Overview
HZAOC GDJS-150B 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, as well as the adaptability test of 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 a multi-layer conductive film tempered hollow Glass, with built-in heating wire anti-frost and lighting.
3. The side of the box is equipped with φ 50mm test hole, and the stopper is silicone rubber low foam material, 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 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, 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 safe operation of the equipment.
Principle
The test chamber realizes temperature and humidity control through evaporators, electric heaters, humidifiers, fans and other equipment in the air conditioning cabinet. The heating system uses PID control signals to adjust through solid state relays, and the humidification system is electrically heated by steam boilers, and the pulse width is controlled by PID. The air supply method is upper air supply and lower return air, and the temperature transducer is placed in a trend to ensure uniform distribution of temperature and humidity.
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. Turn on the power supply and check that the Power frequency 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 heating and humidification systems start normally.
4. Place the sample in the studio, close the door and ensure sealing.
5. Monitor temperature and humidity changes and detect them through observation windows and test holes.
6. After the test is completed, turn off the heating and humidification system and remove the sample.
Notice
• Check the power supply phase sequence and voltage before operation to avoid phase loss or phase sequence errors.
• Make sure the circulating fan starts normally, otherwise the heating and humidification system will not work.
• Regularly check the water level control device and anti-dry burning device to prevent the heater from dry burning.
• When using the test hole, make sure that the stopper sealing is good to maintain the insulation performance.
• Use the observation window heating wire and lighting only when needed, and avoid opening it for a long time.
• In the event of over-temperature or Miscellaneous failure, the system will automatically power off protection, and the cause needs to be investigated in time.
