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Home News Application Research of Temperature Cycling Chamber in Reliability Testing of LED and Electrical Electronic Products
07 Jul, 2026 3 Views Author: Cherry Shen

Application Research of Temperature Cycling Chamber in Reliability Testing of LED and Electrical Electronic Products

Abstract

Temperature cycling chamber is the core equipment for verifying the environmental adaptability and reliability of materials and products. It can accurately simulate multiple climatic scenarios such as low temperature, high temperature, humidity heat and temperature-humidity cycling, reproduce dynamic changes in the natural environment, and accelerate the evaluation of product performance stability and structural reliability under extreme and alternating conditions.

LISUN GDJS-015B temperature cycling chamber focuses on the core testing demands of LED lighting, electrical appliances, electronic components and other industries. It fully meets the IES LM-80-08 standard for lumen maintenance testing of LED lamps and provides a long-term stable temperature and humidity control environment. Adopting the core advantages of wide temperature range coverage and high-precision temperature and humidity control, equipped with imported key components and a multiple safety protection system, it ensures accuracy, stability and safety during the whole test process. As an essential tool for product research and development, quality inspection and compliance certification, this paper systematically illustrates the performance characteristics and testing value of the equipment combined with standard specifications, technical parameters, control architecture and industrial applications.

Introduction

With the rapid popularization of LED lighting, automotive electronics, smart home appliances and industrial control equipment, their stability under complex climatic conditions such as high and low temperature and high humidity directly determines service life and operational safety. Traditional natural exposure testing has a long cycle and uncontrollable conditions, which cannot meet the demands of industrial research and mass production.

By simulating controllable laboratory environments, temperature cycling chamber realizes accelerated evaluation including high temperature heat resistance, low temperature endurance, damp heat aging and alternating dry-wet cycling, and has become indispensable reliability testing equipment for the entire electrical and electronic industry chain.

LISUN GDJS-015B temperature cycling chamber is specially designed for rigorous environmental testing. It fully complies with major domestic and international standards including GB/T 2423, IEC 60068, GB 7000.1, IES LM-80-08 and ISO 16750-4. It can deliver long-term stable and high-precision temperature and humidity conditions, widely applied in LED light decay testing, high and low temperature humidity verification of electronic components, and material weathering evaluation, providing authoritative data support for product performance iteration and quality control. 

Thermal chambers

Figure: Humidity chamber

Core Functions and Standard System of Temperature Cycling Chamber

Core Functions
Cooperated with refrigeration, heating, humidification, dehumidification, circulating air duct and intelligent program control system, temperature cycling chamber realizes the following functions:
• Extreme temperature simulation: covers the wide temperature range from -70℃ to 150℃, meeting full-scenario testing from severe cold to high temperature.
• Precise humidity control: continuously adjustable humidity from 20%~98%RH for high humidity aging and low humidity drying tests.
• Alternating temperature and humidity cycling: programmatically switches periodically between high temperature & high humidity and low temperature & low humidity to simulate day-night and seasonal climate fluctuation.
• Long-term stable operation: specially designed for long-time aging tests such as LED lumen maintenance, supporting continuous operation for thousands of hours without parameter fluctuation.

Core Technical Parameters of LISUN GDJS-015B Temperature Cycling Chamber

The GDJS series provides multiple chamber sizes. GDJS-015B is the mainstream medium-large volume model. The key parameters are shown in the table below:

Parameter Item GDJS-015B Technical Specification
Internal Chamber Dimension 100cm×100cm×150cm
Temperature Range A: -20℃~150℃ B: -40℃~150℃ C: -60℃~150℃ D: -70℃~150℃
Temperature Fluctuation / Uniformity ±0.5℃ / ±2℃
Heating Rate 1.0℃~3.0℃/min
Cooling Rate 0.7℃~1.0℃/min
Humidity Range 20%~98%RH
Humidity Deviation -2%~-3%RH
Rated Power 16.5kW
Power Supply AC 380V±10% Three-phase, 50Hz/60Hz

Core Structure and Control Advantages
• Chamber Material: SUS304 stainless steel inner tank, polyurethane and ultra-fine glass fiber insulation layer, silicone rubber sealing strip to avoid temperature and humidity leakage.
• Sensor System: High-precision Vaisala humidity sensor imported from Finland plus PT100 platinum resistance thermometer, featuring high accuracy and maintenance-free performance, better than traditional wet-dry bulb sensors.
•  Control System: Self-developed temperature controller combined with Panasonic PLC dual-core control, Chinese and English operation interface, supporting USB/RS232/RS485 communication for remote monitoring and data traceability.
• Refrigeration System: Fully enclosed air-cooled compressor imported from Tecumseh of France, stable performance and global after-sales support.
• Heating System: Independent nichrome alloy heater with uniform heating and no local overheating.
• Circulation System: Low-temperature resistant low-noise motor plus multi-blade centrifugal fan, noise ≤65dB, ensuring uniform temperature and humidity distribution without dead corners.
• Safety Protection: Multiple protection functions including electric leakage, short circuit, heater/motor overheating, compressor overpressure, overload and overcurrent protection.

video

 Key Application in LED Lumen Maintenance Test (IES LM-80-08)

Temperature cycling chamber is the core facility to complete IES LM-80-08 standard testing. LISUN GDJS-015B fully meets the strict requirements of this standard:
• Test Requirements: LED light sources need to be aged continuously at specified temperatures such as 55℃ or 85℃ for at least 6000 hours. Luminous flux and chromatic coordinate changes are measured periodically to evaluate lumen maintenance rate.
• Equipment Value: GDJS-015B supports long-term continuous stable operation with temperature fluctuation within ±0.5℃, ensuring consistent test environment and repeatable comparable test data.
• Volume Advantage: The large 150L internal space can place multiple groups of LED samples simultaneously, meeting batch testing and sample quantity requirements.
• Reliable Data: High-precision temperature control plus uniform air circulation avoids test distortion caused by local overheating and guarantees the authority of LM-80 test reports.

Industry Application Scenarios

• LED Lighting Industry: Lumen maintenance rate, damp heat aging and high-low temperature cycling tests for LED light sources, modules and lamps, supporting LM-80 certification and energy efficiency market access.
• Electronic Components: Attenuation testing of capacitance, resistance, chip and connector performance under high and low temperature humid environment.
• Automotive Electronics: Comply with ISO 16750-4 to verify the reliability of vehicle controllers, sensors and display screens under climatic load conditions.
• Materials & Structural Parts: Deformation, cracking and aging tests of plastic, rubber, coating and shell materials under alternating temperature and humidity conditions.
•  Home Appliances & Electrical Products: Meet GB 4706, GB 7000.1 and other safety standards to verify overall product environmental adaptability.

Core Competitive Advantages

• Full Standard Coverage: One single equipment meets national standards, IEC, IES and automotive regulations, greatly reducing enterprise equipment investment cost.
• High-precision Temperature & Humidity Control: Small fluctuation and excellent uniformity, perfectly suitable for high-standard projects such as long-term LED aging.
• Long-term Operational Stability: Designed specifically for thousands of hours continuous testing, equipped with imported components, low failure rate and easy maintenance.
• Intelligent & Expandable: Programmable alternating control, remote monitoring and data export function, compatible with automatic production lines and third-party laboratories.
• High Safety Redundancy: Multiple protection mechanisms ensure equipment and sample safety during long-term high-load operation.

Conclusion

Temperature cycling chamber is indispensable core equipment for modern industrial product reliability verification, especially widely used in LED lighting, electrical appliances and electronic component industries. Featuring wide temperature range, high precision, long-term stability and strong standard compatibility, LISUN GDJS-015B temperature cycling chamber perfectly supports IES LM-80-08 lumen maintenance testing and various environmental test standards. By accurately simulating complex climatic conditions, it provides scientific, authoritative and quantifiable data support for product performance evaluation, life prediction, design optimization and market access certification.

With continuously rising requirements for product safety and reliability, GDJS-015B temperature cycling chamber will continue to provide stable and professional environmental testing solutions for LED, electronics, automotive and home appliance industries, helping enterprises improve product quality, reduce after-sales risks and enhance global market competitiveness.

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Application Research of Temperature Cycling Chamber in Reliability Testing of LED and Electrical Electronic Products

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