Transmission method
channel (one line) per bit is required, whereas in series transmission, only one channel is needed, with the individual bits transferred one after another as impulses. As a rule, parallel data transmission [...] The key characteristic of synchronous, series data transmission is the exact matching of the data with the clock signal on the bus. As soon as the baud rate of the series data transfer is present, the [...] symbol when it is ready to send such a symbol. Between the symbols, a continuous break signal, normally with a higher level, is issued: Each data unit in an asynchronous data flow must carries its own synch
Sum pressure
valve, hydraulic motor). For valves : Sum of pressure p A and p B in the operating ports A and B with a consumer that is not subjected to load and hydraulic zero (DIN 24 311). The sum pressure gives an
Controlled subsystem
a burden on the servo valve or proportional valve, the drive element, hydraulic motor or cylinder with the mechanical transfer elements ( Figure R 18 ).
Filter pores
irregular arrangement of fibres that are often of varying thickness (Figure F 17) . For this reason with tissue filters it is only possible to achieve a particle distribution, as given in the contamination
Limit switch
Contact pressure gauge ). A differentiation is made between Direct limit switches : that as rule operate with spring contacts to keep the contact wear as low as possible, Indirect limit switches : that as a rule
Error tolerance
and are switched such that the replacement components automatically take over the function of a part with an error. A self-testing system ensures that an error that has occurred is detected immediately.
Control diagram
diagram for straightforward systems is normally integrated into the function diagram in accordance with VDI 3260 and is only designed as an independent diagram for highly complex systems.
Engine oil as hydraulic fluid
People would be perfectly happy to work with just one type of oil in mobile hydraulics, i.e. using the same oil in the both the engine and the hydraulics. This, however, is not advisable from either a
Analogue data acquisition
recording of measured values must be sufficiently accurate to satisfy the requirements associated with their further processing. This is particularly true of measuring in , since errors occurring between
Safety gate valve
fluid when the gate is open. The safety gate valve is designed as a pilot-controlled seated valve with a switching movement that is electrically monitored when activated mechanically .