Alternating Humidity and Heat Test - Project Introduction

Humidity and temperature testing includes both constant humidity and temperature tests and alternating humidity and temperature tests. The high and low temperature alternating humidity and temperature test is an essential testing item in industries such as aviation, automotive, household appliances, and scientific research. It is used to test and determine the parameters and performance of electrical, electronic, and other products and materials after undergoing high, low, alternating humidity and temperature, or constant tests in varying temperature environments.

For instance, the temperature differences between day and night, varying humidity at different temperatures and times, and the product passing through regions with different temperature and humidity during transportation. This alternating temperature and humidity environment can affect the product's performance and lifespan, accelerating its aging. If the product is exposed to such conditions for extended periods, it must possess sufficient resistance to alternating humidity and temperature changes.

Method Standards

GB2423.22 Environmental Test Part 2: Test Methods Test N: Temperature Variation

GB2423.34 Environmental Test for Electrical and Electronic Products, Part 2: Test Methods — Test Z/AD: Temperature/Humidity Combination Cycling Test

GJBl50.9 Equipment Environmental Test Method: Wet and Hot Test

Test Parameters

Temperature, relative humidity, conversion time, cyclic frequency.