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High-Low Temperature Alternating Humidity Testing

High-Low Temperature Alternating Humidity Testing

1. Introduction to Temperature and Humidity Cycling (High-Low Temperature Damp Heat) Testing:

Temperature and Humidity Cycling (High-Low Temperature Damp Heat) testing is used to evaluate the performance of various products (such as aerospace products, electronic instruments, materials, electrical and electronic components, etc.) under combined temperature and humidity conditions. The temperature and humidity are not held constant but vary in a cyclical pattern. The test typically involves multiple cycles.

2. Application Areas of Temperature and Humidity Cycling Testing:

1) Road Traffic: Electronic and electrical equipment for road vehicles, equipment for railway vehicles, automotive components, etc.

2) Computers: Computers, monitors, CPUs, computer components, medical devices, precision instruments, etc.

3) Electronics & Communications: Mobile phones, RF devices, electronic communication components, PCBs, PCBAs.

4) Electrical Appliances: Home appliances, lighting, transformers, various electrical equipment, instruments, medical devices.

5) Others: Packaging boxes, transportation equipment, etc.

3. Standards for Temperature and Humidity Cycling Testing:

Test Item	Test Standards
Temperature & Humidity Cycling Test	GB/T 2423.1, IEC 60068-2-1, GB/T 2423.2, IEC 60068-2-2, GB/T 2423.3-2001, GB/T2423.3-1993, GB/T2423.4-1993, IEC 60068-2-78, GB/T 2423.4, IEC 60068-2-30, etc.

4. Equipment Parameters:

Model	JHHC-415T	PR-4KP
Temperature Range:	-40°C ~ 150°C	-40°C ~ 150°C
Humidity Range:	20% ~ 98% RH	20% ~ 98% RH
Internal Dimensions:	600×800×850 (400L)	1000×1000×800 (800L)