X-ray Thickness Gauge Maintenance_X-ray Thickness Gauge vs. Gamma-ray Thickness Gauge Comparison

　　X-ray Thickness Gauge Maintenance

　　(1) The cooling system of the X-ray thickness gauge includes the cooling of the X-ray light source and the detector. During routine maintenance, the thickness gauge must be operated at normal temperature to prevent the X-ray tube from overheating and shortening its service life.

　　(2) The operator should carefully check the cleanliness of the compressed air and the stability of the pressure to ensure that the C-frame purge air is clean and there is no dirt at the radiation source port.

　　(3) Always pay attention to the cooling water flow and cooling system temperature, and whether the desalted water in the cooling system is deteriorating or dirty, and replace it in time.

　　(4) Calibrate the thickness gauge periodically to ensure measurement accuracy.

　　(5) Regularly check the limit switch and walking mechanism of the C-frame to prevent the C-frame from shaking.

　　Comparison between X-ray Thickness Gauge and Gamma-ray Thickness Gauge

　　(1) Physical properties

　　X-ray beams can be reduced to a very small point and their structural geometry is not restricted, but gamma rays cannot do this, so the photon intensity will drop sharply and the noise will increase significantly.

　　(2) Signal/noise ratio

　　X-ray Thickness Gauge: The high photon output of X-rays can bring a noise factor about 10 times better than that of gamma rays at the same time constant.

　　(3) Response time

　　X-ray thickness gauges have high photon output and a very small time constant, which is very useful for rapid adjustment of AGC systems. The time constant of a gamma-ray thickness gauge is about 5 to 10 times that of a gamma-ray thickness gauge.

　　(4) Measurement accuracy

　　The selected energy of the gamma ray source is a single energy source and cannot be changed, which guarantees the accuracy within 0-1mm (T2 material), but it is difficult to guarantee the same accuracy within 2-3mm. The X-ray thickness gauge emits high photon energy for the X-ray tube; the operator can automatically change to the optimal value by selecting each nominal value voltage KV on the noise curve. Ensure the measurement accuracy of any variety within 1-4mm (referring to 60KV-80KV).

　　(5) Scope of application

　　For the measurement of various copper alloys, X-ray thickness gauge has wider adaptability and better effect than gamma-ray thickness gauge.

　　(6) Safety and environmental protection

　　The radiation source of the gamma-ray thickness gauge uses an isotope; an isotope is a radioactive element. When measuring the strip, the energy is the same, the measurement accuracy is inaccurate, and the measurement noise is large. The radiation energy cannot be adjusted and controlled, and long-term use will cause environmental pollution and personal injury. The radiation source of the X-ray thickness gauge uses an X-ray tube, which can control and shut down the radiation source. The X-ray thickness gauge does not emit radiation when not in use, and only emits a small range of light beams in the direction of the strip when in operation. It is safe, environmentally friendly, and accurate in measurement.