Objet de la recherche «*».

Quotient of an observed change in the and the causing (sufficiently small) change in the input signal (or the measured variable ). The term sensitivity of a measuring device is primarily used for indi

Velocity at which the pressure in a device increases. It is measured in bar/s and defines, e.g. on pumps, the amplitude of the pressure pulsation-induced oscillations and with it also the amount of no

Time span that starts when the value for the controlled variable after a step in the disturbance variable or reference variable exceeds a pre-defined portion of the control error and ends when it retu

Error in the of a which is below the response threshold of the continuously adjustable valve . Normally, less than 5% of the valve current is needed to bring the speed of a closed circuit position con

Power of the input signal, which is necessary to control a valve under defined conditions (DIN 24 311).

The area ratio of a hydraulic cylinder is calculated from the square of the piston diameter dp divided by the square of the difference between the piston and rod diameters dp - dr. Calculate the area

Pressure difference as a function of the flow rate , e.g. for the reversed flow rate direction on valves with bypassing check valve:

Inductive position measurement

Filter on the hydraulic fluid tank that filters the air flowing in as the pump draws fluid to prevent contamination by this route. Its filtration grade should correspond to that of the oil filter.

In general : A system with input variables u 1 (t ) ... u p (t ) and output variables v 1 (t ) ... v q (t ), which has a certain transfer function , is called a transfer element (EDIN 19 226 Part 2) (