Patent ID: 7328112

Claim:
A method of operating a magneto-inductive flow meter, comprising the steps of: registering measurement signal values as a function of time; filtering said measurement signal values with a damping constant D 1 ; averaging said measurement signal values with respect to time; determining fluctuations of said measurement signal values with respect to time; determining, for a medium being measured, a typical fluctuation interval, in which a majority of said measurement signal values lies; testing a condition B, whether, in a predetermined interval of time, a number A 1 of said measurement signal values lie above an upper limit value of the fluctuation interval and a number A 2 of said measurement signal values lie below a lower limit value of the fluctuation interval; and when the condition B is fulfilled switching from the damping constant D 1 to a damping constant D 2 , wherein the damping constant D 2 effects a higher damping for filtering of said measurement signal values.