Patent ID: 8102181

Claim:
An electromagnetic device for rapid non-destructive quality control of physical and chemical properties of powdered materials by means of an electric field in the space between electrodes of a capacitive sensor, said system comprising; measuring electro capacitive sensor having periodic structure with electrodes that can be flat parallel rectangular electrodes, or multiple flat parallel electrodes, or cylindrical electrodes including a combination of two concentric hollow cylinders or cylindrical segments; ultrasonic energy component for removal of residual powder from the sensor, and for obtaining an uniform amount of powdered material between the electrodes of said capacitance sensor when immersing the transducer into powder material, said ultrasonic device being mounted together with a measuring electro capacitive transducer in a common case; managing capacitive transducer with coplanar electrodes; inductance coil, which together with a working capacitive transducer, constitutes a resonant circuit; alternating current signal generator having selectable output frequencies; circuit for measuring of self-capacitance and Q-factor of the resonance circuit containing said capacitive sensor; power generator for an electromagnetic acoustic transducer to produce agitating vibration; circuit for measuring the capacitance of a capacitive sensor; circuit for measuring the agitating vibration produced by said electromagnetic acoustic transducer; circuit for measuring the phase of the generator; circuit for measuring frequency of the harmonic oscillations produced by the AC signal generator; circuit for determining capacitance of a working transducer in powdered material; circuit for ascertaining the digital value of the correcting signal; circuit for ascertaining digital value of the informative signal; circuit for the distinguishing between of high-quality and poor-quality powdered materials which have been tested based on average informative parameter values from multiple tests; suitable data display monitor.