3-2
VIBXPERT 11.2010
What is a measurement task?
To carry out a measurement, VIBXPERT requires information on the
type of measurement variable*, the sensor being used and, if
necessary, data for the evaluation of the result. Information as to
whether the RPM must be recorded with each measurement is also
required. This data set is designated as a 'measurement task' and
forms the basis for each measurement with VIBXPERT.
To simplify the preparation of a 'multimode' measurement and to
save the user from having to enter the required data, VIBXPERT
already contains a comprehensive collection of predefined knowl-
edge-based measurement tasks. The user is only allowed to change
the transducer and to alter the measurement channel in these
measurement tasks. If extensive changes to the measurement param-
eters are required, it is better to create a new measurement task.
In the 'Route' and 'Machine Template' operating modes, VIBXPERT
receives the measurement tasks directly from the OMNITREND PC
software. Only a few of the measurement parameters here can be
changed (transducer, measurement channel, RPM entry).
The following overview shows the structure of a measurement task in
VIBXPERT:
*Measurement variable:
Vibration acceleration,
Vibration velocity
Vibration displacement as overall value,
time signal or spectrum respectively
Shock pulse,
Temperature,
RPM,
...
The measurement tasks are sorted according to measurement vari-
able* and assigned a measurement icon in the selection screen. If you
are in the 'Multimode' operating mode for example, all measurement
tasks of the 'Vibration velocity - Characteristic value' measurement
variable appear under the icon shown above. The letters 'a', 'v', and 'd'
in the icon stand for 'Acceleration', 'Velocity' and 'Displacement'.
Measurement
Measurement
variable
(icon)
Measurement
tasks
Overall velocity >600RPM
Overall velocity >120RPM ..
Measurement
setup
Sensor setup
Evaluation
setup
RPM
velocity / 10-1000 Hz
VIB 6.140
ISO 10816-3 group 2
velocity / 2-1000 Hz
VIB 6.142
ISO 10816-3 group 1
RPM measurement No measurement
Velocity
To Next Page
Loading...
Need help?
General
