Overview
HZAOC GDJW-100A 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.
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 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, and the stopper is silicone rubber low foam material, 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, uses R404A environmentally friendly refrigerant, and has high voltage control, overpressure, overload and other protection systems.
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 include phase loss protection, phase sequence error protection, over-temperature protection, power-off protection, leakage protection, etc., and an independent over-temperature protector and interlock device.
Principle
The low/high temperature test Chamber realizes temperature control through the heating system and the refrigeration system. The heating system 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 refrigeration system adopts a French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant. The temperature sensor is in 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.
Temperature range (-20~ 150 ℃) and Humidity range (30~ 98% R. H).
4. Start the Control system and check that the function buttons and indicator lights are normal.
5. Place the sample in the studio and close the door to ensure sealing.
6. Start the test, monitor Temperature Uniformity, Fluctuation and other indicators.
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.
• Check whether the circulating fan is normal before starting to avoid the refrigeration unit and heating system starting when the fan fails.
Safety protection system, such as over-temperature protector, high voltage protection, etc., to ensure the safe operation of equipment.
• The observation window has a built-in heating wire and lighting to avoid direct contact with high-temperature components.
• The test hole stopper is made of silicone rubber material, and the sealing is timely after use to maintain the thermal insulation efficiency.
