Overview
HZAOC GDJW-010B 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. 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.
3. The observation window is multi-layer conductive film tempered hollow Glass, size 200 × 300mm, built-in special heating wire anti-frost and lighting.
4. 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.
5. The heating device adopts porcelain frame nickel-chromium wire electric heating device, which has small thermal inertia, long life and stable and reliable control.
6. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant.
7. Control system adopts High Accuracy Digital Temperature Controller, PT100 Temperature Sensor, Solid State Relay Zero Crossing Trigger to improve control accuracy.
8. Safety protection measures are provided, including phase loss protection, over-temperature protection, leakage protection, etc.
9. The air supply method is the upper air supply and lower air return method to ensure uniform temperature.
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 and uses R404A environmentally friendly refrigerant. The temperature sensor is placed in a trend, the Control system monitors the temperature through the PT100 Sensor, and uses a High Accuracy digital temperature controller for PID adjustment to ensure accurate and stable temperature. The air supply method is upper air supply and lower air return to ensure uniform temperature in the studio.
Applications
Electrical, electronic products, components, parts and materials in high and low temperature environment 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 switch of the device and start the Control system.
4. Set the desired Temperature range, heating or cooling rate and timing time (0~ 999 hours).
5. Start the circulating fan to ensure the normal operation of the air supply system.
6. Place samples in the studio as needed and close the door.
7. Monitor operating conditions and observe temperature fluctuations and uniformity.
8. After the test is completed, turn off the heating and cooling system and disconnect 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.
• Safety protection system, such as over-temperature protection, leakage protection, etc. is checked before operation.
• When the circulating fan is not started or overloaded, it is forbidden to start the refrigeration unit and heating system.
• Regularly clean the observation window and test hole to ensure no blockage.
• Avoid frequent switching during equipment operation to prolong service life.
• In case of failure, stop immediately and refer to the fault indicator light for troubleshooting.
