Máy đo phóng xạ, bức xạ
Model : PDM-127
Hãng sản xuất  : RPD
PDM-127 Electronic Pocket Dosimeter - µSv.
The PDM-127 is a highly-sensitive dosimeter for measurement of Gamma(X)-ray and is compact enough to fit comfortably in a pocket. With an energy threshold that goes down to 20 keV, it is best suited for applications in X-Ray. The PDM-127 displays both accumulated dose and dose rate.
Features
• Light and compact to fit in a pocket
• Wide measurement range from 1µSv to 1 Sv
• Accumulated dose and dose rate measuring
• Data holding function
• Simple operation of only one button
PDM-127 Electronic Pocket Dosimeter Includes
(1)  Battery
(1)  Strap
(1)  Instruction manual
(1)  Calibration certificate
(1)  Inspection certificate 
Specifications
Radiation Detected:  Gamma and X-ray
Energy Threshold:  20 KeV
Detector:  Silicon semiconductor
Measurement Range: 
Dose:  1 µSv – 1 Sv
Dose Rate:  1 µSv/h – 100 mSv/h
Accuracy:  Within ± 10% 10 µSv – 1 Sv; Calibrated by 241Am using slab phantom
Power:  One CR2450 Lithium Battery (conforming to IEC60086-2) 
Battery Life:  Approx. 350 hrs of continuous use (at room temp 20° C) 
Environmental Requirements:  -10° to +50° C: relative humidity up to 90% non-condensing
Dimensions:  30 W x 11 D x 108 H mm excluding clip
Weight:  40 g
Please Note:  Nonconforming battery may cause a malfunction of the instrument