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Measuring system in which the information on the actual (absolute) position is always available. For this purpose the sensor (e.g. glass measuring scale) must provide additional information. This info

Measured variable for the pressure difference between p 1 and p 2 . The differential pressure can be positive or negative, depending on whether p 1 is greater than p 2 or smaller than p 2 (Figure D 23

To measure the differential pressure Δp the two pressures p 1 and p 2 must be separated from each other by diaphragms that are connected by a plunger. The deflection of the two diaphragms then corresp

Device that measures the difference between two pressures. This can be a pressure gauge with display or an electrical output. It can also be a device based on a or a piezoresistive system that either

Double-acting cylinder with one-sided piston rod in which the ratio of the piston area AK to the annular area on the piston rod side is essential for the function of the fluid-related circuit (CETOP R

Inductive position measurement

Circuit that routes the outlet flow on the piston rod side on a differential cylinder to the inlet on the piston side to increase the flow velocity ( rapid traverse circuit ) (Figure 22) . As a conseq

Double-action piston that has a smaller area A R on the rear. Pressure on the piston area A K generates the piston force and pressure on the annular area A R (in (Figure D 21) ) generates a counteract

Inductive position measurement

If mineral oil that contains air bubbles is compressed very quickly, the bubbles are heated so quickly that even self-ignition of the air-gas mixture can occur. As a consequence a very large increase