Onicon F-2500 series Operating instructions

F-2500 Series Vortex
Flow Meter Installation
and Operation Guide
For software version CF 4.7 and higher
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www.onicon.com • [email protected] 11-110688-3
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F-2500 Flow Meter Manual 11/11 - 0688-3 Page 2
SAFETY INFORMATION
This meter was calibrated at the factory before shipment. To ensure correct use of the meter, please read this
manual thoroughly.
Regarding this Manual:
 • Thismanualshouldbepassedontotheenduser.
 • Beforeuse,readthismanualthoroughlytocomprehenditscontents.
 • Thecontentsofthismanualmaybechangedwithoutpriornotice.
 • Allrightsreserved.Nopartofthismanualmaybereproducedinanyformwithout
  ONICON’swrittenpermission.
 • ONICONmakesnowarrantyofanykindwithregardtothismaterial,including,butnot
limited to, implied warranties of merchantability and suitability for a particular purpose.
 • Allreasonableefforthasbeenmadetoensuretheaccuracyofthecontentsofthismanual.
  However,ifanyerrorsarefound,pleaseinformONICON.
 • ONICONassumesnoresponsibilitiesforthisproductexceptasstatedinthewarranty.
 • Ifthecustomeroranythirdpartyisharmedbytheuseofthisproduct,ONICONassumesno
responsibility for any such harm owing to any defects in the product which were not
predictable, or for any indirect damages.
Safety Precautions:
 Thefollowinggeneralsafetyprecautionsmustbeobservedduringallphasesofinstallation,
 operation,service,andrepairofthisproduct.Failuretocomplywiththeseprecautionsorwith
 specicWARNINGSgivenelsewhereinthismanualviolatessafetystandardsofdesign,manufacture,
 andintendeduseoftheproduct.ONICONIncorporatedassumesnoliabilityforthecustomer’s
 failuretocomplywiththeserequirements.Ifthisproductisusedinamannernotspeciedinthis
 manual,theprotectionprovidedbythisproductmaybeimpaired.
The following symbols are used in this manual:
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WARNING
Messages identied as WARNING contain information regarding the personal safety of individuals
involved in the istallation, operation or service of theis product.
CAUTION
Messages identied as CAUTION contain information regarding the potential damage to the product
or other ancillary products.
IMPORTANT NOTICE
Messages identied as IMPORTANT NOTICE contain information critical to the proper operation of
the product.
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F-2500 Flow Meter Manual 11/11 - 0688-3 Page 3
TABLE OF CONTENTS
1.0 INTRODUCTION .................................................................................................4
1.1 Purpose Of This Guide ..............................................................................4
1.2 Principal Of Operation ..............................................................................4
1.3 Typical Flow Meter Installation ................................................................4
1.4 Features And Specications......................................................................5
1.5 Additional Required Hardware.................................................................6
1.6 Additional Hardware That May Be Required...........................................7
1.7 Working Environment ...............................................................................8
1.8 Warranty And Serial Number....................................................................8
2.0 UNPACKING ......................................................................................................9
2.1 Checking That You Have Received Everything ........................................9
3.0 INSTALLATION INFORMATION ......................................................................10
3.1 Site Selection ...........................................................................................10
3.1.1 Orienting The Meter With Respect To The Direction Of Flow 10
3.1.2 Minimum Upstream And Downstream Straight
Run Requirements .....................................................................11
3.1.3 Properly Orienting The Meter In The Pipe...............................12
3.1.4 Recommended Piping Congurations ......................................13
3.1.5 Piping Congurations That Must Be Avoided ..........................14
3.2 Mechanical Installation ...........................................................................15
3.2.1 Re-Orienting The Display..........................................................15
3.2.1.1 Rotating The Electronics Enclosure..........................15
3.2.1.2 Rotating The Display .................................................16
3.2.2 Gaskets .......................................................................................16
3.2.3 Lifting The Meter.......................................................................17
3.2.4 Preparing The Installation Site .................................................17
3.2.5 Flanged Flow Meter Installation...............................................18
3.2.6 Wafer Flow Meter Installation...................................................18
3.2.7 Insulating The Meter .................................................................19
3.3 Electrical Installation...............................................................................20
3.3.1 Analog Output ...........................................................................20
3.3.2 Pulse Output ..............................................................................20
3.3.3 Remote Mount Cable Wiring Instructions ................................21
4.0 START-UP & TROUBLESHOOTING..................................................................22
4.1 Start Up ....................................................................................................22
4.2 Measurement Mode .................................................................................22
4.3 Operating The Display.............................................................................23
4.4 Error Handling .........................................................................................24
4.5 Troubleshooting Hints .............................................................................25
APPENDIX
Model number codication ...................................................................A-1
Operating ranges for steam, water and air ............................................A-2
Meter dimensions .......................................................................... A-3/A-4
Remote Mount Installation Drawings ...................................................A-5
Conditions of Sale..................................................................................A-6
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F-2500 Flow Meter Manual 11/11 - 0688-3 Page 4
SECTION 1.0: INTRODUCTION
We, at ONICON INCORPORATED, would like to thank you for purchasing our F-2500 Series Vortex
Flow Meter. As our valued customer, our commitment to you is to provide fast reliable service and
assistance, while continuing to offer you new products to meet your growing ow measurement needs.
1.1 PURPOSE OF THIS GUIDE
The purpose of this guide is to provide installation and commissioning procedures and basic
operating and servicing instructions for ONICON F-2500 Series Vortex Flow Meters.
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Output signals to
control system
Insulation
WARNING
Only qualied service personnel should attempt to install or service this equipment. Serious injury
may result from the improper installation or use of this equipment.
1.2 PRINCIPAL OF OPERATION
ONICON F-2500 vortex ow meters utilize Karman’s vortex street principle to detect changes
in velocity in the medium owing around a bluff body contained within the meter body. A
volumetric ow rate is then derived by utilizing the known cross-sectional area of the meter body
and the average velocity of the medium. A built-in temperature sensor and an optional pressure
sensor provide the compensation necessary for direct mass ow measurement of saturated or
superheated steam, liquids and a variety of industrial gases.
1.3 TYPICAL FLOW METER INSTALLATION
ONICON’s F-2500 In-line Vortex Flow Meters are suitable for volumetric and mass ow
measurement of air, gases, liquids or steam in a wide variety of applications.
2-wire connection
for ow rate
2-wire connection
for totalization
1-earth wire
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1.4 FEATURES AND SPECIFICATIONS
• Massowmeasurementofsaturatedsteamusingbuilt-intemperaturecompensation
Flow rate, ow total and operating temperature are displayed. A 4 – 20mA output for ow
rate and a scaled pulse output for ow total are available.
• Volumetricowmeasurementofliquids
Flow rate, ow total and operating temperature are displayed. A 4 – 20mA output for ow
rate and a scaled pulse output for ow total are available.
• Standardvolumetricowmeasurementofairorgasesusingbuilt-intemperature
compensation and optional pressure compensation
Flow rate, ow total, operating temperature and operating pressure are displayed. A
4 – 20mA output for ow rate and a scaled pulse output for ow total are available.
• Massowmeasurementofsuperheatedsteamusingbuilt-intemperaturecompensationand
optional pressure compensation
Flow rate, ow total, operating temperature and operating pressure are displayed. A
4 – 20mA output for ow rate and a scaled pulse output for ow total are available.
• HartFSKserialcommunicationsisavailablewithallversions.GENERAL SPECIFICATIONS
Display Electronics Enclosure
Sensor Body
Mounting
Flange
Flow
Direction
Arrow
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1.5 ADDITIONAL REQUIRED HARDWARE
The installer is responsible for providing the following materials.
 • ANSIClass150,300or600angesasrequired.Flangesmustbeofthesamesizeas
the mating surfaces on the meter.
 • Fastenerstoconnectthemetertotheprocesspiping.ONICONrecommendstheuse
of double ended studs with nuts and washers to secure the ange connections.
 • PrecutgasketsthatconformtotherequirementsofANSIB16.5andaremadefroma
material suitable for the application. DO NOT USE HAND CUT GASKETS.
In addition, most installations will also require the following items that must be provided by
the installer.
 • Oneeccentricpipereducerandoneeccentricpipeexpander
 • Asufcientlengthofpipeofthesamediameterasthemetertomeetthe
installation requirements outlined in Section 3 of this manual.
 • Pipesupportsandthenecessaryfastenersrequiredtoproperlysupportthemeter
and minimize pipe vibration.
CALIBRATION
Each meter undergoes a 5 point velocity calibration from
0-250 ft/sec
ACCURACY
Steam & Gases:
Accurate to within ± 1.5% of reading (Mass)
Steam & Gases:
Accurate to within ± 1.0% of reading (Volumetric)
Liquids:
Accurate to within ± 0.75% of reading (Volumetric)
Re ≥ 20,000
Repeatability:
± 0.1%
Long term stability:
± 0.1% over a period of 1 year
PROGRAMMING
Each meter is programmed at the factory based on
application specic data provided by the customer. Meter
is eld re-programmable via keypad, with coded access for
security.
MEMORY
Nonvolatile EEPROM memory retains all program
parameters and totalized values in the event of power loss.
DISPLAY
2 line, 10 character alphanumeric LCD
(Optional) Remote mount transmitter version available;
includes a xed length 32 ft cable. The cable length
cannot be altered.
Note: meters provided with integral pressure compensation
cannot use the remote mount transmitter option.
OUTPUT SIGNALS
Rate: 2-wire, 4 – 20mA, 14 – 36 VDC, Maximum resistance:
R ≥ ((Vsupply – 14V) / 22mA)
Totalization: 2-wire, Scaled pulse, 0.5Hz, 30VDC & 100mA
maximum
Digital: Hart, FSK
NETWORK INTERFACE
HART – FSK
TEMPERATURE RANGE
Ambient temperature range: -40°F (-40°C) to +85°F (+85°C)
Medium temperature range: -40°F (-40°C) to +464°F (+240°C)
MAINTENANCE
Periodically inspect the cable glands and the enclosure
for signs of damage. Inspect installation hardware for loose
connections.
MECHANICAL
Electronics Enclosure:
Standard: Intefral epoxy painted aluminum, NEMA 6
Optional: Remote mount enclosure with xed 32 ft cable
(Note: cable length cannot be altered.)
CONNECTION TYPE
Standard: ½” – 3” (DN15 – DN80) ANSI 300 Class Flange
4 – 12” (DN100 – DN300) ANSI 150 Class Flange
Optional: ½” – 3” (DN15 – DN80) ANSI 150 Class Flange
6 – 12” (Dn150 – DN300) ANSI 300 Class Flange
½” – 12” (DN 15 – DN300) ANSI 600 Class Flange
1 – 4” (DN25 – DN100) Wafer
ELECTRICAL
Rate: 14 - 36VDC, 22mA maximum
Totalization: 5 - 30 VDC, 100 mA maximum
WIRING
Flow signals: Use 18 – 22 AWG shielded cable
Earth connection: Use 14 – 18 AWG stranded wire
MAXIMUM OPERATING PRESSURE
≤ Flange rating or 1400psi (100 bar)
Note: Specications subject to change without notice.
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F-2500 Flow Meter Manual 11/11 - 0688-3 Page 7
SERRATIONS SHOWN LOCATED UNDER GASKET, IF PROVIDED
NOTE: DIMENSION D INDICATES I.D. FOR SERRATIONS
GASKET THICKNESS, NOMINAL
DIM B
DIM D DIM A
DIM C
0.125
Size Dimension
A*
Dimension
B*
Dimension
C*
Dimension
D* # of Holes Part #
2” (DN50) 3.93 1.0625 0.28 2.14 35 14382
3” (DN80) 5.31 1.0625 0.43 3.24 35 14383
4” (DN100) 6.26 1.0625 0.55 4.22 35 14384
6” (DN150) 8.50 1.0625 0.78 6.07 35 14385
8” (DN200) 10.62 1.0625 1.02 7.98 35 14386
10” (DN250) 13.23 1.0625 1.30 10.02 35 16570
12” (DN300) 15.0 1.0625 1.53 12.0 35 16577
*All dimensions in inches
1.6 ADDITIONAL HARDWARE THAT MAY BE REQUIRED
1.6.1 Flow Straightners
Flow straighteners may be required when an insufcient straight
run of pipe is available upstream of the proposed meter location.
ONICON provides ow straighteners as an optional accessory.
ONICON ow straighteners are wafer style ow conditioners
designed to be installed between two anges (provided by
installer) that are located a specic distance upstream of the ow
meter. The use of ow straighteners signicantly reduces the
upstream straight pipe length requirement for ONICON Vortex
Flow Meters.
The size of the ow straightener must match the meter size (as
opposed to the original pipe size).
The ow straightener is made from 304 stainless steel and is
provided with gaskets attached to each face.
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1.7 WORKING ENVIRONMENT
The F-2500 was designed for installation and use in typical industrial environments.
•Theambientoperatingtemperaturerangeis-40°F(-40°C)to185°F(85°C)
• Donotexposethemetertocorrosiveliquidsorfumes.
• Donotinstallthemeterindirectsunlight.
• Avoidinstallationlocationswherethemeterwillbeexposedtovibrationsinthe
piping system.
• Donotinstalltheowmeterdownstreamofapistoncompressorunlessitisdownstream
of the air tank.
• Donotinstallthemeterdownstreamofrotarypistonowmeters.
• Locatethemeterasfarawayaspossiblefrompressurereducingandcontrolvalves.
• Donotrunsignalcablesforthemeterinconduitwithmainspowercables.
1.8 WARRANTY AND SERIAL NUMBER
Warranty
ONICON’s complete warranty is included in Appendix D of this manual as part of the
“Conditions of Sale”. ONICON provides a two-year warranty.
Serial Number
The F-2500 has a serial number located on the identication label on the side of the
electronics enclosure. Please refer to this number in all communications and correspondence
with ONICON.
Remote mount versions of the F-2500 will have a second serial number label located on the
junction box mounted on the sensor body.
IMPORTANT NOTE
F-2500 transmitters and sensor bodies are two parts of one uniquely calibrated system and must
be installed together. Mixing components from other systems will result in signicant calibration
errors.
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F-2500 Flow Meter
Product Brochure
Installation and Operation Guide
Calibration Data Sheet
Magnet
SECTION 2.0: UNPACKING
The F-2500 is generally shipped in one package unless optional hardware or equipment is ordered.
Notify the freight carrier (all products are shipped insured) and ONICON if any items are damaged in
transit. Save all packing material for inspection by the freight carrier.
2.1 ENSURING THAT YOU HAVE RECEIVED EVERYTHING
Standard Documentation
Enclosed with each F-2500 is a comprehensive documentation package that includes the
following items:
 • ProductBrochure
 • TheF-2500VortexFlowMeterInstallationandOperationGuide
 • F-2500CalibrationDataSheet
 • Magnet
Please notify ONICON if any of these items are missing.
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IMPORTANT NOTE
F-2500 transmitters and sensor bodies are two parts of one uniquely calibrated system and must
be installed together. Mixing components from other systems will result in signicant calibration
errors.
Integral Mount Transmitter
F-2500 Vortex meters with integrally mounted transmitters are shipped fully assembled.
Remove the meter from the shipping carton and inspect it for physical damage.
Remote Mount Transmitter
F-2500 Vortex meters ordered with the remote transmitter mounting option will be provided
in one carton that contains the ow sensor body, the transmitter with the mounting hardware
and the interconnecting cable. Remove each item from the shipping carton and inspect it for
physical damage.
Flow Straightener
Flow straighteners are optional accessories that may be required for proper installation. Flow
straighteners will be shipped in a separate carton. Remove each straightener from the shipping
carton and inspect it for physical damage.
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SECTION 3.0: INSTALLATION INFORMATION
The F-2500 Vortex Flow Meter must be installed by experienced plumbers and pipe tters qualied to
work with pressurized liquid, steam and/or gas ow. The installation must conform to federal, state and
local building codes. ONICON will be happy to assist with technical recommendations and to provide
guidance via telephone or email. On site engineering, installation and service are also available, at an
additional cost.
3.1 SITE SELECTION
Careful attention in locating the point in the piping system where the ow meter will be installed
will ensure accurate and reliable operation. When selecting an installation site, consider the criteria
contained in section 1.7 Working Environment, as well as the following.
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3.1.1 Orienting the Meter With Respect to the Direction of ow
The ow direction arrow on the neck of the sensor body as shown below must always be
oriented in the direction of ow in the pipe. This will correctly orient the bluff body so that
it faces incoming ow.
CAUTION
The installation guidelines presented below are minimum requirements for proper operation of this
ow meter.
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CAUTION
Flow meters incorrectly oriented with respect to the ow direction will not function.
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3.1.2 Minimum Upstream and Downstream Straight Run Requirements
ECCENTRIC REDUCER, UPSTREAM
PIPE RUN
FLOW DIRECTION
ANSI CLASS 300 FLANGES
5 DIAMETERS
ECCENTRIC EXPANSION, DOWNSTREAM
PIPE RUN
ONICON F-2500 SERIES
VORTEX FLOW METER
OPTIONAL
FLOW STRAIGHTENER
UPSTREAM METER RUN*
2 PIPE DIAMETERS
Obstruction
*Minimum upstream
pipe run required
Without
ow
straightener
With
ow
straightener
Single 90 20 Dia 12 Dia
Tee 20 Dia 12 Dia
RDCR/EXPNDR 20 Dia 12 Dia
Two 90’s Same
Plane
30 Dia 17 Dia
Ball/Gate Valve
Fully Open
30 Dia 17 Dia
Two 90’s Out of
Plane
40 Dia 22 Dia
Control Valve 50 Dia 27 Dia
P.R.V. 50 Dia 27 Dia
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IMPORTANT NOTE
Always use the maximum available straight run. When more than the minimum required straight
run is available; place the excess straight run upstream of the meter location unless there is a control
valve directly downstream of the meter. When a control valve is directly downstream of a meter,
maximize the distance from the downstream valve.
CAUTION
Modulating valves and pressure reducing valves tend to be noisy when operating at the very
low end of their operating range. This noise will cause disruptive vibrations that can affect the
operation of the meter even if the valve is located on the downstream side of the meter. Maximize
the distance from any valve that is likely to operate at or below its minimum operating range, even
if the valve is separated from the meter by elbows or other obstructions.
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IMPORTANT NOTE
Depending on the installation orientation it may be necessary to rotate the display. Refer to Section
3.2 for detailed instruction on how to rotate the enclosure.
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3.1.3 Properly Orienting the Meter in the Pipe
The following orientations are recommended:
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3.1.4 Recommended Piping Congurations
The following piping congurations are recommended for all liquid ow applications.
This conguration ensures that the pipe will always be full when
transitioning from downward vertical ow to horizontal ow.
This orientation, complete with the vertical riser, is required when
installing a meter in a vertical pipe with downward ow.
Installing the meter in a vertical pipe with upward ow is acceptable.
Installing the meter in an inclined pipe with upward ow is
acceptable.
The following piping conguration is recommended for steam, air and gas ow applications.
When installed in a raised pipe section, condensation is
prevented from owing through the meter.
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3.1.5 Piping Congurations That Must be Avoided
The following piping congurations must be avoided for all liquid ow applications
The following piping conguration must be avoided for steam, air and gas ow applications.
When upstream of a discharge point, there is a risk that the pipe
may not always be full.
When installed in a downward owing pipe there is a risk that the
pipe may not always be full.
When installed in a raised pipe section, there is a risk that gas
bubbles will form at the top of the pipe.
When installed in a horizontal pipe run between two vertical
risers, condensation will collect in the pipe and the meter.
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3.2.1 Re-orienting the Display
Both the electronics enclosure and the display can be rotated to change the viewing angle
for the display. Determine the orientation of the display based on the piping conguration
and meter orientation and adjust the enclosure and or display as necessary prior to
installation.
3.2 MECHANICAL INSTALLATION
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IMPORTANT NOTE
ONICON vortex ow meters are precision instruments that must be installed in accordance with the
instructions contained in this manual in order to maintain their accuracy and reliability. Failure to
follow the instructions outlined below and in sections 1.7 and 3.1 will result in erratic operation
and reduced accuracy.
!
WARNING
The F-2500 Vortex Flow Meter must be installed by experienced plumbers and pipe tters qualied
to work with pressurized liquid, steam and/or gas ow. The installation must conform to good trade
practices and the guidelines set forth in this manual. Failure to do so may result in injury to the
installers and or operators of this product.
IMPORTANT NOTE
Rotate the enclosure or display to the proper viewing angle before attempting to mount the meter in
the piping system.
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3.2.1.1 Rotating the electronics enclosure
Remove the (4) 5mm Allen head screws that secure the electronics enclosure as
shown below. Carefully lift and rotate the enclosure to the proper orientation
taking care not damage the wiring that connects the sensor body to the electronics
enclosure. Re-attach the enclosure to the sensor body.
!
CAUTION
Care must be taken to prevent damage to the sensor wires that connect the electronics to the sensors
located in the meter body.
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3.2.1.2 Rotating the display
To rotate to display, begin by unscrewing the cover from the front of the
electronics enclosure. Next, loosen but do not remove the 2 retaining screws as
shown below. With both screws loose, carefully pull the display out away from
the enclosure releasing it from the 4 mounting posts. Rotate the display as needed
and re-insert the mounting studs into the 4 posts. Tighten the 2 retaining screws
and re-install thecover.
!
CAUTION
Do not use hand cut gaskets. It is critical that no part of the gasket protrude into the ow stream.
Gaskets protruding into the ow stream will cause erratic ow readings and signicant errors in the
ow measurement.
3.2.2 Gaskets
ONICON does not supply gaskets. Use gaskets that conform to ANSI B16.5 standards and
are suitable for the application. Use only pre cut gaskets.
Retaining screws
Interconnecting cable
!
CAUTION
Take all necessary precautions to prevent moisture, dirt or debris from entering the meter whenever
the cover is removed from the electronics enclosure.
Loosen but do not remove
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3.2.3 Lifting the Meter
Lift meter as shown below using straps. Do not use chains that will damage the paint
on the enclosure.
3.2.4 Preparing the Installation Site
Install the pipe anges paying particular attention to the distance between each ange as
shown below. Meter dimensions are listed in Appendix C.
Lift meter body using
straps as shown above.
Do not attempt to lift
the meter by the
electronics enclosure.
Do not attempt to lift the
meter by the pressure
sensor.
Distance = meter length + gasket thickness x 2
When properly installed, the ow
meter, anges and pipe will all
have the same diameter and the
gaskets will not protrude into the
ow stream.
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3.2.5 Flanged Flow Meter Installation
Install the ow meter as follows.
•Attachtheowmetertoonepipeangeusingseveralboltsandnuts.
•Insertthegasketbetweentheangeandraisedfaceofthemeterange.
•Carefullyalignthegasketsothatitisconcentricwiththeraisedfaceofthemeter
ange. The gasket must not protrude into the pipe.
•Installtheboltsandnutsontheotherange.
•Insertandcarefullyalignthesecondgasket.Thegasketmustnotprotrudeintothepipe.
•Tightentheangeboltsinstages;alternatinginadiagonalpatternacrosstheange 
until the proper amount of torque has been applied.
3.2.6 Wafer Flow Meter Installation
Install the meter as follows.
•Installmountingboltthroughholes“A”ineachangeasshownabove.Donottighten
the nuts and bolts.
•Installasecondboltthroughholes“B”.Donottightenthenutsandbolts.
•Placethemeterbetweentheanges.
•Insertgasketsbetweenthesensorbodyandtheanges.
•Carefullyalignthegasketssothattheydonotprotrudeintothepipe.
•Conrmthattheangesarealignedwitheachother.
•Installtheremainingmountinghardwarebutdonottighten.
•Turnthecenteringringcounterclockwisetoalignthesensorbody.
•Re-conrmthatthegasketsarestillproperlyalignedandnotprotrudingintotheow
stream at any point.
•Tightentheangeboltsinstages;alternatinginadiagonalpatternacrosstheange
until the proper amount of torque has been applied.
Installation hardware
Sensor body aligned
with ow direction
Pre Cut gasket
Centering Ring
Sensor body aligned
with ow direction
Gasket
A
AB
B
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3.2.7 Insulating the Meter
Care must be taken when insulating the meter. The insulation must not extend up the neck
of the ow meter beyond the point shown below.
!
CAUTION
Insulating the neck of the ow meter may cause the electronics to exceed the recommended
maximum operating temperature.
Insulation
Maximum height
of insulation
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Install signal cables and earth wire through the conduit connection or strain relief located on the
side of the enclosure.
3.3.1 Analog Output
The F-2500 4-20mA output is an electrically isolated, passive (loop powered)
2-wire output. Use 18 - 22 AWG stranded cable with shield.
•Supplyvoltagerange:14–36VDC
•Maximumloadresistance:Rmax(1000max)
3.3.2 Pulse Output
The F-2500 open collector pulse output is an electrically isolated, passive 2-wire
output. Use 18 - 22 AWG stranded cable with shield.
•Supplyvoltagerange:5–30VDC
•Maximumcurrent:100mA
•Maximumpowerdissipation:250mW
•Maximumpulserate:0.5Hz
3.3 ELECTRICAL INSTALLATION
The F-2500 Series Vortex Flow Meter is a 2-wire loop powered device. Two additional wires are
required to utilize the pulse output and a separate earth wire is recommended to minimize the
possibility of electrical interference.
To access electrical connections, remove the rear cover from the electronics enclosure.
!
CAUTION
Take all necessary precautions to prevent moisture, dirt or debris from entering the meter whenever
the cover is removed from the electronics enclosure.
F-2200 Series Vortex Flow Meter Installation and Operation Guide • Revised 1/08
17
3.3 WIRING TERMINATIONS
3.3.2 TEMPERATURE MEASUREMENTS
ONICON F-2000 series vortex meters are supplied with an internal PT 1000 type RTD tem-
perature sensor located within the shedder bar. This sensor provides an accurate temperature
measurement at the point where the fl ow rate is being measured. Flow meters supplied with
this option will display the medium temperature and deliver an output signal that is tempera-
ture compensated for mass and/or normalized fl ow.
The standard F-2000 series vortex meter is a 2-wire loop powered device. Wiring connections are shown
below.
CAUTION
• Do not remove enclosure covers in any wet environment
• Keep dirt and debris out of electronics enclosure
• Keep threads lubricated (silicone based lubricant)
• Do not over tighten covers. Use special tool for removal only.
!
4-20 mA
100 ohms
minimum
Earth
Connection
4-20 mA (-)
4-20 mA (+)
Pulse Output (-)
Pulse Output (+)
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