IEC 60068-2-38 Composite Temperature / Humidity Cyclic Test

IEC 60068-2-38 Composite Temperature / Humidity Cyclic Test

IEC 60068-2-38 testing provides a composite test procedure, primarily intended for component type specimens, to determine, in an accelerated manner, the resistance of specimens to the deteriorative effects of high temperature/humidity and cold conditions. The IEC 60068-2-38 test is a cyclic temperature/humidity test which is designed to reveal defects in test specimens caused by “breathing” as distinct from the absorption of moisture.

The test programs associated with IEC-60068-2-38 differ from other cyclic damp heat tests in that they include increased severity from:

  • A greater number of temperature variations or “pumping” actions in a given time.
  • A greater cyclic temperature range.
  • A higher cyclic rate of change of temperature.
  • The inclusion of a number of excursions to sub-zero temperatures.

The accelerated breathing and the effect of the freezing of trapped water in cracks and fissures are the essential features of the IEC60068-2-38 composite temperature test. IEC-60068-2-38 compliance emphasizes that the freezing effect will occur only if the fissure dimensions are large enough to allow the penetration of a coherent mass of water as is normally the case in fissures between seals and metal assemblies, or between seals and wire terminations. The degree of condensation will depend mainly upon the thermal time constant of the surface of the test specimens and may be negligible for very small specimens but copious for large specimens.

Keystone Compliance has developed an expertise in conducting IEC-60068-2-38 humidity cycling testing. With multiple test chambers a dedicated report writers, our scheduling lead times and turnaround time on test reports is unmatched. With significant experience conducting temperature and humidity testing, our engineers have developed an expertise in providing engineering and troubleshooting assistance when needed. If problems arise, our team works to assist clients with identifying the best possible solutions. This level or service is the primary reason why hundreds of manufacturers partner with Keystone Compliance on an annual basis.

Contact us to receive a quote on your IEC 60068-2-38 humidity testing needs and learn firsthand why Keystone Compliance has been recognized as one of the fastest-growing companies in the country.