Brief introduction: The HFM-3 α / β hand and foot contamination instrument is used in Shanghai Renri nuclear power station or related nuclear facilities to monitor the surface contamination of the hands and feet of the workers in the control area. In order to detect pollution and prevent pollution transfer monitoring equipment. It can also be used in other radioisotope applications, is an important equipment in the field of nuclear radiation protection, is one of the means to ensure the safe production of nuclear power plants or related nuclear facilities and other radioisotope application departments. Main functions: 1. Determine whether the contamination level of human hands and feet exceeds the limit set by the owner by measuring the contamination level of human hands and feet; 2. Detect potential accidents through timely analysis of measurement data saved by the instrument; 3. Avoid cross-contamination between control area and non-control area and prevent pollution diffusion. Product features: This instrument chooses the plate-type flow-gas proportional counter as the detector, which has the characteristics of simple maintenance, long service life and good energy response. It is convenient to use the radioactive source to check whether the instrument is working normally. Through a single measurement (3-10 s), the instrument can complete the monitoring of contamination on the surfaces of the hands and feet of the measured human body. If there is any contamination on the surface of the hands and feet of the measured human body, the instrument will automatically alarm and point out the specific contaminated parts. The whole monitoring process of the instrument is completely automated. Technical specifications: Type of detector: flat plate flow proportional counter, six Type of monitoring rays: α, β Display unit: Bq/cm2 and CPS Sensitive area of the detector: 300cm2 hand, 450cm2 foot; The total sensitive area is about 2000 cm2 The efficiency of α, β is not less than 30%. At the detector measurement window, the difference between the response of incident radiation with energy of 150 keV~7 MeV and the response of reference energy is no more than 60% - minimum detectable minimum at 10 s measurement time, 10 micr /h environmental background: For β = 0.40 Bq/cm2 0.04 Bq/cm2 for α The α, β ratio meets the requirements of EJ/T586. Size: 1450(height) * 1000(length) * 650(width) (mm) Low temperature: 0 ~ 40 ℃ Low relative humidity: < 90% (40 ℃)
