MCS 1000 Series
Evaluating measurement results
HYDAC FILTER SYSTEMS GMBH
en(us)
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BeWa MCS1000 3435427f V130 en-us 2012-06-15.doc
2012-06-15
Evaluating measurement results
The counter readings of the MCS are not comparable with particle concentrations as
these are known from optical particle counters per ISO 4406.
If the counter reading stays the same, this does not mean that a constant particle
concentration is present, but rather the no further particles have been detected.
Occurring particles need not have been generated immediately before being
detected by the sensor. Depending on the system, they may be sedimented
particles that were stirred up by shaking or vibration and then got into the fluid
stream.
For detailed evaluation of the measurement results, it is necessary to know the
following operating parameters of the system:
Is a constant, variable, or only temporarily existent fluid stream through the
sensor present?
Example: During the analysis of the particles occurring each day, the actual
operating duration of the system is to be considered. This can vary significantly
from day to day, for example, in gear transmissions in wind energy plants.
Is it possible for particles to flow back?
Example: In case of depressurization from an incompletely bled system.
Is a fluid filter present that filters out the particles, or are they conveyed through
the circuit?
Example: Without filtration, an individual particle can be detected several times
by the MCS.
