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Gauge Calibrations with Different Gases

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Description

(1) Gauge Calibrations with Different Gases. A Veeco RG-75 gauge was calibrated for hydrogen, helium, argon, and nitrogen; and for air of three different degrees humidity. Values of over-all averages, together with related derived quantities are summarized in Table 1. (2) Effect of Humidity of a Calibrating Gas. Whenever air is used in making gauge calibrations it is common practice to specify that the humidity for the air used should not exceed some arbitrary, low value. Under the conditions of the tests, (RG-75 gauges no refrigerated traps), changes in humidity of the calibrating gas have no detectable effect on the … continued below

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7 pages : illustrations

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Normand, C. E. January 5, 1962.

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(1) Gauge Calibrations with Different Gases. A Veeco RG-75 gauge was calibrated for hydrogen, helium, argon, and nitrogen; and for air of three different degrees humidity. Values of over-all averages, together with related derived quantities are summarized in Table 1. (2) Effect of Humidity of a Calibrating Gas. Whenever air is used in making gauge calibrations it is common practice to specify that the humidity for the air used should not exceed some arbitrary, low value. Under the conditions of the tests, (RG-75 gauges no refrigerated traps), changes in humidity of the calibrating gas have no detectable effect on the sensitivity of the gauges, nor on measured pumping speed.

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7 pages : illustrations

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Digitized from microopaque cards (1).

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  • Report No.: CF-61-5-109 (Suppl. 3)
  • SuDoc Number: Y 3.At 7:22/CF-61-5-109 (Suppl. 3)
  • Accession or Local Control No: metadc1241229
  • Archival Resource Key: ark:/67531/metadc1241229

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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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  • January 5, 1962

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  • July 9, 2023, 5:54 p.m.

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  • Dec. 23, 2025, 11:05 a.m.

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Normand, C. E. Gauge Calibrations with Different Gases, report, January 5, 1962; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1241229/: accessed May 21, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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