Siemens SITRANS F C MC2 User manual

Coriolis flowmeters
SITRANS F C MC2 and MC2 Hygienic
Operating Instructions • 10/2009
SITRANS F

Introduction 1
Safety notes
2
Description
3
Installing / Mounting
4
Connecting
5
Commissioning
6
Maintenance and service
7
Troubleshooting / FAQs
8
Technical data
9
Dimensions
10
Appendix
A
SITRANS F
Flowmeters
SITRANS F C MC2
Operating Instructions
10/2009
A5E02154544-02
MC2 DN 50-150
MC2 Hygienic (EHEDG) DN 20 - DN 80

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the corresponding information is not taken into
account.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation for the specific task, in particular its warning notices and
safety instructions. Qualified personnel are those who, based on their training and experience, are capable of
identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be adhered to. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of the
owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Ordernumber: A5E02154544
Ⓟ 10/2009
Copyright © Siemens AG 2008,
2009.
Technical data subject to change

SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 3
Table of contents
1 Introduction................................................................................................................................................ 5
1.1 Items supplied................................................................................................................................5
1.2 History............................................................................................................................................5
1.3 Further Information ........................................................................................................................6
2 Safety notes............................................................................................................................................... 7
2.1 Laws and directives .......................................................................................................................7
2.2 Installation in hazardous location...................................................................................................8
3 Description............................................................................................................................................... 11
3.1 Coriolis Mass flow meters ............................................................................................................11
3.2 MC2 features................................................................................................................................13
4 Installing / Mounting................................................................................................................................. 15
4.1 Use according to specifications ...................................................................................................15
4.2 Determining a location .................................................................................................................16
4.3 Sensor orientation........................................................................................................................17
4.4 Vibrations and crosstalk...............................................................................................................19
5 Connecting .............................................................................................................................................. 21
6 Commissioning ........................................................................................................................................ 25
6.1 General requirements ..................................................................................................................25
6.2 Zero point adjustment ..................................................................................................................25
7 Maintenance and service......................................................................................................................... 27
7.1 Maintenance.................................................................................................................................27
7.2 Transportation/storage.................................................................................................................27
7.3 Recalibration ................................................................................................................................27
7.4 Technical support.........................................................................................................................28
7.5 Return procedures .......................................................................................................................29
8 Troubleshooting / FAQs........................................................................................................................... 31
8.1 General information .....................................................................................................................31
8.2 Step 1: Inspecting the application................................................................................................31
8.3 Step 2: Performing a zero point adjustment ................................................................................32
8.4 Step 3: Calculating the measurement error.................................................................................32
8.5 Step 4: Improving the application.................................................................................................34
9 Technical data ......................................................................................................................................... 37

Table of contents
SITRANS F C MC2
4 Operating Instructions, 10/2009, A5E02154544-02
9.1 Pressure / temperature range ..................................................................................................... 38
9.2 Pressure drop.............................................................................................................................. 39
9.3 Accuracy...................................................................................................................................... 40
10 Dimensions.............................................................................................................................................. 43
10.1 Dimensions of MC2..................................................................................................................... 43
10.2 Dimensions of MC2 Hygienic...................................................................................................... 46
A Appendix.................................................................................................................................................. 51
A.1 Accessories and spare parts....................................................................................................... 51
Glossary .................................................................................................................................................. 53
Index........................................................................................................................................................ 57

SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 5
Introduction 1
These instructions contain all the information you need for using the device.
The instructions are aimed at persons mechanically installing the device, connecting it
electronically, configuring the parameters and commissioning it as well as service and
maintenance engineers.
Note
It is the responsibility of the customer that the instructions and directions provided in the
manual are read, understood and followed by the relevant personnel before installing the
device.
1.1 Items supplied
● MC2 sensor
● Sensorprom
● Calibration report
● Quick Start
● CD-ROM
1.2 History
This document describes:
● SITRANS F C MC2
● SITRANS F C MC2 Hygienic
Documentation history
The contents of these instructions are regularly reviewed and corrections are included in
subsequent editions. We welcome all suggestions for improvement.
The following table shows the most important changes in the documentation compared to
each previous edition.
Edition Remarks
10/2009 Updated information on electrical connections
05/2008 First edition of operating instructions for SITRANS F C MC2 and SITRANS F C MC2
Hygienic.
01/2006 Manual supplement for SITRANS F C MC1

Introduction
1.3 Further Information
SITRANS F C MC2
6 Operating Instructions, 10/2009, A5E02154544-02
1.3 Further Information
The contents of these Operating Instructions shall not become part of or modify any prior or
existing agreement, commitment or legal relationship. All obligations on the part of Siemens
AG are contained in the respective sales contract which also contains the complete and
solely applicable warranty conditions. Any statements contained herein do not create new
warranties or modify the existing warranty.
Product information on the Internet
The Operating Instructions are available on the CD-ROM shipped with the device, and on
the Internet on the Siemens homepage, where further information on the range of SITRANS
F flowmeters may also be found:
Product information on the internet (http://www.siemens.com/flowdocumentation)
Worldwide contact person
If you need more information or have particular problems not covered sufficiently by the
operating instructions, please get in touch with your contact person. You can find contact
information for your local contact person on the Internet:
Local contact person (http://www.automation.siemens.com/partner)

SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 7
Safety notes 2
CAUTION
Correct, reliable operation of the product requires proper transport, storage, positioning and
assembly as well as careful operation and maintenance. Only qualified personnel should
install or operate this instrument.
Note
Alterations to the product, including opening or improper repairs of the product, are not
permitted.
If this requirement is not observed, the CE mark and the manufacturer's warranty will expire.
2.1 Laws and directives
General requirements
Installation of the equipment must comply with national regulations. For example EN 60079-
14 for the European Community.
Instrument safety standards
The device has been tested at the factory, based on the safety requirements. In order to
maintain this condition over the expected life of the device the requirements described in
these Operating Instructions must be observed.
CAUTION
Material compatibility
Siemens Flow Instruments can provide assistance with the selection of wetted sensor
parts. However, the full responsibility for the selection rests with the customer and Siemens
Flow Instruments can take no responsibility for any failure due to material incompatibility.
CE marked equipment
The CE-mark symbolizes the compliance of the device with the following guidelines:
● EMC-guideline 89/336/EWG
● Low voltage guideline 73/23/EWG

Safety notes
2.2 Installation in hazardous location
SITRANS F C MC2
8 Operating Instructions, 10/2009, A5E02154544-02
● Pressure equipment directive (PED/DGRL) 93/23/EG
● ATEX Directive 94/9/EG
2.2 Installation in hazardous location
WARNING
Equipment used in hazardous areas must be Ex-approved and marked accordingly. It is
required that the special conditions for safe use provided in the manual and in the Ex
certificate are followed!
Ex approvals
DN ≤40 [1½^"] DN ≥50 [2"]
II 2G EEx em [ib] IIC T6 II 1/2 EEx em [ib] IIC T6
85
86
87
88
89
90
95
96
93
94
91
92
Cor iolis
“m“ F
T
“ib“
“e“
PA PA
PA
“e“
“e“
“e“
II 2G EEx em [ib] IIC T6
II 1/2G EEx em [ib] IIC T6
II 2D T115 °C ...Tmed IP67
U
m
= 60 V
SE
“m“
཰ ཱ
① Sensor
② Terminal box
Figure 2-1 Ex layout
Temperature specifications for Ex use
Temperature class Ambient temperature [°C]
-40...+40 -40...+50 -40...+60
T2 180 - -
T3 165 140 -
T4 100 100 80
T5 65 65 65
T6 50 50 50

Safety notes
2.2 Installation in hazardous location
SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 9
Sensor location
Non-hazardous location Hazardous location
EX requirements
It is required that:
● Electrical connections are in accordance with Elex V (VO in explosion hazardous areas)
and EN60079-14 (Installing Electrical Systems in Explosion Hazardous Areas).
● The protective cover over the power supply is properly installed. For intrinsically safe
circuits the connection area can be opened.
● Appropriate cable connectors are used for the output cicuits: intrinsically safe: blue, non-
intrinsically safe: black
● Sensor and transmitter are connected to the potential equalization. For intrinsically safe
output circuits potential equalization must be maintained along the entire connection path.
● Sensor insulation thickness is max. 100mm (only insulated sensors).
● EN50281-1-2 is considered for installation in areas with combustible dust.
● When protective earth (PE) is connected, no potential difference between the protective
earth (PE) and the potential equalization (PA) can exist, even during a fault condition.

Safety notes
2.2 Installation in hazardous location
SITRANS F C MC2
10 Operating Instructions, 10/2009, A5E02154544-02

SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 11
Description 3
Measurement of liquids and gases
SITRANS F C Coriolis mass flow meters are designed for measurement of a variety of
liquids and gases. The meters are multi parameter devices offering accurate measurement
of mass flow, volume flow, density, fraction, Brix/Plato, and temperature.
Main applications
The main applications of the Coriolis flow meter can be found in all industries, such as:
● Chemical & Pharma: Detergents, bulk chemicals, pharmaceuticals, acids, alkalis
● Food & Beverage: Dairy products, beer, wine, softdrinks, plato/brix, fruit juices and pulps,
bottling, CO2 dosing, CIP/SIP-liquids
● Automotive: Fuel injection, nozzle & pump testing, filling of AC units, engine consumption,
paint robots
● Oil & Gas: Filling of gas bottles, furnace control, CNG-dispensers, test separators
● Water & Waste Water: Dosing of chemicals for water treatment
3.1 Coriolis Mass flow meters
The Coriolis principle of measurement
The flow measuring principle is based on Coriolis law of movement.
The SITRANS F C sensors are energized by an electromechanical driver circuit which
oscillates the pipe at its resonant frequency. Two pick-ups, 1 and 2 are placed symmetrically
on both sides of the driver. When the media flows through the sensor, Coriolis force will act
on the measuring tube and cause a tube deflection which can be measured as a phase shift
from pick-up 1 to pick up 2.
The phase shift is proportional to the mass flow rate. The amplitude of the driver is
automatically regulated via a "phase locked loop", to ensure a stable output from the 2
pickups in the region of 80 to 110 mV. The temperature of the sensor is measured by a
Pt1000, in a wheatstone configuration (4-wire).
The flow proportional signal from the 2 pick-ups, the temperature measurement and the
driver frequency are fed into the transmitter (SITRANS F C MASS 6000 or SIFLOW FC070)
for calculations of mass, density, volume, fraction, Brix/Plato, and temperature.
ASIC
The analog to digital conversion takes place in an ultra low noise ASIC with 23 bit signal
resolution. The signal transfer function is based on a patented DFT technology (Discrete

Description
3.1 Coriolis Mass flow meters
SITRANS F C MC2
12 Operating Instructions, 10/2009, A5E02154544-02
Fourier Transformation). The ASIC is constructed as a state machine gate array, which
enables fast signal processing and filtering. The ASIC has a built in noise filter, which can be
changed and is used to improve the performance of the meter if the installation and
application conditions are not ideal. Typically influence from process noise such as pump
pulsations, mechanical vibrations, oscillating valves can be filtered out to a large degree
through the filter functions.
SENSORPROM
All SITRANS F Coriolis flow meters feature a SENSORPROM® memory unit which stores
sensor calibration data and transmitter settings for the lifetime of the product. Factory
settings matching the sensor are thus stored in the SENSORPROM® unit and can always be
retrieved. At commissioning the flow meter commences measurement without any initial
programming. Also customer specified settings are downloaded to the SENSORPROM®
unit.
USM
For communication purposes the ASIC has a CAN interface with a Siemens specific
protocol. This concept is known as the USM II (Universal Signal Module) concept. The idea
is that extra output modules or communication modules can be connected to this bus,
making it possible to configure the flow meter for the precise task in hand. When the internal
CAN bus detects the installed module, it is automatically programmed to factory settings via
the SENSORPROM® memory unit. Currently the USM platform handles the following
communication protocols: PROFIBUS DP, PROFIBUS PA, HART, MODBUS, Devicenet,
and Foundation Fieldbus.

Description
3.2 MC2 features
SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 13
3.2 MC2 features
Versions
The MC2 is available as a standard and as a hygienic version holding the EHEDG certificate
MC2 Standard DN 50-150 MC2 Hygienic (EHEDG) DN 20-25 and DN 40-80

Description
3.2 MC2 features
SITRANS F C MC2
14 Operating Instructions, 10/2009, A5E02154544-02
Description
MC2 DN 50 to DN 150 (2" to 6") and MC2 Hygienic (EHEDG certified) from DN 20 to DN 80
(¾" to 3") are suitable for accurate mass flow measurement of a variety of liquids and gases.
The sensors offer superior performance in terms of mass flow accuracy, density accuracy,
and turn-down ratio. The very compact sensor construction makes installation and
commissioning of even the largest sizes very straight forward and easy.
The sensor delivers true multi parameter measurements i.e.: Mass flow, volume flow,
density, fraction flow, Brix/Plato, and temperature.
A Cable gland
B Pressure guard
C Ground terminal
D Terminal box
Design
The MC2 sensor consists of 2 parallel measuring pipes, welded directly onto a flow splitter at
each end to eliminate a direct coupling to the process connectors and significantly reduce
effects from external vibrations.
The flow-splitters are welded directly onto a rigid sensor housing which acts as a mechanical
low pass filter.
Figure 3-1 MC2 cut open
The wetted parts of the MC2 standard are available in two material configurations, W 1.4571
/ AISI 316Ti or Hastelloy C4 with a wide variety of process connections, while MC2 Hygienic
is available in W 1.4435. The enclosure is made of stainless steel W 1.4301 / AISI 304 with a
grade of encapsulation of IP67/NEMA 4.

SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 15
Installing / Mounting 4
SITRANS F flowmeters are suitable for in- and outdoor installations.
● Make sure that pressure and temperature specifications indicated on the device type
plate / label will not be exceeded.
WARNING
Installation in hazardous location
Special requirements apply to the location and interconnection of sensor and
transmitter. See "Installation in hazardous area" (Page 8)
4.1 Use according to specifications
Instrument safety standards
The device meets the safety criteria defined in the Pressure Equipment Directive (PED). It
has been tested at the factory, based on the safety requirements. In order to maintain this
condition over the expected life of the device the requirements described in these Operating
Instructions must be observed.
The device satisfies the EMC-Requirements per EN61326 / NAMUR NE21 and the Low
Voltage Directive EN61010-1.
Use according to specifications covers:
● Use within technical limits.
● Consideration of liquid specifications and references.
● Consideration of specifications as to installation, commissioning and maintenance.
● Allowed pressure and temperature must be ≤ the pressure and temperature
specifications stated on the product label.
● Flow and density must be within the specified limits
Do NOT:
● Use the meter as elastic equalization in pipe systems to compensate for e.g. pipe
displacement, pipe vibration, expansion etc.
● Use the meter as footboard for installation purposes.

Installing / Mounting
4.2 Determining a location
SITRANS F C MC2
16 Operating Instructions, 10/2009, A5E02154544-02
● Use the meter as support of external loads like pipes etc.
● Change the meter in any way like e.g. decomposition of material in connection with
processing, welding and use of accessories and spare parts not approved by Siemens
Flow Instruments.
Note
If the meter is not used according to the specifications, the manufacturer cannot be held
responsible for any damage occurred.
See also
Technical data (Page 37)
4.2 Determining a location
Note
Do not install the sensor in the vicinity of strong electromagnetic fields, e.g. near motors,
pumps, transformers etc. This will destroy the measurement principle.
Upstream / downstream
● The mass flow meter does not require any straight inlet sections
● Avoid long drop lines downstream from the flow meter to prevent the meter tube from
draining (min. pressure: 0.2 Bar).
● Avoid installing the sensor immediately upstream of a free discharge in a drop line.
Location in the system
The optimum location in the system depends on the application
● For liquid applications the presence of gas or air bubbles in the fluid may result in
erroneous measurements, particularly in the density measurement. Therefore do not
install the flow meter at the highest point in the system, where gas / air bubbles will be
trapped. For liquids it is advantageous to install the flow meter in low pipeline sections, at
the bottom of a U-section in the pipeline.
● For gas applications the presence of oil may result in erroneous measurements.
Therefore do not install the flow meter at the lowest point of the system, or install a filter.

Installing / Mounting
4.3 Sensor orientation
SITRANS F C MC2
Operating Instructions, 10/2009, A5E02154544-02 17
4.3 Sensor orientation
Flow direction
The calibrated flow direction is indicated by the arrow on the sensor. Flow in this direction
will be indicated as positive (a forward/reverse flow calibration is available as an option).
CAUTION
The sensor must always be completely filled with fluid in order to measure accurately.
Installation orientation
The Sitrans F C MC2 operates in all orientations, but the optimal sensor orientation is a
vertical installation with an upward flow. This has the advantage that air and gas bubbles will
move upward out of the meter tube. Additionally, it is easy to drain the meter tube. Deposits
can thereby be avoided.
Table 4- 1 Sensor orientation
Orientation GAS LIQUIDS
Vertical
Horizontal
Selfdraining: 2-4°

Installing / Mounting
4.3 Sensor orientation
SITRANS F C MC2
18 Operating Instructions, 10/2009, A5E02154544-02
Installation in a drop line
Table 4- 2 Installation in dropline
Min. pressure: 0.2 Bar
Installation in a dropline is only possible if a pipeline reduction (A) or orifice (B) with a smaller
cross-section can be installed to prevent the sensor from being partially drained during the
measurements.