Volumetric system to measure the flow rate of a fluid.

摘要

The invention relates to a volumetric system to measure the flow rate of a fluid, in particular for hydrocarbon distributors. The measuring system comprises, in addition to the volumetric meter (14) proper, a system (18) to correct load losses of the meter. The correcting system comprises a differential pressure sensor (38) subjected to the difference between the pressures at the intake (32) and the outlet (34) of the meter. The displacement of the diaphragm (40, 42) allows the coupling via the plates (56, 61) of an external motor (36) to the shaft (24) of the meter. <IMAGE>