Methods for identifying probes
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I would like to ask if it is possible to distinguish between magnetic resistance vibration displacement probes and eddy current vibration displacement probes based on their appearance? What are the differences in their preamplifiers?
There’s a big difference: eddy current sensors require power supply, while magnetoresistive sensors do not. The difference lies in the wire; eddy current testing uses coaxial cables.
These two are probably the two types that are used in large quantities on aircraft. I think they look very similar just by looking at their appearance.
This post was last edited by Cui Jingfei on 2021-4-1 09:50. Magnetoresistive types are also divided into active and passive ones. Active types can measure speeds at full rotation, while passive types can only measure speeds above 100 rpm.