Overview
HZAOC GDJS-250D 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 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.
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, the stopper is silicone rubber low foam material, high and low temperature resistance and thermal insulation.
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, PT100 Temperature Sensor, Solid State Relay Zero Trigger to improve the 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 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 precisely controls the heating and humidification output through PID signals and solid state relays to achieve a stable temperature and humidity environment.
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 heating and humidification systems start normally.
5. Put the sample into the studio and close the door to ensure sealing.
6. Monitor the operation process and observe the fault indicator.
7. After the test is completed, turn off the heating and humidification system and stop the equipment from running.
Notice
• Power frequency meets AC380V requirements to avoid voltage instability.
• Check whether the circulating fan is normal before starting to prevent the heating and humidification system from failing 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 device and anti-dry burning device to avoid damage to the humidifier.
• Pay attention to the status of the over-temperature protector to ensure that the heating power can be safely disconnected in the event of a main controller failure.
• Avoid touching high-temperature parts during operation to prevent burns.
• Keep the observation window clean to ensure proper lighting and frost protection.
• Follow safety measures and deal with faults such as phase loss and phase sequence errors in a timely manner.
