Page 15 - Vibrations 3
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It has a linear response in the useful frequency range
(UFR).
The UFR is part of the device’s specification.
You buy an accelerometer for a specific task – its
frequency range.
The charge amplifier has a low pass filter which removes
any frequencies above its UFR.
As an indication the UFR goes up to 10 kHz.
Needless to say the weight of the accelerometer should
be much less than the structure you wish to monitor, as a
rough guide < 10% of the body weight.
Mounting options
▪ Handheld or probe tips
▪ Magnetic
▪ Adhesive
▪ Stud mount
Stud mounting is by far the best mounting technique, but
it requires you to drill into the target material and is
generally reserved for permanent sensor installation.
The other methods are meant for temporary attachment.
The various attachment methods all affect the
measurable frequency of the accelerometer.
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