Salt spray test chamber severity rating

　　

The salt spray test chamber is suitable for simulating the destructiveness of the surrounding oceanic climate caused by the product. It is widely used in electric and electronic industries, scientific research schools, military units and other industries. The equipment consists of a control system and a spray system.

This test is accelerated compared to most of the conditions of use. However, it is not possible to have the same acceleration factor for various types of samples (see GB2424.10-81 “Energy Guide for Atmospheric Corrosion Acceleration Tests for Basic Environmental Testing Procedures for Electrical and Electronic Products”).

Salt spray test chamber severity:

1. The severity of the test is determined by the number of cycles that consist of the spray time and the storage time after each spray under hot and humid conditions.

2. The relevant standards should be selected from one of the following two severity levels:

a. Severity Level 1: After 7 days of spraying, store 7 days in hot and humid conditions for one cycle. A total of four cycles.

b. Severity 2: Store for 20 to 22 hours in a hot and humid condition after 2 hours per spray. A total of three cycles.

The test sample shall be subject to the specification, appearance, dimensions and function test specifications. The test shall be based on the acceptance or rejection of the test sample.

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