Temperature and Humidity Test Chamber for Environmental Reliability Testing

With the increasing demand for reliable electronic and electrical products, environmental reliability has become an important part of product development, quality control, and laboratory testing.

Electronic components, electrical appliances, plastics, lighting products, and other materials may be exposed to significant temperature and humidity variations during storage, transportation, and operation. These environmental conditions can affect product performance, material properties, service life, and overall reliability.

To evaluate product resistance under controlled environmental conditions, international standards including IEC 60068-2-1, IEC 60068-2-2, IEC 60068-2-78, IEC 60068-2-30, and IEC 60598 specify relevant environmental testing methods for cold, dry heat, damp heat, and cyclic humidity conditions.

The Temperature and Humidity Test Chamber is designed to simulate controlled temperature and humidity environments for evaluating the reliability and environmental resistance of products and materials.

What Is a Temperature and Humidity Test Chamber?

A Temperature and Humidity Test Chamber is an environmental simulation system used to expose test specimens to precisely controlled temperature and relative humidity conditions.

By integrating heating, cooling, humidification, and dehumidification systems, the chamber can reproduce different environmental conditions that products may encounter during their service life.

The chamber provides a temperature range of -40°C to +150°C and a humidity range of 20%–98%RH, making it suitable for a wide range of environmental reliability tests.

Typical tests include:

• Cold testing
• Dry heat testing
• Damp heat testing
• Cyclic temperature and humidity testing
• High-temperature and high-humidity exposure
• Low-temperature exposure
• Environmental reliability evaluation

Applications of Temperature and Humidity Test Chamber

The Temperature and Humidity Test Chamber is suitable for environmental testing of various products, components, and materials.

Electronic and Electrical Products

It can be used for testing:

• Electronic components
• Electrical devices
• Electrical appliances
• Control equipment
• Electrical parts

The testing process helps determine whether products can maintain stable performance under different environmental conditions.

Lighting Products

The chamber can be used for environmental reliability testing of lighting equipment and components, including applications related to the IEC 60598 series.

Plastics and Materials

Temperature and humidity exposure can be used to evaluate the environmental resistance and stability of plastics, raw materials, and other materials.

Laboratory and Quality Control

The equipment is suitable for:

• Product development laboratories
• Quality control departments
• Third-party testing laboratories
• Research institutions
• Certification testing facilities
• Electronics and electrical manufacturers

Applicable Standards

The Temperature and Humidity Test Chamber conforms to the following standards specified in the technical documentation:

IEC 60068-2-1:2007

Environmental Testing – Part 2-1: Tests – Test A: Cold

This test method is used to evaluate products under low-temperature environmental conditions.

IEC 60068-2-2:2007

Environmental Testing – Part 2-2: Tests – Test B: Dry Heat

This test evaluates the performance and reliability of products exposed to elevated dry temperatures.

IEC 60068-2-78:2012

Environmental Testing – Part 2-78: Tests – Test Cab: Damp Heat, Steady State

This method provides controlled damp heat conditions for evaluating the environmental resistance of test specimens.

IEC 60068-2-30:2005

Environmental Testing – Part 2-30: Tests – Test Db: Damp Heat, Cyclic

This test evaluates products under cyclic damp heat conditions, including the specified 12-hour + 12-hour cycle.

IEC 60598

The chamber can also be used for relevant environmental testing applications associated with lighting equipment covered by the IEC 60598 series.

Main Test Functions

The Temperature and Humidity Test Chamber integrates multiple environmental simulation functions into one system.

Cold Test

The chamber can reach temperatures as low as -40°C, allowing products to be evaluated under low-temperature conditions.

Dry Heat Test

With a maximum temperature of +150°C, the chamber can simulate high-temperature environments for thermal resistance and reliability evaluation.

Damp Heat Test

The humidity control system provides a range of 20%–98%RH for controlled moisture exposure testing.

Cyclic Temperature and Humidity Test

Programmable temperature and humidity profiles allow users to simulate repeated environmental changes and evaluate product durability and reliability.

Key Features of the Temperature and Humidity Test Chamber

Large 1000-Liter Working Space

The chamber provides an internal working space of approximately:

1000 * 1000 * 1000 mm

The large test area accommodates different types and quantities of test specimens.

Wide Temperature and Humidity Range

The chamber provides:

• Temperature range: -40°C to +150°C
• Humidity range: 20%–98%RH
• Temperature fluctuation: ±0.5°C
• Temperature deviation: ≤±2.0°C
• Humidity fluctuation: ≤2.5%RH
• Humidity deviation: ≤±3%RH

These specifications provide stable and repeatable environmental conditions for laboratory testing.

Intelligent PLC Touchscreen Control

The system adopts an intelligent programmable controller with a 7-inch color touchscreen.

Users can configure:

• Temperature and humidity values
• Test duration
• Test cycles
• Program segments
• Fixed-value operation
• Program operation

The controller supports up to 120 programmable groups, with up to 100 segments per program.

Real-Time Monitoring and Data Recording

Temperature and humidity conditions can be monitored directly through the touchscreen.

The controller supports:

• Real-time temperature curves
• Real-time humidity curves
• Program execution monitoring
• Running time recording
• Test status display
• Fault alarm indication

This allows laboratory personnel to monitor test conditions throughout the testing process.

Efficient Refrigeration System

The chamber adopts an air-cooled mechanical compression single-stage refrigeration system with a low-temperature scroll compressor.

Automatic cooling-capacity adjustment helps maintain stable operating conditions while improving energy efficiency.

Durable Insulated Construction

The inner chamber is manufactured from SUS 304 brushed stainless steel.

The chamber body and door use approximately 100 mm rigid polyurethane foam insulation, helping maintain stable internal environmental conditions.

Observation Window and Internal Lighting

A 400 * 600 mm three-layer vacuum tempered glass observation window allows users to observe specimens during testing without opening the chamber door.

An internal energy-saving lamp is also provided for improved visibility.

Comprehensive Safety Protection

The chamber incorporates multiple safety protection functions, including:

• Compressor overheat protection
• Overcurrent protection
• Overpressure protection
• Adjustable over-temperature protection
• Fan motor overheat protection
• Leakage protection
• Heater dry-burning protection
• Overload and short-circuit protection
• Power failure protection
• Low water-level protection

Technical Specifications

Why Choose a Temperature and Humidity Test Chamber?

A reliable environmental test chamber helps manufacturers identify potential product failures before products enter the market.

The Temperature and Humidity Test Chamber provides:

• ✔ Temperature testing from -40°C to +150°C
• ✔ Humidity testing from 20% to 98%RH
• ✔ Large 1000-liter working chamber
• ✔ Programmable PLC touchscreen control
• ✔ Real-time temperature and humidity monitoring
• ✔ Automatic heating, cooling, humidification, and dehumidification
• ✔ Cold, dry heat, damp heat, and cyclic testing capabilities
• ✔ Support for relevant IEC 60068 environmental testing methods
• ✔ Suitable for electronics, electrical appliances, lighting products, plastics, and materials

Frequently Asked Questions

What products can be tested in a Temperature and Humidity Test Chamber?

The chamber can be used for electronic components, electrical equipment, household appliances, lighting products, plastics, raw materials, and other products requiring environmental reliability evaluation.

What is the temperature range?

The temperature range is -40°C to +150°C.

What is the humidity range?

The humidity range is 20%–98%RH.

Which standards are applicable?

The equipment conforms to IEC 60068-2-1, IEC 60068-2-2, IEC 60068-2-78, IEC 60068-2-30, and IEC 60598, according to the supplied technical documentation.

Can the chamber perform automatic testing?

Yes. The programmable control system allows users to create temperature and humidity test programs and automatically execute predefined testing sequences.

Conclusion

Temperature and humidity variations can have a significant impact on the reliability, durability, and service performance of electronic, electrical, lighting, and material products.

The Temperature and Humidity Test Chamber provides controlled environmental simulation for cold, dry heat, damp heat, and cyclic temperature and humidity testing.

With a wide -40°C to +150°C temperature range, 20%–98%RH humidity range, programmable PLC control, real-time monitoring, and comprehensive safety protection, it provides an effective environmental reliability testing solution for manufacturers, laboratories, and research institutions worldwide.