FREQUENCY MEASURING APPARATUS

Brand	Owner (click to sort)	Address	Description
MAGMETER	NORTH AMERICAN PHILIPS CORPORATION	New York NY	FREQUENCY MEASURING APPARATUS, INSTANTANEOUS FREQUENCY DETECTORS, MAGNETIC FREQUENCY DETECTORS, FREQUENCY RECORDER DRIVERS, AND AUDIO FREQUENCY DETECTORS;
MAGMETER	AIRPAX PRODUCTS COMPANY	3026 EASTERN BLVD. MIDDLE RIVER MD	FREQUENCY MEASURING APPARATUS, INSTANTANEOUS FREQUENCY DETECTORS, MAGNETIC FREQUENCY DETECTORS, FREQUENCY RECORDER DRIVERS, AND AUDIO FREQUENCY DETECTORS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The invention relates to a method for determining the filling level of a medium in a container. A mixer that has at least one mixer blade and a mixer frequency (f<1>R</1>) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (f<1>M</1>) towards the medium. The measuring signals reflected on the surface of the medium are received and evaluated by a run time method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium in a container provided with a mixer. To this end, the measuring frequency (f<1>M</1>) of the measuring signal having the mixer frequency (f<1>R</1>) of the mixer is synchronized (f<1>M</1>=n f<1>R</1>with n ? N) and that the measuring frequency (f<1>M</1>) is shifted by a defined phase (?) with respect to the mixer frequency (f<1>R</1>).