Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Product List
KMA36 Universal Magnetic Encoder Slide 5

An M-R sensor differs from a Hall Effect sensor in many respects. The M-R sensors measure the angular orientation of lines of flux while Hall Effect sensors measure the strength of the magnetic field. As the KMA36 uses an array of M-R sensors, field angle measurement accuracies are typically better than 1%. It’s difficult to produce Hall Effect sensor elements that are consistent unit to unit and typical overall product accuracies are ±20%. Magnets can be manufactured with very consistent flux line patterns, unit to unit. Consequently, magnet sorting and grading are not required for M-R sensors. For Hall-Effect sensors, high performance systems require magnets that have good field strength consistency, unit to unit. These magnets are expensive or must be sorted, adding labor costs. The KMA36 is a high performance non-contact sensor that will provide very high accuracy and resolution in position and angle sensing. Hall Effect sensors are lower performance and find most utility in switching and low resolution proximity sensing.

PTM Published on: 2013-01-04