September 11, 2025

This article discusses whether the differential pressure airtightness tester needs to be used with standard parts. Daily testing equipment can be calibrated to directly measure the product, but equipment calibration, comparison, quality certification and customer acceptance, the standard parts are essential to enhance the reliability of testing. Precision Engineering suggests that the daily testing of direct measurement of the workpiece, verification with standard parts comparison, certification audit to provide standard parts traceability data.