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NI 9237 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 Division 2 and Zone 2 applications,
install the system in an enclosure rated to at least IP54
as defined by IEC/EN 60079-15.
Caution
For Division 2 and Zone 2 applications,
connected signals must be within the following limits.
Capacitance
0.2 μF maximum
Inductance
80 mH maximum
NI 9237 Getting Started Guide
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