The NBS Standard Hygrometer Metadata

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  • Main Title The NBS Standard Hygrometer
  • Added Title National Bureau of Standards Monograph 73
  • Series Title NBS monograph
  • Alternate Title The National Bureau of Standards Standard Hygrometer
  • Series Title National Bureau of Standards Reports


  • Author: Wexler, Arnold
    Creator Type: Personal
  • Author: Hyland, Richard W.
    Creator Type: Personal


  • Originator: United States. Bureau of Standards.
    Contributor Type: Organization
    Contributor Info: United States Department of Commerce, National Bureau of Standards


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


  • Creation: 1964-05-01


  • English


  • Content Description: Report describing a gravimetric hygrometer that serves as the NBS standard instrument for the measurement of the moisture content of gases on an absolute basis in terms of mixing ratio (mass water vapor/ unit mass of dry gas). The National Bureau of Standards and other laboratory reference and working instruments are compared and calibrated with this instrument. The measuring operation involves the absorption of the water vapor from a water vapor-gas mixture by a solid desiccant and the determination of the mass of this water vapor by precision weighing; it also involves the determination of the volume of the associated gas of known density by counting the fillings of two calibrated stainless steel cylinders. The construction and operation of the instrument is described. Discussions of the tests and calibrations of component parts, and of the sources of errors also are included. There is also an analysis of the random and systematic errors effecting the overall accuracy in the determination of mixing ratio.
  • Physical Description: 35 p.


  • Keyword: equations
  • Keyword: calibrations
  • Keyword: scientific instruments

Primary Source

  • Item is a Primary Source


  • Name: Technical Report Archive and Image Library
    Code: TRAIL


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: NBS Monograph 73
  • SuDoc Number: C 13.44:73
  • Archival Resource Key: ark:/67531/metadc70454


  • Display Note: "Issued May 1, 1964."