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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
sensors with or without actuators, namely, to measure and optionally control one or more parameters of one or more fluids, liquids, or gases, namely, to measure volumetric flow, mass flow, density, concentration, viscosity, dielectric constant, refractive index, ph, color, dissolved oxygen, level, energy content, heat capacity, content, composition, brix sugar content, api gravity, temperature, and other specific quality indicators, used to monitor with optional control the quality or quantity of the fluids and devices that use the fluids, with control features to further optimize the efficiency of a machine using the fluids and general manufacturers of other products, mixing, and monitoring the authenticity of fluids in the nature of custody transfer or quality control, used in a variety of applications and fields