Scientific, nautical, surveying, optical, weighing, measuring, signalling, checking in the nature of supervision, life-saving, safety and data protection and data transmission apparatus and instruments for measuring, checking, verifying, protecting, saving, regulating, and monitoring physical properties, such as displacements, pressures, forces, temperatures, vibrations, torsional moments, speed, fluid level, oil quality, ice or frost formation, in industrial processes, in manufacturing installations, in energy production installations, in buildings, in machines and rotating machines, namely, gas turbines, steam turbines, and hydro turbines, and machine tools and in vehicles and locomotion units on land, in the air, in the water or in space; accelerometers and piezoelectric accelerometers; static and dynamic pressure sensors; vibration velocity sensors; velocimeters; air gap sensors; speed and rotational speed sensors; phase reference sensors; position and displacement sensors; ice or frost sensors; proximity sensors for relative vibrations, for relative displacements and for differential dilatation; sensors for measuring eccentricity; speed measurement probes; pyrometric probes; combustion flame detectors; thermocouples; pressure and temperature switches; pressostats and thermostats; transducers for detection of ice or frost, of static and dynamic pressures, of vibration velocity, of air gap and of speed; electric devices for remote ignition; ice or frost detection systems consisting primarily of ice or frost sensors and of de-icing or defrosting controllers; rotor track and balance monitoring and diagnostic units; oil debris monitors, electric chip detectors and magnetic chip collectors; fluid level detectors; [detectors of forces;] displacement transducers; rotary transmitters; [torsional moment transducers; dynamometers;] transmitters; monitors, condition monitors, diagnostic units, prognostic units and protection units; units for monitoring and automatic control of combustion; signal conditioners, modular vibration signal conditioners; galvanic separators; electric cables and electric cable assembly; vibration monitors; remote signal interfaces; controllers and regulators; relay controls; signal acquisition and processing modules; signal integrators; data control and storage units; electric, [electronic and/or mechanical units and equipment for protecting and securing closed spaces, doors, passages and other access to secured spaces;] computers, computer peripherals and software for controlling, measuring, checking, verifying, protecting, regulating and monitoring the aforementioned apparatus and instruments, and parts for the aforementioned goods