Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer User Manual
Page 15
IM 12J05C01-01E
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
: Nominal 24 volt DC loop powered
DO202G :
up to 40 volts
DO202S :
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 :
JYokogawa HART® Modem F9197UB
J. Hand Terminal :
Rosemount HHT 275/375
K. Other Control systems
:
Yokogawa PRM, Rosemount AMS,
Siemens PDM
L. Output span
:
There are three output modes in which the output
span can be freely selected: ppm (mg Oxygen
per kg of water):
0 - 50 ppm with minimum span of 1 ppm; ppb
(mg Oxygen per 1000 kg of water): 0 - 1999 ppb
with minimum span of 25 ppb and % Saturation:
0 - 600 % with minimum span of 10 %
M. Cable specification
0.5 mm diameter or 24 AWG over maximum
length of 1500 m
N. DD specification
The DO202 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
profile class B based on EN 50170
and DIN 19245 part 4
H. GSD file:
The actual file can be downloaded
from www.profibus.com Configu-
ration: 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
H. Function blocks:
3 x AI, Transducer, Resource
I. Files:
Actual file can be downloaded from
our homepage
J. Configuration:
locally with 6 keys
K. Software:
National Instruments:
NI-FBUS configurator
2-4 General Specifications
mA