Siemens SITRANS F User manual

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฀SITRANS FVA250฀
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1
Introduction
2
Safety notes
3
Description
SITRANS F
4
Installing/Mounting
Variable area flowmeter
5
SITRANS FVA250
Connecting
6
Commissioning
Operating Instructions
7
Service and maintenance
8
Technical data
9
Dimensions and weight

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: A5E03821131
Ⓟ 02/2013 Technical data subject to change
Copyright © Siemens AG 2013.
All rights reserved
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
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
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, 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 complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of 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.

Table of contents
1 Introduction................................................................................................................................................ 5
1.1 Items supplied................................................................................................................................5
1.2 Scope of delivery ...........................................................................................................................5
1.3 Transportation and storage............................................................................................................6
1.4 History............................................................................................................................................7
1.5 Further Information ........................................................................................................................7
2 Safety notes............................................................................................................................................... 9
2.1 Hot surfaces resulting from hot process media .............................................................................9
2.2 Laws and directives .......................................................................................................................9
2.3 Installation in hazardous area......................................................................................................11
2.4 Certificates ...................................................................................................................................14
3 Description............................................................................................................................................... 15
3.1 System components ....................................................................................................................15
3.2 Design..........................................................................................................................................16
3.3 Theory of operation......................................................................................................................17
4 Installing/Mounting................................................................................................................................... 19
4.1 Installation safety precautions......................................................................................................19
4.2 Device check................................................................................................................................20
4.3 Determining a location .................................................................................................................20
4.4 Mounting the sensor ....................................................................................................................21
4.5 Damping.......................................................................................................................................22
4.6 Retrofitting MEM transducers ......................................................................................................24
5 Connecting .............................................................................................................................................. 25
5.1 Wiring MEM / MEM-PPA..............................................................................................................25
5.2 Electrical connection schematics.................................................................................................26
5.2.1 Limit switches...............................................................................................................................26
5.2.2 Magneto-electrical measuring transducer HART.........................................................................27
5.2.3 Measuring transducer HART with 4-20 mA output, pulse output and one limit switch................28
5.2.4 Measuring transducer HART with 4-20 mA output and two limit switches ..................................29
5.2.5 Magneto-electrical measuring transducer MEM-PPA..................................................................30
6 Commissioning ........................................................................................................................................ 33
6.1 Analogue output (MEM)...............................................................................................................33
6.2 Limit signal settings......................................................................................................................34
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 3

Table of contents
SITRANS FVA250
4 Operating Instructions, 02/2013, A5E03821131-01
6.3 Output settings ............................................................................................................................ 35
6.3.1 Measuring transducer HART with 4-20 mA output / pulse output / limit switches ...................... 35
6.3.2 Measuring transducer PROFIBUS.............................................................................................. 35
6.4 Configuring with HART................................................................................................................ 35
6.4.1 Commissioning with PDM ........................................................................................................... 35
6.4.2 Basic parameter settings............................................................................................................. 36
6.4.3 HART parameters ....................................................................................................................... 37
6.5 Configuring with PROFIBUS PA ................................................................................................. 40
6.5.1 Magneto-electrical measuring transducer MEM-PPA................................................................. 40
6.5.2 Acyclic communication................................................................................................................ 42
7 Service and maintenance ........................................................................................................................ 47
7.1 Maintenance................................................................................................................................ 47
7.2 Unit cleaning ............................................................................................................................... 47
7.3 Recalibration ............................................................................................................................... 48
7.4 Unit repair.................................................................................................................................... 48
7.5 Technical support........................................................................................................................ 49
7.6 Return procedures ...................................................................................................................... 49
8 Technical data ......................................................................................................................................... 51
8.1 Classification according to pressure equipment directive (PED 97/23/EC)................................ 52
8.2 Pressure vs. temperature (stainless steel).................................................................................. 53
8.3 Limit switches.............................................................................................................................. 53
8.4 MEM Transducer HART with 4-20 mA........................................................................................ 54
8.5 MEM transducer HART with additional pulse output and limit switches..................................... 54
8.6 MEM transducer PROFIBUS PA ................................................................................................ 55
9 Dimensions and weight............................................................................................................................ 57
Index........................................................................................................................................................ 61

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
electrically, 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
operating instructions are read, understood, and followed by the relevant personnel before
installing the device.
1.1 Items supplied
SITRANS FVA250 variable area flowmeter
Operating Instructions
Calibration certificate (optional)
Test report 2.2 (optional)
Acceptance test (optional)
Stainless steel TAG plate (optional)
1.2 Scope of delivery
Inspection
1. Check for mechanical damage due to possible improper handling during shipment. All
claims for damage are to be made promptly to the carrier.
2. Make sure the scope of delivery and the information on the nameplate correspond to the
ordering information.
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 5

Introduction
1.3 Transportation and storage
SITRANS FVA250
6 Operating Instructions, 02/2013, A5E03821131-01
Identification
0(&.($&RQQHFWLRQ'1',1310DWHULDO6WDLQOHVV6WHHO36EDUSVL760HGLDr&r)3URWHFWLRQ(1,3P$9'&7PD[ r&
① MEM specification Electrical specifications of the output / transducer (MEM)
② Protection Protection class for the display housing
③ TS Medium Maximum temperature of the medium
④ PS Maximum pressure of the medium
⑤ Material Material of the wetted parts
⑥ Connection Connection type of the device
⑦ Serial number Device specific serial number and the manufacturing year
⑧ Code number Device specific code number
⑨ PED specification Category acc. to Pressure Equipment Directive (PED)
Figure 1-1 FVA250 nameplate example
1.3 Transportation and storage
To guarantee sufficient protection during transport and storage, observe the following:
● Keep the original packaging for subsequent transportation.
● Devices/replacement parts should be returned in their original packaging.
● If the original packaging is no longer available, ensure that all shipments are properly
packaged to provide sufficient protection during transport. Siemens cannot assume
liability for any costs associated with transportation damages.
●

Introduction
1.4 History
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 7
CAUTION
Insufficient protection during storage
The packaging only provides limited protection against moisture and infiltration.
Provide additional packaging as necessary.
● Store the device in a dry and dust-free place.
● Keep away from direct sun and heat.
● Avoid external load to the device.
● The storage temperature range for standard devices with electrical components is -40 …
+70 °C / -40 … +158 °F.
1.4 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
02/2013 First edition
Contents restructured
1.5 Further Information
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/flow)
Worldwide contact person
If you need more information or have particular problems not covered sufficiently by these
Operating Instructions, 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)

Introduction
1.5 Further Information
SITRANS FVA250
8 Operating Instructions, 02/2013, A5E03821131-01

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 modifications of the product, are not
permitted.
If this requirement is not observed, the CE mark and the manufacturer's warranty will expire.
2.1 Hot surfaces resulting from hot process media
CAUTION
Hot surfaces resulting from hot process media
Danger of burns resulting from surface temperatures above 70 °C (155 °F).
Take appropriate protective measures, for example contact protection.
Make sure that protective measures do not cause the maximum permissible ambient
temperature to be exceeded, see Technical data (Page 51), "Temperatures".
2.2 Laws and directives
General requirements
Installation of the equipment must comply with national regulations. For example EN 60079-
14 for the European Community.
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 9

Safety notes
2.2 Laws and directives
SITRANS FVA250
10 Operating Instructions, 02/2013, A5E03821131-01
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.
NOTICE
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.
The manufacturer is not liable for any damage resulting from improper or intended use of
these devices.
CE-marked equipment
The CE mark symbolizes the compliance of the device with the following directives:
● EMC-directive 2004/108/EC and 89/336/EWG
● Low voltage directive 2006/95/EC
● Pressure equipment directive (PED/DGRL) 97/23/EC
● ATEX directive 94/9/EG
Compliance to EN 13463-1 / EN 50014
In its basic design, this flow metering device is a non-electrical device without its own ignition
sources. The device complies with the requirements of EN 13463-1.
The equipment is evaluated as an electrical assembly when electrical signal transducers are
installed. In this case the entire equipment including the installed electrical signal
transducers complies with EN 50014.
The electrical and thermal data and the special directives of the EC Type Examination
Certificate with regard to the installed signal transducers must be observed and adhered to.
See also
Classification according to pressure equipment directive (PED 97/23/EC) (Page 52)

Safety notes
2.3 Installation in hazardous area
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 11
2.3 Installation in hazardous area
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!
Hazardous area approvals
The device is approved for use in hazardous area zone 1 and has the following approval:
● II 2 GD c
Designation in case of installed limiting value transmitter SJ 3.5-N:
● II 2G EEx ia IIC T6-T4
Designation in case of installed magneto electrical measuring transducers HART and
PROFIBUS:
● II 2G EEx ia IIC T6
WARNING
Make sure the hazardous area approval is suitable for the environment in which the
device will be installed.
Intrinsically safe data
In accordance with the tables contained in the EC Type Examination Certificate PTB 99
ATEX 2219 X, the inductive sensor SJ 3.5-N must be operated within the temperature class
T5 with an intrinsically safe circuit that does not exceed the maximum values of a Type 3
circuit.
Table 2- 1 Intrinsically safe circuits
Intrinsically safe
circuits
Type 1 Type 2 Type 3 Type 4
Ui 16 V 16 V 16 V 16 V
Ci 50 nF 50 nF 50 nF 50 nF
Li 250 μH 250 μH 250 μH 250 μH
Ii 25 mA 25 mA 52 mA 76 mA
Pi [mW] 34 mW 64 mW 169 mW 242 mW

Safety notes
2.3 Installation in hazardous area
SITRANS FVA250
12 Operating Instructions, 02/2013, A5E03821131-01
WARNING
With intrinsically safe circuits, use only certified sensors appropriate for the transmitter.
If a non-conforming supply unit is used, the "fail-safe" type of protection will no longer be
effective and the approval certification will be invalid.
Temperature specifications for Ex use
Table 2- 2 Maximum ambient temperature (Ta)
Temperature class Type 1 Type 2 Type 3 Type 4
T6 73 °C 66 °C 45 °C 30 °C
T5 88 °C 81 °C 60 °C 45 °C
T4 100 °C 100 °C 89 °C 74 °C
Note
Temperature specification
For further temperature specification, see Technical data (Page 51), "Temperatures".
Ambient temperature factors
The impact of the process media temperature on the installed signal transducers must be
taken into account.
For this purpose the temperature rise of the maximum process media temperature in relation
to the maximum ambient temperature and the appropriate factor defined in the following
table must be taken into consideration.
Table 2- 3 Ambient temperature factors
Nominal width Factor (standard model) Factor (advanced display)
DN15 and DN25 0.2 0.07
DN40 and DN50 0.25 0.085
DN80 and DN100 0.3 0.1
Example 1
Example of calculation of the ambient temperature at limiting value transmitter (limit switch
SJ 3.5-N) for sizes DN 15 and DN 25.
● Max. ambient temperature: Tamb = 40 °C
● Max. process media temperature: Tm = 120 °C

Safety notes
2.3 Installation in hazardous area
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 13
● Factor for heat input: F = 0.2
● Temperature class: T4
● Te = excess temperature
● Ta = ambient temperature at limiting value transmitter (limit switch SJ 3.5-N)
Te = Tm −Tamb = 120°C −40°C = 80°C
Ta = (Te* F) + Tamb = (80°C* 0,2) + 40°C = 56°C
Figure 2-1 Calculation of ambient temperature at limiting value transmitter (limit switch SJ 3.5-N)
Example 2
Example of the calculation of the max. process media temperature in relation to the max.
ambient temperature for the installed sensor type at widths for sizes DN 15 and DN 25
● Ta = 70 °C
● Tamb = 60 °C
● F = 0.2
Tm = (
Ta – Tamb
) + Tamb = (
70°C – 60°C
) + 60°C = 110°C
0.2F
Figure 2-2 Calculation of max. process media temperature
Special conditions for safe use
The maximum surface temperature of the measuring substance is decisive as the equipment
does not exhibit its own energy sources that could lead to a rise in temperature.
Regular cleaning is essential when the equipment is employed in dust-explosive zones in
order to prevent sedimentation exceeding the thickness of 5 mm.
It is required that:
● Electrical connections are in accordance with EN 60079-14 (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 circuits:
– 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. 100 mm (only insulated sensors).

Safety notes
2.4 Certificates
SITRANS FVA250
14 Operating Instructions, 02/2013, A5E03821131-01
● EN 50281-1-2 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.
WARNING
"Flameproof enclosure" type of protection
Only open devices with protectiontype "Flameproof enclosure" in hazardous areas when
the power to the device is turned off, otherwise there is a risk of explosion.
WARNING
Laying of cables
Cable for use in zone 1 and 2 or 21 and 22 must satisfy the requirements for having a
proof voltage < 500 V AC applied between the conductor/ground, conductor/shield and
shield/ground.
Connect the devices that are operated in hazardous areas as per the stipulations
applicable in the country of operation, e.g. for Ex "d" and "nA", permanent cables must
be laid.
2.4 Certificates
Certificates are posted on the Internet and on the documentation CD-ROM shipped with the
device.
See also
Certificates on the Internet (http://www.siemens.com/processinstrumentation/certificates)

3
Description
The SITRANS FVA250 is suitable for multipurpose measuring of fluids and gases in closed
piping systems.
The robust design also permits application under harsh conditions.
Different flange connections, liners and rotameter materials meet the requirements in the
pharmaceutical and chemical industry.
3.1 System components
● SITRANS FVA250 fitting
● Float (optional with damping piston)
● Gas damping (optional)
● Indicator unit (incl. bearing unit, scale, scale pointer)
● MEM transducer with HART / PROFIBUS protocol (optional)
● Limiting value transmitter(s) (optional)
Figure 3-1 Variable area flowmeter
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 15

Description
3.2 Design
SITRANS FVA250
16 Operating Instructions, 02/2013, A5E03821131-01
Magneto-electrical measurement transducers (MEM)
SITRANS FVA250 is optionally available with magneto-electrical measurement transducers
for configuration with HART (MEM) or with PROFIBUS PA (MEM-PPA).
Figure 3-2 Magneto-electrical measurement transducer (MEM)
3.2 Design
SITRANS FVA250 is an all-metal variable area flowmeter with a standard length of 250 mm
(9.84 inch). The momentary flowrate is indicated in volume or mass per time unit. The
measured value is indicated directly on the scale.
The equipment can be supplied with accessory electrical components and touch-sensitive
switches for process monitoring and control.
Features
● Standard model can be supplied at short notice
● Robust all-metal fitting with shock-proof housing
● Applicable for the measurement of aggressive and combustible materials
● Applicable for high pressures and temperatures
● Product and percentage scale
● Optionally supplied with heating and cooling jackets fitted
● Contamination-resistant design
MEM transducers
The measuring transducers MEM / MEM-PPA are installed in the flowmeter FVA250. In this
manner the range of volume flow measurement is covered.
The measuring transducers MEM / MEM-PPA are designed for installation in a housing that
is at least compliant with enclosure rating IP20.

Description
3.3 Theory of operation
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 17
3.3 Theory of operation
The FVA250 operates according to the principle of flotation. The flowing measuring
substance raises the conical float in the measuring ring. In this way the annular gap widens
until an equilibrium between the buoyancy of the measuring substance and the weight of the
float is achieved. The height achieved by the float is directly proportional to the flowrate. The
movement of the float is transmitted via a magnet to a subsequent magnet in the display part
outside the measuring pipe.
9
0
°
-
1
3
0
°
Figure 3-3 Measuring cone / scale angle
MEM transducers
The setting of the float is transmitted to the pointer axis by means of a magnetic system on
the pointer axis. The measuring transducers MEM / MEM-PPA measures the field of a
magnet mounted to the pointer axis. The scale, which is generally non-linear, is linearized
with a maximum of 16 interpolation points in the process.
● The MEM transducer (HART) generates a resulting output current 4...20 mA.
The earth magnetic field and homogeneous external magnetic fields, if not too high, are
more or less compensated by the differential measurement.
● The MEM transducer (HART) provides limit switches and a pulse output. The pulses are
displayed at binary output N1. It must be observed that the maximum pulse output rate
amounts to approximately 10 Hz. The pulse width is approximately 50 ms.
● The MEM-PPA transducer (PROFIBUS PA) generates a digitalized measured value.

Description
3.3 Theory of operation
SITRANS FVA250
18 Operating Instructions, 02/2013, A5E03821131-01

4
Installing/Mounting
SITRANS F flowmeters with minimum IP65/NEMA 4X enclosure rating are suitable for indoor
and outdoor installations.
● Make sure that pressure and temperature specifications indicated on the device
nameplate / 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 11)
CAUTION
Aggressive atmospheres
Damage to device through penetration of aggressive vapors.
Ensure that the device is suitable for the application.
4.1 Installation safety precautions
WARNING
High pressure hazard
In applications with working pressures/media that can be dangerous to people,
surroundings, equipment or others in case of pipe fracture, we recommend that special
precautions such as special placement, shielding or installation of a pressure guard or a
safety valve are taken when the sensor is mounted.
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01 19

Installing/Mounting
4.2 Device check
SITRANS FVA250
20 Operating Instructions, 02/2013, A5E03821131-01
4.2 Device check
Prior to installation check the functionality of the device:
● Remove the transport protection from the fitting.
● Verify the free mobility of the float.
– The float must slide smoothly in the pipe without canting or deadlocking.
– The pointer must smoothly follow the movement of the float.
– In the idle state (no flow) the pointer must be at the marked reference point (first line
on the scale).
– At the end position of the float the pointer must be above the final value of the scale.
4.3 Determining a location
Ensure that there is sufficient clearance to magnet-influencing parts, such as for example
solenoid valves and ferromagnetic components, e.g. steel brackets/structures.
Clearance between adjacently mounted devices
Observe at least 300 mm (11.8") as the lateral clearance between 2 adjacently mounted
instruments.
The instruments can be mounted staggered by the length of one instrument at reduced
clearance.
Clearance to influencing steel parts
The lateral clearance to influencing steel parts must constitute at least 200 mm. In case of
doubt the influence can be tested by moving the instrument up and down approximately
200 mm (7.87") at a selected clearance and verifying whether the position of the pointer in
the display changes.
Inlet / outlet conditions
● Inlet and outlet pluggings in front of and behind the instrument are usually unnecessary in
the case of linear flow profile of the medium.
● Avoid installation of unilaterally constricting fittings in front of the instrument.
● As a rule, interference-free inlet and outlet tracks are not required. In the case of highly
asymmetric flow profiles, however, additional measures (e.g. inlet tracks, flow rectifiers)
could be expedient for the attainment of measuring accuracy.
If this is absolutely necessary, at least the length of the instrument = 250 mm (9.84")
should be designed as the inlet track.
● The nominal width of the pipe to be connected must correspond to the nominal width of
the measuring instrument.
● For gases, valves must be installed in the outlet of the measuring device.