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Operation
Before You Measure
4
4-23
Sensor Mounting
The Tester’s diagnoses are largely dependent upon the
quality of vibration signal it receives from the machinery
under test. The method used to mount a Sensor to the
machine directly affects the quality, accuracy, and range
of the signal, see Figure 4-3.
In general, permanent mounts, such as stud or adhesive
mount, yield the best results. These are best for
machines that:
• run at high speeds and frequencies
• have a driving unit that runs at greater than
6000 RPM (for example, vacuum pumps)
• include a speed changer (gearbox) that results in an
output shaft speed of greater than 5x the input shaft
speed
• include an integrated speed changer (for example,
centrifugal compressors)
Permanent mountings promote more consistent data if
tracking machine condition over time. The advantages
and disadvantages of permanent mounts are as follows.
Stud Mount
Adhesive Mount
Magnetic Mount
gbk11.eps
Figure 4-3. Sensor Mounting Options
1.888.610.7664 sales@GlobalTestSupply.com
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