Safety Guidelines For Hazardous Locations - National Instruments NI 9475 Getting Started Manual

Safety Guidelines for Hazardous Locations

The NI 9475 is suitable for use in Class I, Division 2, Groups A,
B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4
and Ex nA IIC T4 hazardous locations; and nonhazardous
locations only. Follow these guidelines if you are installing the
NI 9475 in a potentially explosive environment. Not following
these guidelines may result in serious injury or death.
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Do not disconnect I/O-side wires or
Caution
connectors unless power has been switched off or the
area is known to be nonhazardous.
Do not remove modules unless power has
Caution
been switched off or the area is known to be
nonhazardous.
Substitution of components may impair
Caution
suitability for Class I, Division 2.
For Division 2 and Zone 2 applications,
Caution
install the system in an enclosure rated to at least IP54
as defined by IEC/EN 60079-15.
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