Corner power
and the max. pressure (Figure E 1) : P E = Q max · p max = M 2 · 2πn 2. On constant pumps and variable pumps with pressure controller the corner power is also the power to be installed. On variable pumps [...] pumps with power controller the system is always configured to remain below this power for commercial reasons.
Incrementing
Increasing a value by 1, i.e. counting up to higher values in individual steps.
Switching methods for hydraulic pumps
circuit : Pump 1 leads to pump 2. This circuit is used to improve the filling of a high-pressure pump or to reach a higher output pressure at pump 2 (e.g. in the case of some internal gear pumps to reach 300
Roof-shaped seal
assembled to form roof-shaped seal sets (Figure D 1) . In principle a differentiation is made between two forms: In form (a) the limbs are in contact with each other and are pressed hard to the outside
Ultrasonic position measurement
this way is proportional to the distance travelled. A distinction is made between direct US measurements, which are relatively inaccurate (±0.1 mm), but can measure lengths of up to 5 m, and US measurement [...] lengths of up to around 2 m. It has a theoretically infinite resolution and is suitable for high traversing speeds. Both processes are among the digital measurement processes and are well suited to integration [...] measurement with magnetostrictive wave guide ( Figure U 13 ). Here current pulses flow to the wave guide, the magnetic field of which meets with a permanent solenoid on the moved part and sends out a US signal
Transmission ratio
high-pressure on the small area A 2 is greater than the low pressure on the larger area A 1. The transmission ratio is equal to the surface ratio α: In the same way, the pressure on the ring side of a differential [...] outlet on that side is closed and the piston side is pressurised. Here, the transmission ratio is equal to the ratio of piston areas .
Flow coefficient Kv (Kv value) of a valve
in one hour (minute) with a pressure drop of 1 bar (VDI 2173). The Kv value is therefore a parameter for the selection of valve sizes. It can be converted to the flow of air, gases, steam and also other [...] other pressure mediums. It is stated as a rule if valves are used generally. The Kv value corresponds to the Cv value in Anglo-Saxon countries. It is obtained via a
Kv value (of valves)
Flow in m3/h of water at +5 to +30°C passing through a device (valve) in a given direction based on a pressure drop of 1 bar and an upstream pressure of 6 bar. The practical benefits of the Kv value (of [...] fact that resistance in both flow directions associated with a 4-way valve can vary greatly (by up to 50%).
Pressure gauge
example, are used to record the pressure level. The pressure gauges used in fluid technology almost always operate indirectly via measuring devices with a spring, whose deflections are relayed to a pointer. In [...] is made between tube-type, diaphragm, bourdon tube and corrugated tube pressure gauges ( Figure M 1 a and b ).
Force: impulse, signal: pulse
e associated with a mass point is equal to the force F applied to it. 2. When investigating control circuit elements, idealised rectangular functions and the like are applied at the input and response [...] very large amplitude is referred to as a pulse or shock function. These kinds of test signals were thoroughly investigated by P. A. M. Dirac. They are also referred to therefore as a Dirac pulse or Delta [...] 1. Product of the weight m and velocity v for a mass point: The impulse/pulse is vectorial variable; its direction is same as the velocity involved. The time differential quotient for the impulse/pulse