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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.
data acquisition system for use in connection with pipelines and wellbores only that relies on optical inteferometry to measure acoustic signals, vibrations, temperature and dynamic strain generally and consists of fiber optic sensors, optical fibers, optical interrogators that generate light pulses for transmission along optical fibers, clamps for clamping fiber onto tubulars, and software that analyzes the electrical signals output by the optical interrogators, and generates a report for the user on what the measurements taken by the system mean