The measuring principle and construction of an intelligent radiation thickness gauge are introduced.All kinds of factors that may influence the accuracy of the intelligent radiation thickness gauge are studied.A set of integrated treatment methods to ensure high accuracy to the intelligent radiation thickness gauge is presented
such as choosing a suitable radiation source according to different object and measurement range
calibration-curve method
automatic dynamic adjustment
dynamic temperature compensation and manual correction.The experimental result shows that the measurement accuracy of the gauge is ±0.5 % in a basis weight range of 20
4
000 g/m
2
or a thickness range of 0.02
4
mm
the quality of the gauge is stable and reliable.It can be widely used in the on-line basis weight or thickness measurement for the produc