Overview
HZAOC GDJW-150D 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, equipped with ultra-fine Glass insulation cotton and double-decked silicone rubber sealing material to ensure good thermal insulation performance.
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 adopts double-decked silicone rubber sealing material, the observation window is multi-layer conductive film tempered hollow Glass, built-in heating wire frost-proof 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. The control mode is continuous PID control, and the operation mode includes setting value and program operation. The setting program is 120 groups, and each group has a maximum of 99 steps.
6. Equipped with a variety of safety protection functions, such as phase loss protection, over-temperature protection, power-off protection, etc., to ensure the safe operation of the equipment.
Principle
The high and low temperature alternating test chamber realizes temperature control through heating and cooling system. The heating system adopts porcelain frame nickel-chrome wire electric heater, which is controlled by solid-state relay by outputting controllable pulse duty cycle PID signal from the instrument; the cooling system adopts shunt method to adjust the cooling capacity. The control system adopts continuous PID control mode, and the temperature is set and monitored by LCD Touchscreen temperature and humidity controller to achieve accurate temperature change 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. Use the controller to set the temperature program, you can write the program name and call the stored process Linear dispersion.
2. Select the operation mode (fixed value or program operation), set the temperature range, time and other parameters.
3. Start the equipment and monitor real-time data such as set temperature, measured temperature, running time, etc.
4. During operation, if a fault occurs, find the cause according to the fault number displayed by the controller.
5. After completing the test, stop the equipment and check the results.
Notice
• Power frequency is 380V +/- 10% to avoid voltage instability affecting equipment operation.
• Check whether the safety protection system, such as high voltage control and overvoltage protection, is normal before the equipment runs.
• The built-in heating wire in the observation window is used for frost protection, and be careful to avoid directly touching high-temperature parts.
• When the controller fails, check the cause according to the fault number in time, and contact for maintenance if necessary.
• When the circulating fan is not started or overloaded, the refrigeration unit and heating system cannot be started. It is necessary to ensure the normal operation of the fan.
• When using the test hole, ensure that the stopper is intact to maintain the insulation performance.
• Regularly check the interlocking devices in the electrical control system to prevent misoperation of the equipment.
