Radiation Solutions

Radiation Portal Monitoring Systems

Introducing the FIRST fully Digital Technology System
4 PMT Technology, Detector size 5000 cu. ins.

The RS-400 system is a 4PMT based super-Coincidence fully digital system specially designed for the difficult operating conditions of many Steel and Scrap processing plants.  This system uses large volume detectors for optimum vehicle coverage.  These long detectors suffer substantially from signal loss using conventional technology so RSI has developed a 4PMT technology utilizing PMTs at BOTH ends of the detector for greatly improved signal collection and spectral shape.

The system is fully MODULAR to make it easily configurable to suit local logistics.  The system operates independently but has direct Ethernet connectivity to Plant networks that permit a fully integrated Plant design with RSO overview on all installed systems.  USB/Serial connectivity also enables system configuration to suit user needs for local displays, local or Network printers, scale computer integration etc.

The RS-400 system is a new-technology system that offers large detector sizes for superior detector coverage:

  • 5000 cu ins (4698 cu ins actual) detector assemblies - max 16 detectors
  • Fully digital system design - no complicated user adjustments
  • 4 PMT technology for high sensitivity + high noise rejection on long detectors
  • 10/sec data sampling rate for optimum data analysis
  • Advanced 128 channel spectrometer system
  • Full spectral NASVD analysis for high sensitivity with essentially zero false alarms
  • Essentially zero void and rain alarms due to advanced spectral analysis
  • Fully integrated networking for integration into the plant network
  • Quad optical sensors with 500Hz data sampling for accurate vehicle sensing
  • 12" or 15" color touch screen display for easy user interfacing
  • Alarm classification if required to sort alarms into scrap and non-scrap
  • 48V operation to minimize voltage drops on long cables
  • Auto connection to RSI service centre via the Internet for fast service support
  • RSO software supplied for alarm analysis direct from RSO office
  • Real-time (1/sec) error reporting to RSI service via the Internet for fast support
  • Automatic system sensitivity monitoring with auto gain correction
  • Modular system design for easy servicing
  • System designed for easy on site service by local staff for ?instant? service support
Product Brochure Technical Data More Information


  • RS-400/10000
    = 2 detector system
  • RS-400/15000
    = 3 detector system
  • RS-400/20000
    = 4 detector system
  • RS-400/25000
    = 5 detector system
  • RS-400/30000
    = 6 detector system
  • RS-400/35000
    = 7 detector system
  • RS-400/40000
    = 8 detector system