Overview
HZAOC GDJW-500D low/high temperature test Chamber is suitable for the adaptability test of electrical and electronic products, components, parts and materials in high and low temperature environment storage, transportation and use, as well as temperature gradual change test. Stress screening test can also be carried out on electronic components.
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, with built-in special heating wire to prevent frost 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, which has both thermal insulation efficiency.
4. The heating device adopts porcelain frame nickel-chromium wire electric heating device, which has small thermal inertia, long service life and stable and reliable control.
5. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant.
6. Control system adopts High Accuracy Digital Temperature Controller and PT100 Temperature Sensor, accurate and stable control, long-term operation does not drift.
7. Safety protection measures are in place, including phase loss protection, over-temperature protection, and unit overload protection.
Principle
The test Chamber achieves temperature control through evaporators, electric heaters, humidifiers, fans and other equipment in the air conditioning cabinet. The heating system uses solid-state relays to control the nickel-chrome wire electric heating device of the porcelain frame, and the refrigeration system uses a fully enclosed Compressor unit to circulate air through the upper air supply and lower return air. The temperature sensor is placed in real-time monitoring of trends to ensure Temperature uniformity and Stability.
Applications
Electrical and electronic products, components, parts and materials adaptability test, 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 and water source, ensure that the voltage is AC380V +/- 10%, use deionized water or purified water.
2. Turn on the power switch and start the Control system.
3. Set the required Temperature range, heating rate, cooling rate and timing time through the operation panel.
4. Start the circulating fan to ensure that the heating or cooling system is started after normal operation.
5. Place the sample in the studio, close the door and ensure good sealing.
6. Monitor the operating status and check through observation windows and test holes.
7. After the test is completed, turn off the heating and cooling systems in sequence, and finally turn off the power supply.
Notice
Equipment Ambient Temperature should be maintained at 5~ 28 ℃, Humidity ≤ 85% R.H.
• Power supply must comply with three-phase five-wire system, voltage AC380V +/- 10%.
• Use deionized water or purified water as a source of water and avoid using ordinary tap water.
• Make sure the circulating fan is normal before starting, otherwise the heating and cooling system will not start.
• Safety protection devices, such as over-temperature protectors, high voltage control, etc. are checked regularly to ensure normal function.
• Avoid opening and closing the door frequently while the equipment is running to prevent temperature fluctuations.
• Disconnect the power supply during maintenance to prevent the risk of electric shock.
