Overview
HZAOC GDJW-500A low/high temperature test Chamber is a device suitable for storing, transporting and using adaptability test of electrical, electronic products, components, parts and materials in high and low temperature environment. The device supports temperature gradual change test and can perform stress screening test on electronic components. The studio volume is 500L and the Temperature range is -20~ 150 ℃.
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 heating device adopts porcelain frame nickel-chromium wire electric heating device, which has small thermal inertia, long life and stable and reliable control.
4. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant, Miscellaneous refrigeration parts are imported brands.
5. Control system adopts High Accuracy Digital Temperature Controller and PT100 Temperature Sensor, equipped with multiple Safety protection measures, including phase loss, over temperature, power failure and other protection.
Principle
The low/high temperature test Chamber achieves temperature control through heating and cooling systems. 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 fully enclosed Compressor unit and uses environmentally friendly refrigerants. The temperature sensor is placed in a trend, and the Control system monitors and adjusts the temperature in real time to ensure that the temperature in the box is uniform and stable. The air supply method is upper air supply and lower air return.
Applications
Electrical, electronic products, components, parts and materials of high and low temperature environmental adaptability test, temperature gradual change 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 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 device power supply and lighting switch.
4. Temperature range, heating rate, cooling rate and timing time are set through the operation panel.
5. Start the circulating fan to ensure that the refrigeration and heating system is started after normal operation.
6. Place the sample in the studio, close the door and ensure sealing.
7. Monitor the operation process and observe temperature fluctuations and uniformity.
8. After the test is completed, turn off the heating and cooling system, remove the test sample and power off.
Notice
Equipment Ambient Temperature should be maintained at 5~ 28 ℃, Humidity ≤ 85% R.H.
• Power supply voltage must comply with AC380V +/- 10% 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 and heating 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 the observation window for a long time in a low temperature state to prevent frost from affecting the line of sight.
Do not touch high or low temperature parts when the equipment is running to prevent burns or frostbite.
• Disconnect the power supply during maintenance and operate it by professionals.
