Overview
HZAOC GDJW-010C high and low temperature alternating test chamber is a device suitable for storing, transporting and using adaptability test of electrical, electronic products, components, parts and materials in high and low temperature environment, while supporting temperature gradual change test and electronic components stress screening test. The box adopts an 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 to ensure efficient thermal insulation performance.
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 frost-proof and lighting.
3. The side of the box is equipped with φ 50mm test holes, and the stopper material is silicone rubber with low foaming, high and low temperature resistance and thermal insulation.
4. The heater adopts a porcelain frame nickel-chrome wire electric heater, which has little thermal inertia, long service life, and stable and reliable control.
5. The control system adopts LCD Touchscreen temperature and humidity controller and Schneider electrical components, supports full Chinese menu operation, and displays a resolution of 0.01 ° C.
6. The operation mode includes setting value and program operation, the control mode is continuous PID control, the setting program 120 groups, each group up to 99 steps, can be connected to the loop.
7. Equipped with power failure recovery settings, real-time display of operating data, fault number display, multiple alarm functions, and safety protection measures.
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, and the controllable pulse duty cycle PID signal output by the instrument is controlled by solid-state relay; the refrigeration system adopts shunt method to adjust the cooling capacity. The control system adopts continuous PID control mode, which sets and monitors the temperature through the LCD Touchscreen temperature and humidity controller. The air supply mode is the upper air supply and the lower air return, and the temperature transducer is placed in a trend 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
Steps
1. Turn on the power supply and check whether the Power frequency meets 380V +/- 10%.
2. Select the operation mode (set value or program operation) on the controller, and set the temperature parameters and program steps.
3. Call the pre-stored process Linear dispersion or write a new program name to confirm that the setting is correct.
4. Start the device and observe the real-time display data, including set temperature, measured temperature, running time, etc.
5. Monitor the operating status of the equipment, and if there is any fault, find the cause according to the fault number displayed by the controller.
6. After the test is completed, turn off the power of the equipment and clean the inside of the cabinet.
Notice
• Power frequency should be checked within 380V +/- 10% before operation to avoid voltage instability affecting performance.
When setting the program, ensure that the program steps and temperature parameters are correct to prevent misoperation from causing the test to fail.
When the equipment is running, pay attention to whether the over-temperature protector and safety measures are normal to prevent overheating or malfunction.
• Regularly check the box sealing and test hole stopper to ensure thermal insulation effect and high and low temperature resistance performance.
• Disconnect the power supply during maintenance to avoid the risk of electric shock, and follow the manufacturer's instructions for cleaning and maintenance.
• In the event of a failure, stop running immediately, check the cause according to the controller fault number, and contact professional maintenance if necessary.
