Overview
HZAOC GDJW-010E low/high temperature test Chamber is suitable for 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 of electronic components. Temperature range is -70~ 150 ℃, studio volume is 1000L.
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 and lighting lamp.
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 life and stable and reliable control.
5. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant, Miscellaneous refrigeration parts are imported brands.
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 provided, including phase loss protection, over-temperature protection, unit overload 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 and cooling system. The heating system adopts a porcelain frame nickel-chrome wire electric heating device, which is controlled by the instrument outputting a controllable pulse duty cycle PID signal through a solid-state relay; 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 adjusts the heating and cooling according to the set parameters to realize the circulation mode of upper air supply and lower air return to ensure uniform and stable temperature.
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 parameters 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. Monitor temperature fluctuations and uniformity to ensure compliance with test requirements.
7. After the test is completed, turn off the heating and cooling system, and then turn off the power supply.
Notice
Equipment Ambient Temperature should be maintained at 5~ 28 ℃, Humidity ≤ 85% R.H.
• Power supply voltage must meet AC380V +/- 10% requirements 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 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, but maintenance still needs to be paid attention to.
• When the equipment is running, do not block the test hole and send the trend to ensure Temperature uniformity.
