METHOD AND DEVICE FOR MEASURING AND CONTROLLING THE DOSAGE OF SMALL QUANTITIES OF FLUID BY MEANS OF A RESONATING NEEDLE, AND RESONATING NEEDLE SUITABLE FOR THIS PURPOSE

摘要

A resonating needle which is adapted to be used in a device for measuring and controlling the dosage of a small quantity of fluid, includes: a needle (1) adapted to contain the small quantity of fluid; a resonating element of the piezoelectric type (2), coupled to the needle and adapted to be energized in order to detect variations of oscillation parameters of the needle and of the resonating element for the purpose of determining the dosage measurement and control.