Research on the Method of Calibration for the Standard Tube
As the standard calibrator of ultrasonic thickness gauge,standard round tube is very important to cali-brate curved wall thickness of ultrasonic thickness gauge.At present,the current calibration specification only puts forward the technical requirements for the standard round tube,but does not provide the calibration method.This pa-per presents a method of calibrating the wall thickness of standard round pipe with a digital display altimeter.The feasibility and rationality of the method are verified by analyzing the structural force,movement process and calibra-tion uncertainty.The experiment shows that the method can automatically find the"turning point",reduce the labor load and improve the work efficiency.
standard tubeheight measuring instrument with digital displayextreme-point
万方数据
维普
