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Industrial PC – IP Ratings Explained

IP codes, as defined in the international standard BS EN 60529:1992, classify the degree of protection against intrusion from foreign objects such as solid objects, dirt, moisture, etc., in electrical enclosures. This rating system is designed to give you a more detailed description than terms such as waterproof are able to provide, in order that you will be able make an informed decision as to the suitability of the product for its intended application. This is particularly important for items such as our industrial PCs which may be used in more rigorous environments.

What do the numbers in an IP Rating stand for?

The digits that follow IP each have a specific meaning and indicate conformity with specific conditions, as defined in the tables below. The first digit indicates the level of protection that the enclosure provides against access to hazardous parts and the ingress of solid foreign objects. The second digit indicates the level of protection of the equipment inside the enclosure against harmful ingress of liquids.

First Digit – Solids

Level Object size protected against Effective against
0 No protection against contact and ingress of object
1 >50 mm Any large surface of the body, such as the back of the hand, but noprotection against deliberate contact with a body part
2 >12.5 mm Fingers or similar objects
3 >2.5 mm Tools, thick wires, etc
4 >1 mm Most wires, screws, etc
5 Dust Protected Ingress of dust is not entirely prevented but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment; complete protection against contact
6 Dust Tight No ingress of dust; complete protection against contact

Second Digit – Liquids

Level Protected Against Effective Against
0 Not protected
1 Dripping water Dripping (vertically falling drops) shall have no harmful effect
2 Dripping water when tilted up to 15″ Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position
3 Spraying water Water falling as spray at any angle up to 60° from the vertical shall have no harmful effect
4 Splashing water Water splashing against the enclosure from any direction shall have no harmful effects
5 Water jets Water projected by a nozzle (6.3mm) against the enclosure from any direction shall have no harmful effects
6 Powerful water jets Water projected in powerful jets (12.5mm nozzle) against the enclosure from any direction shall have no harmful effects
7 Immersion up to 1m Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1m of submersion)
8 Immersion beyond 1m The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. Normally this will mean that the equipment is hermetically sealed. However, with certain types of equipment, it can mean water can enter but only in such a manner that it produces no harmful effects.

The Seiki’s industrial touch screen PC solution is IP66 rated which means it is protected from total dust ingress and protected from high pressure water jets from any direction.

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