Temperature and Humidity Chamber (Constant Mode)

Temperature and Humidity Chamber (Constant Mode).png (356 KB)

The PR-3F temperature and humidity chamber provides temperature and humidity testing for identifying and rectifying weakness in all forms of products.  The 85/85 test uses a temperature and humidity testing threshold that applies to the vast majority of environmental evaluations. It involves setting test chamber conditions to an internal temperature of 85oC, a relative humidity index of 85% and held for as long as 1,000 hours to simulate 20 years of moisture ingress into a given product.

Typical Applications:

  • Epoxy coatings: Temperature and humidity testing places epoxy-coated products in extreme stress, where any weaknesses through expansion, contraction, moisture ingress and surface corrosion or abrasion are exposed
  • Fogging: Any product weaknesses quickly show when stressed to hot and cold cycles of damp and dry. Moisture fogging between layers is a sure sign of product failure
  • Water tightness: Water leakage or ingress weaknesses become readily apparent after testing. Those failures can emerge quickly under testing, or they can take a long evaluation period
  • Mechanical failures: Changes in heat and cold cycles can take a toll on many products, often ending in minor or catastrophic mechanical failure. Testing is front-line insurance against products failing in the field and resulting in damage or injury


  • Temperature range: -20oC to 100oC
  • Humidity range: 20 to 98% rh
  • Constant mode only (no temperature cycling feature)
  • Temperature fluctuation: +/- 0.5oC
  • Humidity fluctuation: +/- 3% rh
  • Internal dimensions: W600xH850xD800mm
© Centre for Advances in Reliability and Safety.