Understanding the Technology and Applications of Rapid Temperature Change Test Chamber

The rapid temperature change test chamber can be said to be a rapid temperature change test chamber, which is used for inspecting the various performance indicators of products in aerospace, information electronics, instruments, materials, electrical and electronic products, and various electronic components under rapid temperature changes.

Rapid temperature change test chamber: mainly used for environmental simulation testing of the physical and other related characteristics of products under low and high temperature conditions in accordance with national standards or user defined requirements,

Determine the performance of the product by testing the results to determine whether it meets the requirements for product design, improvement, identification, and factory inspection.

The control system of the rapid temperature change test chamber needs to be equipped with safety protection measures, including: compressor overheating, overpressure, overheating, fan motor overheating, overall equipment under/reverse phase, overall equipment timing, leakage protection, overload and short circuit protection, etc.

When any protection function is implemented, the operation panel will display an alarm on the LCD display screen to inform the user of any fault and cut off the main circuit power. After the fault is resolved, the device will be started.

When the rapid temperature change test chamber is conducting a high temperature test, if the temperature change cannot reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the heating speed is slow, the air circulation system needs to be checked to see if the regulating baffle of the air circulation is opened normally. Otherwise, the motor of the air circulation needs to be checked for normal operation. If the temperature overshoot is severe, it is necessary to adjust the PID setting parameters.

Working principle of fast temperature change test chamber:
Rapid temperature change test chamber: A “binary cascade air-cooled refrigeration system” composed of a fully enclosed compressor is used. The cascade refrigeration system includes “a high-temperature refrigeration cycle and a connecting container for refrigeration cycle” as an evaporative condenser,

Reminder: The evaporative condenser also has the function of energy transfer, which transfers the internal thermal energy of the studio through a two-stage refrigeration system to achieve the purpose of heating up.

The high and low cooling cycle of the rapid temperature change test chamber usually adopts the “reverse Karo cycle”, which consists of “two isothermal processes and two adiabatic” processes.

The process is as follows: the refrigerant is adiabatic compressed by the compressor to a higher pressure, consuming work to increase the exhaust temperature. After the refrigerant undergoes isothermal heat exchange with the surrounding medium through the condenser, and transfers heat to the surrounding medium, the refrigerant undergoes adiabatic expansion through the valve to do work. At this time, the temperature of the refrigerant will decrease.

The refrigerant can absorb heat from higher temperature objects such as evaporators to lower the temperature of the cooled object, and this cycle repeats itself to achieve the goal of cooling.

The structural characteristics of the rapid temperature change test chamber:
1. The rapid temperature change test chamber has a beautiful appearance, reasonable structure, advanced technology, and exquisite material selection. It also has simple and convenient operation performance and reliable equipment performance.

2. Adopting advanced measurement equipment and controller: adopting a large color LCD human-machine touch dialogue LCD human-machine interface controller, it is easy to operate, easy to learn, stable and reliable, and displays complete system operation status and execution and setting program curves in both Chinese and English.

With 96 independent test specifications, a shock time of 999 hours and 59 minutes, and a cycle cycle of 1-999 times, as well as the ability to set and achieve automatic operation of the refrigeration machine, automation can greatly reduce the workload of operators and automatically start and stop work at any time.

3. There is a 50mm diameter testing hole on the left side of the chamber that can be used to test components for external power load wiring.

4. The rapid temperature change test chamber is equipped with a fully automatic and high-precision system circuit, with P.L.C locking treatment for any component action. It adopts P.I.D automatic calculation control (with high temperature control accuracy) and advanced scientific air circulation design to ensure uniform indoor temperature. It avoids any dead corners and any potential safety hazards, while ensuring the long-term reliability of the equipment.

The rapid temperature change test chamber has the following characteristics:
1. The structure adopts a design concept of no jacket and combination;
Having a simple appearance, ideal assembly method, compact chamber structure, and extremely convenient maintenance and use;

2. The outer shell is made of cold-rolled thin steel plate, with a surface sprayed with plastic, which is beautiful and durable; The inner liner is made of stainless steel plate with a flat and clean surface; The right side of the studio is equipped with components such as a circulation device, heater, and refrigeration evaporator; The top is equipped with a pair of blower motors to circulate cold and hot air in and out of the studio to ensure temperature requirements;

3. The sealing strip of the inner and outer doors is made of silicone rubber material, which is safe and non-toxic;

4. The rapid temperature change test chamber is equipped with two sealing devices with good sealing performance, and observation windows are set up for easy observation of the test situation of the sample;

5. The rapid temperature change test chamber adopts a touch digital display instrument, and has functions such as programming, curve display, PID self-tuning, and fault display;

6. The refrigeration system is installed on the right side of the main chamber, and the refrigeration unit adopts imported units with good performance, which are easy to install and reliable in performance;

7. Super strong safety protection functions: power overload protection, leakage protection, control circuit overload, short circuit protection, compressor protection, grounding protection, over temperature protection, alarm sound prompt, etc;

8. Customization and changes in model and technical parameters can be designed based on the user’s sample size, the size of the sample, and specific experimental requirements.

The rapid temperature change & humidity heat test chamber is a temperature and humidity test device, applied for aerospace products, information electronic instruments, electrical, electronic products, and various electronic components to test various products under the condition of rapid temperature change performance.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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