PRÜFTECHNIK VIBXPERT II - Trend; Trend in a Route; Display Trend Curve

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VIBXPERT II 05.2012
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. machine operating con-
ditions, measurement location and sensors must be comparable or
identical.
In ‘Route’ mode, you can access historical measurement data and ref-
erence 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 appears.
Then* the following message appears (see below):
Measurement tasks already measured!
append: The current result is added to the saved data set and ex-
tends the trend curve (see below).
overwrite: 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val-
ues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).
Left:
Append current result
Right:
Display trend curve
* When AutoSave is activated, the
message appears immediately after the
measurement.
Trend