Overview
HZAOC GDJS-225A 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, and can also 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.
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 equipped with 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 the steam boiler electric heating humidification method, and is equipped with water level control and dry burning prevention devices.
7. The control system adopts LCD Touchscreen temperature and humidity controller, equipped with PT100 Temperature Sensor, solid state relay zero-crossing trigger control heating output.
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 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 controls the solid state relay through the PID signal to adjust the heating and humidification to achieve accurate temperature and humidity change simulation.
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 power supply and lighting through the operation panel.
3. Set the required temperature and humidity parameters, including Temperature range -20~ 150 ℃ and Humidity Control Range 30~ 98% R.H.
4. Start the circulating fan to ensure that the heating and humidification systems start normally.
5. Place the sample in the studio and close the door to ensure sealing.
6. Monitor temperature and humidity fluctuations and uniformity to ensure compliance with test requirements.
7. After the test is completed, turn off the device and disconnect the power.
Notice
• Power frequency meets AC380V requirements to avoid phase loss or phase sequence errors.
• Check whether the fan is normal before starting to prevent overload from causing the heating and humidification system to fail to start.
• When using the test hole, make sure that the stopper sealing is good to maintain the insulation performance.
• Regularly check over-temperature protectors and safety devices to ensure their reliability.
• Avoid dry burning of the heater and pay attention to the working status of the water level control device.
• Pay attention to solid state relays and Sensors during maintenance to prevent the control accuracy from declining.
