JPS5542069A - Buried metal pipe detector - Google Patents
Buried metal pipe detectorInfo
- Publication number
- JPS5542069A JPS5542069A JP11613478A JP11613478A JPS5542069A JP S5542069 A JPS5542069 A JP S5542069A JP 11613478 A JP11613478 A JP 11613478A JP 11613478 A JP11613478 A JP 11613478A JP S5542069 A JPS5542069 A JP S5542069A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- metal pipe
- coil
- frequency
- buried metal
- 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
Abstract
PURPOSE: To detect only a metal pipe or band of about 20cm or less in length, by integrally securing the oscillation coil of an oscillator and the reception coil of a receiver at a prescribed distance and an angle of 90° to stop resonance.
CONSTITUTION: The oscillation coil 5 and a high-frequency amplifier 4 are combined with each other to cause oscillation with an optional frequency of 200W 500kHz and an appropriate output to carry a modulated wave 3. The electric wave of the oscillation is received by the reception coil 6 at the prescribed distance. Tuning is performed at said frequency. Amplification and detection 8 are effected. The modulated wave is amplified at 9. The presence or absence of the metal piece is detected through sound vibration 10 or a meter pointer 11.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11613478A JPS5542069A (en) | 1978-09-21 | 1978-09-21 | Buried metal pipe detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11613478A JPS5542069A (en) | 1978-09-21 | 1978-09-21 | Buried metal pipe detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5542069A true JPS5542069A (en) | 1980-03-25 |
Family
ID=14679558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11613478A Pending JPS5542069A (en) | 1978-09-21 | 1978-09-21 | Buried metal pipe detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5542069A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4658054A (en) * | 1985-07-29 | 1987-04-14 | Ortho Pharmaceutical Corporation | Process for the preparation of 5,6-dialkoxyanthranilic acids |
-
1978
- 1978-09-21 JP JP11613478A patent/JPS5542069A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4658054A (en) * | 1985-07-29 | 1987-04-14 | Ortho Pharmaceutical Corporation | Process for the preparation of 5,6-dialkoxyanthranilic acids |
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