Overview
HZAOC GDJW-100C high and low temperature alternating test chamber is a device for storing, transporting and using adaptability test of electrical, electronic products, components, parts and materials in high and low temperature environment. It supports temperature gradual change test and electronic component stress screening test. The box body adopts an overall structure, the inner side is stainless steel plate, the outer side is sprayed Cold rolled steel plate, and the thermal insulation material is ultra-fine thermal insulation Glass cotton.
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 with built-in heating wire to prevent frost and lighting.
3. The side of the box is equipped with φ 50mm test hole, and the stopper is silicone rubber low foam material, which has both high and low temperature resistance and thermal insulation efficiency.
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 is 120 groups, each group is 99 steps, and the cycle can be connected.
7. It has a variety of safety protection functions, such as phase loss protection, over-temperature protection, power-off protection, etc., and is equipped with an independent over-temperature protector.
8. Support power-off recovery settings, display operating data in real time, and display the fault number when faulty, making it convenient for users to find the cause.
Principle
The high and low temperature alternating test chamber realizes temperature control through evaporators, electric heaters and fans in the air conditioning cabinet. The heating system adopts a porcelain frame nickel-chrome wire electric heater, which is controlled by a solid-state relay by outputting a controllable pulse duty cycle PID signal from the meter; the refrigeration system uses a shunt method to adjust the cooling capacity. The temperature transducer is placed in a trend, and the air supply mode is the upper air supply and the lower air return to ensure temperature uniformity and stability. The control system adopts continuous PID control, which supports program operation and fixed value operation to achieve accurate temperature change and maintenance.
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. Set the temperature program in the controller, including the program name, temperature value, time, and other parameters.
3. Select the operation mode (set value or program operation) and start the device.
4. Real-time monitoring of operating data, such as set temperature, measured temperature, running time, etc.
5. After the test is completed, power off the device.
Notice
• When the equipment is running, ensure that the circulating fan starts normally, otherwise the refrigeration unit and heating system will not operate.
• There is a high voltage meter at the high voltage terminal to monitor the operation of the system and check it regularly to ensure safety.
• When a fault occurs, find the cause according to the fault number displayed by the controller and deal with it in time.
• Power frequency check before use 380V +/- 10% requirements.
The equipment has a variety of protection functions, such as over-temperature and power-off protection, but users need regular maintenance to ensure reliability.
• Test hole stopper is silicone rubber low foam material, ensure sealing after use to prevent temperature leakage.
