GB754515A - Improvements in or relating to ionisation manometers - Google Patents
Improvements in or relating to ionisation manometersInfo
- Publication number
- GB754515A GB754515A GB27546/54A GB2754654A GB754515A GB 754515 A GB754515 A GB 754515A GB 27546/54 A GB27546/54 A GB 27546/54A GB 2754654 A GB2754654 A GB 2754654A GB 754515 A GB754515 A GB 754515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- wall
- cylindrical
- poles
- interior
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000012212 insulator Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
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
- H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D7/00—Gas processing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measurement Of Radiation (AREA)
Abstract
754,515. Cold-cathode tubes. SIEMENS & HALSKE AKT.-GES. Sept. 23, 1954 [Sept. 24, 1953], No. 27546/54. Class 39 (1). In an ionization manometer tube having a cold cathode in the form of a metal cylinder, an anode disposed on the axis of said cylinder, and a magnetic circuit the poles of which are coaxial with the cathode and are arranged one at each end of the cathode, the poles of the magnetic circuit are in the form of cylindrical rings housed in the interior of the vacuum space. In the construction shown, the tube comprises an iron vessel having a cylindrical,wall 1 and end covers 2 and 3, each with an axial bore. Permanent magnets 4 and 5, each also having an axial bore, are provided in association with the end covers 2 and 3 which together with the wall 1 complete the magnetic circuit. The cylindrical cathode 6 is mounted between the poles of the magnets 4 and 5 and sleeve members 13 and 14 attached to the end faces 7 and 8 of the cathode extend into the bores in the magnets to assist in confining the discharge to the interior of the cathode. The cathode is insulated from, and centred with respect to, the permanent magnets by mica discs 9 and 10 and is held in position by a spring member 27. A rod anode 11 secured in a cap 21 mounted on a ceramic insulator 22 is partially covered with glass or other insulating material 12 so that the effective anode surface does not extend beyond the cathode 6 and sleeves 13 and 14. To facilitate the evacuation of the interior of the cathode 6 the sleeves 13 and 14 are hollow, holes 15 are provided in the cylindrical wall of the cathode and apertures 16 are provided in the cover part 3. The wall 1 is secured in vacuum-tight fashion to a member 17 which is mounted by means of a rubber packing 18 and a screw cap 19 on a connecting member 20 leading to the receptacle, the pressure in which is to be measured. A conductor 24 leading to the cathode 6 is led through the cover 2 in vacuum-tight fashion at 23 and the tube operating voltage is fed in by a cable 25 led into a closure cap 26 as shown.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE325150X | 1953-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB754515A true GB754515A (en) | 1956-08-08 |
Family
ID=6182610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27546/54A Expired GB754515A (en) | 1953-09-24 | 1954-09-23 | Improvements in or relating to ionisation manometers |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH325150A (en) |
| GB (1) | GB754515A (en) |
| NL (2) | NL98408C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3070283A (en) * | 1959-06-15 | 1962-12-25 | Ultek Corp | Vacuum pump |
| US3243649A (en) * | 1962-08-14 | 1966-03-29 | Gca Corp | Hot filament ionization gauge |
| US3278786A (en) * | 1963-07-16 | 1966-10-11 | Gca Corp | Magnetron type cold cathode ionization gauge having compression mounted cathode |
-
0
- NL NL190943D patent/NL190943A/xx unknown
- NL NL98408D patent/NL98408C/xx active
-
1954
- 1954-09-15 CH CH325150D patent/CH325150A/en unknown
- 1954-09-23 GB GB27546/54A patent/GB754515A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3070283A (en) * | 1959-06-15 | 1962-12-25 | Ultek Corp | Vacuum pump |
| US3243649A (en) * | 1962-08-14 | 1966-03-29 | Gca Corp | Hot filament ionization gauge |
| US3278786A (en) * | 1963-07-16 | 1966-10-11 | Gca Corp | Magnetron type cold cathode ionization gauge having compression mounted cathode |
Also Published As
| Publication number | Publication date |
|---|---|
| NL98408C (en) | |
| CH325150A (en) | 1957-10-31 |
| NL190943A (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB753264A (en) | Improvements relating to ionic vacuum pumps | |
| JPH05264389A (en) | Cold cathode ionization vacuum gauge | |
| GB613423A (en) | Improvements in and relating to magnetrons | |
| GB619323A (en) | Improvements in or relating to electric circuit-breaker structures | |
| GB754515A (en) | Improvements in or relating to ionisation manometers | |
| GB472583A (en) | Improvements in or relating to electron discharge devices | |
| GB1264844A (en) | ||
| GB692232A (en) | Improvements in or relating to electric discharge devices for the measurement of high vacuums | |
| US3244933A (en) | Device of the kind comprising a highpower klystron with getter ion pump connected thereto | |
| GB773253A (en) | Improvements in thyratron structure | |
| US3233169A (en) | Electric discharge vacuum pump having an auxiliary pressure sensor | |
| GB833386A (en) | Improvements in or relating to vacuum electric switches | |
| GB1238515A (en) | ||
| GB571709A (en) | Improvements in or relating to thermionic devices | |
| GB779347A (en) | Improvements in or relating to etching metals | |
| US2366258A (en) | Bushing insulator | |
| US3555411A (en) | Cold cathode magnetron ionization gauge with cathodes forming pole pieces for cylindrical magnet | |
| GB653899A (en) | Improvements in or relating to vapour electric devices | |
| US2714166A (en) | Calutron structure | |
| US2459791A (en) | Vacuum tube | |
| US3032675A (en) | Magnetron tube | |
| GB780828A (en) | Improvements in or relating to electric glow discharge apparatus for measuring low gas-pressures | |
| SU605137A1 (en) | Magnetic-electric discharge pressure gauge | |
| GB893309A (en) | Improvements in or relating to trochotron tubes | |
| GB713157A (en) | Improvements in anode structures |