Spring assisted sealing elements
for requirements that cannot be addressed using conventional elastomers. With fluoroplastics they can withstand temperatures from –200°C to +250°C and are resistant to aggressive media.
Elastic materials
Most important material group for seals . Due to their elastic properties they can change shape on installation, adapt to deviations in the geometric shape of the surface to be sealed and make possible
Adjustable displacement pump
Variable pump on which the geometric displacement can be set (limited) to a specific flow rate . This setting is made, e.g., by means of a stop screw that fixes the pivoting of the cylinder drum to a specific
Error tolerance range
curve in a measuring device that contains a systematic error as well as the random errors, provided it can be estimated (Figure F 6) . The description of the accuracy limits by means of an error tolerance range
Load pressure compensation
flow control valve ). Continuously adjustable valves are combined for this purpose with a , which can be arranged at the inlet or the outlet ( Figure L 8 ).
Linear control signal
it may prove helpful to store the target characteristic curve in a memory so the measured signal can be corrected on an ongoing basis.
Rotary pipe joint
to a moving (oscillating) part of a machine. Along with oscillating movements, rotary pipe joints can in general also undertake relatively slow rotary movements.
Digital
variable to be represented by a code . If the variable to be represented is analogue, the code assignment can only be undertaken after defining the levels ( quantising ) ( analogue/digital converter ).
Speed control circuit
of a hydraulic motor) as a controlled variable as accurately as possible to a setpoint. This action can be undertaken by changing the flow Q 2, i.e. the pump delivery flow (Figure D 41) , or the displacement
Binary data processors
Systems in which only binary signals are transferred. They can contain, along with discontinuous two-point elements, also continuous elements provided the binary character of the overall system is retained