![background image](http://html1.mh-extra.com/html/national-instruments/c-series/c-series_getting-started-manual_709154018.webp)
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for
U.S. or 230 V for Europe.
Caution
Do not connect the NI 9997 to signals or use
for measurements within Measurement Categories III
or IV.
Hazardous Locations
U.S. (UL)
Class I, Division 2, Groups A,
B, C, D, T4; Class I, Zone 2,
AEx nA IIC T4
Canada (C-UL)
Class I, Division 2, Groups A,
B, C, D, T4; Class I, Zone 2, Ex
nA IIC T4
Europe (ATEX) and
International (IECEx)
Ex nA IIC T4 Gc
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NI 9997 Getting Started Guide