Overview
HZAOC GDJW-010B 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 can also carry out stress screening test on electronic components.
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 anti-frosting 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 and long service life. It is controlled by a solid-state relay, and the control is stable and reliable.
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. With power failure recovery setting function, real-time display of operating data, support for program name writing and fault number display.
8. Safety protection measures include phase loss protection, phase sequence error protection, over-temperature protection, leakage protection, etc., and are equipped with independent over-temperature protectors and interlocking devices.
Principle
The test chamber realizes temperature control through evaporators, electric heaters and fans in the air-conditioning cabinet, and circulates air in the upper air supply and lower air return mode. The heating system generates heat from the porcelain frame nickel-chrome wire electric heater, and the refrigeration system uses the shunt method to adjust the cooling capacity. The temperature transducer is placed out of the trend to monitor the temperature. The control system precisely controls the heating and cooling process through the PID algorithm and solid-state relays to ensure that the temperature is stable within the set range.
Applications
Electrical, electronic products, components, parts and materials of high and low temperature environmental adaptability test, temperature gradual change test, stress screening test
Steps
Connect the power supply and check whether the voltage meets the 380V +/- 10% requirement.
2. Set the temperature program in the controller, and you can choose the setting value or the program operation mode.
3. Call the pre-stored process Linear dispersion or write a new program name.
4. Start the device and observe the real-time display data, including temperature, running time, etc.
5. After the test is completed, stop running according to the controller operation and disconnect the power supply.
Notice
• Power frequency must be stable within 380V +/- 10% when the equipment is running.
When setting up a program, pay attention to the appropriate allocation of program steps and the number of cycles.
• When a fault occurs, find the cause according to the fault number displayed by the controller and deal with it in time.
• Regularly check safety protection devices, such as over-temperature protectors, interlocking devices, etc., to ensure normal function.
When the equipment is not in use for a long time, the power supply should be disconnected and the cabinet should be kept clean.
