HZAOC GDJW-800A high-low temperature cyclic Test Chamber -20-150 ℃/800L

Applications

It is suitable for the adaptability test of electrical, electronic products, components, components and their materials when they are stored, transported and used in high-low temperature environments, as well as the temperature gradient test. Stress screening tests can also be performed on electronic components.

Box structure

1. The cabinet adopts an integral structure.

2. The inner side of the box is made of 1.0mm SUS304B stainless steel plate, and the outer side is made of 1.0mm cold-rolled steel plate with plastic spraying. 

3. The insulation material adopts ultra-fine glass insulation cotton.

4. The door is sealed with double-layer silicone rubber sealing material.

5. The observation window is tempered hollow glass with multi-layer conductive film, the size is 200×300mm. In order to prevent the glass from frosting at low temperature, it is surrounded by a built-in special heating wire and equipped with a lighting lamp to provide illumination for observation.

6. There is a φ50mm test hole with a plug on the side of the box. The plug material is silicone rubber with low foaming, which can withstand high-low temperatures and has thermal insulation performance.

7. There is an air-conditioning cabinet on the back side of the working room of the cabinet, and evaporators, electric heaters, wind, fan volutes and other equipment are installed in it.

8. The temperature sensor is placed at the air outlet.

9. The air supply mode in the Test Chamber is the upper air supply and the lower air return mode.

Heating and Cooling Systems

1. The heater adopts a porcelain frame nickel-chromium wire electric heater, which has low thermal inertia and long service life. The controllable pulse duty cycle PID signal is output by the instrument, which is controlled by a solid state relay, and the control is stable and reliable.

2. In order to ensure the safe operation of the system, protection systems such as high pressure control, overpressure, and overload must be installed in the system. At the same time, in order to monitor the operation of the system, a high pressure gauge is installed at the high pressure end to monitor the operation of the system.

3. Refrigerating capacity adjustment adopts shunt method.

Control System

1. Control system: The electrical control system is composed of LCD touch screen temperature and humidity controller and Schneider electric components.

2. The controller adopts full Chinese menu operation mode. 

3. The minimum display resolution is 0.01°C.            

4. Operation mode: fixed value and program operation.

5. Control method: continuous PID control.                  

6. There are 120 groups of setting programs, and each group of programs can be set up to 99 steps, and each program group can be connected. Full cycle, up to 999 times, part of the cycle, up to 99 times.

7. Power-off recovery setting, including: the program terminates after power-off, and the program continues to run from the breakpoint after power-off.

8. Real-time display of program running time, number of segments, remaining time, and repetition times; can display test data, including set temperature, measured temperature, total running time, segment running time, segment remaining time, heating state, calendar time, etc.; temperature Can be directly displayed digitally,

9. When setting the program, you can write the program name for easy search.

10. When a fault occurs, the LCD touch screen of the controller can display the fault number, and the user can easily find the cause of the fault according to the fault number. 

11. It has a variety of alarm function options, including: absolute value alarm, deviation alarm, etc.

12. The control system adopts solid-state relay zero-crossing trigger to reduce noise, reduce pollution, facilitate maintenance and improve control accuracy.

13. The high-low temperature alternating Test Chamber shall be equipped with safety protection measures in the control system, including: phase loss protection, phase sequence error protection, phase Voltage uneven protection, fan overload protection, over temperature, power failure protection, unit high Voltage protection, Unit overload protection, unit over-temperature protection, leakage protection and other protections.

14. The control system is equipped with a user-friendly operation panel, which is located on the upper left of the test box. Except for the operation buttons of power supply and lighting, other operations only need to be set in the controller.

15. Multiple process curves can be stored in the controller in advance, and only need to be called when needed without setting again.

16. In addition to the main controller, an independent over-temperature protector is installed in the system. Even if the main controller fails, the over-temperature protector can reliably cut off the heating power to protect the safety of equipment and samples.

17. There is an interlocking device in the electrical control system. When the circulating fan is not started or is overloaded, the refrigeration unit and the heating system cannot be started. When the unit is ultra-high pressure and overloaded, the refrigeration unit will be prohibited.

host x1, sample holder x1, silicone plug x1, warranty card x1, manual x1, certificate x1.

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.