9 Electronic apparatus and instruments for ultrasonic detection, control, signaling and measuring; apparatus and instruments for acoustic detection for predictive maintenance, leak detection and quality control in the industrial field; apparatus for ultrasonic measuring, namely, for automatic bearing lubrication, measuring of vibration, measuring of vibration, acceleration and speed, and measuring of temperature and humidity for industrial applications in maintenance and energy saving programs; ultrasonic fault detectors; ultrasonic sealing detectors; ultrasound apparatus for locating electric leaks; apparatus and instruments for checking sealing by mass flow, namely, tightness testing of industrial enclosures or tanks; ultrasonic measuring apparatus for the monitoring and control of production tools; ultrasonic apparatus for measuring fluids; ultrasonic wave generating apparatus not for medical use; ultrasonic measurement management software; software for data analysis, alarm management and monitoring for predictive maintenance in the industrial field; ultrasonic contact and vibration sensors; non-contact sensors for detecting leaks, locating defects and monitoring chain or belt systems; ultrasonic transmitters not for medical use; structural component parts for all the aforesaid goods