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Optimising Your Products for Their Climatic Conditions

A range of conditions, both natural and man-made, can be simulated under laboratory conditions to vary temperature (-80ºC to +300ºC). We can simulate conditions such as humidity (10% to saturation), corrosive atmospheres (salt, sulphur dioxide (SO2), hydrogen sulphide (H2S)), sand/dust ingress, water ingress and fluid contamination, among many others.

Temperature can either be varied rapidly (20 ºC/min) with liquid nitrogen (LN2) cooling, or thermal shock utilising our automated twin compartment chambers.

Climatic testing can be combined with shock and vibration to further simulate the expected environmental conditions to which your product will be subjected.

Climatic tests are performed to either accepted national and international standards or to customer specific requirements. If you are unsure what is required for your target environment, TT Electronics can help tailor a test plan to suit your unique needs.

Examples of standards to which we regularly test:

  • BS EN Series e.g. BS EN 60068
  • BS 3G100
  • DEF STAN 00-35
  • DEF STAN 07-55
  • EN 60948
  • IEC 60068 Series
  • MIL STD 202
  • MIL STD 810
  • MIL STD 883
  • RCTA DO 160
  • National specifications e.g. ASTM, DIN, etc.
  • Company specific specifications e.g. Ford, Jaguar, VW, etc.

To complement climatic testing methods, the TT Electronics's testing solutions engineering department can design and manufacture Automated Test Equipment (ATE) to support product testing. Our fully equipped model shop designs and manufactures any associated test fixtures that may be required.

Corrosive Atmospheres (Salt Mist / Spray with Optional SO2)

TT Electronics' well-appointed corrosion facility in South Wales supports a range of tests including:

  • Salt Mist/Spray/Fog
  • Acid Rain
  • Salt Mist/Spray/Fog with Sulphur Dioxide (SO2) injection

By varying the solution and also the introduction of corrosive gases, we can also conduct tests that simulate the effects of acid rain and salt spray with increased levels of sulphur dioxide by controlled injection.

Gas Corrosion

Gas corrosion is an accelerated means of determining the suitability of materials to be used in indoor equipment operating environments, as well as external environments which may be polluted with sulphur combustion products or hydrogen sulphide.

Our highly specialised gas corrosion facilities enable gases to be injected under calibrated conditions to validate the suitability of plated finishes during product life.

Examples of standards to which we regularly test:

BS 2011 Part 2.1 / Test Kc / IEC 68-2-42.
BS 2011 Part 2.1 / Test Kd / IEC 68-2-43
BS EN 600068-2-60 / IEC 68-2-60
BT Spec D22116 (Battelle)
DIN 50018 (Kesternich)
DIN 50017

Sulphur Dioxide (SO2)

Advanced testing is used to determine the corrosive effects on contacts, connections and other products, where exposure to sulphur combustion polluted atmospheres could occur. In particular, tests will reveal the effect on precious metal covered contacts (excluding silver and some of its alloys, see hydrogen sulphide) and the tightness or effectiveness of wrapped or crimped connections.

Hydrogen Sulphide (H2S)

This determines the effect of tarnishing on silver and silver alloys for contacts, connections and other products. As with sulphur dioxide, it also covers the effect on the tightness or effectiveness of wrapped or crimped connections.

Mixed Flowing Gas

TT Electronics also has non-accredited test facilities for performing mixed flowing gas. This helps to determine the corrosive influence on electronic products, components, equipment and materials. The atmosphere is made up of a mix of four different gasses at various concentrations. The gasses used are sulphur dioxide, hydrogen sulphide, chlorine and nitrogen dioxide. The test can be performed at varying temperatures and humidity levels.

Condensed sulphur dioxide (SO2) testing is also available.