Siemens SITRANS P Brochure & Specs page 68

SITRANS P measuring instruments for pressure
Transmitters for gage, absolute and differential pressure, flow and level
DS III, DS III PA and DS III FF series
Technical description
of the measuring cell (7), thus protecting the silicon pressure
sensor from overloads.
Parameterization DS III
Depending on the version, there are a range of options for pa-
rameterizing the pressure transmitter and for setting or scanning
2
the parameters.
Parameterization using the input keys (local operation)
With the input keys you can easily set the most important param-
eters without any additional equipment.
Parameterization using HART communication
Parameterization using HART communication is performed with
a HART communicator or a PC.
Communication between a HART communicator and a pressure transm.
When parameterizing with the HART communicator, the connec-
tion is made directly to the 2-wire system.
HART communication between a PC communicator and a pressure
transmitter
When parameterizing with a PC, the connection is made through
a HART modem.
The signals needed for communication in conformity with the
HART 5.x or 6.x protocols are superimposed on the output cur-
rent using the Frequency Shift Keying (FSK) method.
Adjustable parameters, DS III HART
Parameters
Start of scale
Full-scale value
Electrical damping
Start-of-scale value without application
of a pressure ("Blind setting")
Full-scale value without application of a
pressure ("Blind setting")
Zero adjustment
Current transmitter
Fault current
Disabling of keys, write protection
Type of dimension and actual dimension x
Characteristic (linear / square-rooted)
Input of characteristic
Freely-programmable LCD
Diagnostics functions
2/68 Siemens FI 01 · 2009
© Siemens AG 2008
Input keys HART com-
(DS III HART) munication
x x
x x
x x
x x
x x
x x
x x
x x
1)
x x
x
2) 2)
x x
x
x
x
1)
Cancel apart from write protection
2)
Only differential pressure
Diagnostic functions for DS III HART
• Zero correction display
• Event counter
• Limit transmitter
• Saturation alarm
• Slave pointer
• Simulation functions
• Maintenance timer
Available physical units of display for DS III HART
Table style: Technical specifications 2
Physical variable Physical dimensions
Pressure (setting can also Pa, MPa, kPa, bar, mbar, torr, atm, psi,
be made in the factory) g/cm
mmH
Level (height data) m, cm, mm, ft, in
3
Volume m , dm
gallon, bushel, barrel, barrel liquid
Mass g, kg, t, lb, Ston, Lton, oz
3
Volume flow m /d, m
3
ft /s, US gallon/min, US gallon/s
Mass flow t/d, t/h, t/min, kg/d, kg/h, kg/min, kg/s, g/d,
g/h, g/min, g/s, lb/d, lb/h, lb/min, lb/s,
LTon/d, LTon/h, STon/d, STon/h, STon/min
Temperature K, °C, °F, °R
Miscellaneous %, mA
Parameterization through PROFIBUS PA interface
Fully digital communication through PROFIBUS PA, profile 3.0, is
particularly user-friendly. The PROFIBUS puts the DS III PA is in
connection with a process control system, e.g. SIMATIC PSC 7.
Communication is possible even in a potentially explosive envi-
ronment.
For parameterization through PROFIBUS you need suitable soft-
ware, e.g. SIMATIC PDM (Process Device Manager).
Parameterization through FOUNDATION Fieldbus Interface
Fully digital communication through FOUNDATION Fieldbus is
particularly user-friendly. Through the FOUNDATION Fieldbus
the DS III FF is connected to a process control system. Commu-
nication is possible even in a potentially explosive environment.
For parameterization through the FOUNDATION Fieldbus you
need suitable software, e.g. National Instruments Configurator.
Adjustable parameters for DS III PA and FF
Parameters Input keys
(DS III HART)
Electrical damping x
Zero adjustment (correction of x
position)
Key and/or function disabling x
Source of measured-value dis- x
play
Physical dimension of display x
Position of decimal point x
Bus address x
Adjustment of characteristic x
Input of characteristic
Freely-programmable LCD
Diagnostics functions
2 2
, kg/cm , inH O, inH O (4 °C),
2 2
O, ftH O (20 °C), inHg, mmHg
2 2
3 3 3 3
, hl, yd , ft , in , US gallon, lmp.
3 3 3 3
/h, m /s, l/min, l/s, ft /d, ft /min,
PROFIBUS PA and
FOUNDATION
Fieldbus interface
x
x
x
x
x
x
x
x
x
x
x