QUV Accelerated Weathering Tester เครื่องจำลองแสงยูวี Q-LAB USA

QUV/basic (Model 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.

QUV/se (Model 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.

QUV/spray (Model 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.

QUV/uvc (Model UVC)
UVC light is used widely in ultraviolet germicidal irradiation (UVGI), a technique used to eliminate harmful viruses and bacteria. This short-wavelength, high-energy UVC light can also degrade the materials and surfaces it disinfects. The QUV/uvc model uses UVC lamps to deliver light concentrated at 254 nm to test for material durability against photodegradation effects resulting from exposure to UVC light. The QUV/uvc tester has multiple safety features to prevent stray UVC light from escaping; it is also not equipped with condensation or water spray.

QUV/cw (Model 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
The Dual Touchscreen Display is designed to be both functional and easy-to-use. The QUV main controller features dual, full-color touchscreen displays and can be programmed in eight user-selectable languages (English, French, Spanish, Italian, German, Chinese, Korean, and Japanese). This system includes complete self-diagnostic error checking, constantly monitoring the status and performance of all systems. It also displays tester error messages and routine service reminders as needed. The multicolor LED status indicator light updates users on the tester’s operational state at a glance.

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.

Specialized Lamp Options

UVA-340

• Best simulation of natural sunlight in critical short wavelength region (295-365 nm)
• [View Spectral Power Distribution data for UVA-340 and UVA-340+]

UVA-340+

• Identical spectrum to UVA-340
• Extended lifetime at high irradiance settings
• [View Spectral Power Distribution data for UVA-340 and UVA-340+]

UVA-351

• Simulates UV portion of sunlight filtered through window glass
• Ideal for testing interior applications
• Reproduces polymer damage near windows
• [View Spectral Power Distribution data for UVA-351]

UVB-313EL

• Maximizes acceleration using shortwave UV (more severe than natural surface UV)
• Best for quality control, R&D applications, and testing highly durable materials
• May produce accelerated results for some materials
• [View Spectral Power Distribution data for UVB-313EL]

UVB-313EL+

• Nearly identical spectrum to UVB-313EL
• Extended lifetime at high irradiance settings
• [View Spectral Power Distribution data for UVB-313EL+]

UVC-254

• Delivers high-intensity, monochromatic, shortwave UV light at 254 nm
• Replicates UVC used for disinfection against bacteria and viruses
• Evaluates material durability when exposed to UVC light
• [View Spectral Power Distribution data for UVC-254]

QFS-40 (FS-40/F40 UVB)

• Original QUV lamp with spectrum similar to UVB-313
• Specified in select legacy automotive test methods
• Compatible only with QUV/basic tester

Cool White

• Used exclusively in QUV/cw models
• Reproduces and accelerates indoor lighting conditions
• Simulates office, commercial, and retail display environments
• [View Spectral Power Distribution data for QUV Cool White Lamps]

TUV-421

• Combines excellent shortwave UV match to natural sunlight with long-wavelength UV
• Includes short-wavelength visible light
• Reproduces color change in materials sensitive to longer-wavelength irradiance