Temperature range:RT+10℃~70℃

2. Humidity range: ≥ 90% RH

3. Temperature uniformity: ± 1 ℃

4. Temperature fluctuation: ± 0.5 ℃

5. Center distance inside the lamp tube: 70mm

6. Center distance between test sample and lamp tube: 50 ± 3mm

7. Irradiance: adjustable within 1.0W/m2

8. Adjustable light, condensation, and spray test cycles

9. Lamp tube: L=1200/40W, 8 pieces (A/B service life of over 1600h)

10. Controller: Color touch screen program controller or RKC intelligent controller

11. Temperature control method: PID self-tuning SSR control

12. Standard specimen size: 75 × 290mm (special specifications need to be specified in the contract)

13. Sink depth: 25mm automatic control

14. Effective irradiation area: 900 × 210mm

15. Ultraviolet wavelength: A range is 315-400nm; B range is 280-315nm

16. Test time: 0~999H (adjustable)

17. Radiation blackboard temperature: 50 ℃~70 ℃

18. Standard sample rack: 24 sets

19. The unit has automatic sprinkler function

20. Compliant with standards: GB/T16422.3-1997, GB/T 14522-93ASTM G 154, ISO 4892-1 ISO 11507 ASTMD 4329 GB18244-2000 JTG E50-2006 GB 16777-2008

（1） Light source:

1. The light source adopts 8 imported ultraviolet fluorescent lamps with a rated power of 40W as the light source. Ultraviolet fluorescent tubes, distributed in machinesOn both sides, each side4 pieces. There are UVA-340 or UVB313 light sources available for users to choose from and configure.

2. The UVA-340 lamp is ideal for simulating the critical shortwave region of sunlight from 365nm to the cutoff point of 295nm, with a peak value of 340nm. The UVA-340 lamp is particularly useful for comparing different formula materials and is recommended for testing most products such as plastics, textiles, coatings, pigments, and UV stabilizers, as well as for correlation testing of outdoor test results. Using UVA-340 lamps is equivalent to being exposed to sunlight at noon in summer.

3. The UVB-313 lamp can emit short wavelength sunlight that can be obtained on the surface of the Earth, providing fast test results. Widely usedThe quality control and research and development departments conduct rapid and efficient testing of materials such as building materials and outdoor coatings. Its luminescence spectrum is mainly concentrated inNear the wavelength of 313nm.

4.Due to the gradual decay of fluorescent light energy output over time, in order to reduce the impact of light energy decay on the experiment, this test chamber uses everyAt 1/4 of the lifespan of a fluorescent lamp, a new lamp tube is used to replace an old one, so that the ultraviolet light source is always composed of the new and old lamps, resulting in a constant output of light energy.

（2） Electrical control:

1. The blackboard humidity is controlled by a controller, while imported electronic components are mainly used for the rest.

2. Uniformity of irradiance: ≤ 4% (at the surface of the sample)

3. Blackboard humidity monitoring: Standard Pt-100 blackboard humidity sensor is used to control the surface temperature of the tested samples.

4. Blackboard temperature setting range: BPT 40-80 ℃; BST40-80 ℃, but the actual temperature protection device inside the machine has a maximum temperature limit of 80 ℃+10%. Blackboard temperature control accuracy:+2.0 ℃

5. Monitoring of sink humidity: During the cyclic testing process, there is a testing section that involves the dark condensation process, which requires the box to generate saturated water vapor at a relatively high temperature. When the water vapor encounters a relatively cold surface of the sample, it will condense dew on the surface of the sample.

a、 The sink is located at the bottom of the box and is equipped with an electric heater.

b、Water tank temperature control range:40~60℃

c、Test box equipped with time controller, range0~9999H， It has the function of accumulating time and power outage memory.

d、 Safety protection device:

uProtective door lock: If the lamp is on and the door of the box is opened, the machine will automatically cut off the power supply to the lamp and enter a balanced cooling state to prevent harm to the human body. The safety door lock is in compliance withIEC 047-5-1 Safety protection requirements.

Temperature over temperature protection inside the box: When the temperature inside the box exceeds 80 ℃+10%, the machine will automatically cut off the power supply to the lamp and heater, and enter a balanced cooling state.

The low water level alarm in the sink prevents the heater from burning out.

UVA-340 lamp tube

0.68W/m²exist340nm is equivalent to noon sunlight

l 1.38W/ m²340nm is equivalent to twice the size of sunlight

l 0.35w/m²exist340nm * optimal average value (equivalent to sunlight in March/September) or low UV light

7. UVB-313 lamp tube

l 0.67w/m²exist310nm is the standard

l 1.23w/m²exist310nm is a very fast test.

l 0.48w/m²exist310nm can extend the usage time of the lamp tube when used for testing UVB-313 lamps that comply with the SAEJ2020 standard.