Overview
HZAOC GDJS-225B high and low temperature alternating damping heat test chamber is suitable for investigating the moisture resistance of electrical and electronic products, components, parts and materials under different temperature and humidity conditions, and can be used as a storage, transportation and use in high and low temperature environment adaptability test.
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, the observation window is a multi-layer conductive film tempered hollow Glass, and the built-in special heating wire is frost-proof and lighting.
3. The side of the box is equipped with φ 50mm test hole, the stopper is silicone rubber low foam material, high and low temperature resistance and thermal insulation.
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 steam boiler electric heating and humidification method, armored electric heating tube, with water level control and anti-dry burning device.
6. The control system adopts LCD Touchscreen Temperature and Humidity Controller, PT100 Temperature Sensor, Solid State Relay Zero 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 the equipment.
Principle
The test chamber adopts the upper air supply and lower air return mode to adjust the temperature and humidity 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 heating and humidification through PID signals and solid state relays to realize accurate simulation of temperature and humidity changes.
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. Open the door of the test chamber and place the test sample in the working room.
3. Close the door and make sure the sealing is good.
4. Set the required temperature and humidity parameters through the operation panel.
5. Start-up control system, including circulating fan, heating and humidification system.
6. Monitor the test process and observe changes in temperature and humidity.
7. After the test, shut down the system and remove the sample.
Notice
• Power frequency meets AC380V requirements to avoid voltage instability.
• Avoid blocking the air supply and returning to the trend when placing the sample.
• Regularly inspect sealing materials and heaters to prevent aging or damage.
• Before operation, confirm that the safety protection function is normal, such as an over-temperature protector.
• Pay attention to the water level during the use of the humidification system to prevent dry burning.
• Disconnect the power supply during maintenance to ensure safety.
