JPS6399233U - - Google Patents
Info
- Publication number
- JPS6399233U JPS6399233U JP19516986U JP19516986U JPS6399233U JP S6399233 U JPS6399233 U JP S6399233U JP 19516986 U JP19516986 U JP 19516986U JP 19516986 U JP19516986 U JP 19516986U JP S6399233 U JPS6399233 U JP S6399233U
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- coil
- coils
- winding density
- signal source
- 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 8
- 238000001514 detection method Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 3
- 230000004907 flux Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Level Indicators Using A Float (AREA)
Description
第１図は本考案よりなる液面検出装置の実施例
を示した説明図、第２図及び第３図は本考案の他
の実施例を示した夫々の要部説明図、第４図は従
来例の説明図、第５図はその動作原理を説明する
回路図、第６図は誘導型液面センサの出力特性図
である。
１２０…樹脂性コア、２０…高透磁率材料。
FIG. 1 is an explanatory diagram showing an embodiment of the liquid level detection device according to the present invention, FIGS. 2 and 3 are explanatory diagrams of the main parts of other embodiments of the present invention, and FIG. An explanatory diagram of a conventional example, FIG. 5 is a circuit diagram explaining its operating principle, and FIG. 6 is an output characteristic diagram of an inductive liquid level sensor. 120...Resin core, 20...High magnetic permeability material.
Claims (1)
つて巻回密度が密から疎になるように形成された
上部コイル１２２１と前記中間点から下方に向つ
て巻回密度が疎から密になりかつ前記上部コイル
１２２１とは逆方向の磁束を発生するように形成
された下部コイル１２２２との直列体又は並列体
からなる第１のコイル１２２と、該第１のコイル
１２２に磁気結合されかつ液面位の変化方向に沿
つて略均一な巻回密度に形成された第２のコイル
１２４と、前記第１及び第２のコイル１２２，１
２４が巻回された樹脂性コア１２０と、前記第１
又は第２のコイル１２２，１２４のコイル軸に対
して同軸的に配設されかつ液面位に応じて上下動
するシヨートリング１２６，１２６′とからなる
誘導型液面センサ１２を備え、前記第１又は第２
のコイル１２２，１２４のいずれか一方に交流信
号源１１を接続することにより該第１又は第２の
コイル１２２，１２４のいずれか他方から誘導起
電力を得、該誘導起電力を前記交流信号源１１の
半サイクル毎に検波することにより得られる波形
の実効値を検出出力としてなる液面検出装置にお
いて、前記樹脂性コア１２０の内部に、そのコア
１２０の上端部及び下端の磁束密度を増大させる
ための高透磁率材料２０を埋設したことを特徴と
する液面検出装置。 The upper coil 1221 is formed so that the winding density becomes thinner to sparser from above toward the middle point along the direction of change in the liquid level, and the winding density becomes thinner from sparse toward the bottom from the middle point. a first coil 122 formed in series or in parallel with a lower coil 1222 formed to generate magnetic flux in the opposite direction to the upper coil 1221; a second coil 124 formed with a substantially uniform winding density along the direction of change in the liquid level, and the first and second coils 122, 1
24 wound around the resin core 120, and the first
Alternatively, the inductive liquid level sensor 12 is provided with shot rings 126, 126' disposed coaxially with respect to the coil axes of the second coils 122, 124 and that move up and down according to the liquid level, or second
By connecting the AC signal source 11 to either one of the first or second coils 122, 124, an induced electromotive force is obtained from the other of the first or second coils 122, 124, and the induced electromotive force is applied to the AC signal source. In a liquid level detection device whose detection output is the effective value of a waveform obtained by detection every 11 half cycles, the magnetic flux density at the upper and lower ends of the core 120 is increased inside the resin core 120. A liquid level detection device characterized by having a high magnetic permeability material 20 embedded therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19516986U JPS6399233U (en) | 1986-12-18 | 1986-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19516986U JPS6399233U (en) | 1986-12-18 | 1986-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6399233U true JPS6399233U (en) | 1988-06-27 |
Family
ID=31152813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19516986U Pending JPS6399233U (en) | 1986-12-18 | 1986-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6399233U (en) |
-
1986
- 1986-12-18 JP JP19516986U patent/JPS6399233U/ja active Pending
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