REN200 Personal Dosimeter, internally installed with Geiger counter tube as the inspector, is mainly used for monitoring radiations of X, gamma and hard beta rays in various radioactive work places with features of quick reaction and wide measurement range. It can display the dose equivalent rate and accumulated dose in the work place. The calendar, time and other cumulative data can be permanently saved when replace the batteries. It is used extensively for staff personal safety protection monitor and radiation alert in environment monitoring for places including nuclear power station, accelerator, steel industry, chemical industry, isotope application,   nondestructive inspection with X and gamma rays in industry, medical radiation, cobalt source treatment, gamma irradiation, radioactivity laboratory and nuclear facilities.

Features:
1. Monitor X, gamma and hard beta rays.
2. With high sensitivity, the instrument can also measure the environment background.
3. Interface using both of Chinese and English.
4. Contemporary measurement and display for both of dose rate and accumulated dose.
5. The permanently saved data will not lose after the power failure.
6. Graphic LCD with adequay big screen.
7. Low power consumption; indication function of battery under voltage.
8. Presettable alarm threshold of dose rate and accumulated dose.
9. Optional alarm modes including sound / light / vibration.
Technological Parameters:
1. Radiation Detection: gamma, X and hard beta rays
2. Detector: energy compensation GM tube （Geiger counter tube）
3. Measurement range
a. Dose equivalent rate: 0.01～1000μSv/h （maximum 10mSv/h）
b. Accumulated dose equivalent: 0.01μSv～500.0mSv
4. Energy range: 50 keV～1.5 MeV ≤±30% （for 137Cs 1）
5. Relative inherent error: ≤±15% （137CS  1mSv/h）
6. Sensitivity: 80 CPM /μSv/h （for Co-60）
7. Alarm threshold:
a. Dose rate: arbitrary selection among 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 μSv/h
b. Accumulated dose: arbitrary selection among 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0 mSv
8. Dose rate unit: μSv/h, μGy/h, mR/h
9. Measurement display: the dose rate display will update every second and the protect alarm display is shorter than 5 seconds.
10. Operating environment: temperature  -10℃ ~ +45℃.
Relative humility: ≤95% （+45℃）
11. Power supply: 2 AA batteries or rechargeable batteries
12. Dimensions and weight: 0.3kg; 135×70×25mm