Overview
HZAOC GDJS-225C 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, the size is 250 × 260mm, 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 porcelain frame nickel-chrome wire electric heater, which has little thermal inertia and long life. It is controlled by solid-state relay PID.
5. The humidification system adopts steam boiler electric heating method, armored electric heating tube, PID control, water level control and anti-dry burning device.
6. The control system adopts LCD Touchscreen temperature and humidity controller, Sensor is PT100, and the heating output adopts solid state relay zero-crossing trigger to improve the 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 realizes temperature and humidity control through evaporators, electric heaters, humidifiers, fans and other equipment in the air conditioning cabinet. The temperature transducer is placed in a trend, and the air supply method is upper supply air and lower return air to ensure uniform temperature and humidity in the working room. The heating system adopts PID control solid state relays, and the humidification system is electrically heated by a steam boiler, which is monitored and protected by the control system in real time.
Applications
Electrical and electronic products, components, parts and materials moisture resistance test, high and low temperature environmental 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 device through the operation panel and check the function buttons and indicator lights.
3. Set the required temperature and humidity parameters and adjust them using the LCD Touchscreen controller.
4. Start the circulating fan to ensure that the heating and humidification systems start normally.
5. Place the sample in the studio, close the door and check the sealing.
6. Monitor the operation process to observe temperature and humidity fluctuations and uniformity.
7. After the test is completed, turn off the device and disconnect the power.
Notice
• Power frequency check meets AC380V requirements before use.
• Make sure the circulating fan starts normally, otherwise the heating and humidification system will not work.
• Regularly check safety protection devices, such as over-temperature protectors and interlocking devices.
• Avoid dry burning of the heater and pay attention to the water level control of the humidification system.
• The test hole stopper should be well sealed to prevent temperature and humidity leakage.
• Observation window heating wires and lighting are only used when needed to extend lifespan.
Do not open the door frequently when the equipment is running, so as not to affect the temperature and humidity stability.
