User Guide
– Vibration Analysis Setup for KEMET Vibration Sensors
The above information is believed to be correct but does not purport to be all inclusive and must be used only as a guide.
11
© KEMET Electronics Corporation
• One East Broward Boulevard • Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
6.2
Sensor Comparison Calibration Method
The vibration sensor is measured according to the comparative calibration method.
In the comparative calibration method, the standard sensor and the measurement sensor are
overlapped and vibrated. This method allows measurement of the output sensitivity by
comparing the difference between the two sensors
’ outputs.
As shown in Figure 19, if the standard sensor has sufficient rigidity, exactly the same vibration
will be applied to both sensors.
Figure 19
– Comparative Calibration Method with Screw Fixing
If unsuitable fixing methods are used, analysis will reveal a difference in signal magnitude
and/or frequency (see Figure 20). Differences will occur in the measured values and errors
will occur in the frequency characteristics and sensitivity.
Figure 20
– Comparative Calibration Method with Screw Fixing
