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NI 9229/9239
6
ni.com
Caution
For Zone 2 applications, install a protection
device between the inp
u
t signal and the NI 9229/9239
inp
u
t terminal. The device m
u
st prevent the inp
u
t
channel-to-COM voltage from exceeding 85 V if there is
a transient overvoltage condition.
Caution
For Zone 2 applications, connected signals m
u
st
be within the following limit:
Capacitance .......................... 0.01
μ
F max
Special Conditions for Hazardous Locations Use in Europe
This eq
u
ipment has been eval
u
ated as Ex nA IIC T4 eq
u
ipment
u
nder DEMKO Certificate No. 07 ATEX 0626664X. 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 9229/9239 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.