JPS578428A - Measuring device for degree of vacuum - Google Patents
Measuring device for degree of vacuumInfo
- Publication number
- JPS578428A JPS578428A JP8443980A JP8443980A JPS578428A JP S578428 A JPS578428 A JP S578428A JP 8443980 A JP8443980 A JP 8443980A JP 8443980 A JP8443980 A JP 8443980A JP S578428 A JPS578428 A JP S578428A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- valve
- port
- gage
- degree
- 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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
Abstract
PURPOSE:To maintain the accuracy of measurement and save the labor for disassembling by rushing air into a vacuum device through a small sized air lead-in tube provided near the gage port of a gage mounting and connecting pipe connected to a vacuum valve communicating with said vacuum device thereby maintaining a gage terminal clean. CONSTITUTION:A vacuum device 1 is connected to a gage port 9 through a conduit 2 for measuring the degree of vacuum, a vacuum valve 3 and a pipe 4 for connecting a gage. A terminal 10 for measuring the degree of vacuum is provided in the port 9. A nozzle 8 having ejector effect is provided near the port 9, and rush-in of air is made possible by a small sized air lead-in valve 7. At the time of putting the inside of the device 1 under atmospheric pressure, the valve 7 is opened for a short time prior to opening of a large sized air lead-in valve 12 to allow air to rush in through the nozzle 8, thereby blowing the dust stuck and accumulated near the port 9 toward the device 1 and cleaning the same. After this, the valve 3 is closed and the valve 12 is opened. Thereby, the accuracy of measurement is maintained without disassembling and cleaning the device every time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8443980A JPS578428A (en) | 1980-06-19 | 1980-06-19 | Measuring device for degree of vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8443980A JPS578428A (en) | 1980-06-19 | 1980-06-19 | Measuring device for degree of vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS578428A true JPS578428A (en) | 1982-01-16 |
Family
ID=13830616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8443980A Pending JPS578428A (en) | 1980-06-19 | 1980-06-19 | Measuring device for degree of vacuum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS578428A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618687A (en) * | 1984-06-22 | 1986-01-16 | Marine Instr Co Ltd | Image display method of scanning sonar |
| CN106289635A (en) * | 2016-07-28 | 2017-01-04 | 山西太钢不锈钢股份有限公司 | A kind of steam turbine vacuum measurement apparatus |
| DE102016214920A1 (en) | 2015-09-04 | 2017-03-09 | Toyota Jidosha Kabushiki Kaisha | Vehicle liftgate structure |
-
1980
- 1980-06-19 JP JP8443980A patent/JPS578428A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618687A (en) * | 1984-06-22 | 1986-01-16 | Marine Instr Co Ltd | Image display method of scanning sonar |
| JPH0317310B2 (en) * | 1984-06-22 | 1991-03-07 | Kaijo Denki Kk | |
| DE102016214920A1 (en) | 2015-09-04 | 2017-03-09 | Toyota Jidosha Kabushiki Kaisha | Vehicle liftgate structure |
| CN106289635A (en) * | 2016-07-28 | 2017-01-04 | 山西太钢不锈钢股份有限公司 | A kind of steam turbine vacuum measurement apparatus |
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