National Instruments NI 9217 Operating Instructions Manual page 5

only. Follow these guidelines if you are installing the NI 9217 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.
Caution
unless power has been switched off or the area is known
to be nonhazardous.
Caution
switched off or the area is known to be nonhazardous.
Caution
suitability for Class I, Division 2.
Caution
in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.
Caution
be within the following limit:
Capacitance .......................... 0.2 μF max
© National Instruments Corp.
Do not disconnect I/O-side wires or connectors
Do not remove modules unless power has been
Substitution of components may impair
For Zone 2 applications, install the system
For Zone 2 applications, connected signals must
5 NI 9217 Operating Instructions and Specifications