Overview
HZAOC GDJW-010A 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. Stress screening test can also be carried out on 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 a multi-layer conductive film tempered hollow Glass, the size is 200 × 300mm, and the built-in special heating wire is anti-frosting 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 refrigeration parts are imported brands.
6. Control system with High Accuracy Digital Temperature Controller, PT100 Temperature Sensor, Solid State Relay Zero Trigger, with a variety of Safety protection measures.
7. The air supply method is the upper air supply and the lower air return, and the temperature sensor is placed in a trend.
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 and uses R404A environmentally friendly refrigerant. The Control system monitors the temperature through a High Accuracy digital temperature controller and a PT100 Sensor, and uses the upper air supply and lower air return mode to ensure uniform temperature. The system has high voltage control, overpressure, overload and other protection mechanisms to ensure safe operation.
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.
3. Turn on the power switch and start the Control system.
4. Set the required Temperature range, heating or cooling rate and timing time.
5. Start the circulating fan to ensure that the refrigeration unit and heating system are started after normal operation.
6. Monitor the test process through observation windows and test holes.
7. After the test, turn off the heating and cooling system, and then turn off the power.
Notice
• Ensure that the working Ambient Temperature is 5~ 28 ℃, Humidity ≤ 85% R.H.
• Power supply voltage is checked before use to avoid phase loss or phase sequence errors.
• Regularly check the protection system, such as over-temperature protector, high voltage control, etc., to ensure safety.
• Refrigeration units and heating systems are prohibited from starting when the circulating fan is not started or overloaded.
• When the observation window is frosted, the built-in heating wire will work automatically to avoid manual defrosting.
• Test hole stoppers need to be kept intact to prevent temperature leakage.
• When the equipment is running, avoid opening and closing the door frequently to maintain a stable temperature.
• Disconnect the power supply during maintenance to prevent the risk of electric shock.
