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Pull force between two disc magnets
Pull force between disc magnet and flat
Pull force between two block magnets
Pull force between block magnet and flat
Magnetic field of a Disc magnet
Magnetic field of a block magnet

Sensor Magnets - Permanent Magnets Specified
for Magnetic Sensors and Transducers
 

ChenYang Technologies GmbH & Co. KG supplies all kinds of permanent magnets specified for applications to magnetic sensors/transducers, such as magnetostrictive position sensors, magnetoresistive (Hall, AMR and GMR), reed sensors etc. These magnets are made by NdFeB, SmCo, Alnico, ceramic/ferrite, bonded magnetic materials and are customer specific magnets with different shapes, sizes and magnetic properties. The following table help you find the optimal magnet material for your sensors and transducers.

  


Magnetic Material NdFeB Material Hard Ferrite SmCo Material Alnico Material
Max. Energy Product B×H max (MGOe) 28 ~ 51 0.8 ~ 5.1 14 ~ 32 1.13 ~ 9.0
Remanence (kGs) 10.2 ~ 14.5 2.0 ~ 4.6 7.5 ~ 12 5.2 ~ 13.5
Intrinsic Coercivity iHc (kOe) 11 ~ 30 1.6 ~ 5.0 5.2 ~ 25 0.38 ~ 1.88
Curie Temperature (C) 310 ~ 370 460 700 ~ 800 810-860
Maximum Operating Temperature (C) 80 ~ 200 250 250 450 ~ 550
Temperature Coefficient of Br (%/C) -0.12 ~ -0.10 -0.18 ~ -0.2 -0.05 ~ -0.03 -0.025 ~ -0.02
Temperature Coefficient of iHc (%/C) -0.6 0.2 ~ 0.5 -0.25 ~ -0.19 0.01 ~ 0.03




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