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The Motion Sensors (MSI) series of zero speed sensors integrate within the sensor body the Hall Effect or Magneto-Resistive element/s and all amplification and signal-conditioning electronics necessary to produce digital square-wave output with excellent noise immunity and transmission capability.

These sensors can sense ferrous metal (e.g., gears) and magnet targets at airgaps up to .200" to .250", depending on target geometry and sensor construction. Units can be configured for single or (dual) bi-directional sensing. The design also include a circuit that offers complete protection in the event of any connection mis-wiring, not only reverse polarity. The output frequency of these sensors has a square pulse waveform 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.

MSI can make zero speed sensors in customer-specified lengths, diameters, configurations, mounting threads (e.g., metric) as well as with different operating specifications and options like pigtail leads, NPT threads for explosion proof applications, etc. Please contact Motion Sensors and they would be happy to make a product that meets your specifications.