Method for calibrating a flowmeter with oval wheels and compensated flowmeter thus obtained

摘要

The invention relates to a method for calibrating a flowmeter with oval wheels and compensated flowmeter thus obtained. The flowmeter is supplied with a sample of fluid of reference volume Vo greater than the elementary volume of the chamber or slightly greater than an integer multiple k of the volume of the latter, Vo = kVc + epsilon . epsilon being a volume equal to a few percent of the volume Vc. The number of pulses counted during the transit of the sample of volume Vo is counted and corrected in order to define a corrected number Nc satisfying the relationship Nc x Vct = Vo where Vct is the nominal theoretical volume of the chamber. Application to calibrating and producing a compensated differential flowmeter. <IMAGE>