Yokogawa EXA SC202 2-Wire Conductivity Transmitter/Analyzer - Manuel (Page 12)

2-5 Spécifications
Stamp Company :
Stamp Certification Institute :
Signature :
Remarks : Model EXA SC202S-A Model EXA SC202S-N
Title : Installation Drawing SC202S CSA Number : FF1-SC202S-00
Page : 3 of 10 Revision : 2.4
S
af
e
ar
ea
Vm
ax
=
31
.5
Vo
ltDC
Im
ax
=
1
00
m
A
Pm
ax
=
1
.2
Wat
t
C
S
A
ce
rt
if
ie
d
P
ow
er
Su
ppl
y
(H
A
R
T
c
om
pa
ti
bl
e)
Ou
tpu
t
S
up
pl
y
S
E
NS
OR
ter
m
in
als
11
-1
6
+ _ G
S
E
NS
O
R
te
rm
in
al
s
11
-16
Ha
za
rd
ou
s
ar
ea
Saf
e
ar
ea
+ _ G
Pr
ote
ct
iv
e
ea
rth
Pr
ot
ect
iv
e
e
ar
th
In
tri
ns
ic
al
ly
s
af
e d
es
ig
n
an
aly
zer
EX
A
SC
20
2S
+ _
Lo
ad
Re
sis
ta
nc
e
Im
ax
=
10
0
m
A
Vm
ax
=
3
1.5
Vo
ltDC
Ha
za
rd
ou
s
ar
ea
Pr
ot
ec
tiv
e
e
ar
th
+ _
24
vol
ts
DC
No
min
al
Supp
ly
Vo
lta
ge.
In
tri
ns
ic
al
ly
s
af
e d
es
ig
n
C
S
A
Ex
ia
C
la
ss
1,
Div
.1
, Gr
ou
p
AB
CD,
T4
f
or
am
bien
t te
m
p.
<
55
¡C
T 6
f or
a
m
bie
nt
te
m
p.
<
4
0¡
C
EX
A
SC
202
S
ana
lyz
er
CS
A
cer
tif
ied
s
af
et
y
ba
rr
ie
r or
p
ow
er
s
up
pl
y
wi
th
R
in
t=3
00
Ω
S
uita
ble
valu
es
ar
e:
(H
A
R
T
c
om
pa
ti
bl
e)
CS
A
E
x
ia
C
las
s1
, Di
v.
1,
Gr
oup
AB
CD,
T4
fo
r am
bien
t tem
p.
< 5
5¡
C
T
6
f or
a
m
bie
nt
t em
p.
<
4
0¡
C
F or
ele
ctr
ical
data:
se
e
tex
t b
elo
w.
Fo
r e
lec
tri
cal
d
ata:
see
tex
t be
lo
w.
Sui
tab
le
va
lu
es
are
:
•
Sensor is a thermocouples,
RTD
s, passive resistive switch devices, or is CSA entity approved and meet connection
requirements.
•
Electrical data of the EXA SC202S :
- Supply and output circuit (terminals + and -) Maximum input voltage V
max
= 31.5 V.
Maximum input
current I
max
= 100 mA.
Maximum input power
P
max
= 1.2 W.
Effective internal capacitance C
i
= 22
nF.
Effective internal inductance L
i
= 22
µ
H.
- Sensor input circuit (terminals 11 through 16): Maximum output voltage V
oc
=
14.4
V.
Maximum output current
I sc
= 12.8 mA.
Maximum allowed external capacitance C
a
= 103 nF.
Maximum allowed external inductance L
a
= 200 mH.
•
Barriers and power supply should be CSA certified. The specifications must not exceed the maximum values as shown in the diagram above. Installation should be in accordance with Canadian Electrical Code, Part I or CEC, Part I.
Maximum safe area voltage should not exceed 250 V
RMS
.
For
Class I,
Div.
2,
Group
ABCD
the
CSA
certified
barrier
is
not
required,
and
the
Sensor
input
circuit
(terminals
11
through
16)
is
non-
incendive
having
the
parameters
:
Maximum output voltage V
oc
= 14.4 V.
Maximum output current I
sc
= 12.8 mA.
Maximum allowed external capacitance C
a
= 1.4
µ
F.
Maximum allowed external inductance L
a
= 900 mH.
•
The Hand Held Communicator must be of a CSA certified intrinsically safe type in case it is used on the intrinsically safe circuit in the hazardous area, or of a CSA certified non-incendive type in case it is
used on the
non-incendive circuit in the hazardous area.
YOKOGAWA
EUROPE
B.V.
Date : 26/07/2004