3-28
VIBXPERT 11.2010
Trend
The standard procedure for monitoring machine conditions is the
regular recording of characteristic overall values over a longer period
of time. The trend of the machine condition can be traced back from
the resulting trend curve and its probable development in the future
can be predicted.
To obtain a meaningful trend, measurements must be carried out
under always reproducible conditions - i.e. operating conditions,
measurement location and sensors must be comparable or identical.
In ‘Route’ mode, you can access historical measurement data and
reference data that you can compare to the current measurement
data, if necessary.
Trend in a route
• Open the relevant route.
• Select the measurement task for which at least one measurement
has already been saved.
• Start the measurement.
After the measurement, confirm the prompt to save which ap-
pears. Then* the following message appears (see below):
Measurement tasks already measured!
A
PPEND
:
The current result is added to the saved data set and
extends the trend curve (see below).
O
VERWRITE
:
The current result overwrites the already saved mea-
surement data.
• To display the trend curve, highlight the measurement task icon
and press the MENU key.
• Click on ‘Display Result’. The progression of the measurement
values can be evaluated in the trend screen (see P. 4-3).
Prerequisite:
The 'Show result' option in the Route device setup
must be set to 'History' (P. 2-15).
* When AutoSave is activated, the
message appears immediately after the
measurement.
Trend
Left:
Append current result
Right:
Display trend curve
Summary of Contents for VIB 5.300 EX Series
Page 170: ...6 24 VIBXPERT 11 2010 Decleration of conformity ...
Page 171: ...6 25 VIBXPERT 11 2010 ...
