Overview
HZAOC GDJS-500A high and low temperature alternating damping heat test chamber is suitable for inspecting the moisture resistance of electrical and electronic products, components, parts and materials under different temperature and humidity conditions, and can be used as an adaptability test for storage, transportation and use in high and low temperature environments.
Features
1. The box adopts the overall structure, the inner side is 1.0mm SUS304B stainless steel plate, the outer side is 1.0mm Cold rolled steel plate sprayed, and the thermal insulation material is ultra-fine Glass thermal insulation cotton.
2. The door sealing is made of double-decked silicone rubber sealing material, and the observation window is made of multi-layer conductive film tempered hollow Glass, with built-in special heating wire to prevent frost and lighting.
3. The side of the box is equipped with φ 50mm test hole with silicone rubber stopper, which has both high and low temperature resistance and thermal insulation efficiency.
4. The heater adopts a porcelain frame nickel-chrome wire electric heater, which has little thermal inertia, long service life, and stable and reliable control.
5. The humidification system adopts the steam boiler electric heating humidification method, and is equipped with water level control and dry burning prevention devices.
6. The control system adopts LCD Touchscreen temperature and humidity controller, equipped with PT100 Temperature Sensor, solid state relay zero-crossing trigger to improve control accuracy.
7. Safety protection measures include phase loss protection, phase sequence error protection, phase voltage uneven protection, fan overload protection, over-temperature power failure protection, leakage protection, etc.
8. Equipped with independent over-temperature protectors and interlocking devices to ensure the safety of equipment and samples.
Principle
The test chamber adjusts the temperature and humidity in the working room through the evaporator, electric heater, humidifier, fan and other equipment in the air conditioning cabinet. The temperature transducer is placed in a trend, and the control system controls the solid state relay through the PID signal to realize the precise adjustment of heating and humidification, simulating different environmental conditions.
Applications
Electrical and electronic products, components, parts and materials moisture resistance test, high and low temperature environment storage adaptability test, transportation adaptability test, use adaptability test
Standards
GB/T2423.3-2001、GB/T5170.5-96、GB/T10586-89
Steps
1. Connect the power supply and ensure that the voltage is AC380V.
2. Start the control system through the operation panel and set the required temperature and humidity parameters.
3. Start the circulating fan to ensure that the interlock allows the heating and humidification system to operate.
4. Place the sample in the studio, close the door and check the sealing.
5. Monitor temperature and humidity changes and observe or test through observation windows and test holes.
6. After the test is completed, turn off the heating, humidification, and fan systems and disconnect the power supply.
Notice
• Power frequency meets AC380V requirements to avoid phase loss or phase sequence errors.
• Check whether the fan is normal before starting to prevent overload from causing the heating and humidification system to fail to start.
• When using the test hole, make sure that the stopper sealing is good to maintain the insulation performance.
• Regularly check the water level control and anti-dry burning device to prevent damage to the humidifier.
• Pay attention to the status of the over-temperature protector to ensure the safety of the equipment when the main controller fails.
• Avoid touching high-temperature parts during operation to prevent burns.
