INSTRUMENTATION • ELECTRONICS


Choosing the right leak testing equipment is of vital importance


Testing W TECHNOLOGIES


How to choose a leak testing method that’s best for your needs


hen deciding on the best solution for a leak testing challenge, many factors need to be


taken into consideration, including the risk, suitability and cost of each method. Various technologies are available and it’s critical to choose one that is optimal to your application requirements. In recent years, huge strides have been made in electronic leak testing methods that use air or tracer gases, resulting in new techniques, enhanced sensitivity and faster test cycles. These changes have resulted primarily as


a response to cost pressures as well as the need to adapt to a changing environmental and safety regulatory environment. Before making any decision on


  it’s best to discuss your options with a professional equipment supplier to get  solution. Here, we look at two main


technologies, namely air leak testing  and helium leak testing (with mass 


AIR LEAK TESTING WITH MICRO-FLOW SENSOR In this method, the test part is pressurised from a pressure source with the regulator and valve isolating the test part from the source once pressurisation is complete. The pressure sensor then monitors and measures the pressurised test part and if the pressure measurement decreases, air is leaking out of the component or assembly under test. As air leaks, the micro  maintain a constant pressure, with the loss causing an electrical signal that is proportional to volumetric or mass


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