing one embodiment of an inductive level meter according to the present invention, Fig. 2 is a circuit diagram showing another embodiment of the same, and Fig. 3 shows the configuration of a conventional inductive level meter. The circuit diagram shown in FIG. 4 is a graph showing the relationship between the liquid level L and the liquid level detection voltage VS. 2... Excitation coil, 3... Detection coil, 5, 10...
Rectifier, 6, 11...Amplifier, 8...Excitation circuit, 9...
Resistor, 12... Divider, 13, 17... Final arithmetic circuit, 14... Variable resistor, 15, 16... Subtractor.
Claims (1)
コイルと検出コイルとを直立状態で並設し、前記
励磁コイルに一定の基準電流値を与える前提で成
立する所定の演算式に前記検出コイルの誘起電圧
を代入することにより、前記両コイルの液中浸漬
に伴なう誘導結合係数の変化を利用して対象とな
る液位を演算により求めるようにした誘導形液位
計において、 前記所定の演算式を前記励磁コイルを流れる実
電流値に基いて修正し、前記励磁電流の変動に伴
う算出液位の誤差を補正すること、を特徴とする
誘導形液位計。[Claims for Utility Model Registration] A predetermined claim established on the premise that an excitation coil and a detection coil, which are inductively coupled to each other, are installed in parallel in an upright state in a liquid level measurement environment, and a constant reference current value is applied to the excitation coil. By substituting the induced voltage of the detection coil into the calculation formula, the target liquid level is calculated by using the change in the inductive coupling coefficient due to the immersion of both the coils in the liquid. In the liquid level meter, the predetermined calculation formula is corrected based on the value of the actual current flowing through the excitation coil, and an error in the calculated liquid level due to fluctuations in the excitation current is corrected. Total.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9565888U JPH0217631U (en) | 1988-07-21 | 1988-07-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9565888U JPH0217631U (en) | 1988-07-21 | 1988-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0217631U true JPH0217631U (en) | 1990-02-05 |
Family
ID=31320353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9565888U Pending JPH0217631U (en) | 1988-07-21 | 1988-07-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0217631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312620A (en) * | 1992-02-18 | 1993-11-22 | Nippon Steel Corp | Molten metal level detecting/correcting method |
| JP2012058070A (en) * | 2010-09-08 | 2012-03-22 | Denso Corp | Liquid level detection system |
-
1988
- 1988-07-21 JP JP9565888U patent/JPH0217631U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312620A (en) * | 1992-02-18 | 1993-11-22 | Nippon Steel Corp | Molten metal level detecting/correcting method |
| JP2012058070A (en) * | 2010-09-08 | 2012-03-22 | Denso Corp | Liquid level detection system |
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