©
National Instruments Corp.
5
NI 9481 Operating Instructions and Specifications
Safety Guidelines for Hazardous Locations
The NI 9481 is s
u
itable for
u
se in Class I, Division 2, Gro
u
ps A, B,
C, D, T4 hazardo
u
s locations; Class I, Zone 2, AEx nC IIC T4
hazardo
u
s locations; and nonhazardo
u
s locations only. Follow
these g
u
idelines if yo
u
are installing the NI 9481 in a potentially
explosive environment. Not following these g
u
idelines may res
u
lt
in serio
u
s inj
u
ry or death.
Caution
Do
not
disconnect I/O-side wires or connectors
u
nless power has been switched off or the area is known
to be nonhazardo
u
s.
Caution
Do
not
remove mod
u
les
u
nless power has been
switched off or the area is known to be nonhazardo
u
s.
Caution
S
u
bstit
u
tion of components may impair
s
u
itability for Class I, Division 2.
Caution
For Zone 2 applications, install the system
in an enclos
u
re rated to at least IP 54 as defined by
IEC 60529 and EN 60529.
