IP Rated Enclosures in the Central Carolina Scale Electronic Scale
Catalog
IP Numbers Ratings
The scope of protection
(degree of protection) of the enclosure housing is demonstrated
using
standardized test methods. In the following, the scope of protection
is referred to as the degree of protection of the housing. A designation
system is used to classify different types of housing according
to their degree of protection. The designation system consists of
the code letters IP followed by two characteristic numerals. These
characteristic numerals are determined using tables.
The first characteristic
numeral indicates the level of protection against contact and foreign
bodies, while the second indicates the protection provided by the
housing to prevent the penetration of water. The following tables
contain short descriptions and definitions of the individual characteristic
numerals of the IP code
EP Dust proof, not protected from moisture
or water
IP65 Dust proof, protected from splashes and low-pressure
jets
IP66 Dust proof, protected from strong water jets
IP67 Dust proof, protected from temporary immersion in water
1 meter deep for 30 minutes
IP68 Dust proof, protected from continuous immersion in water
under more severe conditions than IP67
IP69K Dust proof, protected from water during high pressure/steam
cleaning (not submersible)
Meaning of the First
Characteristic Numeral
The first characteristic numeral indicates the extent to which
the housing prevents people from
accessing (touching) hazardous parts. This protection is provided
by preventing or limiting a
body part or an object held by a person from penetrating into the
housing. At the same time, the
housing protects equipment by preventing the penetration of solid
foreign bodies.
|
First
Numeral
|
Description
|
Definition
|
|
0
|
Non-protected |
|
|
1
|
Protected against solid foreign
objects 50 mm diameter and larger |
The object probe, sphere of 50 mm shall not fully
penetrate |
|
2
|
Protected against solid foreign
objects 12.5 mm diameter and
larger |
The object probe, sphere of 12.5 mm shall not
fully penetrate |
|
3
|
Protected against solid foreign
objects 2.5 mm diameter and larger |
The object probe, sphere of 2.5 mm shall not fully
penetrate |
|
4
|
Protected against solid foreign
objects 1.0 mm diameter and larger |
The object probe, sphere of 1.0 mm shall not fully
penetrate |
|
5
|
Dust Protected |
Ingress of dust is not totally prevented, but
dust shall not penetrate in a quantity to interfere with satisfactory
operation of the apparatus or to impair safety |
|
6
|
Dust-tight |
No ingress of dust |
Meaning of the Second
Characteristic Numeral
The second characteristic numeral indicates the degree of protection
of the enclosure housing in terms of potential damage to the equipment
caused by the penetration of water into the housing. A housing type
should only be given the first characteristic numeral (protection
against penetration) for a specific degree of protection if it also
meets the requirements of all lower degrees of protection. This
condition also applies to the second characteristic numeral (protection
against water) up to degree of protection 6K. However, a housing
type given the second characteristic numeral 7, 8 or 9K (protection
against steam cleaning) is not viewed as protected against jet-water
(characteristic numeral 5 or 6). This means that the housing does
not have to meet the conditions of characteristic numerals 5 or
6. Only a housing type with a double designation meets the conditions
for protection against both jet-water and submersion.
|
Second
Numeral
|
Description
|
Definition
|
|
0
|
Non-protected |
|
|
1
|
Protected against drips |
Vertically falling drops must not cause
damage. |
|
2
|
Protected against drips if the
housing is bent at an angle of 15° |
Vertically falling drops must not cause
damage if the housing is bent at an angle of 15° either
side of the vertical. |
|
3
|
Protected against spray-water |
Water that is sprayed at an angle of up to 60°
either side of the vertical must not cause damage. |
|
4
|
Protected against splash-water. |
Water that is splashed against the housing from
every direction must not cause damage |
|
4K
|
Protected against splash-water at increased pressure |
Water that is splashed against the housing from
every direction at increased pressure must not cause damage
(only applies to DIN 40050 Part 9 testing). |
|
5
|
Protected against jet-water |
Water that is sprayed against the housing as a
jet from every direction must not cause damage. |
|
6
|
Protected against strong jet-water. |
Water that is sprayed against the housing as a
strong jet from every direction must not cause damage |
|
6K
|
Protected against strong jet-water at increased
pressure |
Water that is sprayed against the housing as a
jet from every direction at increased pressure must not cause
damage (only applies to DIN 40050 Part 9 testing) |
|
7
|
Protected against the effects of
temporary submersion in water |
Water must not penetrate in a quantity, which
causes damage if the housing is temporarily submerged in water
under standard pressure and time conditions. |
|
8
|
Protected against the effects of
permanent submersion in water |
Water must not penetrate in a quantity, which
causes damage if the housing is submerged under water continuously
under conditions to be agreed between the manufacturer and user.
However, the conditions must be more stringent that those of
characteristic numeral 7. |
|
9K
|
Protected against water during high pressure/
steam cleaning |
Water that is sprayed against the housing from
every direction at very high pressure must not cause damage
(only applies to DIN 40050 Part 9 testing). |
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