The structure and characteristics of UV weathering tester

The UV aging tester adopts fluorescent UV lamp as the light source to accelerate the weathering test of materials by simulating the UV radiation and condensation in natural sunlight to obtain the results of material weathering. The structure and characteristics of the UV weathering tester have the following features:

 

 

Lamp installation: 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 right seal inserted, and then push the lamp will be right on the other side of the seal inserted, * then 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 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.

 

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 box, so that the test temperature in the box to achieve stability.

 

 

Humidity supply system consists of water tank, humidification system, etc., through the moisture condensation mechanism, so that the exposed surface of the specimen condensation wet, simulated rain, high humidity, condensation and synergy with the sun (UV) darkness to create a * good test environment.

 

 

The equipment control board is equipped with a JS20 type time relay, intelligent regulator to open when the test temperature reaches ± 3 ℃ range, (time timer is strictly prohibited to set to 0000, and should be set in the timer off state). Time control of equipment operation, improve the automation performance of the equipment.

 

 

The equipment specimen carrying device is located on the UV lamp uniform radiation surface, consisting of aluminum alloy cabinet base frame, which can carry a total of 22 pieces of standard specimens (75 mm × 150 mm × 1.5mm).

 

 

Equipment with water shortage, anti-dry burn, 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, automatically cut off the power supply of the equipment working system, so that the equipment stops running, and sound tips to ensure that the equipment and personal **.