Calibration of Nude Ionization Gauges : Supplement No. 2 to ORNL-CF 61-5-109

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Description

Whenever an ionization gauge without envelope (nude-type) is used on the same system with a conventional (tabulated) gauge different pressures are usually indicated by the type type of gauges. Three different models of nude Byart-Alpert type gauges have investigated: (1) Vactronic-N.I.G. (two), (2) Veeco RG-75 (denuded) and (3) Hughes-6578. Parallel calibrations of tublated RG075 gauges ere made in each case. Nude ionization gauges, when operated continuously for long periods of time in our test system show errors of two types (1) Sensitivity error. Sensitivity decreases with time in service. (2) Additive Error. There is an additive difference between treading of … continued below

Physical Description

16 pages : illustrations

Creation Information

Normand, C. E. November 24, 1961.

Context

This report is part of the collection entitled: TRAIL Microcard Collection and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Author

Normand, C. E.

Originator

Oak Ridge National Laboratory

Union Carbide Corporation Operated by
U.S. Atomic Energy Commission

Publisher

United States. Government Printing Office.
Place of Publication: Washington D.C.

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Titles

Main Title: Calibration of Nude Ionization Gauges : Supplement No. 2 to ORNL-CF 61-5-109
Series Title: CF (Series)
Series Title: Oak Ridge National Laboratory Reports
Added Title: Oak Ridge National Laboratory Report CF-61-5-109 (Suppl. 2)

Description

Whenever an ionization gauge without envelope (nude-type) is used on the same system with a conventional (tabulated) gauge different pressures are usually indicated by the type type of gauges. Three different models of nude Byart-Alpert type gauges have investigated: (1) Vactronic-N.I.G. (two), (2) Veeco RG-75 (denuded) and (3) Hughes-6578. Parallel calibrations of tublated RG075 gauges ere made in each case. Nude ionization gauges, when operated continuously for long periods of time in our test system show errors of two types (1) Sensitivity error. Sensitivity decreases with time in service. (2) Additive Error. There is an additive difference between treading of nude and tublated gauges on the same system. Gauges have a large (and growing) sensitivity error are not believable. Even gauges which are free of sensitivity error are suspect when reading low pressures, because of the ever present additive error.

Physical Description

16 pages : illustrations

Notes

Digitized from microopaque cards (1).

Subjects

Library of Congress Genre/Form Terms

Technical reports

Library of Congress Subject Headings

Language

English

Item Type

Report

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

Report No.: CF-61-5-109 (Suppl. 2)
SuDoc Number: Y 3.At 7:22/CF-61-5-109 (Suppl. 2)
Accession or Local Control No: metadc1241228
Archival Resource Key: ark:/67531/metadc1241228

Collections

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TRAIL Microcard Collection

Imaged from microcard, these technical reports describe research performed for U.S. government agencies from the 1930s to the 1960s. The reports were provided by the Technical Report Archive and Image Library (TRAIL).

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Creation Date

November 24, 1961

Added to The UNT Digital Library

July 9, 2023, 5:54 p.m.

Description Last Updated

Dec. 23, 2025, 10:47 a.m.

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Place Name

United States

Publication Place

Washington D.C. (United States. Government Printing Office.)

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Normand, C. E. Calibration of Nude Ionization Gauges : Supplement No. 2 to ORNL-CF 61-5-109, report, November 24, 1961; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1241228/: accessed February 16, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.