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Active Speed Sensors - RF

Active, or amplified sensors with digital output offer a low cost solution for interfacing directly to data acquisition systems. These sensors integrate a preamplifier/signal conditioner within the sensor housing and offer the advantages of excellent noise immunity and greater transmission capability.

Input power supply requirements cover the most popular ranges for both commercial and industrial use. 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.

Installation Considerations


  • Magnetic (inductive or variable reluctance) or RF (modulated carrier)


  • Unconditional one (1) year warranty if used within specifications.

Physical Features

  • Body material: 300 series stainless steel
  • Encapsulation: epoxy potting or hermetically sealed, welded construction
  • High Shock and Vibration resistance - MIL-STD-202G METHOD 214A, Test Condition H

Input Power

  • 8 to 30 VDC, 10 mA max. @ no load
  • Reverse polarity protected

Pulse Output Options

  • Open Collector
  • TTL/CMOS; fan-out of 5 TTL/CMOS loads
  • 0-10 VDC square wave (requires 15-30 VDC input power)

Interconnection Options

  • Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S; other connector types upon request.
  • Pigtail with wires or cables.
  • NPT threaded body with wire or cable pigtail for explosion proof environments.

Temperature Range

  • Operating: -40˚C to +85˚C
  • Storage: -65˚C to +125˚C

Units that operate up to +125˚C are also available

Pin/Pigtail Connections

  • Pin A (Red): Input Power (+)
  • Pin B (Black): Common (-)
  • Pin C (White): Pulse Output (+)


  • Up to 0.140" dependent on target geometry and sensor construction.


  • CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments.
ATEX & IECEx Certified: Custom & Standard Speed Sensors for Intrinsically Safe applications (also approved by CSA w/NRTL/C)