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                      Expertise

                      Waterproof Level of Electronic Products

                      IP is the abbreviation of Ingress Protection. IP level is the protection grade of electrical equipment enclosure against ingress of foreign matter. Waterproof Level of electronic measuring instruments reflects their freedom from dampness and dusts at the same time. It is unavoidable for them to be exposed to heavy dampness and terrible dusty environments, especially when they are used in the open air. The capability of an instrument to be free from water or damp air is of vital importance to the normal operation and lifespan of the instrument. Therefore, the international standard IEC529 was established and is well recognized throughout the world. IPxx protection grade is comprised of two digits.The first digit denotes the level against the ingress of dust or foreign matter. The second denotes the level against the ingress of damp or water. The larger the number , the higher the level.

                      The first x denotes the protection leve against dust as follows:

                      Level 0: Without protection
                      Level 1: Free from solid objects larger than 50mm
                      Level 2: Free from solid objects larger than 12mm
                      Level 3: Free from solid objects larger than 2.5mm
                      Level 4: Free from solid objects larger than 1.0mm
                      Level 5: Preventing the gathering of harmful dusts and motes
                      Level 6: Free from dusts and motes completely.

                      The second digit denotes the protection level against water as follows:

                      Level 0. Without protection
                      Level 1. Protection against water drops on the enclosure, free from negative influences.
                      Level 2. Protection against water drops that come from within a 15-degree area from the vertical direction, free from negative influences.
                      Level 3. Protection against water sprayed from within a 60-degree area from the vertical direction, free from negative influences.
                      Level 4. Protection against water sprayed from any directions, free from negative influences.
                      Level 5. Protection against water flushed from any directions, free from negative influences.
                      Level 6. Protection against big waves from any directions, free from negative influences.
                      Level 7. Protection against ingress of water when soaked in water of 1m deep in a short time.
                      Level 8. Protection against ingress of water when sunk in water of certain pressure for a long time.

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