Abstract: A duct for the passage of a fluid to be detected and/or measured, for use with an ultrasound device for measuring the fluid includes: first and second pieces entirely or mostly made of polymeric material, configured to be joined and fixed together to define a measuring channel. The first piece includes: a first port for the inlet or outlet of the fluid to be measured; a first opening in the first piece for passage of ultrasonic signals emitted/received by at least one first ultrasonic sensor mounted on the first piece; a first tubular portion provided with a first abutment edge. The second piece includes: a second port for outlet or entry of the fluid from/into the duct; a second opening therein for passage of ultrasonic signals emitted/received by at least one second ultrasonic sensor mounted on the second piece; and a second tubular portion provided with a second abutment edge.

Abstract: A method to verify if a vibrational event has a higher intensity than a predefined intensity threshold, which is linked to a predefined frequency, includes: acquiring data detected by at least one accelerometer along respective X and Y axes, which are perpendicular to each other, determining values of frequency and intensity of at least one portion of the signals, derived from the acceleration data thus acquired along the two axes, when they exceed a threshold of predefined intensity, identifying, on the basis of the frequency determined, a predefined intensity threshold, and checking whether the intensity determined is higher or lower than the predefined intensity threshold identified, to establish whether or not the vibrational event from which the signals were derived has an intensity greater than the threshold of predefined intensity thus identified.

Abstract: A duct for the passage of a fluid to be detected/measured, for an ultrasound device includes: first and second pieces configured to be joined and fixed together to define a measurement channel, to be crossed by the fluid to be measured; a first port for the inlet/outlet of the fluid to be measured in/from the duct; and a second port for the outlet or entry of the fluid from/into the duct. The first piece includes a tubular portion with an open/missing area and the second piece is configured to close the first piece that the two pieces define the measurement channel which is closed in a fluid-tight manner in correspondence with the areas of union between the two pieces. The second piece includes an internal area configured to be lapped by the fluid passing through the duct and in which a signal emitted by a sensor is reflected.