The versatile TM850 radiation detection portal is ideal for inspecting large vehicles and rail cars, even when loaded with dense cargo. Capable of high-speed throughput, the TM850 detects both gamma and neutron radiation.


  • Large vehicle and rail portal monitor

  • Automated inspection operation

  • Remote monitoring for centralized oversight and data storage

  • Adjustable pillar height and spacing to accommodate site-specific requirements

  • Programmable detection parameters allow for customization to meet the needs of specific applications

Physical Specifications

  • Operating Configuration: Drive-through vehicle or rail cargo monitor
  • Pillars: Primary and secondary pillar
  • Number of Gamma Detectors: 4 detectors; 2 per pillar
  • Gamma Detector Material: Polyvinyltoluene (PVT) plastic scintillator
  • Panel Dimensions on Stands: 160 in H x 63 in W x 10 in D (406 cm H x 160 cm W x 25 cm D)
  • Panel Weight: 1,600 lbs (725 kg)

Performance Specifications

  • Gamma Radiation Detection: Meets ANSI N42.35 and IEC 62244
  • Special Nuclear Materials (SNM) Detection: 200 g HEU or 3 g Pu-239
  • Gamma False Alarm Rate: Less than 1 in 1,000 passages


  • Inspection Speed: 5 mph (8 km/h)
  • Ports: RS232, Ethernet

Environment / Safety

  • Temperature: -29 °F to 122 °F (-34 °C to 50 °C)
  • Humidity: 5 to 95% non-condensing
  • Environmental Protection: IP65