JPS57520A - Electronic type flowmeter - Google Patents
Electronic type flowmeterInfo
- Publication number
- JPS57520A JPS57520A JP7405680A JP7405680A JPS57520A JP S57520 A JPS57520 A JP S57520A JP 7405680 A JP7405680 A JP 7405680A JP 7405680 A JP7405680 A JP 7405680A JP S57520 A JPS57520 A JP S57520A
- Authority
- JP
- Japan
- Prior art keywords
- outputs
- signals
- detected
- alarm
- pulse
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
- G01F15/063—Indicating or recording devices for remote indication using electrical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Flowmeters (AREA)
Abstract
PURPOSE:To easily detect water leakage by generating an alarm when more than prescribed repetitive time intervals of an object which moves repeatedly according to measuring flow rates are measured continuously. CONSTITUTION:The revolutions of the impeller of a flowmeter are detected with the sensors provided at two points, by which two signals (a), (b) are obtained. The inputting sequence of the signals (a), (b) is detected with an input circuit 11, and a forward-backward decision signal (c) is inputted to an adder-subtractor 12. Further, the signals (a), (b) are ANDed and the pulse intervals T of stepping pulses (d) are time-measured 21. A controller 22 supplies the correction coefft. corresponding to the flow rate of a correction table 23 to the adder-subtractor 12 by the pulse intervals T and the forward-backward decision signal (c), has the outputs thereof integrated by a reversible integrating counter 13; at the same time, when the pulse intervals T are within the prescribed range having been stored in the table 23, it outputs a pulse to the integrating counter 31 which outputs an alarm at a prescribed value, and if they are outside of the range, it resets the counter, so that the water leakage is detected by the alarm output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405680A JPS57520A (en) | 1980-06-02 | 1980-06-02 | Electronic type flowmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405680A JPS57520A (en) | 1980-06-02 | 1980-06-02 | Electronic type flowmeter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57520A true JPS57520A (en) | 1982-01-05 |
Family
ID=13536143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7405680A Pending JPS57520A (en) | 1980-06-02 | 1980-06-02 | Electronic type flowmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57520A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59226826A (en) * | 1983-06-07 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Flow rate measuring device |
JPS59226825A (en) * | 1983-06-07 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Flow rate measuring device |
JPS604816A (en) * | 1983-06-23 | 1985-01-11 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
JPS604817A (en) * | 1983-06-23 | 1985-01-11 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
JPS626122A (en) * | 1985-07-02 | 1987-01-13 | Sigma Gijutsu Kogyo Kk | Rotation detector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5382454A (en) * | 1976-12-28 | 1978-07-20 | Tokyo Gas Co Ltd | Detecting apparatus for momentary flow rate from volume pulse signals |
-
1980
- 1980-06-02 JP JP7405680A patent/JPS57520A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5382454A (en) * | 1976-12-28 | 1978-07-20 | Tokyo Gas Co Ltd | Detecting apparatus for momentary flow rate from volume pulse signals |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59226826A (en) * | 1983-06-07 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Flow rate measuring device |
JPS59226825A (en) * | 1983-06-07 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Flow rate measuring device |
JPS6367130B2 (en) * | 1983-06-07 | 1988-12-23 | Matsushita Electric Ind Co Ltd | |
JPS604816A (en) * | 1983-06-23 | 1985-01-11 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
JPS604817A (en) * | 1983-06-23 | 1985-01-11 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
JPH0472176B2 (en) * | 1983-06-23 | 1992-11-17 | Matsushita Electric Ind Co Ltd | |
JPS626122A (en) * | 1985-07-02 | 1987-01-13 | Sigma Gijutsu Kogyo Kk | Rotation detector |
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