Overview
HZAOC GDJW-500C low/high temperature test Chamber is a adaptability test equipment suitable for storage, transportation and use of electrical, electronic products, components, parts and materials in high and low temperature environment, while supporting temperature gradual change test and electronic components stress screening test. The box adopts an 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 to ensure stable performance.
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 frost-proof 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. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant, Miscellaneous parts are imported brands.
6. Control system adopts High Accuracy Digital Temperature Controller, Sensor is PT100, Safety protection measures such as phase loss protection, over temperature protection, etc.
7. The air supply method is the upper air supply and the lower air return, and the temperature sensor is placed in a trend to ensure uniform temperature.
Principle
The low/high temperature test Chamber realizes temperature control through heating system and refrigeration system. The heating device adopts a porcelain frame nickel-chrome wire electric heating device, which outputs a controllable pulse duty cycle PID signal from the meter and is controlled by a solid state relay; the low temperature refrigeration adopts a French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant, and the system is equipped with high voltage control, overpressure, overload and other protection. The Control system adopts a High Accuracy digital temperature controller and a PT100 Sensor, which triggers the heating output through the zero crossing of the solid state relay to ensure accurate and stable temperature. The air supply method is the upper air supply and the lower air return, and the temperature sensor is placed in a trend to monitor and adjust the temperature.
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 of the device and start the function through the operation panel.
4. Set Temperature range, heating rate, cooling rate and timing parameters.
5. Start the circulating fan to ensure the normal operation of the refrigeration and heating system.
6. Monitor temperature fluctuations and uniformity and conduct tests.
7. After the test, turn off the power of the equipment and clean up the work area.
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 the equipment.
* 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 protection, etc. are checked regularly to ensure reliable operation.
* The observation window has a built-in heating wire to prevent frost, so as to avoid low temperature frosting affecting the observation.
* Test hole stopper is silicone rubber low foam material, timely sealing after use to maintain thermal insulation efficiency.
* Avoid overload when the equipment is running, prevent the unit from high voltage and overload protection triggering.
