1. Introduction
In modern product design and manufacturing, environmental reliability testing plays a crucial role in ensuring performance stability under diverse climatic conditions. The temperature and humidity oven serves as a core testing tool that replicates extreme environments—such as high heat, cold, dryness, and humidity—to evaluate the adaptability of materials and components.
The BONAD BND-WSF Temperature-Humidity Cycling Test Chamber provides high-precision environmental simulation capabilities. It enables accurate control of temperature and humidity for testing in industries like CFL/LED lighting, electrical appliances, and electronic components. Designed in compliance with IES LM-80-08 standards, it ensures long-term reliability and product performance validation.
2. Technical Principles and Core Features
2.1 Technical Principles
The BND-WSF test chamber operates based on thermodynamic cycle control and dynamic humidity balance, supported by four core systems:
- Temperature Control System: Using a dual structure of imported compressors, finned evaporators, and electric heating tubes, the chamber maintains a temperature range from -40°C to 150°C with stability within ±0.5°C.
- Humidity Control System: Combines ultrasonic and electrode humidification, achieving 20%–98% RH with ±3% RH precision.
- Air Circulation System: Ensures uniform temperature and humidity distribution (temperature uniformity ≤ ±2°C, humidity ≤ ±5% RH).
- Program Control System: A 7-inch touchscreen with PLC allows up to 120 programmable sequences, automatic data logging, and report generation.
2.2 Core Characteristics
- Wide-Range Simulation: Simulates heat, cold, dry, and humid conditions for global testing needs.
- High-Precision Control: Meets ISO, IEC, and GB standards with exceptional repeatability.
- Safety Design: Includes over-temperature, overload, phase-failure, and leakage protections.
- Customization & Connectivity: Offers RS485 interface for remote monitoring and optional test accessories for specific industry needs.
3. Industrial Applications
3.1 CFL/LED Lighting (IES LM-80-08 Compliance)
The BND-WSF chamber is essential for luminous flux maintenance testing, humidity resistance, and low-temperature startup performance of LED products.
- Simulates aging at 55°C and 85°C to test LED lifetime.
- Conducts humid-hot reliability testing at 40°C/90% RH.
- Validates low-temperature performance at -20°C to ensure proper startup in cold regions.
3.2 Electrical Products
In the electrical industry, the oven supports high-temperature load tests, low-temperature storage tests, and temperature-humidity cycling for appliances such as air conditioners, washing machines, and small home devices—ensuring operational safety under extreme environments.
3.3 Electronic Components
For semiconductors, capacitors, and connectors, the chamber performs:
- High-Temperature Aging Tests (e.g., chips at 125°C).
- Humidity Resistance Tests (85°C, 85% RH).
- Cold Resistance Tests (−40°C).
These tests prevent early failure, corrosion, or deformation, guaranteeing reliability in electronic assemblies.
4. Core Technical Parameters
| Parameter | Specification | Control Precision | Application Scenario |
|---|---|---|---|
| Temperature Range | -40°C to 150°C | ±0.5°C | LED, electrical load testing |
| Humidity Range | 20% RH–98% RH | ±3% RH | Humid-hot reliability testing |
| Temp. Ramp Rate | 0.1–5°C/min | ±0.5°C/min | Environmental cycling tests |
| Chamber Size | 150L | – | Small-to-medium components |
| Program Capacity | 120 programs, 99 segments each | – | Long-duration aging tests |
| Safety | Over-temp, overload, leakage protection | – | All industries |
| Interface | RS485/Ethernet optional | – | Remote monitoring |
5. Conclusion
The BONAD BND-WSF Temperature and Humidity Oven is a versatile and high-precision environmental testing chamber designed for CFL/LED lighting, electrical appliances, and electronic component industries. Its ability to simulate extreme climates—heat, cold, dryness, and humidity—helps manufacturers ensure product reliability, performance stability, and compliance with international testing standards such as IES LM-80-08, ISO, and IEC.
By integrating smart program control, precise temperature-humidity balance, and comprehensive safety protection, this test chamber provides a powerful platform for environmental reliability testing across multiple industries.
About BONAD
BONAD Test Equipment specializes in manufacturing advanced testing instruments including Environmental Test Chambers, Waterproof Test Equipment, Battery Testers, Flammability Test Chambers, and Electrical Safety Testers. All devices comply with ISO, IEC, ASTM, EN, GB, UL, and CSA standards, and most are certified with CE, ISO17025, and CNAS. Custom solutions are available for specialized testing needs.
