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Vacuum Air Decay Leak Testing

TQC provide air decay leak testing solutions for all types of components to measure air pressure decay.

For vacuum air decay leak test methods, standard leak testing measurement instruments are incorporated to find drop off in air pressure or air flow on the components being tested.

TQC offer test pressures between vacuum and, typically, 16bar (150psig) as standard, with leak testing measurements down to a resolution of 1 atm.mm3/sec. All air decay leak test parameters may be programmed into the instruments supplied as part of the solution, and the resulting data is available for subsequent Statistical Process Control (SPC) analysis.

Vacuum air decay testing (below 0 bar)

Differential vacuum leak testing has a number of advantages –

  • Offers more robust leak testing by minimising external effects
  • Limits temperature dependency effects
  • Assists sealing loading
  • Reduced stabilisation time
  • Often a faster throughput
  • Indirect leak calculation
  • Offers complex fault detection

Vacuum air decay leak testing is suitable for the following component and environment applications:

  • Welded pipe fittings
  • Large volume parts
  • Automotive engine sumps

The generation of the vacuum is an additional element of the leak test and requires either a vaccum ejectors and for larger volumes a vaccum pump to be added to the equipment supplied for the leak testing. Generally vacuum stabilises quicker and is less susceptible to changes in ambient conditions.

Read more about our High Pressure (Over 6 bar) and Low pressure (0-6 bar) leak testing machines.

To find out more about how we can help you:

We build all machines in-house, applying our extensive experience in specialised test and automated handling machines to the engineering projects we undertake. We offer customer support, backup and service call-out for all projects, whatever the size.

Get in touch with us to discuss your requirements and we will be happy to offer our professional advice and visit you at your site.