Overview
HZAOC GDJW-225E high and low temperature alternating 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 spraying, and the thermal insulation material is ultra-fine Glass thermal insulation cotton.
Features
1. The box adopts the overall structure, the inner side is stainless steel plate, and the outer side is sprayed Cold rolled steel plate, with excellent thermal insulation performance.
2. The door 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 heating wire to prevent frost and lighting.
3. The heater adopts a porcelain frame nickel-chrome wire electric heater, which has little thermal inertia, long service life, and stable and reliable control.
4. The control system adopts LCD Touchscreen temperature and humidity controller and Schneider electrical components, and supports full Chinese menu operation.
5. Equipped with multiple safety protection measures, including phase loss protection, over-temperature protection, power failure protection, etc., to ensure safe operation.
6. Support setting and program operation, can store multiple process Linear dispersion, easy and flexible operation.
Principle
The high and low temperature alternating test chamber realizes temperature control through heating and cooling system. The heater adopts porcelain frame nickel-chrome wire electric heater, which is controlled by solid-state relay through controllable pulse duty cycle PID signal output by the instrument; the cooling system adopts shunt method to adjust the cooling capacity. The control system adopts continuous PID control mode, which monitors the trend temperature through temperature transducer, and realizes accurate temperature adjustment and program 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
Steps
1. Turn on the power and lighting operation buttons.
2. Select the operation mode (fixed value or program operation) on the LCD Touchscreen controller.
3. Set temperature parameters or call pre-stored process Linear dispersion.
4. Start the circulating fan to ensure that the system is normal and then start the refrigeration unit and heating system.
5. Monitor the operating status in real time, including temperature, time, and other parameters.
6. After the test is completed, shut down the system and disconnect the power supply.
Notice
• Power frequency is 380V +/- 10% to avoid voltage instability affecting equipment operation.
Before starting the refrigeration unit and heating system, confirm that the circulating fan has been started normally to prevent the interlock device from being disabled.
• Regularly check the safety protection system, such as over-temperature protector, high voltage control, etc., to ensure normal function.
• When using the test hole, pay attention to the sealing of the stopper to prevent temperature leakage.
• When a fault occurs, find the cause according to the fault number displayed by the controller and deal with it in time.
• Avoid opening and closing doors frequently at high or low temperatures to reduce temperature fluctuations and energy consumption.
