advantage of Eddy current sensors over Hall sensors

[senmeis]

What’s the main advantage of Eddy current sensors over Hall sensors? Both can be used for displacement measurement.

 

[dick_freebird]

I would bet that makers of both types have published papers
on this very subject.

Both types have signal conditioning chains to make the
sensor output into system-useful input. These can be the
dominant part of bandwidth / response time. Highly
variable in my little bit of looking. Like, bare Hall is mV
and nanoseconds, but you want a 0-5V signal then you
have to accept a much more leisurely response - so no
use of buffered-Hall sensors in current sense leg of high
speed switching power supply, etc, though DC-leg current
sensor applications, those would maybe be fine.

 

[FvM]

There are quite different position ("displacement") sensor configurations . Discussing best sensor principle without specifying the configuration makes little sense. You should also consider capacitive, differential transformer and optical sensor principles.

 

[senmeis]

I’m not talking about specific applications but rather general information. Maybe there are different specs such as sensitivity and movement frequency?