Subatmospheric pressure air leakage testing (ISO 80369 and ISO 18250) in laboratories located at high elevations

The ISO 80369 and ISO 18250 series of standards include a leakage test that requires the application of a subatmospheric pressure to a connection between a small bore connector or reservoir connector and a reference connector.

Enersol’s Automated Subatmospheric Pressure Air Leakage Tester has been designed specifically for this test. These models are automated test systems designed for use by any testing laboratory where this test needs to be carried out. The equipment is simple to use and has a touch-screen interface. It also automatically calculates the leakage rate, which is used to determine whether the sample under test conforms with the performance requirements of the standard.

Some of the standards in the series such as ISO 18250-8, ISO 80369-6 and ISO 80369-7 require a pressure to be applied in the range of 80 kPa to 88 kPa below atmospheric pressure. These pressures are achievable at most locations on Earth though it is difficult to achieve from about 1200 m above sea level, and it is not directly achievable from an elevation of about 1900 m above sea level.

Enersol has written a whitepaper on this issue and developed specialised equipment to suit higher elevations. The Enersol Automated Subatmospheric Pressure Air Leakage tester for high elevations is known as S78BH. It is similar to the normal models, though it also includes a pressurised chamber to create an atmosphere where 80 kPa to 88 kPa below that atmosphere, is achievable. The S78BH is recommended for laboratories located from about 900 m above sea level.

The full whitepaper can be accessed here: 

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