1.Product brief introduction
With the wide application of radiation equipment in the fields of nuclear power, X-ray equipment and medical radiation, the requirements of radiation protection have been paid more and more attention. Hitson is committed to radiation detection and prevention, and has introduced a personal radiation dosimeter GM-100 for personal safety protection, which adopts an all-metal GM counter imported from Russia. This sensor has the characteristics of long life, stable data and good consistency, and has also been used by many European and American companies to develop radiation detection instruments such as personal dosimeters.
Hitson brand GM-100 personal dosimeter can detect hard β, γ and X rays in the environment or products in real time and quickly, and find radioactive sources quickly. The alarm threshold and dose mode that the instrument can set are more suitable for medical protection, nuclear power plant, X-ray machine and radiation,Leakage and other radiation protection fields.

2.chief application
1. Integration of personal dosimeter and radiation monitoring device
2. medical radiation protection monitoring
3. Monitoring and application of nuclear waste
4.X-ray equipment leakage inspection
5 neutron and other radioactive sources transportation protection
6. Measurement and early warning of other radioactive substances.
7. Support customization and development of counter tubes with different specifications.

3.product features
1.All-metal GM counter, accurate indication, fast response and long life;
2.With the function of retaining the maximum value, you can view the curve trend chart in the past hour;
3.Sound/shock double alarm, the user can set the alarm value;
4.Chinese and English bilingual menus can be switched;

4.Technical indicators:
| Function/model | GM-100A | GM-100H | GM-100M | GM-100X |
| Ray type | Hard β, γ and x-rays | Hard β, γ and x-rays | Gamma and x-rays | Gamma and x-rays |
| Detector type | Imported metal geiger pipe | Metal geiger tube | Glass cover leather tube | Energy-compensated Geiger counter tube |
| measuring range | 0~36000uSv/h | 0.01μSv/h~50mSv/h | 0.01μSv/h~100mSv/h | 0.01μSv/h~10mSv/h
|
| Energy response | 50Kev~3Mev | 50Kev~3Mev | 50Kev~1.5Mev | 50Kev~1.5Mev |
| measurement accuracy | ±15% +6/p | ±15% +6/p | ±15% +6/p | ±20% |
| Sensor life | 1X109 | |||
| unit of measure | uSv/h,mSv/h,mR/h, CPS | |||
| Alarm value function | Alarm threshold can be set. | |||
| type of alarm | Sound and vibration | |||
| cumulative time | 1-9999 minutes can be set | |||
| cumulative dose | Automatic accumulation, which can be reset manually. | |||
| Maximum maintenance | Automatically maintain the maximum value. | |||
| Curve observation | Curve atlas of the last hour, and automatically calculate the maximum and average. | |||
| Measurement mode | Fast and smooth modes. | |||
| language | Chinese and English menu | |||
| Working temperature | -20℃~60℃ | |||
| Working humidity | 5%-95%RH (no condensation) | |||
| measure | 74*58*29 mm (excluding protruding parts) | |||
| supply electricity | 1 AA dry battery | |||
| authentication | Test report and CE certification of CMA and CNAS certification bodies. | |||

