JPS57201831A - Water leak detector - Google Patents
Water leak detectorInfo
- Publication number
- JPS57201831A JPS57201831A JP8690681A JP8690681A JPS57201831A JP S57201831 A JPS57201831 A JP S57201831A JP 8690681 A JP8690681 A JP 8690681A JP 8690681 A JP8690681 A JP 8690681A JP S57201831 A JPS57201831 A JP S57201831A
- Authority
- JP
- Japan
- Prior art keywords
- water
- leak
- circuit
- output
- discriminating circuit
- 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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
PURPOSE:To find a leak of water quickly and easily, by installing a water leak detector such as a pressure-electric transducer having the water leak detecting function in a water pipe. CONSTITUTION:The watertight structure is given to a water leak detecting part including a pressure-electric transducer 5, and this detecting part is attached to a water pipe semipermanently. The output signal of the transducer 5 is applied to a band pass filter 23 through an amplifying circuit 22, and signal components other than an oscillation frequency due to a leak of wate are cut, and this output signal is inputted to a crest value discriminating circuit 24, and only a signal having a certain magnitude or more is distinguished and is applied together with the output of a clock pulse generating circuit 25 to a discriminating circuit 26. Only when the output of the crest value discriminating circuit 24 is generated continuously for a certain time, the discriminating circuit 26 discriminates a leak of water. The output of the discriminating circuit 26 is stored in a storage circuit 27 and is displayed on a display part 28.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8690681A JPS57201831A (en) | 1981-06-08 | 1981-06-08 | Water leak detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8690681A JPS57201831A (en) | 1981-06-08 | 1981-06-08 | Water leak detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57201831A true JPS57201831A (en) | 1982-12-10 |
Family
ID=13899877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8690681A Pending JPS57201831A (en) | 1981-06-08 | 1981-06-08 | Water leak detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57201831A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59150320A (en) * | 1983-02-04 | 1984-08-28 | Toshiba Corp | Water leak detecting apparatus |
JPS6228633A (en) * | 1985-07-31 | 1987-02-06 | Junkosha Co Ltd | Remote leaking liquid detecting device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5238284A (en) * | 1975-09-22 | 1977-03-24 | Kishikawa Tokushu Valve Seisakusho:Kk | Valve leak detection device |
JPS5315877A (en) * | 1976-07-28 | 1978-02-14 | Toshiba Corp | Leak tester |
-
1981
- 1981-06-08 JP JP8690681A patent/JPS57201831A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5238284A (en) * | 1975-09-22 | 1977-03-24 | Kishikawa Tokushu Valve Seisakusho:Kk | Valve leak detection device |
JPS5315877A (en) * | 1976-07-28 | 1978-02-14 | Toshiba Corp | Leak tester |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59150320A (en) * | 1983-02-04 | 1984-08-28 | Toshiba Corp | Water leak detecting apparatus |
JPS6228633A (en) * | 1985-07-31 | 1987-02-06 | Junkosha Co Ltd | Remote leaking liquid detecting device |
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