NI 9921/9922 Outdoor IP Enclosure Installation Guide 10 ni.com
Understanding IP Ratings
Proper use and installation of an NI WLS-9000 Series device in an NI 9921/9922 outdoor IP enclosure
provides a minimum IP rating of IP54 from harsh outdoor and industrial environments. An IP rating of
IP54 protects against entry by dust particles and splashing water from all directions.
The two-digit ingress protection (IP) rating is defined by the IEC 60529 standard and specifies the
degree to which the enclosures protect against the intrusion of solid particles (represented by the
first digit) and water (represented by the second digit).
Table 2 lists the degree of protection.
Environmental Management
NI is committed to designing and manufacturing products in an environmentally responsible manner.
NI recognizes that eliminating certain hazardous substances from our products is beneficial to the
environment and to NI customers.
For additional environmental information, refer to the NI and the Environment Web page at
ni.com/environment. This page contains the environmental regulations and directives with which
NI complies, as well as other environmental information not included in this document.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of the product life cycle, all products must be sent to a WEEE recycling
center. For more information about WEEE recycling centers, National Instruments WEEE initiatives,
and compliance with WEEE Directive 2002/96/EC on Waste and Electronic Equipment,
visit ni.com/environment/weee.
Table 2. IP Ratings
First Number
(Protection Against Solid Objects)
Second Number
(Protection Against Water)
0No protection 0No protection
1Protects against objects greater than 50 mm 1Protects against vertically dripping water
2Protects against objects greater than 12.5 mm 2Protects against direct sprays up to 15° from vertical
3Protects against objects greater than 2.5 mm 3Protects against direct sprays up to 60° from vertical
4Protects against objects greater than 1 mm 4Protects against direct sprays from all angles
5Dust-protected (no harmful deposit) 5Protects against low pressure water jets
6Dust-tight 6Protects against high pressure water jets
— — 7 Immersible in water up to 1 m
— — 8 Immersible in water beyond 1 m
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