AN IMPROVED HIGH-PRECISION CALIBRATION PROCEDURE FOR REFERENCE STANDARD HYDROMETERS

A METHOD IS DESCRIBED OF CALIBRATING HYDROMETERS WHICH, ALTHOUGH NO MORE ACCURATE THAN THE TECHNIQUE USED HERETOFORE AT THE NATIONAL BUREAU OF STANDARDS, REDUCES CALIBRATION TIME FROM SEVERAL DAYS TO A FEW HOURS. THE PROCEDURE IS BASED UPON EASILY MEASURED HYDROMETER WEIGHT, STEM SCALE GEOMETRY, AND FLOTATION LEVEL MEASUREMENTS AT ONLY ONE LIQUID DENSITY. THE RELIABILITY OF THIS SINGLE LEVEL IS IMPROVED BY OBSERVING THE HYDROMETER FLOTATION UNDER VARIOUS WEIGHT LOADS. THE CALIBRATION EXPERIMENT IS ORIENTED TOWARD AUTOMATIC DATA REDUCTION SO THE FINISHED CALIBRATION REPORT IS OF MUCH WIDER APPLICABILITY THAN THE SIMPLE CORRECTION TABLE DERIVED FROM THE OLDER EXPERIMENT. /AUTHOR/

  • Supplemental Notes:
    • Vol 73c, No 3 & 4, PP 57-65, 5 FIG, 1 TAB, 2 REF, 1 APP
  • Authors:
    • Bowman, H A
    • Gallagher, W H
  • Publication Date: 0

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Filing Info

  • Accession Number: 00229766
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 4 1970 12:00AM