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The QUV accelerated weathering tester reproduces the damage caused by sunlight, rain & dew. In a few days or weeks, the QUV tester can reproduce the damage that occurs over months or years outdoors.To simulate outdoor weathering, the QUV tester exposes materials lớn alternating cycles of UV light and moisture at controlled, elevated temperatures. It simulates the effects of sunlight using special fluorescent UV lamps. It simulates dew và rain with condensing humidity and/or water spray.The QUV accelerated weathering tester is the simplest, most reliable, và easiest to use weathering tester available. With thousands of testers in use worldwide, it is the world"s most widely used weathering tester.

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Overview

QUV - The World"s Most Widely Used Weathering TesterUV light is responsible for almost all photodegradation of durable materials exposed outdoors. The QUV tester’s fluorescent lamps simulate the critical short-wave sầu UV và realistically reproduce the physical property damage caused by sunlight. Types of damage include color change, gloss loss, chalking, cracking, crazing, hazing, blistering, embrittlement, strength loss và oxidation.Dew, not rain, is responsible for most of the wetness that occurs in outdoor exposure. The QUV tester"s condensation system realistically simulates dew và accelerates its effect using elevated temperature.The condensation process automatically purifies theordinary tapwater used in the system.This is because the process ofevaporating & condensing the water onlớn the specimens is actually a distillation process, which removes all impurities. SeeLU-0801 - QUV Brochure.The QUV tester conveniently accommodate up khổng lồ 48 specimens (75milimet x 150mm) và complies with a wide range of international, national, & industry specifications, ensuring the reliability & reproducibility of your test program. Visit ourstandards page for more information.Easy to Operate The QUV tester’s simple, proven design makes it easy lớn install, easy lớn use, & almost maintenance-không lấy phí. It operates completely automatically, 24 hours a day, 7 days a week. Features include:

Simple user interface for easy programmingExposure conditions displayed continuouslySelf-diagnostic warnings & service remindersQuichồng calibration with patented AUTOCAL system

Affordable The QUV tester is economical to purchase and khổng lồ operate, because it uses:

low cost, long lifefluorescent UV lampsordinary tap water for condensation

Models (see also Features Tab)

QUV/basic: UV và condensation (no irradiance control)QUV/se: UV, condensation và SOLAR EYE irradiance controlQUV/spray: UV, condensation, SOLAR EYE irradiance control & water sprayQUV/cw: cool White visible light, condensation andSOLAR EYE irradiance control

SeeLU-0819 - QUV Specifications or the Features Tab for comparative capabilities.

Features

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 và a condensation system for moisture simulation. The Mã Sản Phẩm, however, does not include the SOLAR EYE irradiance control. Consequently, the light intensity cannot be adjusted or calibrated. This means the QUV/basic testercannot be used for high irradiance testing. In addition, periodiclamp replacement & repositioning is required.Q-Lab recommends the QUV/basic tester for comparative sầu exposures where the demo specimens và the control specimens are exposed at the same time, in the same tester.Model QUV/seThe most popular QUV modelfeatures the SOLAR EYE Irradiance Control, for precise maintenance of UV light intensity. The QUV/se tester uses a proven condensation mechanism lớn simulate outdoor moisture attaông chồng.The SOLAR EYE system is a precision control system that automatically maintains light intensity through a feedbaông chồng loop. The controller monitors UV intensity và compensates for lamp aging và variability by adjusting power lớn the lamps. The SOLAR EYE system provides:

Controlled irradianceLongerlamp lifeFaster resultsMore reproducible and repeatable testingISO calibration

For more information on the benefits of the SOLAR EYE irradiance control system, seeLU-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 shoông xã. Longer periods can be used lớn achieve sầu 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 fluorescentlamps for indoor photostability testing. To reproduce theseindoor light conditions, the QUV/cw uses ordinarycool trắng fluorescent lamps. Ithas a SOLAR EYE irradiance control system that monitors and controls visible light output, rather than UV. SeeLU-0823 - QUV/cw Summaryfor more information.Temperature ControlAll QUV testers precisely control temperature to lớn enhance accuracy & accelerate kiểm tra 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 lớn control temperature is essential during UV exposure.

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Versatile Specimen MountingStandard specimen holders easily adjust for any thickness up khổng lồ 20mm (3/4") và allow fast, snap-action specimen mounting. Retaining rings provide positive hold-down và vày not require that demo specimens be cut to lớn cthảm bại tolerance. In addition, custom holders are available for mounting various products, such as lenses,larger specimens,và 3-D components. See the accessories tab or ourspecimen mounting page for more information.Controls và Optional SoftwareDesigned to lớn be both functional and easy lớn use, the QUV controller 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.For unique systems that require documented proof of test conditions, every QUV tester is equipped with an Ethernet connection. Optional “Virtual Strip Chart” PC software allows the user to lớn automatically record exposure conditions & directly transfer data from the QUV tester to a Windows-based computer. This data can also be emailed directly khổng lồ Q-Lab"s technical support desk for expert troubleshooting và diagnostics.

Lamps

QUV Lamps Fluorescent UV lamps are inherently more stable than other types of lamps, including xenon arc lamps. The spectral power distribution (SPD) does not change with lamp aging, even up lớn 5,000 hours. This gives more reproducible thử nghiệm results, fewer lamp changes, và lower operational costs.Q-Lab produces more UV lamps than the rest of the weathering industry combined. Q-Lab"s lamps are specially engineered to our own proprietary specifications, based on our 40 years of experience with fluorescent UV công nghệ. We have sầu the most stringent chất lượng control testing in the industry. The result is that the QUV tester providesthe mostconsistent, stable spectrum, year after year.Several different types of UV lamps are available for different applications, which are listed below. SeeLU-8160 - A Choice of Lamps for QUV và LU-0823 - QUV/cw Summaryfor more specific application guidelinesUVA-340 Lamps The QUV tester’s UVA-340 lamps give the best simulation of sunlight in the critical short wavelength region from 365 nm down khổng lồ the solar cut-off of 295 nm. See LU-8052 - SPD for QUV UVA-340.UVA-351 Lamps The QUV tester’s UVA-351 lamps simulate the UV portion of sunlight filtered through window glass. It is most useful for interior applications, fortesting of some inks và for polymer damage that can occur in an environment near a window. See LU-8053 - SPD for QUV UVA-351.UVB-313 Lamps The QUV tester’s UVB-313 lamps maximize acceleration utilizing short-wave UV that is more severe than the UV normally found at the earth’s surface. Consequently, these lamps may produce unrealistically severe results for some materials. UVB-313 lamps are most useful for QC và R&D applications, or for testing very durable materials. See LU-8051 - SPD for QUV UVB-313EL.QFS-40 Lamps Also known as FS-40 or F40 UVB, this is the original QUV lamp. FS-40 lamps are still specified imãng cầu few legacyautomotive chạy thử methods. QFS-40 lamps should only be used in the QUV/basic tester. See LU-8050 - SPD for QUV QFS-40.Cool White Lamps The QUV tester’s cool white lamps (used only in Mã Sản Phẩm QUV/cw) effectively reproduce và accelerate indoor lighting conditions encountered in office và commercial environments as well as retail display lighting. See LU-8049 - SPD for QUV/cw.

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