Safety Guidelines For Hazardous Locations - National Instruments 9472 Operating Instructions And Specifications

Safety Guidelines for Hazardous Locations

The NI 9472/9474 is suitable for use in Class I, Division 2,
Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2,
AEx nC IIC T4 and Ex nC IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are
installing the NI 9472/9474 in a potentially explosive environment.
Not following these guidelines may result in serious injury or death.
Caution
unless power has been switched off or the area is known
to be nonhazardous.
Caution
switched off or the area is known to be nonhazardous.
Caution
suitability for Class I, Division 2.
Caution
enclosure rated to at least IP 54 as defined by IEC 60529
and EN 60529.
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Do not disconnect I/O-side wires or connectors
Do not remove modules unless power has been
Substitution of components may impair
For Zone 2 applications, install the system in an
5 NI 9472/9474