Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 20)

IM 12D06A03-01E
2-8 Specifications
2-4. Control Drawing ISC202S mA HART® Specification (ATEX)
ISC 202S (Inductive Conductivity transmitter)
Safe area
U o = 31.5 Vo lt DC
Io = 100 mA
Po = 1.2 W att
EEx ia or ib C ertified R epeater
Pow er Supply
(HAR T C ompatible)
O utput
Supply
ISC 40S Sensor
term inals 11-17
(KEM A 00ATEX1067 X )
+
_
G
ISC 40S Sensor
term inals 11-17
(KEM A 00ATEX 1067 X)
Hazardous area Safe area
+
_
G
Functional
earth Functional
earth
Intrinsically safe design
C EN ELEC standard EEx ia IIC : T4 for ambient temp. < 55°C
T6 for ambient temp. < 40°C
C ertificate nr. KEM A 06ATEX 0222 X
ISC 202S
+
_
Load
R esistance
EEx ia or ib
C ertified safety barrier or pow er
w ith R int=300
:
Io = 100 mA
Uo = 31.5 Vo lt DC
Hazardous area
Functional
earth
+
_
24 volts D C N ominal
Supply V oltage.
Intrinsically safe design
C EN ELEC standard EEx ia IIC : T4 for ambient temp. < 55°C
T6 for ambient temp.< 40°C
C ertificate nr. KEM A 06ATEX 0222 X
(HAR T compatible)
(Indutive C onductivity transmitter)
Zone 0 or 1
Zone 0 or 1
・ Electrical data of the ISC202S.
- Supply and output circuit (terminals + and -):
Maximum input voltage U
i
= 31.5 V. Maximum input current I
i
= 100 mA.
Maximum input power P
i
= 1.2 W.
Effective internal capacitance C
i
= 22 nF.
Effective internal inductance L
i
= 35 PH.
- Sensor input circuit (terminals 11 through 17):
Maximum output voltage U
o
= 14.4 V. Maximum output current I
o
= 20 mA.
Maximum allowed external capacitance C
o
= 600 nF (for ISC202S-A),
C
o
= 3.5 PF (for ISC202S-N)
Maximum allowed external inductance L
o
= 88 mH (for ISC202S-A),
L
o
= 200mH (for ISC202S-N)
・ Barriers and power supply specification must not exceed the maximum values as
shown in the diagram above. These safety descriptions cover most of the commonly
used industry standard barriers, isolators and power supplies.
・ The Hand Held Communicator must be of a ATEX certified intrinsically safe type in
case it is used on the intrinsically safe circuit in the hazardous area or of a ATEX
certified non-incendive type in case it is used in the non-incendive circuit in the
hazardous area.