Test method of accuracy and stability of differential pressure leakage detection equipment

The invention belongs to the technical field of leakage detection measurement and discloses a test method of the accuracy and stability of differential pressure leakage detection equipment. The method comprises the steps of (1) loading a component with an allowable leakage value L into the differential pressure leakage detection equipment, and obtaining a leakage value qi of an ith measurement, (2) obtaining an average leakage value q, (3) accessing a standard leakage hole with a leakage value P to a differential pressure air tightness instrument, (4) repeatedly measuring the leakage value of a same component, and obtaining a leakage value Qi of a jth measurement, (5) obtaining the average leakage value Q of the component after adding the standard leakage hole to the differential pressure leakage detection equipment, (6) obtaining the accuracy error and stability error of the differential pressure leakage detection equipment, and (7) according to the accuracy error and stability error, combined with com