Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Detection Of Improper Mounting From The Sensor Signal Of Vortex Owmeters
Author: A. G. Rossberg, P. Riegler, F. Buhl, J. Herwig, J. Timmer
Source: Flomeko 2003
Year Published: 2003
Abstract: In vortex owmeters, the frequency of vortex formation at a blu body inserted into the ow is used to determine the ow velocity. The frequency is determined using a sensor that measures the time-dependent distortions of the down-stream ow eld. But the (univariate) sensor signal contains more information than just the vortex frequency. We use this inherent extra information to verify if the pipe ow has the form expected for the correct mounting of the owmeter, and thus, if the ow measurement has the expected high accuracy. In designing the method, special care was taken to leave it robust with respect to uncertainties in the material properties of the uid. In order to achieve this goal, the method makes use of the scaling properties of the Navier-Stokes equation. We present the theoretical background of the proposed diagnostic functionality and verify it on measurement data. In the experiments, irregularities that lead to more than 0.5% error in the output of the owmeter can clearly be detected.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.