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Protection against contact and foreign bodies Personal protection against access to dangerous parts with
Not usual for pressure gauges and temperature measuring instruments ---
Protection against ingress of solid bodies over 2.5mm in diameter (small particles). Tool
Protection against ingress of solid bodies over 1mm in diameter (grain-sizedl particles). Wire | 1mm dia.
Protection against harmful deposits of dust. The ingress of dust is not totally prevented, but the dust cannot enter in an amount sufficient to interfere with the satisfactory operation of the equipment enclosed. Wire | 1mm dia.
Protection against ingress of dust (dustproof). Wire | 1mm dia.
 
Degree of protection
Brief description Definition
No protection Not usual for pressure gauges and temperature measuring instruments
Protection against drops water Vertically falling drops of water shall have no damaging effect.
Protection against drops
water when case in titled up to 15˚
Vertically falling drops shall have no damaging effect when the case in titled up to 15˚ from the vertical to either side.
Protection against spraying water Water spraying at an angle up to 60˚ to either side from the vertical shall have no damaging effect.
Protection against spraying water Water spraying against the case from all direction shall have no damaging effect.
Protection against water jets Water spraying as jet against the case from all directions shall have no damaging effect.
Protection against strong water jets Water as strong jet directed against the case from all directions shall have no damaging effect.
Protection against immersion in water for a limited period of time Water must not enter in a quantity which cause a damaging effect when the case is immersed in water under conditions of agreed pressure and time.
Protection against continuous submersion in water Water must not enter in quantities which can cause damage when the case is continuously immersed in water under conditions agreed between manufacturer and user. The conditions must be more stringent than those stipulated under Code digit 7.