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The T402

Low Cost, Rugged, Handheld Radiation Monitor


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This monitor provides a non intrinsically safe alternative to the T202 but retains the same high level of functionality and robust construction for field operation. The instrument has been engineered for use in a wide variety of industrial applications where the presence of radioactive materials creates the potential for individual exposure and establishes a requirement for doserate monitoring.

The TRACERCO™ T402 Radiation Monitor has been specifically designed to be lightweight but robust and comfortable when used over extended periods in the field. It provides additional key operational features such as personal dose integration and peak dose rate memory.

Ruggedised nylon 6/6 construction and modular integrated electronics provide an all-weather instrument with minimal servicing and maintenance costs


  • Detects x-rays and gamma rays down to 60keV
  • Digital bargraph display: 0.1-1000µSv/h
  • Digital doserate indication: 0.1-10,000µSv/h
  • Integrated dose function – allows the instrument to be used as a personal dosimeter
  • Peak doserate memory – allows maximum exposure levels to be recorded
  • Displays calibration due date
  • Back light facility
  • Audible response with alarm set thresholds
  • Audible response with adjustable alarm thresholds

Specification (click to open)

Item Data
Casing Rated IP65
Radiation Detected X_Rays & gamma in the range 60KeV to 1.25MeV
Detector Single Halogen Geiger Muller Tube
Dose Rate Range Bar Graph Meter 0-1000 µSv/h (displays 0.01µSv/h)
Digital Meter 0-10,000 µSv/h
Accumulated dose range Digital 0-10,000 µSv/h
Peak radiation dose rate Digital 0-10,000 µSv/h
Variation with battery voltage Less than 1%
Battery life 100 hours typically with background radiation
Battery Standard 9V PP3 battery
Weight 500 grammes
Humidity range 0-95%
Variation with Temp Less than 15% over temperature range -25&#176C to + 50&#176C

The TRACERCO™ T402 Contamination Monitor can be purchased complete with:
• Robust weatherproof transit case • Extension arm kit • Protective leather holder • Sr90 test source