JPS5679912A - Liquid level measuring apparatus - Google Patents
Liquid level measuring apparatusInfo
- Publication number
- JPS5679912A JPS5679912A JP15828479A JP15828479A JPS5679912A JP S5679912 A JPS5679912 A JP S5679912A JP 15828479 A JP15828479 A JP 15828479A JP 15828479 A JP15828479 A JP 15828479A JP S5679912 A JPS5679912 A JP S5679912A
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- bridge
- buoyancy
- coil
- fluctuations
- 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
- Level Indicators Using A Float (AREA)
Abstract
PURPOSE: To obtain a liquid level measuring apparatus that has no moving mass of a movable part by converting fluctuations of buoyancy exerting on a body through fluctuations of the liquid level of a liquid into force required to hold the body at a constant position and then by measuring this force electrically.
CONSTITUTION: Body 3 moving up and down with rod 4 guided by guide 5 is held within liquid 1 and the buoyancy fluctuation measuring means consisting of moving iron core 6b and coil 6a is provided at the tip of rod 4. Further, needle 7a of potentiometer 7 constituting bridge 8 is coupled with rod 4 and the output of bridge 8 is supplied to coil 6a by way of operational amplifier 9 and ammeter 10. As liquid level 2 fluctuates, the buoyancy exerting on body 3 varies and the balance of the bridge is lost, but the unbalance voltage of bridge 8 is amplified by amplifier 9 and supplied to coil 6a to keep the balance of bridge 8. For this purpose, the buoyancy on body 3, i.e. fluctuations of the liquid level can be found by displaying the current at that time by ammeter 10.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15828479A JPS5679912A (en) | 1979-12-05 | 1979-12-05 | Liquid level measuring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15828479A JPS5679912A (en) | 1979-12-05 | 1979-12-05 | Liquid level measuring apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5679912A true JPS5679912A (en) | 1981-06-30 |
Family
ID=15668226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15828479A Pending JPS5679912A (en) | 1979-12-05 | 1979-12-05 | Liquid level measuring apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5679912A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875370A (en) * | 1988-02-08 | 1989-10-24 | Witronic Elektronische Gerate Gesellschaft M.B.H. | Apparatus for measuring the contents of a tank |
-
1979
- 1979-12-05 JP JP15828479A patent/JPS5679912A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875370A (en) * | 1988-02-08 | 1989-10-24 | Witronic Elektronische Gerate Gesellschaft M.B.H. | Apparatus for measuring the contents of a tank |
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