JPS5562338A - Pinhole detector for sealed packing - Google Patents
Pinhole detector for sealed packingInfo
- Publication number
- JPS5562338A JPS5562338A JP13535378A JP13535378A JPS5562338A JP S5562338 A JPS5562338 A JP S5562338A JP 13535378 A JP13535378 A JP 13535378A JP 13535378 A JP13535378 A JP 13535378A JP S5562338 A JPS5562338 A JP S5562338A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- room
- air
- packaged article
- pinholes
- 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
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE: To realize a direct detection for the pinholes of the packaged article by giving a comparison between the refractive index of the air and the gas leaked out of the packaged article installed in the vacuum box.
CONSTITUTION: Packaged article 2 is stored into vacuum box 1 with airtightness secured via packing 3, and then the decompression is given via vacuum pump 6a. As a result, the inorganic gas leaks out of article 2 containing the pinholes, if any. Then the air containing the gas is led into gas room 8 within interference gauge type gas refraction meter 7. After stopping the decompression, an equal pressure level is secured between room 8 and air room 9 by pump 6b and via vacuum gauges 5a and 5b. Then the beat pattern caused by the difference of the refractive index between rooms 8 and 9 is detected at light reception part 11 via the light of light source 10 and reflector plate 12. And the shift of the beat pattern is converted into the electric signals to be then delivered in the form of the signal alarming the existence of the pinhole.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13535378A JPS5562338A (en) | 1978-11-01 | 1978-11-01 | Pinhole detector for sealed packing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13535378A JPS5562338A (en) | 1978-11-01 | 1978-11-01 | Pinhole detector for sealed packing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5562338A true JPS5562338A (en) | 1980-05-10 |
Family
ID=15149763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13535378A Pending JPS5562338A (en) | 1978-11-01 | 1978-11-01 | Pinhole detector for sealed packing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5562338A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091114A (en) * | 1959-12-17 | 1963-05-28 | Air Reduction | Method and apparatus for testing sealed packages for leaks |
-
1978
- 1978-11-01 JP JP13535378A patent/JPS5562338A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091114A (en) * | 1959-12-17 | 1963-05-28 | Air Reduction | Method and apparatus for testing sealed packages for leaks |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3548657A (en) | Device for an outside display of the level of a liquid contained within a tank | |
SE7710316L (en) | VACUUM CLEANER INDICATOR DEVICE | |
GB1178200A (en) | Fluid Actuated Visual Indicator | |
JPS5562338A (en) | Pinhole detector for sealed packing | |
JPS5432343A (en) | Light reflecting object detector | |
JPS5563732A (en) | Leakage measuring device | |
GB2016697A (en) | Pressure Gauges | |
IT1246572B (en) | PROCEDURE AND APPARATUS FOR ABSOLUTE INTERFEROMETRIC MEASUREMENTS OF PHYSICAL SIZES. | |
JPS5458053A (en) | Optical detector for liquid level | |
JPS5593038A (en) | Automatic detecting sorter for pinhole | |
JPS51134680A (en) | Pipe leak detector | |
JPS5484791A (en) | Leakage detector of sealed cans | |
SU922563A2 (en) | Device for checking article fluid tightness | |
JPS5238955A (en) | Measuring device of gas leakage | |
JPS5484792A (en) | Leakage detector of sealed cans | |
SU832383A1 (en) | Device for fluid-tightness testing of hollw articles | |
JPS56130609A (en) | Measuring device with function to convert absolute value | |
JPS5717833A (en) | Leakage inspection device for sealed goods | |
JPS6454325A (en) | Measuring method for gas sealing pressure of accumulator | |
ES218157U (en) | Leak detector device in containers. (Machine-translation by Google Translate, not legally binding) | |
JPS6484896A (en) | Leakage oil detector for underground tank | |
DE59408093D1 (en) | LEAK DETECTING SYSTEM | |
JPS5328462A (en) | Differential pressure ty pe liquid level gauge | |
JPS524252A (en) | Home position detector unit | |
JPS5485360A (en) | Detector for defective part of gas-insulated apparatus |