Comparison of X-ray Thickness Gauge and Gamma-ray Thickness Gauge
X-ray thickness gauge and γ-ray thickness gauge comparison
(1) Physical properties
X-ray beam can be reduced to a very small point, its structure geometry is not restricted, while the γ-ray can not do, so the photon intensity will be reduced sharply to a large increase in noise.
(2)Signal/noise ratio
X-ray thickness gauge: the high photon output of X-rays, can bring than γ-rays in the same time constant of about 10 times better noise factor.
(3) Response time
X-ray thickness gauge for high photon output, its time constant is very small, as the AGC system is very favourable for fast adjustment. γ-ray thickness gauge time constant is about 5 to 10 times.
(4) Measurement accuracy
γ-ray source of the selected energy is a single energy source, can not be changed to ensure the accuracy within 0 ~ 1mm (T2 material), 2 ~ 3mm is difficult to ensure the same accuracy. And X-ray thickness gauge for the X-ray tube emits high photon energy; the operator by selecting the noise curve on each nominal value of the voltage KV can automatically change to the position of the zui best value. Ensure the measurement accuracy of any variety within 1 ~ 4mm (refers to 60KV ~ 80KV when).
(5)Applicable range
For a variety of copper alloy measurement, X-ray thickness gauge adaptability than γ-ray thickness gauge wide, good results.
(6) safety and environmental protection
γ-ray thickness gauge radio source used isotope; isotope is a radioactive element, measuring the strip are the same energy, measurement accuracy is not allowed, measurement noise. Ray energy can not be adjusted and control, long-term use leads to environmental pollution, personal injury. x-ray thickness gauge shot source using x-ray tube, can control and shut down the ray source. x-ray thickness gauge is not used when the radiation is not issued, only in the direction of the strip in the operation of a smaller range of beams. Safe and environmentally friendly measurement.
For steel plate, X-ray thickness gauge can only measure up to 50mm thick, and γ-ray thickness gauge in the 120mm thick range can maintain a high applicability (than the X-ray thickness gauge accuracy to be worse)
