A final (third) method for mounting an accelerometer is magnetics. Magnetic mounting can be used when the object being monitored has a ferromagnetic surface. This method is preferred for flexible temporary use.
In the case of non-magnetic or rough surfaces, you can weld or epoxy a steel pad to accept the magnetic base.
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Determine the mounting location for the accelerometer.
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Apply a thread locker such as Loctite 243 to the threads of the stud to prevent losening from shock and vibration.
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Screw and tighten the sensor to the magnet, tightening to a range of 2 to 5 foot-pounds (2.7 to 6.8 Nm).
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“Rock” the sensor/magnet combination onto the selected location as shown in Figure 8, ““Rocking” motion for magnetically mounting an accelerometer (image courtesy of Connection Technology Center)”.
Figure 8. “Rocking” motion for magnetically mounting an accelerometer (image courtesy of Connection Technology Center)