Vibration-type density meter

Details Vibration-type density meter Vibration-type density meter

G - Physics

01

N

349/37

G01N 9/10 (2006.01) G01N 9/00 (2006.01)

Patent

CA 1175544

ABSTRACT OF THE DISCLOSURE A vibration-type density meter includes a mechanical oscillator or resonator having a resonance frequency variable with the density of a specimen fluid around the oscillator. The resonator is of a cylindrical configuration having flanges at ends thereof, at least one of the ends being open to introduce the specimen fluid into the resonator. The density meter also includes a PZT element for exciting the cylindrical resonator, a PZT element for detecting oscillations of the cylindrical resonator, a cover coupled to the flanges of the cylindrical resonator in surrounding relation to the latter, and a circuit for processing a frequency signal delivered from the oscillation detector in an arithmetic operation to derive and display the density of the specimen fluid being measured.

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