Overview
HZAOC GDJW-225D high and low temperature alternating 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 spraying, and the thermal insulation material is ultra-fine Glass thermal insulation cotton.
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 heating wire anti-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. With a variety of safety protection measures, including phase loss protection, over-temperature protection, leakage protection, etc.
6. Support setting value and program operation, can store multiple process Linear dispersion, power failure recovery function is flexible.
Principle
The test chamber realizes temperature control through heating and cooling system. The heater adopts porcelain frame nickel-chrome wire electric heater, and the controllable pulse duty cycle PID signal output by the instrument is controlled by solid-state relay; the cooling capacity adjustment adopts shunt method. The control system adopts continuous PID control, the temperature transducer is placed in the trend, and the air supply mode is the upper air supply and the lower air return to ensure temperature uniformity and stability.
Applications
Electrical and electronic products, components, parts and materials adaptability test, stress screening test
Steps
1. Set the temperature program in the controller or call the pre-stored process Linear dispersion.
2. Start the circulating fan to ensure that the system is normal and then start the refrigeration unit and heating system.
3. Monitor real-time display data, including set temperature, measured temperature, running time, etc.
4. After the test is completed, stop running or perform power-off recovery processing according to the setting.
Notice
• Power frequency is 380V +/- 10% to avoid voltage instability affecting equipment operation.
• When using the stopper in the test hole on the side of the box, pay attention to the temperature resistance of the silicone rubber material.
• Check the safety protection system before operation, such as phase loss protection, over-temperature protection, etc. are normal.
• When the controller malfunctions, find the cause according to the fault number displayed on the LCD and deal with it in time.
• When the circulating fan is not started or overloaded, the refrigeration unit and heating system cannot be started, so it is necessary to troubleshoot first.
• Regularly check the heater, refrigeration system and sealing components to ensure long-term stable operation of the equipment.
