Method and apparatus for measuring grammage

Details Method and apparatus for measuring grammage Method and apparatus for measuring grammage

G - Physics

01

G

G01G 9/00 (2006.01) G01B 15/02 (2006.01) G01G 11/04 (2006.01) G01N 22/04 (2006.01)

Patent

CA 2550164

A grammage measuring apparatus includes a dielectric resonator which is arranged only at one surface side of a sample; a shielding container with which the dielectric resonator is substantially covered except for a sample measuring surface; a microwave excitation device which causes the dielectric resonator to generate an electric field vector, a detection device which detects transmission energy or reflection energy by the dielectric resonator, a storage device in which a calibration curve indicating a resonance frequency shift amount for a grammage is stored; and a data processing device which calculates the grammage of a measuring sample from the calibration curve and measurement result of the resonance frequency shift amount of the measuring sample.

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