Skip to main content





The MY DOSE series allows you to check at any time the accumulated amount of radiation exposure. They are designed to be placed in a pocket (chest or abdomen) of a worker who handles radiation or a person who happens to enter a radiation handling facility.


  • Light and compact to fit in a pocket
  • Wide measurement range from 1μSv to 1Sv
  • Accumulated dose and dose rate measuring
  • Data holding function
  • Simple operation of only one button


Radiation detected X-ray and Gamma
Energy threshold 20keV
Detector Silicon semiconductor
Measurement range Dose : 1μSv to 1Sv (0.1mrem to 100rem),
Dose rate : 1μSv/h to 100mSv/h (0.1mrem/h to 10rem/h)
Accuracy Within ±10% from 10μSv to 1Sv (from 1mrem to 100rem) Calibrated by 241Am using a slab phantom
Power One lithium battery CR2450
Battery life Approx. 350 hours of continuous use (at room temperature of 20 degrees C)
Environmental requirements in operation Temperature : -10 to +50 degrees C,
Relative humidity : 90%RH or less (Non-condensing)
Dimensions Approx. (W) 30 x (D) 11 x (H) 108 mm (excluding the clip)
Weight Approx. 40 g

Model selection

  Without alarm With alarm
Gamma Standard PDM-122B PDM-222C
Gamma High Sensitivity   PDM-501
X-ray PDM-127B PDM-227C
Neutron PDM-313 -

This website includes information intended for healthcare professionals.
Please note that all descriptions in this website conform to the Pharmaceutical and Medical Device Act in Japan as well as other laws and regulations in Japan. Model names, specifications and configurations of products in overseas market outside Japan may be different by the countries.