Overview
HZAOC GDJW-150E 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, and stress screening test for 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-fine Glass thermal insulation cotton to ensure stable performance.
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 a multi-layer conductive film tempered hollow Glass with built-in special heating wire 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, the refrigeration parts are imported brands, and R404A environmentally friendly refrigerant is used.
6. Control system with High Accuracy Digital Temperature Controller and PT100 Temperature Sensor, accurate and stable control, long-term operation without drift.
7. Safety protection measures are complete, including phase loss protection, over-temperature protection, leakage protection, etc., and there are independent over-temperature protectors and interlocking devices.
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 is controlled by solid-state relays by outputting a controllable pulse duty cycle PID signal from the meter; the low temperature refrigeration adopts a French "Taikang" fully enclosed Compressor unit, with imported refrigeration components and R404A environmentally friendly refrigerant. The temperature sensor is in trend, and the Control system realizes accurate temperature adjustment through PT100 temperature sensor and High Accuracy digital display temperature controller. The air supply method is upper air supply and lower air return to ensure Temperuniformity and Stability.
Applications
Electrical, electronic products, components, parts and materials high and low temperature 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 time are set through the operation panel.
5. Start the circulating fan to ensure that the refrigeration unit and heating system are 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 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 unit 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 opening and closing the door frequently when the equipment is running to prevent temperature fluctuations from affecting the test results.
• When the equipment malfunctions, stop using it immediately and check the fault indicator light.
