Display and switching device DE58 is for measurement of differential pressures with mainly neutral liquid and gaseous media. Areas of Application are filling level measuring technology for technical gases. The device is based on a robust and durable dia-phragm measuring unit that is suitable for measur-ing overpressure, underpressure and differential pressure. The pressures to be compared have an effect on a spring mounted measuring diaphragm. In case of equal pressure, the measuring dia-phragm is in its idle state. In case of pressure difference, the force acting on the measuring dia-phragm causes it to be moved towards the side of the lower pressure until the spring forces compensate this force. This movement is transferred via a tappet into the core of the inductive displacement sensor. The linear movement of the core is propor-tional to the applied differential pressure. The electronics integrated into the device evaluate this movement and transform it into signals on the dis-play, switch contacts and an optional output signal.
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