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National Instruments Corp.
5
NI 9421/9423
Figure 1.
NI 9932
Connector Backshell
Safety Guidelines for Hazardous Locations
The NI 9421/9423 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, and Ex 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 9421/9423 in a potentially explosive environment.
Not following these g
u
idelines may res
u
lt in serio
u
s inj
u
ry or
death.