Overview
HZAOC GDJS-500B 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, the observation window is a multi-layer conductive film tempered hollow Glass, 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 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 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 realize the precise adjustment 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. 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, Temperature range -30~ 150 ℃, 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, Temperature Fluctuation ≤ +/- 0.5 ℃, Temperature Uniformity ≤ +/- 2 ℃.
7. After the test is completed, turn off the device and disconnect the power.
Notice
• Power frequency meets AC380V requirements to avoid voltage instability.
• Check whether the safety protection device, such as phase loss protection, over-temperature protection, etc. are normal before operation.
• Run the circulating fan first when starting, and then start the heating and humidification system to prevent equipment damage.
• Plug the test hole tightly in time after use to maintain thermal insulation efficiency.
• Avoid dry burning of the heater and pay attention to the status of the water level control device.
• Maintain Sensors and control systems regularly to ensure accuracy.
• Do not open the door frequently when the equipment is running, so as not to affect the stability of temperature and humidity.
