Direct-Reading Dosimeter
The Direct-Reading Dosimeters are rugged, precision instruments.
They are designed to measure and directly read, at any time accumulated dose of gamma and
x-ray radiation exposure. (There are different models according to range
Provide an accurate and instantaneous indication of accumulated
exposure for personnel working in radiation areas
Accurate to 10% of True Dose for Cs-137 or Co-60 gamma
Less than 0.5% leakage of full scale in 24 hours at 50° C
Hermetically sealed
Resembling fountain pens in size and appearance, they contain a quartz Fiber electrometer and
compound microscope
The Fiber is set at zero with a battery-operated charger. As X- or gamma rays strike the charged
Dosimeter, the Fiber moves up in scale in proportion to the radiation exposure…