Patent ID: 9170240
Filing Date: 2015-10-27
Classification: G01N

Abstract:
1. An ultrasonic particle measuring system, comprising: an ultrasonic transducer; which has at least one ultrasonic transducer element; at least one coupling element; a control unit; and an evaluation unit suitable for amplitude analysis of reflection signals of acoustic signals reflected from particles to said ultrasonic transducer, wherein: during operation, acoustic signals are transmittable and receivable by said ultrasonic transducer element via said coupling element; said coupling element is embodied as an acoustic lens; said ultrasonic, with said evaluation unit, amplitudes of reflection signals in a predetermined time interval are countable, which are greater than a predetermined threshold value; said ultrasonic transducer element is suitable for transmitting a first acoustic signal of a first frequency, and is suitable for transmitting a second acoustic signal of a second frequency; said control unit, is suitable for exciting said ultrasonic transducer element for transmitting the first acoustic signal and for exciting said ultrasonic transducer element for transmitting the second acoustic signal; and the first frequency is different from the second frequency; wherein particle sizes of the particles in the measured medium are ascertained from the amplitudes of reflection signals received, which are greater than a predetermined threshold value; and wherein particle concentration in the measured medium is ascertained from the number of amplitudes of reflection signals received in a predetermined time interval with amplitudes greater than the predetermined threshold value.