Yokogawa EXA SC202 2-Wire Conductivity Transmitter/Analyzer User Manual
Page 17
IM 12D08B02-01E
2-4 Specifications
GB3836.13-1997 "Electrical apparatus for
explosive gas atmospheres Part 13: Repair and
overhaul for apparatus used in explosive gas
atmospheres".
GB3836.15-2000 "Electrical apparatus for
explosive gas atmospheres- Part 15: Electrical
installations in hazardous area (other than
mines)" .
GB3836.16-2006 "Electrical apparatus for
explosive gas atmospheres- Part 16: lnspection
and maintenance of electrical installation (other
than mines)".
mA-HART® communication
A. Input
: Two wire system 4-20 mA
B. Power supply
:
SC202G :
up to 40 volts
SC202S :
up to 31.5 volts
Note:
The transmitter contains a switched
power supply, drawing its energy
from the 0-4 mA section of the
signal. Consequently the 17 volt limit
is applied at 4 mA. The characteristic
of the unit is such that above about
7 mA on the output, the terminal
voltage can drop to 14.5 volts
without problem. (see figure 2-2)
C. Transmission:
Isolated output of 4 to 20 mA DC.
D. Signal
: Maximum load 425Ω at 24 VDC.
(see fi gure 2-1)
Burn to signal failure acc
NAMUR Recommendation NE43
(18.01.1994)
E. Operating range :
3.9 to 21mA
F. Communication
:
HART®, 1200 Baud, FSK modulated
on 4 to 20 mA signal
G. Configuration
: Local with 6 keys
H. Software :
Firmware based on Yokogawa stack.
I. Hardware :
Yokogawa HART® Modem F9197UB
J. Other Control systems
:
Yokogawa PRM, Rosemount
AMS, Siemens PDM
K. Hand Terminal :
Rosemount HHT 275/375
L. Other control systems:
Yokogawa PRM, Rose-
mount AMS, Siemens PDM
M. Output span
:
- Conductivity : min 0.01μS/cm, max. 1999 mS/
cm.
(max 90% zero suppression)
- Resistivity : min 0.001kΩ·cm, max. 999
MΩ·cm.
(max 90% zero suppression)
The instrument is user
mA
programmable for linear or non-
linear conductivity ranges.
N. Cable specification
:
0.5 mm diameter or 24 AWG over
maximum length of 1500 m
O. DD specification
:
The SC202 Device Description is
available enabling communications
with the Handheld Communicator
and compatible devices.
PROFIBUS-PA communications
A. Input signal:
Digital
B. Supply voltage:
9 to 32 V DC
C. Operating current:
26.0 mA
D. Operating values:
According to IEC 1158-2
E. Bus connection
:
Fieldbus interface base on
IEC1158-2 according to FISCO-
Model
F. Power supply:
Power supply is achieved depend-
ant on the application by means of
segment coupler
G. Data transfer:
According to PROFIBUS- PA pro-
file class B based on EN 50170 and
DIN 19245 part 4
H. GSD file:
The actual file can be downloaded
from www.profibus.com Configura-
tion: Local with 6 keys
I. Software:
Firmware based on Siemens
DPC31 stack.
J. Hardware:
PC- or PCMCIA-interfaces from
Siemens
K. Other control:
Siemens PDM systems
L Electrical
connection:
Terminals acc. to IEC 1158-2
M. Fieldbus-cable-types:
Twisted and shielded two wire
cable according to recommendation
based on IEC 1158-2 Cable
diameter: 6 to 12 mm (0.24 to 0.47
inch)
FOUNDATION FIELDBUS H1 communications
A. Input signal
: Digital
B. Supply voltage
: 9 to 32 V DC
C. Operating current
: 26.0 mA (base current)
D. Operating values
: According to IEC 1158-2
E. Bus connection
:
Fieldbus interface based on IEC
1158-2
according to FISCO-Model
F. Power supply
:
Power supply is achieved
dependant on application by means
of segment coupler
G. Data transfer:
FF specification Rev. 1.4 Basic
device