Compared with BGD 865, BGD 866adds spray function. Spray function is used to simulate rain and humidity whenthe material is used at outdoor. Furthermore, operator can set the cumulativeenergy （Total irradiance energy）obtained by sample to stop a testprocedure. Operator canset all required test parameters （Irradiance, test time, BPT etc）through the touch screen, and can checkits running status at any time. All running parameters can be exported tocomputer through the USB interface. Test Principle Artificial weathering of coatings orexposure of coatings to filtered xenon-arc radiation is carried out in order toobtain the degree of change in a selected property after a certain radiantexposure H, and/or the radiant exposure which is required to produce a certaindegree of ageing. The properties selected for monitoring should preferably bethose which are important for the practical use of the coatings. The propertiesof the coatingsexposed are compared which those of unexposed coating preparedfrom the samecoating materials at the same time and in the same way (controlspecimens)or with those of coatings exposed at the same time whose behaviorduring testing in exposure apparatus is already known (reference specimens). XenonLamp lightcan emulate the effect of sunshine,while water spray system canemulate the effects of rain and dew. During the test, radiation energy andtemperature are controllable. A typical test cycle generally carries out understrong irradiation of Xenon light and periodic precipitation. These testsgenerally appliedin the fields of paint and coatings,automotive industry,plastic, wood, glue,etc… BGD seriesXenon Light Accelerated Weathering Cabinets（here in after referred as B-SUN）use Xenon lamps as artificial lightsource, and canmodify the full spectrum sun light. Controlling the temperature,humidity .Its inner temperature and humidity can be properly controlledtoobtain the periodicprecipitation on the sample for fully evaluating the damagedfactor causedby sunlight, moisture and temperature (materials aging phenomenonincludes fading, disluster, intensity reduction, racking, flaking, chalking,and oxidation). B-SUN BGD 866 B-SUN is an economic xenon lightaccelerated weathering tester. It is equipped with a piece low powerair-cooling xenon lamp to produce enough big irradiance energy in a smallspace, on the other hand, it adopts a special catoptrical system to ensureevery exposure samples get the homogeneous irradiance distribution. It also cansimulate influence that water or other humidity of environment to outdoormaterial. A product exposedoutdoors to direct sunlight experiences maximum light intensity for only a fewhours each day. B-SUN can subject test specimens to the equivalent ofnoon summer sunlight for 24 hours a day, every day. Consequently, specimendegradation can be highly accelerated. For B-SUN, there are three opticaldifferent filters used to get different spectra for variousapplications. ① Daylight Filters：used to simulate noon summer directsunlight, they can offer the best correlation to the natural exposures for mostfact applications. Materials which are typically used outdoors like exteriorcoatings or outdoor rubbers should be tested using Daylight Filters. This testis called as “Artificial Weathering Test” ② Window Glass Filter：Using 3mm thickness window glass toproduce spectra equivalent to sunlight coming through normal window glass. Thisspectrum can also simulate some indoor lighting such as the harsh lightingfound in a typical commercial or office environment. They are used for indoormaterials such as printing materials or textiles. This test is called as“Exposureto artificial radiation Test” ③ Extended UVfilters：These filters allow excess UV, below the normal cut-on ofnatural sunlight, used to simulate sunlight which doesn’t come throughatmosphere .They are used to produce faster or more severe test results. Thistest is called as “Artificial Accelerated Weathering Test” For many customers, they are affordable: B-SUN Tester’s low purchase price, lowlamp prices and low operating costs create a break through in theprice/performance equation. Now even the smallest lab can afford xenonarctesting. Simple,Affordable Big capacity for 9 standard samples Characters

◆The test procedures can be programmed freely; and upto 16 predetermined procedures can be saved in one time. Every procedureincludes up to 10 segments setting data.

◆ Can set the cumulative energy （total irradiance energy）obtained by sample to finish a testprocedure.

◆ With spray function, can set spray time and sprayinterval time.

◆The xenon light source correspond with internationalstandards; ensure reproducibility and comparability of testing results.

◆ Irradiance energy can be accurately controlled.The "Sun Eye" control system can automaticallycompensate the change of light intensity caused by ageing or other factors. ◆ Users can easily calibrate and adjust the irradiance orthe blackboard temperature by themselves.

◆ With High precision Pt100 Temperaturesensor. Blackboard temperature is auto-controlled during the whole process

◆ Alarm function for protection：Over temperature, over heating load,bigerror for irradiance, auto shut-down protection when opening door.

◆ Touch screen and user-friendly operation interface allowoperator to set the test parameters and monitor all the test processeasily.

◆ Specimen mounting and evaluation is fast and easy Withunique slide-out specimen tray

◆ Real-time data can be collected and recorded. Theincidental USB connector allow users to copy the test data into a USB drive,achieving unattended operation. B-SUNCalibration Optional Xenon lamps Main Technical Parameters

■ Xenon Lamp：one 1.8KW xenon lamp （imported from America or Chinese lamp）

■ Fliter：Daylight filter （Also can choose extended UV filter orwindow glass filter）

■ Lamp Lifetime：Near 1,500 hours

■ Exposure Area：1,000 cm2 (can put 9 standard samples150×70mm) Chinese lamp：30W/m2～100W/m2（300nm～400nm）or 0.3 W/m2～0.8 W/m2（@ 340nm）or 0.5 W/m2～1.5 W/m2（@ 420nm） American lamp：50W/m2～120W/m2（300nm～400nm）or 0.3 W/m2～1.0 W/m2（@ 340nm）or 0.5 W/m2～1.8 W/m2（@ 420nm）

■ AdjustableBlack Board Temperature Range：RT+30℃～90℃（Depends on environment temperature andsetting irradiance value） ■ Controllingirradiance point：340nm or 420nm or 300nm～400nm（show at the same time）

■ InteriorMaterial of Chamber：Stainless steel -SUS 304 material

■ ExteriorMaterial of Chamber：Powder coating

■ Overall Size：925×600×1050mm（L×W×H）

■ NetWeight：140KG（180KG Gross weight）

■ Power Supply：220V 50/60HZ；Max. Current 16A；Max.Power 2.6 KW

■ Ordering Information: BGD 866---SmallXenon Test Chamber（Equipped with Chinese lamp） BGD866/A---Small Xenon Test Chamber（Equipped with American lamp） BGD 8155---XenonLamps （1.8 KW） BGD 8156---American Xenon Lamps （1.8 KW） BGD 8140---XenonCalibration Radiometer（340nm） BGD 8141---XenonCalibration Radiometer（420nm） BGD 8142---XenonCalibration Radiometer（300nm～400nm） BGD 8170---Pure Water Machine（50L/h）