NI 9411 Operating Instructions and Specifications
4
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Caution
S
u
bstit
u
tion of components may impair
s
u
itability for Class I, Division 2.
Caution
For Zone 2 applications, install the system
in an enclos
u
re rated to at least IP 54 as defined by
IEC 60529 and EN 60529.
Caution
For Zone 2 applications, install a protection
device between the V
s
u
p
terminal and the COM terminal.
The device m
u
st prevent the 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 Ex 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, in ambient temperat
u
res of –40 °C
Ta
70 °C. If yo
u
are
u
sing the NI 9411 in Gas Gro
u
p IIC hazardo
u
s locations, yo
u
m
u
st
u
se the device in an NI chassis that has been eval
u
ated as
Ex nC IIC T4, EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4
eq
u
ipment.
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