GB1219044A - Improvements in and relating to ionisation manometers - Google Patents
Improvements in and relating to ionisation manometersInfo
- Publication number
- GB1219044A GB1219044A GB49321/69A GB4932169A GB1219044A GB 1219044 A GB1219044 A GB 1219044A GB 49321/69 A GB49321/69 A GB 49321/69A GB 4932169 A GB4932169 A GB 4932169A GB 1219044 A GB1219044 A GB 1219044A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supported
- manometers
- oct
- spacing
- electrode
- 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
- H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
1,219,044. Ionization manometers. BALZERS PATENTUND BETEILIGUNGS A.G. 7 Oct., 1969 [15 Oct., 1968], No. 49321/69. Heading H1D. In a triode ionization manometer tube comprising an ion collecting electrode 4 located between a thermionic cathode 1 and an electron accelerating electrode 6, the spacing and dimensions of said three electrodes are such that the inter-electrode capacitance ratio C 6-1 /C 4-1 is from 0À25 to 1À00. The cathode 1 is supported by current leads 2 and 3 at a spacing of 4 mm. from ion collector 4 which comprises from three to five rods (four as shown) supported by a plate 5. Anode 6 is a cylinder having an internal diameter of 8 to 16 mm. and a length of 25 mm. supported by a rod 7. The tube which has a linear measuring characteristic for pressures up to several torr. is connected in a circuit (Fig. 2, not shown) which may include means for stabilizing the electron emission current.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1550368A CH477684A (en) | 1968-10-15 | 1968-10-15 | Ionization manometer tube |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1219044A true GB1219044A (en) | 1971-01-13 |
Family
ID=4409603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB49321/69A Expired GB1219044A (en) | 1968-10-15 | 1969-10-07 | Improvements in and relating to ionisation manometers |
Country Status (6)
Country | Link |
---|---|
US (1) | US3760212A (en) |
CH (1) | CH477684A (en) |
DE (1) | DE1934940B2 (en) |
FR (1) | FR2020747A1 (en) |
GB (1) | GB1219044A (en) |
NL (1) | NL160430C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4047101A (en) * | 1976-01-08 | 1977-09-06 | Westinghouse Electric Corporation | Filament for alkali metal ionization detector |
US4095171A (en) * | 1976-04-07 | 1978-06-13 | Westinghouse Electric Corp. | Alkali metal ionization detector |
DE3628847C2 (en) * | 1986-08-25 | 1995-12-14 | Max Planck Gesellschaft | Hot cathode ionization manometer |
US6025723A (en) * | 1997-08-27 | 2000-02-15 | Granville-Phillips Company | Miniature ionization gauge utilizing multiple ion collectors |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2497213A (en) * | 1945-05-22 | 1950-02-14 | Nat Res Corp | Pressure gauge |
NL92807C (en) * | 1953-06-15 | |||
US3067346A (en) * | 1959-12-07 | 1962-12-04 | Sylvania Electric Prod | Ionization vacuum gauge |
US3353048A (en) * | 1964-11-23 | 1967-11-14 | Gen Telephone & Elect | Ionization gauge for monitoring the flow of evaporant material |
-
1968
- 1968-10-15 CH CH1550368A patent/CH477684A/en not_active IP Right Cessation
-
1969
- 1969-01-07 NL NL6900231.A patent/NL160430C/en not_active IP Right Cessation
- 1969-07-10 DE DE19691934940 patent/DE1934940B2/en active Pending
- 1969-10-07 GB GB49321/69A patent/GB1219044A/en not_active Expired
- 1969-10-15 FR FR6935238A patent/FR2020747A1/fr not_active Withdrawn
-
1971
- 1971-10-26 US US00192633A patent/US3760212A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CH477684A (en) | 1969-08-31 |
FR2020747A1 (en) | 1970-07-17 |
NL160430B (en) | 1979-05-15 |
DE1934940A1 (en) | 1970-04-30 |
US3760212A (en) | 1973-09-18 |
NL160430C (en) | 1979-10-15 |
NL6900231A (en) | 1970-04-17 |
DE1934940B2 (en) | 1971-06-03 |
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