Differential pressure sensors play a crucial role in leak testing by indicating precise measurements of pressure differences, which is essential for accurate leak detection. The sensor is used to precisely measure the pressure difference between a test part and a master part.
During an air leak test, the pressure inside the test object and the reference (master part) initially increases due to the temperature rise from pressurisation. This pressure variation stabilises during the balancing process. After stabilisation, if there is a pressure difference between the master and test object, the differential pressure indicates the presence of a leak on the test part.
