6. Measurement
6.1. Measurement Value Display
In the top margin of the screen (Figure 18) the battery power is displayed. Next to
this the date and time are also indicated..
Below the measurand (v: 10 Hz-1 kHz RMS) the currently measured value.
The display “No Point ID” indicates that a measurement point number has not been
identified.
Note: The decimal point may appear in one of two positions, dependent on the mea-
surand. This is due to the automatic gain switch-over. In this way smaller measur -
ands with high resolutions are sure to be detected
6.2. Selecting the Display Quantity
With keys ◄► you can select from among the six available operation modes:
•
Vibration velocity 10 Hz – 1 kHz
•
Vibration velocity 2 Hz – 1kHz
•
Vibration acceleration 0.2 Hz – 10 kHz
•
Vibration acceleration 3 Hz – 1 kHz
•
Vibration acceleration 1 kHz – 10 kHz
•
Vibration displacement 5 Hz – 200 Hz
•
K(t) value for rolling bearing monitoring
•
Rotational speed and temperature
By pressing F2 you can switch between RMS and peak value for the acceleration.
velocity and displacement.
The RMS is the so-called “true” root mean square value.
The peak value, also known as crest or maximum value, is the highest vibration
value since the last displayed value.
The crest factor, is the relation between crest value and RMS. It is used to describe
the curve form. For a sinusoidal signal it amounts to √2 = 1,41. The more impulsive
the signal, the higher the crest factor.
Note: When saving measurement values (chapter 6.4) the RMS and peak value are
always saved both irrespective of the currently selected setting.
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Figure 18: Measurement display
