Method for eliminating influence of radon and radon daughters upon polypropylene process and radioactive instrument
A radon progeny and polypropylene technology, applied in the field of polypropylene production, can solve problems such as abnormalities and instrument inconsistencies, and achieve the effect of eliminating or reducing interference and meeting production needs
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[0012] Specific embodiment one: in this embodiment, radon, radon progeny influence on polypropylene process and radioactive instrument are eliminated by wrapping a layer of thickness on the outer wall of the detector to be 2mm lead skin, and the radioactive source adopts 6mCi cesium-137 radioactive source .
[0013] The use of 6mCi cesium-137 radiation source reduces the ratio of the radon received by the detector and the gamma rays emitted by the radon progeny to meet the measurement conditions of the level gauge. Add lead protection to the outer wall of the detector to reduce environmental interference, increase the high voltage of the instrument and the activity of the radioactive source, increase the pulse received by the instrument, increase the delay time of the nuclear instrument, and avoid fluctuations in the influence of the environment on the instrument. When no material is fed, the temperature rises The boost is used to calibrate the thermal zero point of the meter....
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