GB988514A - Improvements in or relating to vacuum meters - Google Patents
Improvements in or relating to vacuum metersInfo
- Publication number
- GB988514A GB988514A GB2843461A GB2843461A GB988514A GB 988514 A GB988514 A GB 988514A GB 2843461 A GB2843461 A GB 2843461A GB 2843461 A GB2843461 A GB 2843461A GB 988514 A GB988514 A GB 988514A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- indicator
- aug
- vacuum
- gauge
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
988,514. Determining pressure. W.C. HERAEUS G.m.b.H. Aug. 4, 1961 [Aug. 6, 1960], No. 28434/61. Drawings to Specification. Heading G1N. A vacuum gauge which may use an ionisation measuring head is arranged to indicate on a linear scale, a log arithmic scale, or both, by providing amplifier means which may be switched to give either a linear or logarithmic output. The amplifier means may comprise a pair of separate amplifiers,the inputs or outputs of which may be selectively coupled to the gauge or the indicator respectively. A permanent connection between either amplifier and one indicator may be provided together with a switch operable to connect the same amplifier or the other amplifier to a second indicator simultaneously. Pen recorders may be provided. The Specification refers to the vacuum degasification of steel,and to the vapour deposition of coatings and there is a reference to process regulation and control.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH0040144 | 1960-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB988514A true GB988514A (en) | 1965-04-07 |
Family
ID=7154161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2843461A Expired GB988514A (en) | 1960-08-06 | 1961-08-04 | Improvements in or relating to vacuum meters |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH391325A (en) |
GB (1) | GB988514A (en) |
-
1961
- 1961-06-22 CH CH732161A patent/CH391325A/en unknown
- 1961-08-04 GB GB2843461A patent/GB988514A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH391325A (en) | 1965-04-30 |
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