In the condensation step, the water (from the public supply network) existent in a reservoir located at the bottom of the weatherometer
was heated to produce vapour that condensates (distilled water) at the surface of the exposed specimens.
For weatherability, the 1K aircraft topcoat demonstrated a color change ([DELTA]E) of 0.64 when tested for 3000 h in a Xenon-Arc Weatherometer
chamber (Figure 8) according to ASTM G155, whereas a qualified Type IV polyurethane topcoat demonstrated a color change of 0.73 after the same period.
The HBUA and HBUANS coatings were examined for their gloss and nonleaching property of SNPs from HBUA coatings by exposing the coated aluminum panels to QUV-accelerated weatherometer
. The test was carried as per the method described in "Accelerated Weathering Test" section.
Even the passive effects of the sun don't go unstudied as the lab also employs a powerful ultraviolet "weatherometer
," a device that can accelerate the effects of UV light on products.
Samples were placed for 300 h in a programmed weatherometer
according to PSA D27 1389.
Tests could include salt water soak tests, Sutherland Rub tests, chemical resistance tests, Fadeometer tests, Weatherometer
tests, and burst strength tests."
"More important," Harman says, "we're looking at the aging susceptibility of the clear binder using a weatherometer
and assessing the material's infrared spectrum.
two hours) using the Atlas Weatherometer
. For the wash fastness testing the concentration of "UV-absorber 1" on the fabric is determined spectrophotometrically from the relationship k/s derived by Kubelka/Munk.
Accelerated measurements are conducted on solar exposure and temperature extremes with a weatherometer
and computer-controlled environmental chamber.
Looking like a big arc welder of the future from Tomorrow's World, a carbon arc weatherometer
is a device to simulate in 1500 hours 10 years of real-life exposure of the paint to the elements.
UV (ultraviolet) stability shall be measured per ASTM 53 - 88 utilizing a QUV Weatherometer
with QFS 40 bulbs.
Tenders are invited for Tender for supply installation and commissioning of uv weatherometer