UV accelerated weather resistance test chamber

Technical parameters of UV accelerated weather resistance test chamber:

1Equipment usage:

This experimental equipment simulates the damage caused by solar ultraviolet light, and conducts weather resistance testing on the tested material by exposing it to controlled high temperature light. It uses ultraviolet lamps to simulate the radiation effect of sunlight, and simulates dew and rain through condensation and water spraying. In just a few days or weeks, the ultraviolet irradiation equipment can withstand the damage that takes months or even years to occur outdoors, including fading, color changes, loss of luster, powdering, cracking, wrinkling, foaming, brittleness, strength reduction, oxidation, etc. Its test results can be used to select new materials, improve existing materials, or evaluate changes in material formulations.

2Product Introduction:

2.1 Product Name:UV accelerated weathering test chamber

2.2 Product Model:AB-UVA

2.3 Sample restriction conditions:

• This experimental equipment prohibits:
• Testing and storage of samples of flammable, explosive, and volatile substances
• Testing and storage of corrosive substance samples
• Testing or storage of biological samples
• Testing and Storage of Strong Electromagnetic Emission Source Samples

3. Technical indicators:

3.1 Volume and size：

• studiosize（mm）：1140640 x 690 (D width x W depth x H height)
• Outer box size（mm）：1300×700×1630(D width x W depth x H height)

3.2 UV lamp tube parameters:

• Lamp model: UVA-340 (315-400nm), this plan requires 8 lamps.
• Lamp brand: Philips lamp
• Center distance between lamp tubes: 70mm
• Distance between test rack and lamp tube: Plate type base frame test board (adjustable up and down)
• Radiation intensity: high-power output of the lamp tube

3.3 Temperature and humidity indicators:

• Temperature range:Room temperature+10~70 ℃ adjustable
• Humidity range:≥90%RH
• Temperature fluctuation: ± 3 ℃
• temperature resolution：0.1℃

3.4 Blackboard thermometer:

• Measurement range: 45-80 ℃
• Tolerance: ± 3 ℃

3.5 temperature control：PIDSelf setting temperature control method

3.6 Technical Features：

• Provide comprehensive and detailed real-time monitoring and curve recording of important experimental parameters such as irradiance, temperature, and time (controller with recorder function), and generate reports and print curves through the computer.
• Radiation/condensation/water spray tests can be conducted separately, or any combination of radiation/condensation/water spray tests can be programmed.
• Adopting the Songhua industrial grade 7-inch true color touch screen control system, it has good stability, monitoring, operability, and maintainability.
• Provide lifespan reference for imported ultraviolet lamps with expensive materials (lamps are consumables with a lifespan of about 1200 hours), facilitating users to confirm the replacement time of lamps and saving usage costs.
• Adopting automated water supply and drainage design, combined with high cost high-power mercury water, to ensure the flow rate and uniformity of water spray.
• Most of the main components are branded, with a small portion using domestic brands, which improves the safety and reliability of the product. (Please refer to the attached list of main accessories for details.)
• The installation and wiring of the electrical part of the equipment shall be carried out in accordance with electrical standards.

*Professional after-sales service.

3.7 Compliant with standards:

• GB/T14552-2008In the "National Standard of the People's Republic of China - Plastic, Coating, and Rubber Materials for Mechanical Industry Products - Accelerated Test Method for Artificial Climate", section a is the fluorescent ultraviolet/condensation test method.
• GB/T16422.3-1997 GB/T16585-96Related analysis methods.
• GB/T16585-1996National Standard of the People's Republic of China - Test Method for Artificial Climate Aging of Vulcanized Rubber (Fluorescent UV Lamp).
• GB/T16422.3-1997Design and manufacturing standards for corresponding standard clauses such as "Plastic Laboratory Light Source Exposure Test Method".
• Compliant with current UV aging test standards such as ASTM D4329, ISO 4892-3, ISO 11507, SAE J2020, etc.
• Other types of standards are not listed in detail. If necessary, please confirm with our technical department.

2、 Functional Area Introduction:

1Radiation system (simulated sunlight):

• light source8Imported ultraviolet fluorescent lamp (Philips) with a rated power of 60W, available in UVA-340 and UVB-313 light sources for users to choose from. Like other lamps, the aging of QUV lamps can lead to a decrease in lamp outputsunglassesThe QUV of the control system is compensated using the method of rotating positions. This system can be used for many application standards, but it has inherent limitations. This method of rotating positions cannot compensate for the impact caused by different batches of lamps or different surrounding environments.
• UVB-313:The wavelength range is280nmBetween 315nm. UVB-313 ratioUVA-340The material aging caused by light tubes is faster, but their shorter wavelengths than the cut-off point of sunlight may produce unrealistic results for many materials.
• UV cycle temperature control:

UVThe components of the circulatory system include a blower, an air heater, an air distribution system, and a blackboard temperature sensor.

1. Blower: Installed at the air duct of the lower box of the equipment, the blower works continuously throughout the entire UV cycle.
2. Air heater: Installed in the air duct above the blower, it is used to heat the air blown out by the blower when needed.
3. Air distribution system: The air blown out by the blower enters the laboratory through the air duct at the center of the water tray, and is then guided by the air

Guide to fill the entire laboratory.

2Condensation system (simulated dew):

QUVThe condensation system is essentially the evaporation of water vapor confined within the experimental chamber by the sample of the experimental chamber. During the condensation cycle, water is heated by the heating element in the water tray, and the test chamber is filled with water vapor, reaching equilibrium at 100% humidity. The water vapor continuously condenses on the sample and then flows back into the water tray.

3. Sprinkler system (simulating rainwater):

QUVThe sprinkler system consists of a high-power water pump, four nozzles, connecting pipes, control valves, and a drainage section. The nozzle is installed between the lamp tubes, and in the spray cycle, water is sprayed onto the sample to produce thermal shock or erosion effects.

4Structural characteristics of the box:

• The box is made with full CNC technology, with smooth process lines and a beautiful and elegant appearance
• The whole box is made of SUS304 stainless steel plate
• Stainless steel perforated sample holder
• Door type opening devices are used at all openings of the test box casing, making it easy to open
• For ease of movement, casters are installed at the bottom of the instrument, and the position of the testing machine is fixed with a U-shaped ring after fixation

5Control panel：（The specific buttons and indicator lights depend on the actual configuration）

• Youyi7Inch programmable display screen
• RS232communication port
• operation button
• Alarm indicator light
• Irradiation timer

6Laboratory：

• UVLamp tube, blackboard temperature sensor.
• Heating and humidification device
• Inlet and outlet, sprinkler installation
• 7Mechanical room:
• Inlet and outlet system
• Spray system device
• Condensation system device
• Blower, air heater
• alarm device

8Distribution control cabinet:

• Distribution board, main power circuit breaker, cooling fan, etc
• 9Heater:
• Heater material: stainless steel304Fin heat dissipation electric heating tube
• Heater control method: contactless equal period pulse width modulation,SSR(Solid state relay)

10Humidifier:

• Humidification method: shallow water basin heating
• Humidifier material: stainless steel armor
• Humidifier control method: contactless equal period pulse width modulation,SSR(Solid state relay)
• Humidifier device: water level control device, heater anti dry burning device

11Electrical control system:

• Controller（Model:Youyi
• monitor: 7Inch true color touch screen
• Operation mode:Program mode, fixed value mode
• Setting method:Chinese menu and touchscreen input
• Program capacity:Memory program group30Group,

Each program group contains program segments30Segment, all loop, many999return

• Blackboard temperature monitoring: Standard Pt-100 blackboard temperature sensor is used to accurately control the surface temperature of the sample during the testing process.
• Auxiliary functions: fault alarm and cause, processing prompt function, power-off protection function, timing function(Automatic start and automatic stop operation)Self diagnostic function.