Square Type Accelerated Weathering Chamber ASTMG53-77 UV Light Test

Best Price Square Type UV Accelerated Weathering Chamber ASTMG53-77 UV Light Test

Equipment Summary:

This testing chamber can simulate the harm caused by sunlight, rain, and dew. UV uses fluorescent ultraviolet UV lamps to simulate the effect of sunlight, and uses condensed moisture to simulate rain and dew. The tested materials are exposed to light and moisture at a certain temperature. Test in alternate cyclic programs. UV can reproduce the hazards that occur outdoors in months to years in a few days or weeks. UV test data can help you choose new materials and evaluate how changes in formulations affect the durability of new products.

Test Conditions:

1. The test sample fixing device is on the test rack, facing the fluorescent lamp. When the sample does not fill the sample rack, it is necessary to fill the sample rack with a blackboard to keep the inner wall of the test box closed.

2. Test temperature. Three temperatures of 50, 60, 70°C can be used for illumination, and 60°C is preferred; the temperature in the condensation stage is 50°C, and the temperature tolerance uniformity is ±2.

3. The cycle of each condensation of illumination can choose 4H illumination, 4H condensation or 8H illumination, 4H condensation two cycles.

After the first 400-450 hours of light, each row of tubes needs to be replaced with a fluorescent lamp, and other tubes should compensate for the loss caused by the aging of the tubes according to the lamp cycle and replacement method. This mode of operation ensures that the service life of each lamp tube is between 1600 and 1800H.

4.When replacing the lamp, the water pan should be wiped dry and cleaned to avoid the formation of scale.

1. UV Fluorescent Lamps

Installation of the lamp: UV lamps are fragile products, so the product is packaged separately at the factory, and should be installed with special care to avoid unnecessary losses. Installation should be lifted after the equipment power off the test chamber cover and both sides of the lamp replacement port, the UV fluorescent lamp will be inserted into the right seal, and then push the lamp will be inserted into the other side of the seal, and finally adjust the two ends of the lamp sealing cap, installed on the lamp power supply connector. Pay attention to the cleanliness of the surface of the lamp used, in order to prevent the influence of the irradiance of the lamp, such as pollution, the application of alcohol wipe the surface. Spare lamps should be stored in a ventilated and dry environment without corrosion.

2. Temperature Control System

The temperature control system consists of black standard thermometer, heater, fan, intelligent program regulator and other actuators, using BTHC temperature control mode, so that hot air is blown into the test chamber, so that the test temperature in the box to achieve stability.

3. Humidity Supply System

Humidity supply system consists of water tank, humidification system and other components, through the moisture condensation mechanism, so that the exposed surface of the specimen condensation wet, simulated rain, high humidity, condensation and sunlight (UV) dark synergistic action to create the best test environment.

4. Specimen Carrying Device

Equipment specimen bearing device is located on the UV lamp uniform radiation surface, made of stainless steel plate perforation

5. Protection System

Equipment with water shortage, anti-dry burning, over-temperature, short circuit, overload and other protection systems, respectively, located in the electric control panel and electric control cabinet. After entering the alarm state, the power supply of the working system of the equipment will be automatically cut off, so that the equipment will stop running, and an acoustic prompt will be issued to ensure the safety of equipment and personal.