Overview
GDJW-100A high and low temperature alternating test chamber is a HZAOC brand product, which 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.
Features
1. The box adopts the overall structure, the inner side is 1.0mm SUS304B stainless steel plate, and the outer side is 1.0mm Cold rolled steel plate
2. The thermal insulation material is made of ultra-fine Glass thermal insulation cotton, and the door sealing is double-decked silicone rubber sealing material
3. The observation window is multi-layer conductive film tempered hollow Glass, size 200 × 300mm, built-in special heating wire anti-frost and lighting
4. The side of the box is equipped with φ 50mm test hole, the stopper is silicone rubber low foam material, high and low temperature resistance and thermal insulation
5. The heater adopts a porcelain frame nickel-chrome wire electric heater, which has little thermal inertia, long life, and stable and reliable control
6. The control system adopts LCD Touchscreen temperature and humidity controller and Schneider electrical components, all Chinese menu operation
7. With a variety of safety protection measures, including phase loss protection, over-temperature protection, leakage protection, etc
8. Linear dispersion of multiple processes can be stored, power failure recovery function supports program termination or continuous operation from breakpoint
Principle
The test chamber realizes temperature control through evaporators, electric heaters and fans in the air-conditioning cabinet. The heating system uses PID signals to control the nickel-chrome wire electric heater of the porcelain frame through solid-state relays, and the refrigeration system uses the shunt method to adjust the cooling capacity. The temperature transducer is placed in a trend, and the air supply mode is upper air supply and lower air return to ensure temperature uniformity and control accuracy.
Applications
Electrical and electronic products, components, parts and materials adaptability test, stress screening test
Steps
1. Set the temperature program in the controller, you can choose the fixed value or the program operation mode
2. Invoke pre-stored process Linear dispersion or write a new program name
3. Start the device and monitor the real-time displayed temperature, running time and other data
4. Set Timer Range and Safety Protection Parameters according to Test Requirements
5. After the run, check the fault number (if any) and deal with it
Notice
* Power frequency 380V +/- 10%
When the circulating fan is not started or overloaded, it is forbidden to start the refrigeration unit and heating system
When a fault occurs, find the cause according to the fault number displayed by the controller
* Regularly check safety protection devices, such as over-temperature protectors, high voltage controls, etc
* When using the test hole, make sure the stopper is installed tightly to maintain the insulation performance
Avoid running in extreme temperatures for long periods of time to prevent equipment overload
