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Accumulation Tracer Gas Systems

Accumulation Tracer Gas Systems use the same instrumentation as Atmospheric Sniffing but use an enclosure to isolate the part from ambient background and contain the tracer gas.

Highlights of Accumulation Tracer Gas Systems:

  • Better accuracy than sniff testing
  • Can detect leaks in the range of 1x10-5 scc/s
  • Effective when atmospheric background is controlled
  • Test time required may be longer than other tracer gas leak test methods Custom Accumulation Tracer Gas Leak Test System

Accumulation Tracer Gas Systems provide an alternate type of tracer gas leak testing when atmospheric background is controlled. Instead of measuring the leak directly on the part, accumulation systems analyze the concentration of tracer gas in an enclosed chamber. Test cycle time for accumulation tracer gas leak testing is typically longer than sniff leak testing. However, it provides increased sensitivity and can detect leaks in the range of 1 x 10-5 scc/s.

Accumulation tracer gas test chambers are typically custom designed to minimize the space around the test part. This method of leak detection involves measuring the concentration level increase of the tracer gas as it accumulates in the test chamber. A good measurement occurs when the rate of rise equates to 100 ppm. The volume of the air space around the part in the chamber dictates the amount of test time necessary to achieve a measurable and repeatable tracer gas change in concentration.

To achieve a successful Tracer Gas Accumulation test the atmospheric background must be controlled effectively, because fluctuations of tracer gas atmospheric ppm will affect the leak rate measurement.

CTS application engineers can assist you in deciding whether your part(s) are a candidate for this method based on your leak rate specifications and throughput requirements.


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