GB1456825A - Vacuum gauge - Google Patents

Vacuum gauge

Info

Publication number
GB1456825A
GB1456825A GB5275873A GB5275873A GB1456825A GB 1456825 A GB1456825 A GB 1456825A GB 5275873 A GB5275873 A GB 5275873A GB 5275873 A GB5275873 A GB 5275873A GB 1456825 A GB1456825 A GB 1456825A
Authority
GB
United Kingdom
Prior art keywords
anode
shield
cathode
annulus
ring
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
GB5275873A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB5275873A priority Critical patent/GB1456825A/en
Publication of GB1456825A publication Critical patent/GB1456825A/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
    • H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

1456825 Ionization manometers P SADLER 12 Feb 1975 [14 Nov 1973] 52758/73 Heading H1D A cold cathode ionization vacuum gauge comprises a loop anode 20 detachably mounted on a metal voltage stress shield 25. A tube 11, originally cylindrical, is flattened to provide two facing cold-cathode areas 13, one on each side of the Cr-Ni-Nb loop 20 sprung by its inturned ends into slots 23 and recesses 21 in stainless steel (high work function material) shield 25, itself attached by insulator 17 to annulus 16. For cleaning or replacement of anode 20 annulus 16 complete with shield and anode may be removed by unclamping 0-ring 15 by releasing locking ring 19, also allowing the cathode areas 13 to be cleaned by abrasion. Ring magnet 12 maintains a field perpendicular to cathode areas 13.
GB5275873A 1973-11-14 1973-11-14 Vacuum gauge Expired GB1456825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5275873A GB1456825A (en) 1973-11-14 1973-11-14 Vacuum gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5275873A GB1456825A (en) 1973-11-14 1973-11-14 Vacuum gauge

Publications (1)

Publication Number Publication Date
GB1456825A true GB1456825A (en) 1976-11-24

Family

ID=10465179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5275873A Expired GB1456825A (en) 1973-11-14 1973-11-14 Vacuum gauge

Country Status (1)

Country Link
GB (1) GB1456825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431233A1 (en) * 1989-12-08 1991-06-12 Balzer, Dinoo, Dr. Partial pressure gauge using a cold-cathode ion source for leak detection in vacuum systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431233A1 (en) * 1989-12-08 1991-06-12 Balzer, Dinoo, Dr. Partial pressure gauge using a cold-cathode ion source for leak detection in vacuum systems
WO1991009413A1 (en) * 1989-12-08 1991-06-27 Richard Balzer Partial pressure measuring cell with cold-cathode ion source for leak detection in vacuum systems

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee