Nuclear Radiometer

The radiation emitted by the radiation source is absorbed by the detector after passing through the material to be measured, and the detector generates a current IX corresponding to the thickness. Its voltage drop on R is EX, and is compared with the voltage ES corresponding to the thickness set by the valuer After that, the deviation (that is, the thickness change) is amplified and sent to the display instrument or adjustment instrument for display or control. Thickness gauges that use β-rays as a radioactive source have a narrow measurement range and are suitable for measuring the thickness of thin steel strips, copper strips, paper, plastics, and rubber. Thickness gauges that use gamma rays as a radioactive source have a wide measurement range and can be used in harsh environments without being affected by smoke, steam, and moisture, but need to take protective measures against nuclear radiation.