Overview
HZAOC GDJS-50D 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, 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, and the stopper is silicone rubber low foam material, which has both high and low temperature resistance and thermal insulation efficiency.
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 the steam boiler electric heating humidification method, and is equipped with a water level control device and a dry burning prevention 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 safe operation 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
Test of moisture resistance of electrical and electronic products, components, parts and materials, storage, transportation and use adaptability test in high and low temperature environment
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 whether the function buttons and indicator lights are normal.
3. Set the required temperature and humidity parameters, Temperature range is -60~ 150 ℃, Humidity Control Range is 30~ 98% R.H.
4. Start the circulating fan to ensure that the heating and humidification systems start normally.
5. Put the sample in the studio, close the door and make sure the sealing is good.
6. Monitor temperature and humidity fluctuations and uniformity, Temperature Fluctuation ≤ +/- 0.5 ℃, Temperature Uniformity ≤ +/- 2 ℃, Humidity Uniformity is + 2% -3% R.H, Humidity Fluctuation is +/- 2% R.H.
7. After the test is completed, turn off the equipment and remove the specimen.
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 the stopper is installed tightly to maintain the insulation performance.
• Regularly check the water level control device and anti-dry burning device to prevent the humidification system from malfunctioning.
• Pay attention to the heating wire and lighting function of the observation window to ensure normal use in a low temperature environment.
• In case of over-temperature or Miscellaneous failure, immediately check whether the independent over-temperature protector is operating.
• Disconnect the power supply during maintenance to avoid the risk of leakage.
