Overview
HZAOC GDJS-50E 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, 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.
3. 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.
4. The side of the box is equipped with φ 50mm test hole with silicone rubber stopper, which has both thermal insulation efficiency.
5. The heater adopts a porcelain frame nickel-chrome wire electric heater, which has little thermal inertia, long service life, and stable and reliable control.
6. The humidification system adopts steam boiler electric heating and humidification method, armored electric heating tube, with water level control and anti-dry burning device.
7. 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.
8. 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.
9. Equipped with independent over-temperature protectors and interlocking devices to ensure the safety of the equipment.
Principle
The test chamber realizes the circulation mode of upper air supply and lower air return through the evaporator, electric heater, humidifier, fan and other equipment in the air conditioning cabinet, and controls the temperature and humidity in the working room. The temperature transducer is placed in a trend, and the meter outputs a controllable pulse duty cycle PID signal. The heating and humidification system is controlled by a solid state relay to simulate 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 device through the power button on the operation panel.
3. Use the LCD Touchscreen temperature and humidity controller to set the required temperature and humidity parameters.
4. Start the circulating fan to ensure that the interlock allows the heating and humidification system to operate.
5. Monitor the operating status of the equipment and observe the fault indicator.
6. After the test is complete, turn off the heating and humidification system, and then turn off the power.
Notice
• Power frequency meets AC380V requirements to avoid phase loss or phase sequence errors.
• Before starting the heating and humidification system, confirm that the circulating fan has been started normally and is not overloaded.
• Regularly check the water level control device and anti-dry burning device to prevent the heater from dry burning.
• Pay attention to observe the status of the over-temperature protector to ensure that the heating power can be reliably disconnected when the main controller fails.
• When using the test hole, make sure that the stopper sealing is good to maintain the insulation performance.
• Avoid opening and closing the door frequently when the equipment is running to keep the temperature and humidity stable.
• Disconnect the power supply during maintenance to prevent the risk of leakage.
