There are times when helium is not the ideal tracer gas for a particular leak testing application and where one of the air leak testing methods does not have adequate sensitivity for the application. In most cases of non-helium tracer gas leak testing methods the test part already has another gas present. Filling the product with helium may be too costly, not possible, or be harmful to the product. Under these conditions some of the traditional helium leak testing methods (hard vacuum, accumulation, or sniffing) may be used—substituting the helium tracer gas with another gas and utilizing other gas sensor technology. Sensitivities of this method can be as low as 1 x 10-7 atmcc/sec in production environments. Some common test gases are all refrigerants, sulfur hexaflouride, argon, hydrogen, nitrous oxide, carbon dioxide, among others. Applications include refrigeration systems and components, high voltage switchgear, single use compressed gas cylinders, gas filled airbag inflators, missile systems components, among others.

Learn more about non-helium tracer gas leak testing by searching our blog. Also, send us your application information by using the Custom Tracer Gas Leak Test Application Request Form.

Check out some of the unique application examples below that LACO has developed.