Pipe capacity
equivalent bulk modulus K’ ( bulk modulus ) concerns these characteristics in respect of a pipe filled with oil. If the enclosed oil volume under pressure is represented by the letter V, the pipe capacity may
Contact seals
also suitable for sealing moving surfaces. However this statement does not apply to soft metal seals with plastic deformation.
Function diagram
accumulator volume diagram. As at the same time signals that trigger a function can be added, mostly with their signal elements , the function diagram also represents a graphic link between the signal circuit
Dirt absorbing capacity of a filter
pressure Δp A ( Figure S 30 ). The test for the dirt absorbing capacity is performed in accordance with ISO 4572 ( Filter cumulative efficiency ). ISO 3968 contains the tests to determine the pressure
Circular sealing gap
bore diameter d K = piston diameter d m = average diameter h = gap or half the diameter tolerance. With an eccentric circular sealing gap , it is case of: ( Figure K 37 b ) If the piston is positioned to
Oil cooler
loss. Two cooler designs are available: Water-cooled oil cooler : The oil flow passes through pipes with turbulence inserts to increase heat transfer. The fluid in these pipes flows in the opposite direction
Signal output element
Indirect signal output elements either output the measured value in a form which can only be identified with auxiliary equipment or special knowledge or they relay the measured value directly to downstream
Flow resistance of filters
pressure drop is not linear, but instead corresponds approximately to a 3rd order function, a filter with a differential pressure that corresponds to half the permissible value is not around half clogged
Flow in gaps
velocity v (e.g. the piston rod), a Newtonian drag flow will form without a differential pressure with a velocity distribution ( b ). These two velocity profiles overlap if the pressure difference acting
Self-monitoring of systems
which identifies error messages of individual sensors, isolates them and can replace their signals with estimates. In measurement technology, the self monitoring is achieved by enhancing the measuring device