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3-6
Measurement - Route
*For more information, see also Chapter
5 'Measurement tasks'
As well as the standard measurement tasks*, the following route-
specific measurement tasks can be included:
Adaptive measurement task
An adaptive measurement task automatically adapts the sequence
of the route to the condition of the machines. If these run within
the permissible range, the data collector only records overall
values. This keeps the resulting volume of data and number of
measurement tasks to a minimum.
If an overall value exceeds the selected warning or alarm level,
additional diagnosis measurements are automatically performed.
These additional measurement tasks (spectrum, overall values) are
stored in the OMNITREND PC software for each machine.
The threshold value which triggers the diagnosis measurement is
defined in the OMNITREND software as an 'adaptive trigger'. If no
'adaptive trigger' is defined, the diagnosis measurement is trig-
Note
gered when the lowest threshold value is exceeded.
Visual inspection
A visual inspection task includes all types of data gathering that
are based on defined conditions of a machine and that cannot
be measured with electrical signals. For example, the degree of
contamination of an aggregate, the belt tension on a drive or the
fill level of a tank can all be ascertained without having to measure
a signal. The possible conditions in OMNITREND are defined in the
form of a 'visual inspection task' (e.g. 'Aggregate clean / slightly
contaminated / heavily contaminated'). The machine condition is
inspected in situ and the applicable option selected from a list.
Manual entry
This measurement task allows numerical measurement values that
were acquired from another measurement device or read on a
display instrument (e.g. flow rate, pressure,...) to be entered in VIB-
XPERT.
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