Rion UV-16, Инструкция по эксплуатации

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23
Accelerometer Selection and Connection
Accelerometer Mounting
The UV-16 is a vibration measurement amplifi er designed for use with
piezoelectric accelerometer or accelerometer with integrated preamplifi er.
Other types of accelerometers such as electrokinetic accelerometers cannot
be used with this product. Choose a suitable accelerometer according to the
measurement requirements including measurement range, frequency range,
and environmental conditions. The accelerometer mounting method has a
signifi cant effect on the reliability of measurement data, and it will greatly
affect the contact resonance frequency. The advantages and disadvantages
of various mounting methods are outlined below. Refer to this information
when making your selection.
Rigid screw mounting
This mounting principle assures optimum fre-
quency response characteristics. The mounting
surface should be perfectly smooth, and the screw
holes must be drilled in such a way as to assure
perfect perpendicularity of the accelerometer.
Insulation attachment mounting
This mounting principle is used when electrical
insulation between accelerometer and measure-
ment object is required. The contact resonance
frequency will be lower than with rigid screw
mounting. Regarding the screw holes, the same
precautions as for rigid screw mounting apply.
Magnet attachment mounting
Because the contact resonance frequency will
be quite low, this principle is mainly suited for
vibration measurements in the medium to low
frequency range. The maximum acceleration that
can be measured depends on the accelerometer
mass.
Rod attachment mounting
Pressing the accelerometer against the measure-
ment object with a rod is the simplest method,
but the measurement frequency range would be
about several hundred Hz, because the contact
resonance frequency will be very low. This
method should only be used if none of the other
three mounting methods are feasible.
Measurement
object
Accelerometer
Accelerometer
Insulation
attachment
Measurement
object
Measurement
object
Magnet
attachment
Accelerometer
Measurement
object
Rod
attachment
Accelerometer