The Method of Dynamic Absolute Calibration on Pressure

摘要

The working principle of dropper-hammer dynamic pressure calibration device is presented. The method of actualizing dynamic absolute calibration with this device is also presented. The method is to implement dynamic absolute calibration with the pressure sensors with high precision and low price instead of those with high price and limited precision.The several methods of actualizing dynamic calibration on pressure with acceleration sensors nowadays are analyzed and compared.The basic idea of passing dimension of dynamic absolute calibration and the method of calibration on pressure-measuring system are presented.lt is clarified that this method can effectively improve the uncertainty of quasi-static calibration on pressure sensor.lt is also testified by practice that this method is an effective and feasible method to improve the uncertainty of dynamic absolute calibration on pressure.