Yokogawa EXA PH202 2-Wire pH/ORP Analyzer - Manuel (Page 16)

IM 12B6C3-F-E
2-10 Spécifications
Stamp Company :
Stamp Certification Institute :
Signature :
Remarks : Model EXA PH202S-F & PH202S-P No revision to drawing without prior FM Approval
Title : FM Control Drawing PH202S-F & PH202S-P (Intrinsic safe Fisco concept) Number : FF1-PH202S-00
Page : 7 of 10 Revision : 5.4
YOKOGAWA
EUROPE
B.V.
Date : 01/07/2004
〈
S
en
so
r(
s)
a
re
o
f a
p
as
si
ve
ty
pe
to
b
e r
eg
ar
de
d
as
’s
im
pl
e a
pp
ar
at
us
’, d
ev
ic
es
w
hi
ch
ne
ith
er
s
to
re
n
or
ge
ne
ra
te
v
ol
ta
ge
s
ov
er
1
.5
V
, c
ur
re
nt
s o
ve
r
0.
1
A
, p
ow
er
o
ve
r
25
m
W
o
r e
ne
rg
y
ov
er
2
0
µJ
, o
r a
re
F
M
A
pp
ro
va
ls
e
nt
ity
a
pp
ro
ve
d
an
d m
ee
t c
on
ne
ct
io
n
re
qu
ire
m
en
ts
.
〈
E
le
ct
ric
al
d
at
a o
f t
he
E
X
A
P
H
20
2S
-F
&
P
H
20
2S
-P
:
-
S
up
pl
y c
ircu
it:
V
m
ax
=
17
,5
V
; I
m
ax
=
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
;
It=
32
.3
m
A
; C
a=
60
0 n
F
; L
a=
36
m
H
〈
A
ny
F
M
A
pp
ro
ve
d
F
IS
C
O
b
ar
rie
r
m
ay
b
e
us
ed
th
at
m
ee
ts
th
e
fo
llo
w
in
g r
eq
ui
re
m
en
ts
:
V
oc
o
r V
t ≤
1
7,
5
V
; I
oc
o
r
It
≤ 3
80
m
A
; P
oc
o
r P
t ≤
5
,3
2 W
W
he
n i
ns
ta
lli
ng
th
is
e
qu
ip
m
en
t, f
ol
lo
w
th
e m
an
uf
ac
tu
re
rs
in
st
al
la
tio
n
dr
aw
in
g.
In
sta
lla
tio
n s
ho
ul
d
be
in
a
cc
or
da
nc
e w
ith
A
N
S
I/I
S
A
R
P
1
2
.0
6.
01
In
sta
lla
tio
n o
f I
nt
rin
si
ca
lly
S
af
e
S
ys
te
m
s f
or
H
az
ar
do
us
(
Cl
as
si
fie
d)
L
oc
at
io
ns
a
nd
th
e N
at
io
na
l E
le
ct
ric
al
C
od
e (
AN
SI
/N
F
P
A
7
0)
.
A
ss
oc
ia
te
d
ap
pa
ra
tu
s
c
on
ne
ct
ed
to
th
e
F
IS
C
O
b
ar
rie
r m
us
t n
ot
u
se
o
r g
en
er
at
e
m
or
e t
ha
n 2
50
V
rm
s
or Vdc.
〈
R
es
is
ta
nc
e
be
tw
ee
n
F
IS
C
O
I
nt
rin
si
ca
lly
S
af
e
G
ro
un
d a
nd
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 t
he
in
te
rc
on
ne
ct
io
n o
f 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
fo
r s
uc
h
in
te
rco
nn
ec
tio
n
is
th
at
th
e
vo
lta
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 i
nt
rin
si
ca
lly
s
af
e,
c
on
si
de
rin
g f
au
lts
, m
us
t b
e
eq
ua
l t
o
or
g
re
at
er
th
at
th
e
vo
lta
ge
(
Vo
c,
V
t)
, t
he
c
ur
re
nt
(
Io
c,
It
)
an
d t
he
p
ow
er
(
P
oc
, P
t)
w
hi
ch
c
an
b
e
pr
ov
id
ed
e b
y t
he
F
M
ap
pr
ov
ed
F
IS
C
O
b
ar
rie
r.
In
a
dd
iti
on
, t
he
m
ax
im
um
u
np
ro
te
ct
ed
r
es
id
ua
l c
ap
ac
ita
nc
e
(Ci
)
an
d
in
du
ct
an
ce
(L
i) o
f e
ac
h a
pp
ar
at
us
(
ot
he
r
th
an
th
e
te
rmi
na
to
r)
c
on
ne
ct
ed
to
th
e
F
ie
ld
bu
s
m
us
t b
e l
es
s
th
an
o
r e
qu
al
to
5
nF
an
d 1
0
H
r
es
pe
ct
iv
el
y.
〈
In
e
ac
h
I.S
. F
ie
ld
bu
s
se
gm
en
t o
nl
y
on
e a
ct
iv
e s
ou
rc
e,
n
or
ma
lly
th
e F
M
A
pp
ro
ve
d F
IS
C
O
b
ar
rie
r,
is
a
llo
w
ed
to
p
ro
vi
de
th
e
ne
ce
ss
ar
y
po
w
er
fo
r
th
e
F
ie
ld
bu
s
sy
st
em
. A
ll
ot
he
r e
qu
ip
m
en
t c
on
ne
ct
ed
to
th
e b
us
c
ab
le
h
as
to
be
p
as
si
ve
(
no
t p
ro
vi
di
ng
e
ne
rg
y t
o t
he
s
ys
te
m
),
e
xc
ep
t t
o
a l
ea
ka
ge
c
ur
re
nt
o
f 5
0
A
fo
r
ea
ch
c
on
ne
ct
ed
de
vi
ce
. S
ep
er
ate
ly
p
ow
er
ed
e
qu
ip
m
en
t n
ee
ds
a
g
al
va
ni
c
is
ol
at
io
n t
o i
ns
ur
e
th
at
th
e I
.S
. F
ie
ld
bu
s c
irc
ui
t
re
m
ai
ns
p
as
siv
e.
〈
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
pa
ra
m
et
er
s:
Lo
op
r
es
is
ta
nc
e
R
: 1
5
15
0
/k
m
; I
nd
uc
ta
nc
e
pe
r u
ni
t l
en
gt
h L
: 0
,4
1
m
H
/k
m
C
ap
ac
ita
nc
e p
er
u
ni
t l
en
gt
h
C
: 8
0
20
0 n
F
/km
(C
=
C
li
ne
/li
ne
+
0
,5
C
li
ne
/s
cr
ee
n i
f b
ot
h l
in
e
ar
e
flo
at
in
g)
(C
=
C
li
ne
/li
ne
+
C
li
ne
/s
cr
ee
n i
f t
he
s
cr
ee
n i
s c
on
ne
ct
ed
to
o
ne
li
ne
)
Le
ng
th
o
f s
pu
r
ca
bl
e:
m
ax
. 3
0
m
Le
ng
th
o
f t
ru
nk
c
ab
le
: m
ax
. 1
k
m
Le
ng
th
o
f s
pl
ic
e
: m
ax
. 1
m
W
A
R
NI
NG
-
S
ub
st
itu
tio
n o
f c
om
po
ne
nt
s
m
ay
im
pa
ir
In
tri
ns
ic
S
af
et
y
-
T
o
pr
ev
en
t i
gn
iti
on
o
f f
la
m
m
ab
le
o
r
co
m
bu
st
ib
le
a
tm
os
ph
er
es
, d
is
co
nn
ec
t p
ow
er
b
ef
or
e
se
rv
ic
in
g
or
r
ea
d,
un
de
rs
ta
nd
a
nd
a
dh
er
e t
o t
he
m
an
uf
ac
tu
re
rs
liv
e m
ai
nt
en
an
ce
p
ro
ce
du
re
s.
U
nc
la
ss
ifi
ed
L
oc
at
io
n
C
la
ss
ifi
ed
L
oc
at
io
n
D
iv
is
io
n
1
F
M
A
ppr
ove
d
F
IS
C
O
b
ar
rie
r
V
oc
(V
t)
¡Ü
17
,5
V
Ioc
(I
t)
¡Ü
3
80
mA
P
oc
(P
t)
¡Ü
5,
32
W
F
M
A
ppr
ove
d
T
er
m
ina
tor
R
=
90.
.1
00
C
=
0.
.2,
2
F
E
X
A
P
H
202
S
-F
&
P
H
20
2S
-P
S
ens
or
C
onn
ec
tions
Max
. ca
bl
ele
ng
th:
6
0
mt
r.
C
abl
e
di
a.
:
3
1
2
mm.
F
M
C
las
s
I, D
IV.
1
, Gr
oup
A
BC
D
T
3B
fo
r
amb
ie
nt
temp
.
≤
55
ϒ
C
T
4
for
am
bi
en
t te
m
p.
≤
4
0
ϒC