Color Global



QCT CONDENSATION TESTER

The QCT condensation tester simulates the damaging effects of outdoor moisture attack by condensing warm water directly onto test specimens. In a few days or weeks, the QCT tester can reproduce the damage due to moisture that occurs over months or years outdoors.

The QCT tester is fast, easy to use and affordable. It uses 100% condensing humidity to simulate and accelerate damage caused by rain and dew on metals, paints, and organic materials. It accelerates over natural exposures by increasing moisture temperature. The QCT tester replaces water immersion and ordinary (non-condensing) humidity tests.

Effects of Outdoor Moisture

LabScan XE Spectrophotometer

Overview


Water is a common enemy to most materials. It causes metals to corrode, organics to decompose, and structures to disintegrate. Condensation is water that has been distilled from impure water, mixed with the atmosphere, and saturated with oxygen. This type of moisture has also been called “aggressive water”, because it carries oxygen with it as it contacts a material or diffuses through a coating. Studies show that materials outdoors are exposed to an average of 12 hours per day of condensed water in the form of dew.

The QCT Condensation Tester

The QCT tester uses 100% condensing humidity to simulate and accelerate damage caused by dew on metals, paints, and organic materials. It accelerates over natural exposures by increasing moisture temperature. The QCT tester requires only ordinary tap water. This is because the tap water becomes pure distilled water in the process of evaporation from the water pan and condensing onto the specimens. The tester's innovative design utilizes room air cooling to create a temperature differential across the thickness of the specimens. This temperature differential is a necessary element for condensation to occur. It is important to note that the QCT tester is fundamentally different from a typical humidity tester.

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LabScan XE Spectrophotometer
LabScan XE Spectrophotometer

Features


Full Spectrum Xenon Lamps

The QCT tester has an automatic dry-off system, which works by blowing heated air into the test chamber. A combination of wet and dry periods can be programmed through the use of a 24 hour repeating timer, which is capable of splitting day into 96 increments of 15 minutes. The QCT tester is shipped completely wired and assembled.

The QCT tester has a sample capacity of 62 Panels at 75mm x 150mm or 48 panels at 100 x 150mm. It has a temperature range capability from room temperature to 72 degrees Celsius.

The QCT tester’s water consumption is approximately 2 liters of ordinary tap water per day. It has an automatic water feed that connects to a supply through 6mm plastic tubing. It has a corrosion-resistant anodized aluminum construction, with a water pan that is glass-lined with a magnesium anode for cathodic protection.