Metrix HI-903 Installation Manual

HI-903 HARDY SHAKER
Installation Manual
1180
1. OVERVIEW
The METRIX Model HI-903 Portable
Vibration Calibrator provides a field
tested method for on-the-spot dynamic
verification of accelerometers, velocity
pickups and non-contact displacement
transducers. Optional mounting fixtures
and hardware needed to connect
transducers to the HI-903 mounting
platform are available upon request.
A closed-loop control algorithm provides
enhanced stability and accuracy of
frequency and amplitude levels.
DOC# 100928 • REV A (October 2017)
The HI-903 incorporates a built-in
sine wave oscillator, power amplifier,
electrodynamic shaker, NIST traceable
reference accelerometer, digital display,
and internal memory. The HI-903 is
completely self-contained and operates
on battery or AC power.
The built-in reference accelerometer
is attached permanently to the shaker
armature, maximizing the accuracy
between the reference accelerometer
and the test transducer. The HI-903 is
designed to provide long-term reliable
performance over the frequency range of
7 Hz to 10 kHz. The HI-903 can be used
for a variety of applications that include:
• Verification and calibration of
vibration transducers and related
vibration test systems
Verification of connector and cabling
•
integrity
Confirm machine vibration alarm trip
points are set properly and ensure
end-to-end functionality of vibration
monitoring systems.
Notes
• Loads of up to 800 gram (28.3
oz) can be mounted directly to
the HI-903 mounting platform.
Larger loads may be applied to the
platform, however, if prolonged
testing of a heavy load is planned,
we recommend using an external
transducer suspension system.
Under these conditions the vibration
waveform should be viewed on the
oscilloscope to aid in positioning
the test transducer and platform to
reduce distortion that can occur with
very heavy weights.