Overview
HZAOC GDJW-225D 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. 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 spray, and the thermal insulation material is ultra-Glass fine thermal insulation cotton to ensure temperature Stability and durability.
Features
1. The box adopts the overall structure, the inner SUS304B stainless steel plate, the outer Cold rolled steel plate is 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 made of multi-layer conductive film tempered hollow Glass, with built-in special heating wire to prevent frost and lighting.
3. 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.
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, PT100 Temperature Sensor, Solid State Relay Zero Crossing Trigger to improve control accuracy.
7. Safety protection measures are provided, including phase loss protection, over-temperature protection, leakage 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 system and the refrigeration system. The heating device 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 low temperature refrigeration adopts a French Taikang fully enclosed Compressor unit and uses R404A environmentally friendly refrigerant. The temperature sensor is placed in a trend, and the air supply method is the upper air supply and the lower air return to ensure uniform temperature distribution. The Control system monitors and adjusts the temperature through a High Accuracy digital temperature controller and a PT100 Sensor to achieve long-term stable operation.
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 380V +/- 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. 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
* 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.
* Make sure the circulating fan is normal before starting, otherwise the refrigeration and heating system will not start.
* Safety protection system, such as over-temperature protector, high voltage control, etc. are checked regularly to ensure the safe operation of the equipment.
* Avoid frosting in the observation window at low temperature, the built-in heating wire has been set, but pay attention to the Operating Environment.
When the equipment is running, do not open the test hole at will to prevent temperature fluctuations from affecting the test results.
