Thermoplastics
increase), where moulded parts lose their form (voltage). When cooling, plastification of the materials may occur This process can be repeated as desired. Seals or sealing parts made of thermoplastics must therefore
Pump control
than the load pressure ( Figure P 36 ). If large flows need to be controlled, a multi-pump system may be more cost-effective, consisting of one variable pump and several constant pumps , which can then
Temperature measurements in hydraulics
pressure fluid at certain locations within the system. For example, the temperature of the pressure fluid may be very high at certain throttle points. If the temperature of the pressure fluid must be known at
Buckling of rams
Slim pressure rods such as thin piston rods may buckle outwards if the compressive force F exceeds a permissible value (Figure K 12) . This value is referred to as the buckling force F K. Cylinders with
Feedback
variable of a process and further use at another point. This is generally a feedback control, but may also be data collection, for example. In control technology : In closed loop structures the signal
Safety of a system
this means that large quantities of energy are stored. The sudden release of this compression energy may be very dangerous for plant operators. This is particularly true if hydraulic accumulators are also [...] or unnecessarily inconvenience someone, they must be protected against external influences, which may cause malfunctions, the impact of wear and ageing on safety must be taken into consideration. To meet
Power limiting
pressure p to a maximum value, so the power drawn cannot exceed the drive power installed. Power limiting may be subordinate to some form of pressure reduction ( pressure controller for a variable pump), something
Test conditions
comparison, when comparing the measured values from different laboratories, systematic deviations may occur, which cannot be determined without further effort in each individual laboratory. Example: In
Redundancy
redundancy measures in fluid technology are focused on signal distribution . However, fluid systems may also have a redundant design. In doing so, the redundant devices (circuits) are connected such that
LAN
of the user and are restricted to their premises. (ISO/IEC 2382-25.). More than one local network may be connected with each other in the same private area. A gateway to the public network can be arranged [...] wishing to send something begins its transmission when things seem to be right with the bus. This may result in data collisions if more than one node wants to send something at the same time. Disrupted