Thiết bị kiểm tra độ phai màu của sơn bằng tia QUV model QUV/SPRAY hãng Q-LAP
Model QUV/basic
This is a simplified version of the QUV tester for the lab where economy is critical. The model QUV/basic uses fluorescent UV lamps and a condensation system for moisture simulation. The model, however, does not include the SOLAR EYE irradiance control. Consequently, the light intensity cannot be adjusted or calibrated. This means the QUV/basic tester cannot be used for high irradiance testing. In addition, periodic lamp replacement and repositioning is required.
Q-Lab recommends the QUV/basic tester for comparative exposures where the test specimens and the control specimens are exposed at the same time, in the same tester.
Model QUV/se
The most popular QUV model features the SOLAR EYE Irradiance Control, for precise maintenance of UV light intensity. The QUV/se tester uses a proven condensation mechanism to simulate outdoor moisture attack.
The SOLAR EYE system is a precision control system that automatically maintains light intensity through a feedback loop. The controller monitors UV intensity and compensates for lamp aging and variability by adjusting power to the lamps. The SOLAR EYE system provides:
- Controlled irradiance
- Longer lamp life
- Faster results
- More reproducible and repeatable testing
- ISO calibration
For more information on the benefits of the SOLAR EYE irradiance control system, see LU-0801 - QUV Brochure.
Model QUV/spray
The QUV/spray tester has the same functions as a standard QUV/se, but also includes a water spray system. Short periods of spray can be used to create a thermal shock. Longer periods can be used to achieve mechanical erosion. The QUV/spray tester can be set to produce: UV alone, spray alone, or condensation. Deionized water is recommended for all spray applications.
Model QUV/cw
Some industry test methods specify the use of cool white fluorescent lamps for indoor photostability testing. To reproduce these indoor light conditions, the QUV/cw uses ordinary cool white fluorescent lamps. It has a SOLAR EYE irradiance control system that monitors and controls visible light output, rather than UV. See LU-0823 - QUV/cw Summary for more information.
Temperature Control
All QUV UV testers precisely control temperature to enhance accuracy and accelerate test results. Although temperature does not normally affect the primary photochemical reaction, it does affect the rate of any subsequent reactions. Therefore, the QUV tester’s ability to control temperature is essential during UV exposure.
Versatile Specimen Mounting
Standard specimen holders easily adjust for any thickness up to 20mm (3/4") and allow fast, snap-action specimen mounting. Retaining rings provide positive hold-down and do not require that test specimens be cut to close tolerance. In addition, custom holders are available for mounting various products, such as lenses, larger specimens, and 3-D components. See the accessories tab or our specimen mounting page for more information.
Controls & Optional Software
Designed to be both functional and easy to use, the QUV controller can be programmed in five user-selectable languages (English, French, Spanish, Italian or German) and includes complete self-diagnostic error checking. The controller constantly monitors the status and performance of all systems. It also displays simple warning messages, routine service reminders or performs safety shutdown, as needed.
An external USB port on every QUV tester allows users to perform software upgrades quickly to address key performance issues. For quality systems that require documented proof of test conditions, this USB port can also be used to download tester performance history. Additionally, every QUV tester is equipped with an Ethernet connection. Optional VIRTUAL STRIPCHART PC software allows the user to automatically record and monitor exposure conditions and directly transfer data from the QUV UV test chamber to a Windows-based computer. Data from either the USB export or PC application can be emailed directly to Q-Lab's technical support desk for expert troubleshooting and diagnostics.