Patent ID: 7755368
Filing Date: 2010-07-13
Classification: G01N

Abstract:
1. Method for measuring the mass and/or moisture of the contents of incompletely filled capsules having a longitudinal extent and containing products, with the aid of microwaves, in which method the displacement of the resonant frequency and broadening of the resonance curve caused by the capsules in at least two resonators is determined and evaluated, a first resonator with a first measuring field which is homogeneous over the capsule dimensions being used to determine the total mass/moisture of the capsule and contents, wherein the contents of the capsule are transported to one side of the capsule cavity by acceleration or gravity, and in that a second resonator with a second measuring field with a local resolution less than the longitudinal extent of the capsules is used to determine location-dependent profiles of mass/moisture values while each capsule is moving through said second measuring field, the displacement of the resonant frequency and broadening of the resonance curve of the first and second resonators are combined to determine the mass and/or moisture of the contents of the capsules.