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SRM 510™

Source Range Monitor

Neutron flux monitor for reactor startup in the source range.

Tag Features

  • Modular design, highly customizable
  • Operated with a B-10, BF3, He-3 proportional counter or a fission counter
  • Provides the count rate, calibrated neutron flux (nv) or reactor power (%FP, W, ...)
  • Calculation of flux change rate (reciprocal of the reactor period)
  • Signal filtering with adaptive filter parameters
  • Generation of analog output signals with lin. or log. scaling
  • Generation of binary alarm, trip and status indication signals
  • Integrated test signal generators and simulation capabilities
  • Secured serial interface
  • Custom detector assemblies and mounting options, field cables and connectors available on request
  • Qualified for Category A functions (Class 1 systems) acc. IEC 61226


At the heart of the SRM 510 source range monitor resides the DAK 260-i digital start-up signal processing unit that belongs to the Mirion proTK™/260 series of signal processing units for safety critical applications.

The DAK 260-i channel can be used with any type of neutron detector in the pulse mode and a matching pulse-preamplifier.

Hardware and software of the SRM 510 monitor are designed and qualified for use at the level of the reactor protection system.

With the SRM 510 monitor, Mirion provides the complete neutron monitoring system for the source range during reactor start-up from neutron detector to the safety signals for reactor protection and control.

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