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IP protection indexes indicate the protection level of a device against outside agents.
It consists of two numbers after the prefix IP: the first is the index of protection against solids and dust; the second is the index of
protection against liquids.
Three numbers are used in some countries. In this case, the third number is the mechanical index of protection.
Example: the protection index IP45 indicates a protection level of 4 against solids and a protection level of 5 against liquids.
Attention: these indexes are valid under standard ambient conditions.
Gefran Melt transducers and transmitters are built with protection index IP65.
Protection against solid objects
1
number
Description
st
0
No protection
Protection against solid objects larger
1
than 50mm
Protection against solid objects larger
2
than 12mm
Protection against solid objects larger
3
than 2.5mm.
Protection against solid objects larger
4
than 1.0mm
5
Protection against dust
6
High protection against dust
Protection against liquids
1
number
Description
st
0
No protection
1
Protection against drops of water.
Protection against drops of water at
2
angle up to 15°.
3
Protection against water vapor.
4
Protection against sprays of water.
5
Protection against jets of water.
6
Protection against waves.
7
Protection against immersion.
8
Protection against continuous immersion
38
12. APPENDIX B: IP PROTECTION
Definition
No special protection
A part of the body with large surface, such as a hand (protection does not include
intentional access).
Solid objects with diameter exceeding 50mm.
Finger or similar objects less than 80mm in length.
Solid objects with diameter exceeding 12mm.
Tools, wires, etc., with diameter or thickness exceeding 2.5mm.
Solid objects with diameter exceeding 2.5mm.
Wires or strips with thickness exceeding 1.0mm.
Solid objects with diameter exceeding 1.0mm
Dust is not completely blocked, but does not enter in amounts sufficient to
prevent good operation of the device.
No entry of dust.
Definition
No special protection
Vertically dripping water must not have harmful effects.
Vertically dripping water must not have harmful effects when the device is rotated
vertically up to 15°.
Sprays of vapor that fall at an angle up to 60° from vertical must not have harmful
effects.
Water sprayed on the housing from any direction must not have harmful effects.
A jet of water pumped from any direction must not have harmful effects.
Water from sea waves or a strong jet of water from any direction must not have harmful
effects.
Entry of water in an amount sufficient to damage the device must not be possible when
the device is immersed in water for a defined length of time under defined pressure
conditions.
The device may be immersed in water for an extended length of time under conditions
specified by the manufacturer.
80618_MAN_IO-LINK IMPACT_12-2019_ENG
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