China and domestic (CN) NBC-80B Two-Chamber Thermal Shock Test Chamber Temperature Impact Test Chamber, Volume 80L

Overview

This series of high-low temperature cold and low temperature cold and heat shock Test Chamber is mainly used to test the resistance of materials to extremely high or low temperature, which is similar to the situation of discontinuous high or low temperature, and the cold and heat shock test can make all kinds of items complete the test in the shortest time. The changes or physical injuries caused by thermal shocks are caused by changes in thermal expansion and contraction or other physical values, and all kinds of products can be fully trusted by using the PID system. The effects of thermal shock include electrochemical changes caused by cracking or breaking layers and displacement of the finished product, and the full digital automatic control of the PID system will make it easy for you to operate.

The thermal shock testing machine is a necessary testing equipment for metal, plastic, rubber, electronics and other materials industries, which is used to test the material structure or composite materials, which can withstand the degree of continuous environment of extremely high temperature and extremely low temperature in an instant, so as to detect the chemical changes or physical injuries caused by thermal expansion and contraction of the test sample in the shortest time. It is divided into two-box and Three-Chamber, the difference is that the test method and internal structure are different, and the product meets the requirements of the standard for: GB/T2423.1-2008 test A, GB/T2423.2-2008 test B, GB-T10592-2008, GJB150.3-198, GJB360A-96 method 107 temperature shock test.

Satisfactory test method: GJB150.5-86 temperature shock test, in line with MIL, IEC, JIS specifications.

Application

The thermal shock Test Chamber is widely used in electronic and electrical components, automation parts, communication components, auto parts, metals, chemical materials, plastics and other industries, national defense industry, aerospace, military industry, BGA, PCB base wrench, electronic chip IC, semiconductor ceramic and polymer materials physical changes, testing the repeated tensile force of the material to high-low temperatures and the chemical changes or physical damage of the product in thermal expansion and contraction, and can confirm the quality of the product, from precision IC to heavy machinery components. It can be used as the basis or reference for the improvement of its products.

Standards

1. GB-2423.1-89 (IEC68-2-1) Test A: Low temperature test method.

2. GB-2423.2-89 (IEC68-2-2) Test B: High Temperature Test Method.

3. GJB360.8-87 (MIL-STD-202F) high temperature life test.

4. GBJ150.3 (MIL-STD-810D) high temperature test method.

5. GJB150.4 (MIL-STD-810D) low temperature test method.      

6. National military standard GJB150.3-86;

7. National military standard GJB150.4-86;

8. National military standard GJB150.5-86; 

Refrigeration system

1. Refrigeration system and compressor: The cascade refrigeration system includes a high-temperature refrigeration cycle and a low-temperature refrigeration cycle, and its connecting container is an evaporation condenser, which plays the role of energy transfer and transmits the heat energy in the studio through the two-stage refrigeration system to achieve the purpose of cooling. The design of the refrigeration system applies energy regulation technology, which is an effective treatment method that can not only ensure the normal operation of the refrigeration unit, but also effectively adjust the energy consumption and refrigeration capacity of the refrigeration system, so that the operating cost and failure rate of the refrigeration system can be reduced to a more economical state.

2. The working principle of refrigeration: the high-low refrigeration cycles all adopt the reverse Karuo cycle, which is composed of two isothermal processes and two adiabatic processes. The process is as follows: The refrigerant is adiabatic compressed to a higher pressure by the compressor, and the work is consumed to increase the exhaust temperature, and then the refrigerant is athermally exchanged with the surrounding medium through the condenser to transfer heat to the surrounding medium. After the refrigerant is adiabatic expansion through the expansion valve, the refrigerant temperature decreases. Finally, the refrigerant is athermally absorbed from the hotter object through the evaporator, reducing the temperature of the cooled object. This cycle repeats itself to achieve the purpose of cooling.

3. Cooling method: air cooling

Features

1. The programmable color screen Taitong controller is adopted, the touch screen input screen display is intuitive and easy to operate, and the data is stored for a long time.

2. Appointment on/off function, end planning setting, automatic saving of data curve in power failure, etc.

3. Real-time experimental curve analysis, equipped with RS232, USB data storage connection

4. At the end of the test, the test will automatically return to room temperature to avoid frost and condensation.

5. The servo refrigerant flow control technology is used to effectively achieve energy saving of more than 30%.

6. The experiment is carried out in cycle, and the defrosting is effectively achieved once every 5 days, and the defrosting only takes 2 hours, which does not affect the impact time

7. Pure aluminum fin evaporator is used to effectively reduce energy storage time and energy saving

8. Two boxes of test function, in line with the test specifications

9. Refrigeration advantages:

10. Low temperature control mode of traditional equipment:

• Refrigeration compressor start-stop temperature control (obsolete technology with large temperature fluctuations, serious impact on compressor life)

• Constant operation of the refrigeration compressor + PID control of heating (resulting in the cooling capacity and heating canceling out to achieve dynamic equilibrium of temperature, wasting a lot of electrical energy)

11. The new PWM cold control technology realizes low-temperature energy-saving operation: in the low-temperature working state, the heater does not participate in the work, and the refrigerant flow and flow direction of the refrigeration unit are controlled and adjusted through PWM technology, and the three-way flow adjustment of the refrigeration pipeline, cold bypass pipeline and hot bypass pipeline is realized to realize the automatic constant temperature of the studio. In this way, energy consumption can be reduced by 40% at low temperatures.

Protective measures

1. Overtemperature in the studio;

2. Overpressure of refrigerator;

3. The refrigerator is overloaded;

4. Refrigeration engine oil pressure;

5. Heater short circuit, overload;

6. The blower motor is overloaded.

7. System leakage protection

8. Ambient temperature: 5-40°C

9. Ambient humidity: ≤90%R.H

10. Conditions to ensure performance: (under the following conditions, the minimum temperature can be guaranteed to be -65°C)

11. Ambient temperature: ≤30°C (no condensation) 

host X1, manual X1, certificate X1, warranty card 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.