IMPROVED TURBINE METER ACCURACY BY UTILIZATION OF DIMENSIONLESS DATA

摘要

The present industry accepted method of utilization of turbine flow meters for flow measurement of fluids with a wide viscosity range is not as accurate as presently believed. The Universal Viscosity Curve, UVC, is not a true representation of the actual flow through the turbine meter. Therefore, it is imperative that truly dimensionless data be utilized to more accurately measure the flow of this viscous fluid. By reducing the data to Strouhal and Roshko numbers, in lieu of K-factor and Frequency/Viscosity, errors can and must be eliminated. This approach was originally proposed by Dr. George E. Mattingly of NIST, and has been validated by the utilization of actual calibration data. This paper will present the validity of the dimensionless data approach.