One of the most powerful diagnostic tools we have is phase
analysis and using a strobe light is a versatile and powerful tool towards that
end. As with Frequency Confirmation, you will need a phase-capable strobe for
phase, one capable of communicating with your analyzer (and an analyzer that
supports that function, of course).
Phase with a strobe light is a exercise in recording (or
remembering – we recommend recording) visible data. You are looking at the
angular location of the key, or another mark, as you move the sensor from
location to location, often recording the results on a bubble diagram on some
rudimentary drawing you’ve made of the machine and base. Obviously, this will
not be nearly as accurate as a tach or photo-eye but unless you are balancing,
using clock face numbers is sufficient for a general phase analysis. Surveying
the diagram often reveals an anomaly that, in turn, leads you to the fault and
the solution.
This tip is provided by Scott Dow, Senior Instructor of Mobius Institute.
Come back to our blog next week to read #1 in our Top 10 Reasons Why a Strobe Light is an Analyst's Best Friend. To learn more about IMVAC and the event nearest to you, visit vibrationconference.com.
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