GB1219044A - Improvements in and relating to ionisation manometers - Google Patents

Improvements in and relating to ionisation manometers

Info

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
Application number
GB49321/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balzers Patent und Beteiligungs AG
Original Assignee
Balzers Patent und Beteiligungs AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Balzers Patent und Beteiligungs AG filed Critical Balzers Patent und Beteiligungs AG
Publication of GB1219044A publication Critical patent/GB1219044A/en
Expired legal-status Critical Current

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.
GB49321/69A 1968-10-15 1969-10-07 Improvements in and relating to ionisation manometers Expired GB1219044A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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