Overview
HZAOC GDJW-800A low/high temperature test Chamber is suitable for the adaptability test of electrical, electronic products, components, parts and materials in high and low temperature environment storage, transportation and use, as well as temperature gradual change test, and stress screening test for electronic components. 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 spray, and the thermal insulation material is ultra-Glass fine thermal insulation cotton to ensure the stable operation of the equipment.
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, and the observation window is a multi-layer conductive film tempered hollow Glass, the size is 200 × 300mm, and the built-in special heating wire is anti-frosting and lighting.
3. The side of the box is equipped with φ 50mm test holes, and the stopper material is silicone rubber with low foaming, high and low temperature resistance and thermal insulation.
4. The heating device adopts porcelain frame nickel-chromium wire electric heating device, which has small thermal inertia, long life and stable and reliable control.
5. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant, Miscellaneous parts are imported brands.
6. Control system adopts High Accuracy Digital Temperature Controller, Sensor is PT100, heating output adopts solid state relay zero-crossing trigger to improve control accuracy.
7. Safety protection measures are provided, including phase loss protection, over-temperature protection, leakage protection, etc., and independent over-temperature protectors and interlocking devices are provided.
Principle
The low/high temperature test Chamber realizes temperature control through the heating system and the refrigeration system. The heating system adopts a porcelain frame nickel-chrome wire electric heating device, which is controlled by a solid-state relay by outputting a controllable pulse duty cycle PID signal from the meter; the refrigeration system adopts a French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant to ensure fast lifting, mild and stable operation. The temperature sensor is placed in a trend, and the air supply method is upper air supply and lower air return, which is accurately controlled by High Accuracy digital temperature controller and PT100 Sensor.
Applications
Electrical and electronic products, components, parts and materials storage, transportation and use adaptability test, temperature gradual change test, electronic components stress screening test
Standards
GB/T2423.1-2001、GB/T2423.2-2001、GB/T10592-2008、GB/T10589-1989、GB/T11158-1989、IEC68-2-1、IEC68-2-2
Steps
Connect the power supply to ensure that the voltage is AC380V +/- 10%, three-phase five-wire system.
2. Check the water source and use deionized water or purified water.
3. Turn on the power supply and lighting of the device, and set the temperature parameters and Timer Range through the operation panel.
4. Start the circulating fan to ensure that the refrigeration unit and heating system are started after normal operation.
5. Place the test sample in the studio, close the door, and start the test program.
6. Monitor temperature fluctuations and uniformity to ensure compliance with set requirements.
7. After the test is completed, turn off the heating and cooling system, remove the test sample, and turn off the power supply.
Notice
Equipment Ambient Temperature should be maintained at 5~ 28 ℃, Humidity ≤ 85% R.H.
• Power supply voltage must be AC380V +/- 10%, three-phase five-wire system to avoid phase loss or phase sequence errors.
• Use deionized water or purified water as a water source to prevent impurities from affecting equipment performance.
• Make sure the circulating fan is normal before starting, otherwise the refrigeration unit and heating system will not start.
• Safety protection devices such as over-temperature protectors, high voltage controls, etc. are checked regularly to ensure reliable operation.
• Avoid frosting in the observation window at low temperature, the built-in heating wire has been set, no additional operation is required.
Do not open the door frequently when the equipment is running, so as not to affect the temperature Stability and test results.
