NI 9472/9474
6
ni.com
Caution
For Zone 2 applications, install a protection
device between the V
s
u
p
and COM terminals on the
NI 9472/9474. The device m
u
st prevent the inp
u
t
V
s
u
p
-to-COM voltage from exceeding 42 V if there is a
transient overvoltage condition.
Special Conditions for Hazardous Locations Use in Europe
This eq
u
ipment has been eval
u
ated as EEx nC IIC T4 eq
u
ipment
u
nder DEMKO Certificate No. 03 ATEX 0324020X. Each mod
u
le
is marked
II 3G and is s
u
itable for
u
se in Zone 2 hazardo
u
s
locations. If yo
u
are
u
sing the NI 9472/9474 in Gas Gro
u
p IIC
hazardo
u
s locations or in ambient temperat
u
res of
–40 °C
≤
Ta
≤
70 °C, yo
u
m
u
st
u
se the device in an NI chassis that
has been eval
u
ated as EEx nC IIC T4, Ex nA IIC T4, or
Ex nL IIC T4 eq
u
ipment.
