National Instruments NI 9481 - Manual (Page 5)

© National Instruments Corp. 5 NI 9481 Operating Instructions and Specifications
Safety Guidelines for Hazardous Locations
The NI 9481 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
hazardous locations; and nonhazardous locations only. Follow
these guidelines if you are installing the NI 9481 in a potentially
explosive environment. Not following these guidelines may result
in serious injury or death.
Caution Do not disconnect I/O-side wires or connectors
unless power has been switched off or the area is known
to be nonhazardous.
Caution Do not remove modules unless power has been
switched off or the area is known to be nonhazardous.
Caution Substitution of components may impair
suitability for Class I, Division 2.
Caution For Zone 2 applications, install the system
in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.