Caution
For Division 2 and Zone 2 applications,
install a protection device between the input signal and
the input pin. The device must prevent the input Vsup-
to-COM voltage from exceeding 84 V if there is a
transient overvoltage condition.
Special Conditions for Hazardous Locations Use in
Europe and Internationally
The NI 9475 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO Certificate No. 07 ATEX 0626664X and is
IECEx UL 14.0089X certified. Each NI 9475 is marked II 3G
and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI 9475
in Gas Group IIC hazardous locations, you must use the device in
an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC
T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Caution
You must make sure that transient
disturbances do not exceed 140% of the rated voltage.
Caution
The system shall only be used in an area of
not more than Pollution Degree 2, as defined in
IEC 60664-1.
6
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NI 9475 Getting Started Guide
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