Reactant Coolant Pump Speed Sensors

Monitor pressure, flow, level, temperature, speed & position in both safety & non-safety-related nuclear applications.


Peter Kirk

Vice President of Business Development

Naval Power Systems

+ 1 203 798 3215

Our speed and phase sensors monitor the rotational speed and direction of the reactor coolant pump. They are designed, built, and tested in accordance with U.S. Nuclear Regulatory Commission (NRC) requirements for Class 1E safety-rated equipment under the Leonardo DRS Naval Power Systems’ 10 CFR Part 50 Appendix B nuclear quality assurance program. Their all-stainless-steel construction allows the sensors to operate continuously in the most extreme environments. 

The sensors is a magnetic sensor that self generates an AC signal output with frequency and or amplitude proportional to pump rotational speed. The ferromagnetic pole pieces that are on a cylinder attached to the pump rotor produce a pulse output when they pass by the sensor that is installed in the well.


  • The function of the pump speed sensor is to produce an AC signal whose output
    is linearly proportional to pump rotation speed
  • All stainless steel construction
  • Safety related/class 1E
  • IEEE 323 and 344
  • Preamplifier signal conditioner is also available
  • Flexible probe extension length to suit sensor well

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