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Line connecting the signal averages in the (static) characteristic curve for a device where hysteresis is averaged out, i.e. with hysteresis at zero ( Figure M 27 ) (DIN 24 311).

Central position for valves with three switching positions . With directional valves , it is generally arranged with the help of centring springs and then becomes the initial position . Around 14 vari

This covers in terms of hydraulics the range from around 60 to 250 bar.

Auxiliary device for measuring pressure and/or temperature at devices and when installed (in operation). This is only possible if some thought has already been paid during the planning stage for a sys

Most commonly used form of hydraulic fluid (" oil hydraulics "). Their high level of lubricity and relatively high viscosity make it possible to use gap seals in pumps and valves and therefore choose

Lower limit for a pressure value at which a device or system will still be functional (DIN 24 311).

Measuring error , measurement uncertainty

Determining the measured value of a physical variable — the measured variable — by means of an indirect or direct comparison with a known reference variable. Measuring requires a master reference elem

Covers all the various measuring instruments and auxiliary instruments required to pick up a measured variable , relay and modify a measured signal and output a measured value to represent a measured

Component of a flow control valve at which the flow rate to flow through the valve is pre-selected. The target flow rate is pre-selected by setting the flow cross section for the measuring throttle. T