HFM-III alpha beta surface contamination monitor for hands and feet
HFM-III Hand-Foot Surface Contamination Monitor
HFM-III alpha beta hand and foot surface contamination monitor is mainly used in radiation control channels of nuclear power plants or related nuclear facilities. It monitors the surface contamination of the hands and feet of workers from the control area in order to detect contamination in time and prevent the transfer of contamination. It can also be used in other radioisotope application departments, is an important equipment in the field of nuclear radiation protection, and is one of the means to ensure safe production for nuclear power plants or related nuclear facilities and other radioisotope application departments.
Its main functions are:
1. By measuring the contamination level of the human body's hands and feet, we can judge whether the contamination level exceeds the limit set by the owner.
2. Discover the hidden danger of accident by analyzing the measured data saved by the instrument in time.
3. Avoid cross-contamination between controlled and non-controlled areas and prevent pollution from spreading.
Product characteristics:
This instrument chooses flat-plate flow gas proportional counter as detector, which has the characteristics of simple maintenance, long service life and good energy response. It is convenient to use radiation source to check whether the instrument is working properly. The instrument can monitor the contamination on the surfaces of the hands and feet of the human body through a single measurement (3-10 s). If there is contamination on the surface of hands and feet, the instrument will automatically alarm and point out the specific parts of the contamination. The whole monitoring process of the instrument is fully automated.
Technical specifications:
1. Detector Type: Flat Flow Gas Proportional Counter, Six
2. Types of monitoring rays: alpha and beta
3. Display units: Bq/cm2, CPS
4. Sensitive area of detector:
Hand 300 cm 2, foot 450 cm 2
The total sensitive area is about 2000 cm2
5. The efficiency for alpha and beta is not less than 30%.
At the measuring window of the detector, the difference between the response to incident radiation with energy of 150 keV~7 MeV and the response to reference energy is not more than 60%. The lowest detectable lower limit (measuring time 10 s, environmental background 0.2 ugGy/h, confidence 95%):
β：0.37 Bq/cm2
α：0.037 Bq/cm2
The series ratio of alpha and beta meets the requirements of EJ/T586.
6. Size: 1450 (high) * 1000 (long) * 650 (wide) mm
7. Temperature: 0-40 C
8. Relative humidity: less than 90% (40 C)
9. Atmospheric pressure: 0.0860.1160 MPa
10. Power supply: AC 220 V
