Detecting abnormal metrological drift in a fluid meter

A monitoring method for monitoring a measuring device of a fluid meter that is arranged to produce measurements of the overall consumption of an installation, the method comprising the steps of:

• analyzing the overall consumption measurements to identify a mechanism in the installation that operates with operating cycles, each presenting a substantially constant cycle duration (t1−t0) and during each of which the individual consumption (V1−V0) of the mechanism is substantially constant;
• detecting the operating cycles of the mechanism and measuring the individual consumption of the mechanism for each detected operating cycle;
• detecting abnormal metrological drift of the measuring device of the fluid meter as a function of variation over time in the individual consumption of the mechanism.