The HN series of speed sensors is based on Hall Effect sensor technology, which can sense a change in target
motion from true zero to 20 KHz. These sensors incorporate a magnet within the sensor, enabling them to sense ferrous
metal as well as magnetic targets. Maximum air gap sensing distances are typically 0.100".
MSI Hall Effect Sensors are optimized to provide extremely accurate tooth edge detection when used with larger
pitch targets, and offer the unique advantage of not requiring orientation to the target. HN speed sensors integrate
a preamplifier/signal conditioner within the sensor housing that provides excellent noise immunity and greater
transmission capability. They also have a unique circuit design that offers complete protection in the event of
connection mis-wiring, not only reverse polarity. The output frequency of these sensors has a square pulse waveform
(digital) that directly relates to the number of turbine blades, gear teeth, etc. that have been sensed. These
pulses, in turn, can be correlated to determine flow rate, RPM, or velocity.
In addition to the standard models shown above, non-oriented hall effect sensors are available in custom lengths, diameters,
configurations, and mounting threads. Custom operating specifications (resistance, inductance, etc). are available, as well as
options such as pigtail leads or NPT threading. Additional sensor customization options
We provide custom sensors on a regular basis and are happy to help develop a solution for your application, or a replacement
sensor for an existing application. Please contact our engineering department at
eng@motionsensors.com or 252-331-2080 to discuss your application requirements.
