In-line density and viscosity sensors for liquids are developed to utilize measurements of differential pressure across a nozzle and a coiled capillary tube respectively, with known flowrates through each provided by a flow generator. Theory and principles of operation and instructions for calibration and use of the sensors are discussed, along with design consideration for the sensors and associated equipment. A calibration of the sensors demonstrated that viscosity and density each could be measured with a computed standard deviation of one percent. Viscosity was varied over the range of about 1 to 11 centistokes whereas density of the fluids used was near 0.8 g per cc. Application of similarity considerations is used to make the results applicable to other liquid densities.

  • Supplemental Notes:
    • Sponsored in part by Department of Defense Calibration Coordination Group, Pomona, Calif.
  • Corporate Authors:

    National Bureau of Standards

    Fluid Meters Section
    Washington, DC  United States  20234

    Department of Defense

    Calibration Coordination Group
    Pomona, CA  United States 
  • Authors:
    • Olsen, L O
    • Ruegg, F W
  • Publication Date: 1974-11

Media Info

  • Pagination: 21 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00093500
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NBSIR-74-620 Final Rpt.
  • Files: NTIS
  • Created Date: Jan 14 1976 12:00AM