JPS58119733U - Capacitive level measuring device - Google Patents
Capacitive level measuring deviceInfo
- Publication number
- JPS58119733U JPS58119733U JP1581782U JP1581782U JPS58119733U JP S58119733 U JPS58119733 U JP S58119733U JP 1581782 U JP1581782 U JP 1581782U JP 1581782 U JP1581782 U JP 1581782U JP S58119733 U JPS58119733 U JP S58119733U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- current
- fluid
- measured
- supplying
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はレベル検出センサの例を示す図、第２・図は補
償用容量素子の一例を示す図、第３図はこの考案による
レベル測定装置の一例を示す回路図、第４図及び第５図
はそれぞれ位相反転器の例を示す回路図、第６図はこの
考案によるレベル測定装置の他の例を示す回路図、第７
図はその変形例のｉ部を示す接続図である。
１０：Ｌ／ベベル出センサ、１３：被測定流体としての
液、１４：被測定レベル面、１５：補償用容量 ・
素子、１８：増幅器、２３． ２４． ２６：励振電源
、２５、 ３４：位相反転器、３３：モータ。
Ｃｓ
矛４ （支） −、Fig. 1 is a diagram showing an example of a level detection sensor, Fig. 2 is a diagram showing an example of a compensating capacitive element, Fig. 3 is a circuit diagram showing an example of a level measuring device according to this invention, 5 is a circuit diagram showing an example of a phase inverter, FIG. 6 is a circuit diagram showing another example of the level measuring device according to this invention, and FIG.
The figure is a connection diagram showing the i part of the modified example. 10: L/bevel output sensor, 13: Liquid as the fluid to be measured, 14: Level surface to be measured, 15: Capacity for compensation ・
Element, 18: Amplifier, 23. 24. 26: Excitation power supply, 25, 34: Phase inverter, 33: Motor. Cs spear 4 (branch) -,
Claims (1)
ベル検出用センサと、増幅器と、その増幅器の入力側へ
上記レベル検出用センサの静電容量に対応した電流を供
給する第１手段と、上記レベル検出用センサに流体がな
い状態において上記第１手段により供給される電流と等
しく逆極性の電流を上記増幅器の入力側へ供給する第２
手段と、上記被測定流体内に配され、その被測定流体の
誘電率に応じた静電容量をもつ補償用容量素子と、その
補償用容量素子の静電容量に対応し゛、かつ上記第１手
段の電流と蓮極性の電流を上記増幅器の入力側へ供給す
る第３手段と、上記補償用容量素子が上記被測定流体内
にない時に上記第３手段により供給される電流と等しく
逆極性の補償電流を上記増幅器の入力側へ供給する第４
手段と、上記増幅器の入力電流がゼ用こなるように、そ
の増幅器の出力に応じて上記補償用容量素子の電流及び
上記補償電流を制御する手段を有し、上記増幅器の出力
側に被測定流体レベルに応じた出力を得る静電容量式レ
ベル測定装置。a level detection sensor whose capacitance changes in accordance with changes in the level of the fluid to be measured; an amplifier; and a first means for supplying a current corresponding to the capacitance of the level detection sensor to the input side of the amplifier; , a second means for supplying a current equal to and opposite in polarity to the current supplied by the first means to the input side of the amplifier when there is no fluid in the level detection sensor;
a compensating capacitive element arranged in the fluid to be measured and having a capacitance corresponding to the dielectric constant of the fluid to be measured; third means for supplying a current of opposite polarity to the current of the means to the input side of the amplifier; a fourth supplying a compensation current to the input side of the amplifier;
and means for controlling the current of the compensation capacitive element and the compensation current according to the output of the amplifier so that the input current of the amplifier is adjusted to zero, and a device to be measured is provided on the output side of the amplifier. A capacitive level measuring device that obtains an output according to the fluid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1581782U JPS58119733U (en) | 1982-02-05 | 1982-02-05 | Capacitive level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1581782U JPS58119733U (en) | 1982-02-05 | 1982-02-05 | Capacitive level measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58119733U true JPS58119733U (en) | 1983-08-15 |
Family
ID=30028217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1581782U Pending JPS58119733U (en) | 1982-02-05 | 1982-02-05 | Capacitive level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119733U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5663215A (en) * | 1979-10-30 | 1981-05-29 | Yokogawa Hokushin Electric Corp | Electrostatic capacity type fuel meter |
-
1982
- 1982-02-05 JP JP1581782U patent/JPS58119733U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5663215A (en) * | 1979-10-30 | 1981-05-29 | Yokogawa Hokushin Electric Corp | Electrostatic capacity type fuel meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58119733U (en) | Capacitive level measuring device | |
| JPS589515Y2 (en) | power supply | |
| JPS606128U (en) | liquid crystal display device | |
| JPS59166124U (en) | Capacitance voltage conversion circuit | |
| JPS6210658U (en) | ||
| JPS58158380U (en) | Ultrasonic moving object detector | |
| JPS5999517U (en) | linear detector | |
| JPS58187734U (en) | Liquid level detection device | |
| JPS59116108U (en) | Workpiece seating confirmation device | |
| JPS59164323U (en) | Amplifier volume control circuit | |
| JPS58183524U (en) | power circuit | |
| JPS5863890U (en) | high frequency power inverter | |
| JPS5893045U (en) | proximity switch | |
| JPH0390508U (en) | ||
| JPS6079292U (en) | power circuit | |
| JPS585106U (en) | Zero potential control circuit | |
| JPS5956819U (en) | Detection circuit with temperature compensation | |
| JPS59104067U (en) | Rotation speed detection device | |
| JPS5850575U (en) | Control device for electronic equipment | |
| JPS59118312U (en) | Amplifier | |
| JPS6123720U (en) | phase shifter | |
| JPS5899914U (en) | traveling wave tube amplifier circuit | |
| JPS60114915U (en) | Dielectric constant correction type capacitance level measuring device | |
| JPS6026753U (en) | relay circuit | |
| JPS62176729U (en) |