Tips of the Month - August, 2006

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	Tips of the Month August, 2006

Indication on front panel of panel mount controllers and recorders regarding degrees of protection

The following will introduce IP codes, since those are the means currently used to relate degrees of protection.

IP encoding is a system for classifying degrees of protection provided by a "enclosure" (a part providing protection of equipment against certain external influences and, in any direction, protection against direct contact), against the environment when in proximity to dangerous locations, and against penetration of solid objects or water. The encoding system is as follows.

1st Characteristic Numeral

Though this numeral is applicable for protection of personnel in addition to equipment, the table below describes only the degree of protection against solid foreign objects for electrical equipment.

2nd Characteristic Numeral

Refers to the degree of protection against penetration by water into electriclal devices. Descriptions of the degrees are included in the table below.

Supplementary and Additional Letters

The following are examples of how the coding scheme is used for our products.

For the UT551 Digital Indicating Controller
The code is IP55, indicating partial protection against dust, and protection against jets of water spraying from all directions.”
For the uR10000 Industrial Recorder
The code is IP54, indicating partial protection against dust, and protection against water spraying from all directions.

Further reading: JIS standard, JIS C 0920: 2003 (IEC 60529: 2001) (Issued by Japan Standards Assoc. )