Abb Patent Gmbh

Axel Rossberg

Frank Buhl

Jorg Herwig

Jens Timmer

Peter Riegler

Rene Friedrichs

Kilian Bartholome

Axel Papenbrock

The invention relates to a method for monitoring a measurement device, in particular a flow measurement device, and to a measurement device itself. In order in this case to reliably preclude measurement errors resulting from incorrect installation, the invention proposes that a characteristic variable is calculated from a time series s(t) of the measurement signal of a measurement device and is compared with previously recorded reference values, with this being used as the basis to automatically generate a message as to whether the measurement device has been installed correctly or incorrectly.

Method for monitoring the installation of a measurement device

A measuring instrument whose measuring principle is based on an oscillator, for example an eddy counter, and in which there is arranged a sensor for recording a measured signal (S(t)), which can be supplied to an evaluation unit (), characterized in that, from the phase increments psi(tau,t), that is to say from the differences between the instantaneous values phi(t) of the phase signal derived from the measured signal S(t) in a phase extractor () and values phi(t-tau) time-delayed by a delayed time tau, a coupling indicator value (KI) is formed in such a way that the existence of phase coupling with a further oscillator can be detected on the latter by means of comparison with a coupling reference value (KR).

Measuring instrument and method of measuring flows

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Freiburg, Germany

Axel Rossberg