Flow Measurement
SITRANS F M
Transmitter TRANSMAG 2 with sensor 911/E
3/104
Siemens FI 01 · 2014
■
Overview
SITRANS F M TRANSMAG 2 with the SITRANS FM 911/E sensor
is a pulsed alternating field magnetic flowmeter where the mag-
netic field strength is much higher than conventional DC pulsed
magnetic flowmeters.
■
Benefits
• Wide range of sizes DN 15 to DN 1000 (½" to 40")
• Broad range of liner and electrode materials for extreme pro-
cess medias
• Fully welded construction provides a ruggedness that suits
the toughest applications and environments.
• Automatic reading of SmartPLUG for easy commissioning
• Simple menu operation with two-line display
• Comprehensiv self-diagnostic with selfmonitoring and internal
simulation
■
Application
The main applications of the SITRANS F M transmitter
TRANSMAG 2 can be found in the following sectors:
• Pulp and Paper industry
• Mining industry
The patented pulse alternating field technology is ideal for diffi-
cult applications like:
• High concentrated paper stock > 3 %
• Heavy mining slurries
• Mining slurries with magnetic particles.
• Low conductive medias
1
S/cm (0.1
S/cm depending on
medium)
■
Design
• Available for remote mounting
• PROFIBUS PA (profile 2.0) / HART communication
• Analog output and digital outputs for pulses, device status,
limits, flow direction, frequency output
■
Mode of operation
The flow measuring principle is based on Faraday’s law of elec-
tromagnetic induction according to which the sensor converts
the flow into an electrical voltage proportional to the velocity of
the flow.
■
Function
The TRANSMAG 2 is a microprocessor-based transmitter with a
build-in alphanumeric display in several languages. The trans-
mitters evaluate the signals from the associated electromagnetic
sensors and also fulfil the task of a power supply unit which pro-
vides the magnet coils with a constant current.
The magnetic flux density in the sensor is additionally monitored
by reference coils.
Further information on connection, mode of operation and instal-
lation can be found in the data sheets for the sensors.
Displays and keypad
Operation of the transmitter can be carried out using:
• Keypad and display unit
• HART communicator
• PC/laptop and SIMATIC PDM software via HART communica-
tion
• PC/laptop and SIMATIC PDM software using PROFIBUS PA
communication
HART communication
PROFIBUS PA communication
Operating and
display panel
PC/
laptop
Coupling
module
HART
communicator
RS 232
min. 230 Ω
Transmitter with
PROFIBUS PA interface
Coupler with
power supply
Bus
term.
Master
PROFIBUS DP
PROFIBUS PA
.......
T
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FI01_2014_en_Kap03.book Seite 104 Montag, 11. November 2013 4:45 16
© Siemens AG 2013
icenta Controls Ltd
Tel: +44 (0)1722 41
Fax: +44 (0)1722
e: sales@icenta.co.uk www.icenta.co.uk
