©
National Instruments Corp.
3
NI 9237 Operating Instructions and Specifications
Safety Guidelines
Operate the NI 9237 only as described in these operating
instr
u
ctions.
Hot Surface
This icon denotes that the component may be
hot. To
u
ching this component may res
u
lt in bodily inj
u
ry.
Safety Guidelines for Hazardous Locations
The NI 9237 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 9237 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.
