GB843060A - Improvements in vacuum leak detection - Google Patents
Improvements in vacuum leak detectionInfo
- Publication number
- GB843060A GB843060A GB17518/58A GB1751858A GB843060A GB 843060 A GB843060 A GB 843060A GB 17518/58 A GB17518/58 A GB 17518/58A GB 1751858 A GB1751858 A GB 1751858A GB 843060 A GB843060 A GB 843060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- admitted
- june
- chamber
- vacuum
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
843,060. Detecting leaks in vacuum systems. GENERAL ELECTRIC CO. June 2, 1958 [June 5, 1957], No. 17518/58. Class 37. In a vacuum system, leaks are detected by observing the current passing through a discharge device communicating with the system and comprising a heated anode 14. Such current is markedly increased on the entry through any leak of dichlorodifluoromethane or other halogencontaining gas. To improve the steadiness of the meter a small amount of air is admitted to the vacuum system. To prevent a gradual loss of sensitivity, the pressure is kept above one micron but less than 200 microns. As shown a chamber is evacuated by mechanical pumps 5 and then by diffusion pumps 3 and air is admitted at 23. In a modification, Fig. 2 (not shown), separate valves with filters are provided for the admission of air to the chamber and to the discharge tube. Specifications 648,367 and 842,897 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US843060XA | 1957-06-05 | 1957-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB843060A true GB843060A (en) | 1960-08-04 |
Family
ID=22184112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17518/58A Expired GB843060A (en) | 1957-06-05 | 1958-06-02 | Improvements in vacuum leak detection |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB843060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957517A (en) * | 2021-09-17 | 2022-01-21 | 魏波 | Single crystal growing furnace vacuum detection system |
-
1958
- 1958-06-02 GB GB17518/58A patent/GB843060A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957517A (en) * | 2021-09-17 | 2022-01-21 | 魏波 | Single crystal growing furnace vacuum detection system |
| CN113957517B (en) * | 2021-09-17 | 2023-12-26 | 内蒙古晶祥工贸有限公司 | Single crystal furnace vacuum detection system |
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