AN IN-LINE DENSITY AND VISCOSITY SENSOR

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

• TRT Terms: Calibration; Capillarity; Densitometers; Density; Detectors; Flow; Flowmeters; Handbooks; Instruments for measuring loads or pressure; Liquids; Measurement; Performance; Pressure; Theory; Tubing; Utilization; Viscometers; Viscosity
• Old TRIS Terms: Capillary tubes; Density mass/volume; Liquid flow; Pressure measurement
• Subject Areas: Research;

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