Yokogawa EXA SC202 2-Wire Conductivity Transmitter/Analyzer - Manuel (Page 16)

IM 12D7B3-F-E
2-9 Spécifications
Stamp Company :
Stamp Certification Institute :
Signature :
Remarks : Model EXA SC202S-F Model EXA SC202S-P No revision to drawing without prior FM Approval
Title : FM Control Drawing SC202S-F & SC202S-P (Intrinsic safe Fisco concept) Number : FF1-SC202S-00
Page : 7of 10 Revision : 2.4
YOKOGAWA
EUROPE
B.V.
Date : 26/07/2004
〈
S
enso
r(
s)
a
re o
f a p
as
si
ve
type to
be r
egar
ded
a
s ’
si
mp
le
appa
ratu
s’,
d
evi
ces wh
ich
neith
er
sto
re
nor
gener
at
e
volta
ges
ove
r
1.
5
V,
cu
rre
nts
ov
er
0
.1
A,
po
wer
ov
er
25
mW
or
energ
y
ove
r
20
µJ,
o
r a
re
F
M
A
pp
ro
va
ls
e
nt
ity a
pp
ro
ve
d a
nd
m
ee
t c
on
ne
ct
io
n r
eq
ui
re
m
en
ts
.
〈
E
le
ct
ric
al
d
at
a
of
th
e E
X
A
S
C
20
2S
-F
&
S
C
20
2S
-P:
-
S
up
pl
y c
irc
ui
t:
V
m
ax
=1
7,
5
V
; I
ma
x=
38
0 m
A
; P
i=
5,
32
W
; C
i=
73
7 p
F
; L
i=
2.
6
µH.
-
S
en
so
r
in
pu
t c
irc
ui
t:
V
t=
14
.4
V
; I
t=
12
.8
m
A
; C
a=
10
3
nF
; L
a=
20
0 m
H
〈
A
ny
F
M
A
pp
ro
ve
d
F
IS
CO
b
ar
rie
r
m
ay
b
e
us
ed
th
at
m
ee
ts
th
e
fo
llo
w
in
g
re
qu
irem
en
ts
:
V
oc
or
V
t ≤
17,5
V
; I
oc
or I
t ≤
380
mA
; Po
c
or
Pt
≤
5,
32
W
W
he
n
in
sta
lli
ng
th
is
e
qu
ip
m
en
t,
fo
llo
w
th
e
m
an
uf
ac
tu
re
rs
ins
ta
lla
tio
n
dr
awi
ng
.
In
st
al
la
tio
n
sh
ou
ld
b
e
in
ac
co
rd
an
ce
w
ith
A
N
S
I/I
S
A
R
P
1
2.
06
.0
1
In
st
al
la
tio
n
of
In
tri
ns
ic
al
ly
S
af
e
S
ys
te
m
s
fo
r
Haza
rdou
s (
Cl
ass
ifi
ed)
L
oca
tions
a
nd the Na
tional El
ec
tr
ica
l Co
de (
ANS
I/NF
P
A 7
0)
.
A
ss
oci
ate
d
appar
atu
s
conn
ec
te
d
to
the
F
ISC
O
bar
rier
mu
st no
t u
se o
r g
enera
te
mo
re than
250 Vrms
or
Vd
c.
〈
R
es
is
ta
nc
e
b
et
we
en
F
IS
C
O
I
nt
rin
si
ca
lly
S
af
e G
ro
un
d
an
d e
ar
th
g
ro
un
d
m
us
t b
e
le
ss
th
an
1
.0
O
hm
.
〈
T
he
F
IS
C
O
c
on
ce
pt
a
llo
w
s
th
e
in
te
rc
on
ne
ct
io
n
of
s
ev
er
al
I.
S
. a
pp
ar
at
us n
ot
s
pe
ci
fic
al
ly
e
xa
m
in
ed
in s
uc
h
co
m
bi
na
tio
n.
T
he
c
rit
er
io
n f
or
s
uc
h
in
te
rco
nn
ec
tio
n i
s th
at
th
e v
ol
ta
ge
(V
m
ax
),
th
e c
ur
re
nt
(
Im
ax
) a
nd
th
e
po
w
er
(
P
i) w
hi
ch
I.
S
. a
pp
ar
at
us
c
an
r
ec
ei
ve
a
nd
r
em
ai
n
in
tr
in
si
ca
lly
s
af
e,
c
on
si
de
rin
g f
au
lts,
m
us
t b
e e
qu
al
to
or
g
reate
r
th
at
the
vo
ltage
(V
oc, Vt),
the curre
nt
(
Io
c,
It)
a
nd
th
e p
ower (
Po
c, Pt) w
hich
ca
n b
e
pro
vi
de
de
by
the
F
M
a
ppro
ved F
ISCO
barr
ie
r. In
a
dd
iti
on,
th
e m
ax
im
um
u
npr
ote
cted r
esi
dual capa
ci
ta
nc
e (C
i)
and i
nductance
(Li)
of eac
h a
ppara
tus (o
the
r than th
e
te
rmi
nato
r)
co
nnected to
th
e
F
ieldb
us
must
be l
es
s t
han o
r e
qual to 5
nF
an
d
10
H
r
es
pe
ct
iv
el
y.
〈
In
eac
h
I.S
. F
ie
ld
bu
s
se
gm
en
t o
nl
y
on
e
ac
tiv
e
so
ur
ce,
n
or
ma
lly
th
e
F
M
A
pp
ro
ve
d
F
IS
C
O
b
ar
rie
r,
is
al
lo
w
ed
to
pr
ov
id
e
th
e
ne
ce
ssa
ry
p
ow
er
fo
r
th
e
F
ie
ld
bu
s
sys
te
m.
Al
l o
th
er
e
qu
ip
m
en
t c
on
ne
ct
ed
to
th
e
bu
s
ca
bl
e
ha
s
to
be
passi
ve (
not pr
ovi
ding e
ner
gy to
the sys
te
m)
, exce
pt
to a
lea
kage cu
rre
nt
o
f 5
0
A
for e
ac
h conn
ec
te
d
de
vi
ce
. S
ep
er
at
el
y p
ow
er
ed
e
qu
ip
m
en
t n
ee
ds
a
g
al
va
ni
c i
so
la
tio
n t
o i
ns
ur
e t
ha
t t
he
I.
S
. F
ie
ld
bu
s c
ircu
it
re
m
ai
ns
p
as
si
ve
.
〈
T
he
c
ab
le
u
se
d
to
in
te
rco
nn
ec
t t
he
d
ev
ic
es
n
ee
ds
to
c
om
pl
y
w
ith
th
e
fo
llo
w
in
g
p
ar
am
et
er
s:
Loop
re
si
sta
nc
e R
: 1
5
1
50
/km
; Inductan
ce p
er
u
nit length
L
: 0
,4
1 mH/
km
C
ap
ac
itan
ce
p
er
u
ni
t l
en
gt
h C
: 8
0
20
0 n
F
/k
m
(C
=
C
li
ne
/li
ne
+
0
,5
C
li
ne/
sc
re
en
if
b
ot
h l
in
e a
re
fl
oa
tin
g)
(C
=
C
li
ne
/li
ne
+
C
li
ne
/s
cr
ee
n
if
th
e
sc
re
en
is
c
on
ne
ct
ed
to
o
ne
li
ne
)
Lengt
h o
f sp
ur
cab
le:
max.
30 m
Lengt
h
of
tr
unk
ca
ble:
ma
x.
1
km
Le
ng
th
o
f s
pl
ic
e :
m
ax
. 1
m
WA
RN
IN
G
-
S
ub
st
itut
io
n o
f c
om
po
ne
nt
s m
ay
im
pa
ir I
nt
rin
si
c S
af
et
y
-
T
o p
reve
nt
igniti
on
of f
lammabl
e
or
co
m
bus
tible a
tmo
sphe
res, d
is
co
nnect p
owe
r b
efo
re serv
ici
ng o
r r
ea
d,
unders
ta
n
d a
nd a
dhere
to
th
e manufa
cture
rs
liv
e
m
aint
en
anc
e p
roc
edure
s.
U
nc
la
ss
ifi
ed
L
oc
at
io
n
Clas
si
fied L
oca
tion
Divi
si
on
1
F
M
A
pp
ro
ve
d
F
IS
C
O
b
ar
rie
r
V
oc
(V
t)
¡Ü
17,
5
V
Io
c (
It)
¡Ü
38
0
m
A
P
oc
(P
t)
¡Ü
5
,3
2
W
F
M
A
pp
ro
ve
d
T
er
m
inat
or
R
=
9
0.
.1
00
C
=
0.
.2,
2
F
E
XA
S
C
20
2S
-F
&
S
C
202
S
-P
S
ens
or
C
on
ne
ct
io
ns
M
ax
. c
ab
lel
en
gt
h:
6
0
m
tr.
Ca
bl
e
di
a.
:
3
1
2
mm
.
F
M
C
la
ss I
, DIV
. 1,
G
rou
p
AB
CD
T
4 f
or
a
mb
ie
nt
tem
p.
≤
55
ϒ
C
T
6 for
a
mb
ie
nt
tem
p.
≤
40
ϒ
C