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The gear pump is a machine for conveying fluids in accordance with the Positive displacement principle . In principle it consists of three components: a housing with inlet and outlet and two gear whee

In the case of a control, the signal is transferred only in one direction. There is always one open action flow or one open impact chain ( Figure S 87 a ). A control chain as a whole can always be con

Filter to be installed into the return line of a system. The housing is designed for pressures of around 20 to 30 bar. Return line filters – regardless of the size of the pump flow rate – must be sele

Pressure used to describe or identify a device or system. It is less than or equal to the calculated pressure , DIN 24 312. The nominal pressure corresponds to the nominal value as per DIN 40 200. The

Pump with two gear wheels in most cases whose outer (ring gear) has teeth on the inside. The inner sprocket is smaller. The fluid is conveyed in the spaces between the gaps in the teeth of the two gea

Agreed maximum magnitudes for positive or negative deviations on the indication (output) from measuring devices . Error limits are pre-defined essentially in relation to systematic deviations from the

Designates the difference between the actual value of a control variable and the actual value of a reference variable. When using a regulator controller with a fixed set point, the control deviation d

Difference between the measured value and a limit value. Each measured value — and therefore each measurement result — is influenced by any imperfections associated with measuring instruments and meas

used to provide additional assistance for the controlled subsystem (e.g. an acceleration control circuit). A minor loop does not have to have a subordinate role.

Sampler