© National Instruments Corp. 9 [c]FP-DO-403
•Do not use the [c]FP-DO-403 as the only isolating barrier
between human contact and working voltages higher than
250Vrms .
• Operate the [c]FP-DO-403 only at or below Pollution
Degree2. Pollution Degree 2 means that only nonconductive
pollution occurs in most cases. Occasionally, however, a
temporary conductivity caused by condensation must be
expected.
• Operate the [c]FP-DO-403 at or below Measurement
CategoryII. Measurement Category II is for measurements
performed on circuits directly connected to the low-voltage
installation. Thiscategory refers to local-level distribution,
such as that provided by a standard wall outlet.
Safety Guidelines for Hazardous Locations
The [c]FP-DO-403 is suitable for use in Class I, Division 2, Groups
A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC
T4 and Ex nA IIC T4 hazardous locations; and nonhazardous
locations only. Follow these guidelines if you are installing the
[c]FP-DO-403 in a potentially explosive environment. Failing to
follow these guidelines may result in serious injury or death.
Caution Make sure that all products you use in hazardous
locations are certified for such use. Refer to the product
label or visit ni.com/certification, search by model
number or product line, and click the appropriate link in
the Certification column.
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 Zone 2 applications, install the FieldPoint
system in an enclosure rated to at least IP54 as defined
by IEC 60529 and EN 60529.