Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 13)

IM 12D06A03-01E
Specifications 2-1
2-1. Specifications
A) Input specifications
: One inductive conductivity sensor and one
temperature sensor. Compatible with the
ISC40 series with integrated temperature sen-
sor. ISC202S: use with ISC40S
B) Input range
- Conductivity: 0 to 1999 mS/cm at 25 °C (77˚F)
reference temperature.
- Temperature: -20 to 140 °C (4 to 284˚F)
- Cable length: max. 60 mtr (200 feet)
10 mtr (35 feet) fixed sensor
cable + 50 mtr (165 feet)
WF10 extension cable.
Influence of cable can be
adjusted by doing an
AIR CAL with the cable
connected to a dry cell.
C) Functional specifications
Accuracy (under reference conditions):
(Output span is 0 – 100 μS/cm or more)
- Conductivity :
Linearity : ± (0.4 %FS + 0.3 μS/cm)
Repeatability : ± (0.4 %FS + 0.3 μS/cm)
- Temperature : ± 0.3ºC (0.6ºF)
Note: The following tolerance is added to the
above performance.
mA output tolerance: ±0.02 mA of
“4-20 mA”
- Step response ≤ 8 seconds for 90% (2
decade step).
E) Indicating range:
- Main display 0 to 1999 mS/cm (1 st
compensation)
- Message display 0 to 1999 mS/cm (2 nd
compensation),
Temperature -20 to 140 ºC
(0 to 280 ºF)
Concentration 0 to 100.0%
Temperature
compensation methods
NaCl, T.C., Matrix
mA- Output
Cell constant [cm -1 ]
Reference Temperature (ºC/ºF)
Software Release.
F) Transmission signal:
- General Isolated output of 4-20 mA
DC.Burn up (21 mA) or Burn
down (3.6 mA when HART ®
or distributor comm. is non-
used, 3.9 mA when HART ®
or distributor comm. is used)
or pulse of 21 mA to signal
failure.
- Hold Outputs may be set to hold
the last or a fixed value during
maintenance.
G) Transmission range:
- Conductivity Minimum span: 100 μS/cm
Maximum span: 1999 mS/cm
Setting value at 4 mA output:
≤ 90 % of setting value at 20
mA output
H) Serial Communication:
Bi-directional HART ® digital communication
superimposed on the 4-20 mA signal.
I) DD specification
The ISC202G(S) Device Description (DD)
is available enabling communications with
the hand held communicator and compatible
devices. For more information contact your
local Yokogawa sales offices.
Maximum load resistance :
For the ISC202G, see figure 2-1.
200Ω or less with the PH201G
50Ω or less with the SDBT
For the ISC202S, see figure 2-2.
1000
1150
800
600
400
200
150
0
10 20 18 17 30 40 0
Voltage (V)
Load Resistance (
Ω
)
Possible
F05.EPS
Fig.2-1 Supply voltage/ load diagram for the ISC202G
mA mA
mA mA
mA mA
2. GENERAL SPECIFICATIONS