sitrans wf100

sitrans wf100
Solid Flowmeters
SITRANS WF100
Operating Instructions 02/2012
SITRANS
Safety Guidelines
Warning notices must be observed to ensure personal safety as well as that of others, and to protect the product and the connected
equipment. These warning notices are accompanied by a clarification of the level of caution to be observed.
Qualified Personnel
This device/system may only be set up and operated in conjunction with this manual. Qualified personnel are only authorized to install
and operate this equipment in accordance with established safety practices and standards.
Unit Repair and Excluded Liability:




The user is responsible for all changes and repairs made to the device by the user or the user’s agent.
All new components are to be provided by Siemens Milltronics Process Instruments.
Restrict repair to faulty components only.
Do not reuse faulty components.
Warning: Cardboard shipping package provides limited humidity and moisture protection. This product can only function properly
and safely if it is correctly transported, stored, installed, set up, operated, and maintained.
This product is intended for use in industrial areas. Operation of this equipment in a residential area may cause interference to
several frequency based communications.
Note: Always use product in accordance with specifications.
Copyright Siemens AG 2011. All Rights Reserved
Disclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to purchase
authorized bound manuals, or to view electronic versions as
designed and authored by Siemens Milltronics Process
Instruments. Siemens Milltronics Process Instruments will
not be responsible for the contents of partial or whole
reproductions of either bound or electronic versions.
While we have verified the contents of this
manual for agreement with the instrumentation
described, variations remain possible. Thus we
cannot guarantee full agreement. The contents of
this manual are regularly reviewed and
corrections are included in subsequent editions.
We welcome all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments.
Contact SMPI Technical Publications
at the following address:
European Authorized Representative
Technical Publications
Siemens AG
Siemens Milltronics Process Instruments
1954 Technology Drive, P.O. Box 4225
Peterborough, Ontario, Canada, K9J 7B1
Email: techpubs.smpi@siemens.com
Siemens AG
Industry Sector
76181 Karlsruhe
Deutschland


For a selection of Siemens Milltronics level measurement manuals, go to:
www. siemens.com/processautomation. Under Process Instrumentation, select Level Measurement and then go to the manual
archive listed under the product family.
For a selection of Siemens Milltronics weighing manuals, go to:
www. siemens.com/processautomation. Under Weighing Technology, select Continuous Weighing Systems and then go to the
manual archive listed under the product family.
© Siemens AG 2011
SITRANS WF100
1
___________________
Introduction
2
___________________
Safety notes
SITRANS
Flowmeters
SITRANS WF100
3
___________________
Description
4
___________________
Installing/Mounting
5
___________________
Connecting
6
___________________
Commissioning
Operating Instructions
7
___________________
Service and maintenance
8
___________________
Technical data
9
___________________
Dimension drawings
7MH7186
02/2012
7ML19985NB01-01
Legal information
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 relevant 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, 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.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: 7ML19985NB01
Ⓟ 01/2012 Technical data subject to change
Copyright © Siemens AG 2012.
All rights reserved
Table of contents
1
Introduction...................................................................................................................................5
2
Safety notes .................................................................................................................................7
3
2.1
General safety instructions ....................................................................................................... 7
2.2
Installation in hazardous areas ................................................................................................. 7
Description ...................................................................................................................................9
3.1
Material feed examples .......................................................................................................... 14
4
Installing/Mounting....................................................................................................................... 21
5
Connecting ................................................................................................................................. 25
6
Commissioning ........................................................................................................................... 27
7
Service and maintenance ............................................................................................................. 31
8
Technical data ............................................................................................................................ 37
9
Dimension drawings .................................................................................................................... 41
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
3
Table of contents
SITRANS WF100
4
Operating Instructions, 02/2012, 7ML19985NB01-01
Introduction
1
Note
The Siemens flowmeter system is to be used only in the manner outlined in these operating
instructions, otherwise protection provided by equipment may be impaired.
• It is your responsibility to read these operating instructions before installing and starting
up any component of the system to which the flowmeter is being applied.
NOTICE
For industrial use only
This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based communications.
These operating instructions cover only solids flowmeter installation, operation, and
maintenance procedures. Integrator operating instructions are available for download from our
website:
Siemens weighing (http://www.siemens.com/weighing)
Follow these operating instructions for quick, trouble-free installation, and maximum accuracy
and reliability of your flow system.
We always welcome suggestions and comments about manual content, design, and
accessibility. Please direct your comments to:
Technical publications (mailto:techpubs.smpi@siemens.com)
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
5
Introduction
SITRANS WF100
6
Operating Instructions, 02/2012, 7ML19985NB01-01
2
Safety notes
2.1
General safety instructions
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.
2.2
Installation in hazardous areas
s
SITRANS WF100 SOLIDS FLOWMETER
7MHxxxx-xxxxx-xxxx-x
Serial #: GYZ / A1034567
Input: 15 V
Maximum
Enclosure: IP65 (Load Cell)
Cable Entry: 1 x 1/2” NPT
Ambient Temp.: -40ºC to 65ºC
R
CLASS II, DIV. 1, GROUPS E, F, G
CLASS III
159134
IECEx SIR 11.0167X
Ex tb IIIC T80ºC Db IP65
II 2 D
Ex tb IIIC T80∫C Db IP65
SIRA 11ATEX9367X
KCC-REM-S49-MLC
0518
Do Not Disassemble When An Explosive
Dust Atmosphere Is Present
Siemens Milltronics Process Instruments, Peterborough
Assembled in Canada with domestic and imported parts
Note
Nameplate
The nameplate shown is a typical example. Please check the nameplate on your device for
your specific device configuration.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
7
Safety notes
2.2 Installation in hazardous areas
Instructions specific to hazardous area installations
(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)
The following instructions apply to equipment covered by certificate number
SIRA11ATEX9367X:
1. For use and assembly, refer to the main instructions.
2. The equipment is certified for use as Category 2D equipment and may be used in hazardous
zones 21 and 22 with dusts.
3. This equipment has a maximum surface temperature of T80 °C (in a 65 °C ambient). Refer to
the applicable code of practice for selection of this equipment with respect to specific dust
ignition temperatures.
4. The equipment is certified for use in an ambient temperature range of -40 °C to 65 °C.
5. If the conductors of the attached cable are terminated in the hazardous area, appropriate
explosion protection ('Ex') methods should be used that meet the requirements of European
Directive 94/9/EC for Group II, Category 2D.
6. The equipment has not been assessed as a safety related device (as referred to by Directive
94/9/EC Annex II, clause 1.5).
7. Installation and inspection of this equipment shall be carried out by suitably trained personnel
in accordance with the applicable code of practice.
8. Repair of this equipment shall be carried out by suitably trained personnel in accordance with
the applicable code of practice.
9. Components to be incorporated into or used as replacements in the equipment shall be fitted
by suitably trained personnel in accordance with the manufacturer’s documentation.
10. If the equipment is likely to come into contact with aggressive substances, then it is the
responsibility of the user to take suitable precautions that prevent it from being adversely
affected, thus ensuring that the type of protection is not compromised. Aggressive
substances: e.g. acidic liquids or gases that may attack metals or solvents that may affect
polymeric materials. Suitable precautions: e.g. regular checks as part of routine inspections
or establishing from the material’s data sheet that it is resistant to specific chemicals
Note
The flowmeter construction materials include: mild steel (polyester power coat painted) or
stainless steel, nonurethane encapsulant, and silicone rubber seals.
11. Product marking shall include the warning: Do not disassemble when an explosive dust
atmosphere is present.
SITRANS WF100
8
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
3
SITRANS WF100 flowmeter is a low- to medium-capacity flowmeter for various product sizes,
densities, and fluidities in restricted spaces. This compact unit improves processing, increases
operating efficiency, and helps provide significant cost savings.
Operating with a microprocessor-based Siemens integrator, the Milltronics SF500 displays
flowrate, totalized flow, and alarms. Outputs are 0/4 to 20 mA proportional to rate and open
collector output for remote totalization.
Dry bulk solids enter the flowguide producing a mechanical deflection as they strike the
flowmeter sensing plate before continuing through the process unhindered. A strain gauge load
cell converts the horizontal force of the deflection into an electrical signal. The integrator
processes this to display the flowrate and integrated total weight. The process is immune to the
effect of product build-up as only horizontal force is measured.
WF100 features easy installation into standard pipe sizes, simple operation, and fast and
accurate flow response. WF100 is an accurate and repeatable force sensor and its performance
depends on consistent flow of material flow in and the quality of the installation.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
9
Description
Components
Siemens flowmeters react to the horizontal component of force created by the impact of material
on the sensing plate. Siemens flowmeters consist of two physical components:
● the housing which includes the flowguide and the outlet: supports the sensing assembly and
guides the material flow
● the sensing assembly which includes the sensing plate and the load cell(s)
①
②
③
④
⑤
Load cell
Flowguide
Material
Outlet
Sensing plate
NOTICE
On hazardous approved versions the load cell is supplied with an integral cover which
must remain installed during operation
SITRANS WF100
10
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
Horizontal sensing plate
The material travels down the flowguide, striking the sensing plate and discharging through the
outlet. The force exerted on the sensing plate has both a vertical and horizontal component. The
design of the load cell is such that it reacts to the horizontal component only; the vertical
component is ignored.
The sensing plate is displaced proportionally to the material flow and is not susceptible to
material build-up, so long as it does not bridge across to the housing. Positive displacement of
the load cell is limited by the positive stop incorporated in the design of the load cell.
The displacement of the load cell is sensed by its strain gauges. These convert the excitation
signal from the electronic integrator to produce a signal proportional to material flow.
①
②
Positive stop
Negative stop
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
11
Description
Negative displacement
A negative stop protects the load cell against excessive negative displacement which could
functionally destroy it. The negative stop is factory set so that the output signal is limited to -20
mV when the load cell is forced to travel in the negative direction.
Under no-flow conditions, the load cell/sensing plate assembly is at rest at static zero. Under this
condition, the negative stop should not contact the sensing plate, and the output signal from the
load cell will be approximately -5 to 0 mV DC.
1
①
Negative displacement
1
①
Normal gap
Applications
Note
For best performance and limited maintenance requirements, keep in mind material
compatability and flow patterns.
SITRANS WF100
12
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
Ideal material characteristics
● low cohesion (flows well through chutes, similar to a liquid)
● low adhesion (does not stick to surfaces)
● low abrasion (will not wear out chutes, flowguide, or sensing plate)
● low causticity (will not damage internal flowmeter components)
Location
Materials with low moisture content generally have excellent flow and adhesion characteristics.
In processes where material moisture content varies, select a flowmeter location where the
moisture content is lowest.
Linings
● Sensing plate abrasion resistant linings are often used for aggregates, barley, corn,
soybeans, wheat, and material with similar hardness and particle mass. Abrasive materials
are best monitored at low velocity.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
13
Description
3.1 Material feed examples
3.1
Material feed examples
Screw conveyor
① short pitch
② double flight
• most common type of material feeder
• short pitch and/or double flight screws preferred to reduce the
batch size (and increase the frequency) of the material
discharge pulse, or cut back the flights of a standard screw so
it ends before the discharge opening
• use reverse flowguide transition for variable operating speeds
or constant speeds above 40 rpm
Rotary feeder
• provides an air seal between the upstream and/or downstream
process, and the flowmeter
• required if the material is pneumatically conveyed or
flowmeter/process isolation is required
• use reverse flowguide transition for variable operating speeds
or constant speeds above 10 rpm
Bucket elevators
• commonly used for grain applications
• feeder discharge damping required when slow elevators
(typically chain drive) produce heavily pulsing material
discharge
• use deadbox if required to reduce material velocity from fast
elevators (typically re-inforced belt drive)
SITRANS WF100
14
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
3.1 Material feed examples
Conveyor belt
① material discharge
• produces a non-pulsing material discharge
• reverse flowguide transition (and/or material discharge baffle)
often required for variable belt speeds or constant speeds in
excess of 1 m/s (200 feet/minute)
baffle
Drag conveyor
• operates at a constant (and relatively low) velocity
• reverse flowguide transition not normally required but use
feeder discharge damping or a discharge baffle to minimize
the pulsing material discharge
Vibratory feeder
• produces a non-pulsing material discharge
• use reverse flowguide transition for variable speed varieties
① motor
② vibrating pan
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
15
Description
3.1 Material feed examples
Flowmeter in-feed chutes
The flowmeter in-feed chute delivers the material from the bin or feeder discharge to the
flowmeter flowguide. The ideal in-feed chute pre-conditions the material flow to minimize the
effect of abrasion, velocity variation, feeder discharge trajectory variation, and pulsing.
Feeder/flowguide transition
• reverse flowguide transition reverses direction of the bin or
feeder material discharge before the material enters the
flowmeter flowguide
• reversing direction forces the material into a desirable flow
pattern rather than permitting material to be flung from the
feeder, directly into the flowguide
• transition is especially important for high or variable speed
feeders
• forward flowguide transition maintains the material in the same
direction between the bin or feeder discharge and the
flowmeter flowguide
• transition is acceptable for a low and constant velocity feeder
• if a forward flowguide transition must be used for a high or
variable speed feeder application, install a baffle plate
① baffle plate
Short fall chute
• material in-feed chute where the bin or feeder discharge to
flowmeter flowguide fall is less than 0.6 m (2 ft)
• material velocity due to gravity minimized
• chute centreline and angle should coincide with that of the
flowguide, for a distance greater than or equal to the flowguide
diameter (before the flowguide inlet)
① < 0.6 m (2 ft)
SITRANS WF100
16
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
3.1 Material feed examples
Long fall chute
• material in-feed where the bin or feeder discharge/flowguide
fall is more than 0.6 m (2 ft)
• less desirable than the short fall chute because material
velocity is greater, increasing flowmeter component abrasion
• greater distances after chute angle changes required to settle
material into desirable flow patterns
① > 0.6 m (2 ft)
Dogleg
• used to reduce the detrimental effect of high or variable
material velocity, especially when using a long fall chute
• for abrasive materials, line the chute with an abrasion resistant
material, or use an in-feed deadbox
Deadbox
• installed where the chute angle changes. This will cause the
material to impact upon itself, rather than the chute surface.
• used when the feeder discharge velocity is high, variable,
where long fall chute angles change, and if the material is
particularly abrasive
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
17
Description
3.1 Material feed examples
Pulsing feeder discharge damping
• install a temporary holding bin to receive pulsing material
discharge from a feeder. Then the material is gravity fed from
the bin to the flowmeter flowguide.
• provide manual or automatic control to ensure the holding bin
is neither emptied nor overfilled while the feeder is in
operation.
• bin could also be used for the integrator on-line calibration, (if
so equipped). Refer to the integrator instruction manual for bin
requirements.
• for drag conveyors, use a baffle plate installed at the conveyor
discharge to reduce the heavy material pulsing associated with
this type of feeder
Top view
① baffle
② conveyor discharge
③ slats
In-feed/discharge air pressure
• Vent the in-feed and discharge chutes to a common dust
collector if a material in-feed/discharge differential air pressure
is anticipated and rotary airlock feeders are not used.
• A tuning gate can be installed in each vent to balance the air
pressure.
• If a dust collector is not used, an air bypass chute can be
installed between the flowmeter in-feed and discharge chutes.
① to common dust
collector
SITRANS WF100
18
Operating Instructions, 02/2012, 7ML19985NB01-01
Description
3.1 Material feed examples
Flowguide capacity
CAUTION
If either the material bulk density and flowrate is near the flowmeter's in-feed diameter
upper limit, choose the next largest diameter.
160
2.56
140
2.24
4"
100mm
120
6"
150mm
8"
10"
200mm 250mm
1.92
100
1.60
80
1.28
60
0.96
40
0.64
20
0.32
0
Bulk density t/m³
%XON GHQVLW\ OEIWu
Refer to the following chart to ensure the flowguide capacity is suitable.
0
1
10
100
400
)ORZUDWH LQ WRQV SHU KRXU
Figure 3-1
Flowguide capacity chart
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
19
Description
3.1 Material feed examples
SITRANS WF100
20
Operating Instructions, 02/2012, 7ML19985NB01-01
Installing/Mounting
4
CAUTION
Installation shall be performed only by qualified personnel in accordance with local
governing regulations.
Preparation
Prepare the site in accordance to the Siemens Milltronics installation drawing(s) that are
available for download from our website: Siemens weighing (http://www.siemens.com/weighing).
If there is confusion or doubt to do with the installation, please consult your Siemens
representative.
CAUTION
When unpacking the flowmeter, avoid subjecting the unit to mechanical shock. Excessive
mechanical shock can cause damage to the housing or load cell/sensing plate assembly.
The flowmeter is shipped assembled with the sensing plate arrested to prevent damage to the
load cell.
The flowmeter should be visually inspected for shipping damage. If damage is suspected,
contact your Siemens representative and the shipping carrier.
CAUTION
When handling the flowmeter, ensure the shipping stop is in place to secure the sensing
plate.
Never subject the flowmeter to shock by hitting it when trying to position it.
WARNING
Welding
Use extreme caution when arc welding in the area of the flowmeter to ensure that no
welding current flows through the flowmeter, risking destruction of the load cell(s).
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
21
Installing/Mounting
Load cell handling
WARNING
Negative displacement on the load cell can functionally destroy the load cell. When
handling the load cell, care must be taken not to force the gap open.
Figure 4-1
Support load cell throughout handling in non-vertical positions
Figure 4-2
Improper handling may functionally destroy the load cell
Installation
1. Set the flowmeter housing in place ensuring that the flowguide and outlet gaskets are
correctly located (gaskets supplied by customer).
2. The housing must be vertical within 1° in two planes 90° apart.
3. Bolt the flowguide and outlet flanges to the process piping.
SITRANS WF100
22
Operating Instructions, 02/2012, 7ML19985NB01-01
Installing/Mounting
4. Remove the shipping stop
NOTICE
The hole in the enclosure for the shipping stop should be plugged with a bolt or cap to
ensure a dust-tight seal.
5. Connect the unit to the integrator
1
2 3 90º
6
4
2
3
5
①
②
③
④
⑤
⑥
Infeed (customer supplied)
Mounting hardware
Gasket
SITRANS WF100
Discharge (customer supplied)
Calibration pulley
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
23
Installing/Mounting
SITRANS WF100
24
Operating Instructions, 02/2012, 7ML19985NB01-01
5
Connecting
SITRANS WF100 wiring
2
1
r
e
d
w
h
t
b
l
k
+
e
x
c
①
②
③
e
x
c
g
r
n
s
i
g
+
s
i
g
s
h
l
d
3
s
h
l
d
Load cell
Conduit and box connector (not provided on hazardous option)
Customer junction box
Load cell
Milltronics integrator
SIWAREX FTC
RED
+ EXC
+ EXC
BLK
- EXC
- EXC
WHT
- SIG 'A'
- SIG
GRN
+ SIG 'A'
+ SIG
SHIELD
SHIELD
SHIELD
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
25
Connecting
SITRANS WF100
26
Operating Instructions, 02/2012, 7ML19985NB01-01
6
Commissioning
After all parts of the flowmeter system have been properly installed and connected, the
flowmeter system and integrator must be calibrated. The calibration is done using the test
weight(s) initially, however material tests are recommended to achieve the greatest accuracy.
Refer to the integrator instruction manual for programming and calibration details and for
information about material tests. All operating instructions are available for download from our
website:
Siemens weighing (http://www.siemens.com/weighing)
Test rate
The test rate is the material flowrate represented by the test weight. The test weight is used to
simulate the horizontal forces of the material hitting the sensing plate.
Calculating the test weight and test rate
Select the test weight to represent a calibration point of 60 to 80% of the design flowrate based
on the flowmeter calibration constant of 45 g/T/H (tons per hour).
Test weight = Design flowrate × Calibration point × Calibration constant
Test rate = Test weight ÷ Calibration constant
Figure 6-1
The calibration constant represents an average of a range of values covering various
material flow arrangements and materials handled by the flowmeter. It is an approximate
value to be used in the calculation of the test rate. Through the running of material tests, the
test rate may be factored to obtain an optimum value which should lie in the range of 50 to
100% of the design rate. The test rate should never exceed 100% of the design rate.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
27
Commissioning
For example:
If the design flowrate is 6 T/H, then:
Test weight 60% = 6 t/h × 60% × 45 g/t/h
= 162 g
Test weight 80% = 6 t/h × 80% × 45 g/t/h
= 216g
Therefore the test weight should be between 162 and 216 g.
If an available test weight of 200 g is used, then:
Test rate = 200 g ÷ 45 g t/h
= 4.444 t/h
Perform the zero calibration as described in the Calibration section of the integrator manual.
After the completion of the zero calibration, a span calibration, as described in the integrator
instruction manual, can be performed with the test weight(s) applied.
Span
1. Install the calibration pulley to the bracket on the flowmeter housing.
2. Hang the test weight over the calibration pulley using the test weight cable.
3. Perform the span calibration as described in the calibration section of the integrator
instruction manual.
SITRANS WF100
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Operating Instructions, 02/2012, 7ML19985NB01-01
Commissioning
4. After the span calibration has been completed, remove the test weight and pulley and store
them.
①
②
③
④
⑤
⑥
⑦
⑧
⑨
SITRANS WF100 housing
Hook
Calibration access hole (remove plug to access hook during calibration)
Retaining pin
Calibration pulley
Sensing plate
Calibration bracket
Cable
Test weight
Material test
Calibration of the flowmeter by test weight is not a dynamic simulation and yields only an
approximate span calibration. Effective material flow, friction, and velocity can only be
reproduced by running actual material tests.
At least two 5 minute samples should be taken to ensure repeatability. Refer to material test and
subsequent factoring of the flowmeter sections of the integrator manual.
Re-rating
Consult your local Siemens Milltronics representitive for re-rating.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
29
Commissioning
SITRANS WF100
30
Operating Instructions, 02/2012, 7ML19985NB01-01
Service and maintenance
7
Periodic recalibration
If the flowmeter is properly installed, the zero and span calibrations will require limited attention.
However, to maintain the flowmeter's accuracy, redo the zero and span calibration periodically.
The frequency of recalibration is dependent on the application in which the flowmeter is being
used and the severity of its operating conditions. Perform frequent recalibrations initially and
note the deviations, then reduce the frequency as time and experience dictate.
Refer to the Programming and calibration sections of the integrator manual.
System checks
WARNING
On hazardous approved flowmeters the load cell has an extra protective cover that protects
the electronic circuitry within the cell. Periodically clean the gap between the cover and the
cell to ensure material does not build up and reduce or stop deflection of the sensing plate.
If material sticks to the sensing plate, clean the impingement area regularly. If sticking of the
material persists, contact your Siemens Milltronics representative.
Check for material bridging across the load cell or sensing plate to the housing which can restrict
the movement of either component.
WARNING
Do not strike the flowmeter, its components, or adjacent piping to dislodge material.
Check for wearing of the sensing plate. If wear is excessive contact your Siemens Milltronics
representative.
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
31
Service and maintenance
Cleaning
The flowmeter's access door seal is removable for quick and easy cleaning.
CAUTION
Spraying the load cell directly with high pressure may damage the load cell.
Spare parts
The following are the recommended spare parts. As each may be available in more than one
option, consult Siemens Milltronics for assistance in ordering spare parts. In all correspondence
please quote the serial number of the unit for which the parts are required.
● Load cell
● Sensing plate
Replacing a load cell
Remove the load cell/sensing plate assembly from the housing for replacement or maintenance:
1. Remove the access cover and secure access door.
2. Dis-connect the load cell.
3. Hold the load cell by the upper cross piece.
4. Remove load cell mounting screws (2 places), and then lift load cell/sensing plate assembly
out of the housing. The cable will need to be pulled through the conduit (if installed) and any
cable glands that prevent removing the assembly.
SITRANS WF100
32
Operating Instructions, 02/2012, 7ML19985NB01-01
Service and maintenance
CAUTION
Avoid stressing or bending the assembly during removal or maintenance.
5. Set the assemblies in a safe place.
CAUTION
While transporting, support the load cell/sensing plate assembly as shown in Load cell
handling.
1
2
3
4
①
②
③
④
Load cell cable
Load cell mounting screws
Shipping stop
Sensing plate
Figure 7-1
Enclosure door removed for clarity
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
33
Service and maintenance
Installing the shipping stop
CAUTION
When moving the unit reinstall the shipping stop to prevent damage to the load cell/sensing
plate assembly.
1. With the sensing plate resting in its static position, insert shipping bolt as shown.
2. Tighten the nut against the housing to secure the bolt in place.
1
2
3
4
5
①
②
③
④
⑤
Sensing plate
Washer
Shipping stop
Nut
SITRANS WF100 housing
SITRANS WF100
34
Operating Instructions, 02/2012, 7ML19985NB01-01
Service and maintenance
Unit repair and excluded liability
All changes and repairs must be done by qualified personnel and applicable safety regulations
must be followed. Please note the following:
● The user is responsible for all changes and repairs made to the device.
● All new components must be provided by the Siemens Milltronics Process Instruments Inc.
● Only repair faulty components.
● Do not re-use faulty components.
If you have any technical questions about the device described in these Operating Instructions
and do not find the right answers, you can contact Customer Support:
● Via the Internet using the Support Request:
Support request (http://www.siemens.com/automation/support-request)
●
Via Phone:
– Europe: +49 (0)911 895 7222
– America: +1 423 262 5710
– Asia-Pacific: +86 10 6475 7575
Further information about our technical support is available on the Internet at
Technical support (http://support.automation.siemens.com/WW/view/en/16604318)
Service & Support on the Internet
In addition to our documentation, we offer a comprehensive knowledge base online on the
Internet at:
Service & Support (http://www.siemens.com/automation/service&support)
There you will find:
● The latest product information, FAQs, downloads, tips and tricks.
● Our newsletter, providing you with the latest information about your products.
● Our bulletin board, where users and specialists share their knowledge worldwide.
● You can find your local contact partner for Industry Automation and Drives Technologies in
our partner database.
● Information about field service, repairs, spare parts and lots more under "Services."
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
35
Service and maintenance
Additional Support
Please contact your local Siemens representative and offices if you have additional questions
about the device
Find your contact partner at:
Local contact person (http://www.siemens.com/automation/partner)
SITRANS WF100
36
Operating Instructions, 02/2012, 7ML19985NB01-01
8
Technical data
Accuracy
± 1 % of full scale, higher accuracy with linearizing function of integrator
Accuracy subject to: On factory approved installations the flowmeter system’s totalilzed weight will be
within the specified accuracy when compared to a known weighed material test sample. The test
rate must be within the specified range of the design capacity and held constant for the duration of
the test. The minimum material test sample must be equivalent to a sample obtained at the test
flow rate for at least ten minutes running time.
Load cell
construction
17-4 PH (1.4568) stainless steel construction with
304 (1.4301) stainless steel cover.
degree of protection
IP67 rated
excitation
10 V DC nominal, 15 V DC maximum
output
2 mV/V excitation at rated load cell capacity
non-linearity
0.02% of rated output
hysteresis
0.02% of rated output
non-repeatability
0.01% of rated output
capacity
2, 5, 10, 20 lb
overload
safe 150% of rated capacity
ultimate 300% of rated capacity
temperature
-40 to 75ºC (-40 to 167ºF) operating range
-18 to 65ºC (0 to 150ºF) compensated
Nominal sizes
100, 150, 200, 250 mm (4, 6, 8, 10")
Flow rate
3 to 200 t/h (4 to 220 STPH)
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
37
Technical data
Volumetric capacity
4"/100 mm
9.77 m3/hr (345 ft3/hr)
6"/150 mm
27.34 m3/hr (966 ft3/hr)
8"/200 mm
68.36 m3/hr (2414 ft3/hr)
10"/250 mm
107.42 m3/hr (3794 ft3/hr
Product
fine powder to 13 mm (1/2")
Operating temperature
-40 to 65 °C (-40 to 150 °F)
Material temperature
-40 to 65 °C (-40 to 150 °F)
Repeatability
0.2%
Construction
assembly
all welded housing and flowguide
material
mild steel, polyester powder painted
optional: 304 (1.4301) or 316 (1.4404) stainless
steel
gasketing
FDA approved silicone
sensing plate
304 (1.4301) stainless steel
optional: 316 (1.4404) stainless steel, wear
resistant coatings, low friction coating
SITRANS WF100
38
Operating Instructions, 02/2012, 7ML19985NB01-01
Technical data
Approvals
US/Canada
CSA/FM Class II, Div. 1, Groups E,F,G and Class
III
Europe
ATEX II 2D Ex tb IIIC T80°C Db IP65
CE
International
IECEx Ex tb IIIC T80°C Db IP65
Stainless steel options meet FDA and USDA
requirements for food processing
Australia
C-TICK
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
39
Technical data
SITRANS WF100
40
Operating Instructions, 02/2012, 7ML19985NB01-01
9
Dimension drawings
1
4
60°
2
3
6
6
5
Figure 9-1
Size
SITRANS WF100 dimensions
①
②
③
④
⑤
Flange ∅
(8 places)
⑥
4"
8 (203.2)
23.5 (596.9)
21.87
(555.5)
4 (100)
∅0.43 (11)
11.25
(285.8)
6"
10 (254)
33 (838.2)
31.12
(790.4)
6 (150)
∅0.43 (11)
13.35
(339.1)
8"
14 (355.6)
46 (1168.4)
42.62
(1082.5)
8 (200)
∅0.43 (11)
16.5 (419.1)
10"
16 (406.4)
52 (1320.8)
48.74
(1238.1)
10 (250)
∅0.43 (11)
19 (482.6)
Dimensions in inch (mm)
SITRANS WF100
Operating Instructions, 02/2012, 7ML19985NB01-01
41
Dimension drawings
SITRANS WF100
42
Operating Instructions, 02/2012, 7ML19985NB01-01
www.siemens.com/processautomation
For more information
www.siemens.com/level
www.siemens.com/weighing
Siemens AG
Subject to change without prior notice
Industry Sector
7ML19985NB01 Rev.1.1
1954 Technology Drive
© Siemens AG 2012
P.O. Box 4225
Peterborough, ON
Canada K9J 7B1
email: techpubs.smpi@siemens.com
www.siemens.com/processautomation
*7ml19985NB01*
Printed in Canada
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