Overview
HZAOC GDJW-150C 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, 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. The low temperature refrigeration adopts the French "Taikang" fully enclosed Compressor unit, the refrigeration parts are imported brand products, and the R404A environmentally friendly refrigerant is used.
6. Control system adopts High Accuracy Digital Temperature Controller, accurate and stable control, long-term operation does not drift, Sensor is PT100 Temperature Sensor.
7. Safety protection measures are provided, including phase loss protection, over-temperature protection, power-off protection, etc., and independent over-temperature protectors and interlocking devices are provided.
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 controlled pulse duty cycle PID signal output by the meter and controlled by a solid state relay; the refrigeration system adopts a French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant. The temperature sensor is placed in a trend, and the Control system monitors and adjusts the temperature through a High Accuracy digital temperature controller and a PT100 Sensor. The air supply method is upper air supply and lower air return to ensure Temperature uniformity and Stability.
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. Provide deionized water or purified water as a source of water.
3. Temperature range, heating rate, cooling rate and timing time are set through the operation panel.
4. Start the equipment and check the normal operation of the fan, heating and cooling system.
5. Place the sample in the studio and close the door to ensure sealing.
6. Monitor temperature fluctuations and uniformity to ensure compliance with test requirements.
7. After the test is completed, turn off the device and disconnect the power supply.
Notice
• 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.
• When the equipment is running, ensure that the circulating fan starts normally, otherwise the refrigeration and heating system will not work.
Safety protection system, such as over-temperature protection, high voltage control, etc., to ensure equipment safety.
The observation window heating wire and lighting need regular maintenance to prevent frost and lighting failure.
• The test hole stopper should be kept intact to ensure thermal insulation efficiency.
• During equipment maintenance, disconnect the power supply to avoid the risk of electric shock.
