SAIC

Rain test chambers, also commonly referred to as waterproof test chambers or box-type rain test chambers, are primarily used to evaluate whether the casings or sealed components of electrical and electronic products, household appliances, and various lighting fixtures are affected during rain testing, and whether their operational performance and adaptability can be maintained.

To ensure the electrical, mechanical and thermodynamic integrity of constant temperature and humidity test chambers (hereafter “the chamber”), to standardize operating procedures, and to reduce failure and accident rates, this instruction is established. It applies to all programmable, single-point and walk-in chambers that are newly purchased, in service or relocated.

Accurate temperature control in a high-low temperature alternating humidity test chamber enhances testing precision. Therefore, it is essential to understand the temperature control process of the testing equipment.

To establish a standardized and quantifiable daily maintenance process, reduce unexpected downtime, extend the equipment’s economic life cycle, and guarantee the traceability of temperature and humidity values.

During the past twelve months, several third-party testing bodies and OEM laboratories reported the same problem: when running dust tests in accordance with GB/T 4208, IEC 60529 or MIL-STD-810, the batch cycle has stretched from 48 h to 72 h, even 96 h, while energy consumption has risen by more than 30 %.