SPM leonova emerald, User Manual

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Vibration measurement
To evaluate a spectrum, you need to know the RPM of
the shaft at the time of vibration measurement. Mark
‘Variable speed´ (1). This forces a speed measurement
before you can measure the vibration.
With ‘Measuring point data’ you can edit the meas-
uring parameters. Open with SHIFT+F3 and mark the
lines in the configuration window one by one with the
UP/DOWN keys. Open them with F1, ‘Edit’.
The transducer setting ‘Portable’ selects the default
transducer. ‘Time signal unit’ is the unit for the time
signal, while ‘Spectrum unit’ is the measuring unit for
the spectrum (e. g. VEL for a velocity spectrum).
The acquisition time (2) is automatically updated
when the parameters that affect the time changes.
Frequency range
The frequency range (3) is defined by selecting a
lower and an upper limit (4). Both are menu selected.
When using the optional function ‘Order tracking’ (5)
the upper frequency is set in orders.
Please note that correct measurement demands a
transducer that is linear over the stated frequency
range.
Abnormally high displacement values can occur when
selecting a lower frequency limit that is outside of the
transducer’s range.
You can exceed the upper frequency range of the
transducer when measuring an envelope spectrum.
Time signal unit
As time signal unit you can select VEL, ACC or DISP
(6).
The ‘Display’ setting (7) effects the presentation of
measuring results displayed in the result field (upper
part of the Leonova display). Select display units for
the three result lines. You can choose ACC, VEL and
DISP as RMS, Peak or Peak to peak (8).
Spectrum unit
As spectrum unit (9) you can select VEL, ACC or DISP.
Normally you would choose a velocity spectrum, i. e.
VEL.
Defining the assignment
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