UNCERTAINTY EVALUATION OF CALIBRATION SPECIFICATION FOR PRESSURE REFERENCE LEAK

Pressure reference leak calibration with compare method is simple and efficiency.To evaluate uncertainty of calibration specification for pressure reference leak with compare method，we establish math model，analyze the influence and the sensitivity of uncertainty，evaluate the uncertainty caused by the calibration apparatus and repeat measure，comparatively extendable uncertainty of calibration specification for pressure reference leak could be gained.At last，through experimentation，this paper gives a demonstration of calibration specification for pressure reference leak.