75
Technical Information
* Contact resonance frequency
Contact resonance occurs when the area the mounted accelerometer con-
tacts the measurement object becomes temporarily deformed, causing it to
act like a spring. This spring and the accelerometer mass then form a system
that vibrates at a certain resonance frequency.
The resonance frequency, which varies considerably depending on the mount-
ing method of the accelerometer, limits the upper range of vibration frequen-
cies that can be measured.
The diagram below shows the relationship between mounting method and
high range characteristics. This demonstrates that, besides selecting an ap-
propriate mounting method, it is important to set the measurement range so
that the influence of the contact resonance phenomenon is excluded.
Sample chart showing the influence of accelerometer mounting method on
high-range frequency characteristics
To Next Page
Loading...
Need help?
General
