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MR sensor

AMR sensor

AMR sensors are made of ferromagnetic material and it works by the magneto-resistive effect.
It works even with low magnetic field and in the wide range of temperature and it has excellent frequency characteristics.
Therefore, it can be used in the environments where optical sensors can not work properly.
High resistance type of AMR sensors are also available.


G-GMR sensor

G-GMR Sensor (Granular-Giant Magneto-Resistive)
G-GMR sensor can have higher resistance change rate than AMR with its wider sensing range. 
The resistance of G-GMR sensor changes according to the magnetic field strength.
Such high resistance change rate is realized by very strong “magneto-resistive effect” from ferromagnetic materials with granular structure particles dispersed in non-magnetic material.