JPS5836320U - Capacitive liquid level sensor - Google Patents
Capacitive liquid level sensorInfo
- Publication number
- JPS5836320U JPS5836320U JP13189081U JP13189081U JPS5836320U JP S5836320 U JPS5836320 U JP S5836320U JP 13189081 U JP13189081 U JP 13189081U JP 13189081 U JP13189081 U JP 13189081U JP S5836320 U JPS5836320 U JP S5836320U
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- level sensor
- electrode pair
- liquid
- capacitive liquid
- 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
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来例を示す構成図、第２図は本考案の一実施
例を示す構成図、第３図は第２図の要部を拡大して示す
斜視図、第４図は電気回路図である。
２・・・・・・第１液体、４・・・・・・第２液体、６
・・・・・・絶縁性内筒、７〜１１・・・・・・金属板
、１２・・・・・・金属外筒、１７Ｘ〜１７ｄ・・・・
・・ブリッジ回路、１８ａ〜１８ｄ・・・・・・差動ア
ンプ、１９ａ〜１９ｅ・・・・・・コンパレータ、２０
ａ〜’ｌ Ｑ ｂ−−−−−−ＬＥＤ０第３図
第４図Fig. 1 is a block diagram showing a conventional example, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is a perspective view showing an enlarged main part of Fig. 2, and Fig. 4 is an electric circuit. It is a diagram. 2...First liquid, 4...Second liquid, 6
...Insulating inner tube, 7-11...Metal plate, 12...Metal outer tube, 17X-17d...
...Bridge circuit, 18a-18d...Differential amplifier, 19a-19e...Comparator, 20
a~'l Q b------LED0Figure 3Figure 4
Claims (1)
を検知する複数個の電極対と、第２液体の有無を検知す
る電極対とを有し、上記各電極対における誘電率の差に
より生じる静電容量変化を電圧変化に変換する手段と、
基準電極対に対する他の電極対における電圧変化を比較
して該比較状態を表示する手段とを備えてなることを特
徴とする静電容量式液面センサ。It has a reference electrode pair that is not immersed in the liquid surface, a plurality of electrode pairs that detect the liquid level of the first liquid, and an electrode pair that detects the presence or absence of the second liquid, and the dielectric constant of each electrode pair is means for converting a capacitance change caused by the difference into a voltage change;
A capacitive liquid level sensor comprising means for comparing voltage changes at other electrode pairs with respect to a reference electrode pair and displaying the comparison state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189081U JPS5836320U (en) | 1981-09-03 | 1981-09-03 | Capacitive liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189081U JPS5836320U (en) | 1981-09-03 | 1981-09-03 | Capacitive liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5836320U true JPS5836320U (en) | 1983-03-09 |
Family
ID=29925449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13189081U Pending JPS5836320U (en) | 1981-09-03 | 1981-09-03 | Capacitive liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836320U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935739A (en) * | 1974-04-10 | 1976-02-03 | Liquidometer Corporation | Liquid level gauging apparatus |
| JPS53131069A (en) * | 1977-04-12 | 1978-11-15 | Nippon Denpa Kk | Liquid level senser |
-
1981
- 1981-09-03 JP JP13189081U patent/JPS5836320U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935739A (en) * | 1974-04-10 | 1976-02-03 | Liquidometer Corporation | Liquid level gauging apparatus |
| JPS53131069A (en) * | 1977-04-12 | 1978-11-15 | Nippon Denpa Kk | Liquid level senser |
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