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ELSTER sensors are devices or units that can sense pressure signals and convert them into usable output electrical signals according to a specific pattern. Pressure sensors typically consist of a pressure-sensitive element and a signal processing unit. Depending on the type of test pressure, pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors. Pressure sensors are one of the most commonly used sensors in industrial practice, widely applied in various industrial automation control environments, including water resources and hydropower, railway transportation, smart buildings, production process control, aerospace, military industry, and petrochemicals.