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Dwyer Series DTFO User manual

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Series DTFO Variable-Area Flowmeter for Oil
Specifications - Installation and Operating Instructions
Bulletin F-DTFO
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Service: Compatibleoils.
Wetted Materials:
Body:316SSorbrass;
Spring:302SS;
Rangespring:302SS;
Magnet:PTFE-coated;
Meteringcone:AcetalorPTFE.
Seals:Buna.
Temperature Limits: -40to200°F(-40to93°C).
Pressure Limit:
DTFO-1BandDTFO-2B:3000psig(200bar);
DTFO-3S:1500psig(100bar).
Accuracy: ±2%FS.
Repeatability: ±1%FS.
Size: Diameterdialface2.5˝(63.5mm).
Process Connections: Seemodelchart.
Weight:
DTFO-1B:3lb(1.36kg);
DTFO-2B:5lb(2.27kg);
DTFO-3S:10lb(4.54kg).
The Series DTFO Variable-Area Flowmeter for Oil measuresoilrates
with ±2% of full-scale accuracy at an affordable price. Durable metal
construction ensures great compatibility and the strength to withstand
systempressuresofupto3000psig (200bar).Withawidevarietyof
flowrangesavailable,theSeriesDTFOcanbeusedwithmanydifferent
applicationsallataneconomicalprice.
Calibration
AllSeriesDTFOVariable-AreaFlowmetersforOilarecalibratedatthe
factory for mounting in the horizontal position and should be installed
thatwayformaximumaccuracy.
Theunitwillnormallyretainitsaccuracytolerancefortheusefullifeof
the device. If you want to check the accuracy, do so only with
instrumentsofcertifiedaccuracy.Donotattempttocheckaccuracywith
other flowmeters piped in series. Even minor variations in piping and
backpressurecancausesignificantdifferencesinindication.Ifindoubt,
returntheflowmetertothefactoryforacalibrationcheck.
1
1/16
[
17.53]
Ø2-59/64
[74.17]
3
[76.20]
3
[
76.20]
1
-9/64
[
28.96]
1˝ NPT
INLET &
OUTLET
1
-1/2
[
38.10]
1/2˝ NPT
INLET &
OUTLET
Ø2-59/64
[74.17]
5
-47/64
[
145.54]
1
[
25.40]
3/4
[19.05]
1/4˝ NPT
INLET &
OUTLET
1
1/16
[
17.53]
1˝ NPT CONNECTION
7
[
177.80]
3-5/32
[80.26]
1
-1/2
[
38.10]
1
/4˝ NPT CONNECTION
Ø
2
[
50.80]
R1
[25.40]
Ø
2-59/64
[
74.17]
3
[
76.20]
3-19/32
[91.44]
2
[50.80]
1
/2˝ NPT CONNECTION
Connection
1/4˝NPT
1/4˝NPT
1/4˝NPT
1/4˝NPT
1/4˝NPT
1/2˝NPT
1/2˝NPT
1/2˝NPT
1/2˝NPT
1/2˝NPT
1/2˝NPT
1˝NPT
1˝NPT
1˝NPT
1˝NPT
1˝NPT
Model
DTFO-1B-1O
DTFO-1B-2O
DTFO-1B-3O
DTFO-1B-4O
DTFO-1B-5O
DTFO-2B-1O
DTFO-2B-2O
DTFO-2B-4O
DTFO-2B-5O
DTFO-2B-8O
DTFO-2B-10O
DTFO-3S-10O
DTFO-3S-15O
DTFO-3S-20O
DTFO-3S-25O
DTFO-3S-30O
Range,
GPM Oil
0to1
0to2
0to3
0to4
0to5
0to1
0to2
0to4
0to5
0to8
0to10
0to10
0to15
0to20
0to25
0to30
Body
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
SS
SS
SS
SS
SS
Metering
Cone
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
Acetal
PTFE
PTFE
PTFE
PTFE
PTFE
Location
Selecta locationwheretheflowmetercan beeasily readand wherethe
temperature will not exceed 200°F (93°C). The mounting surface and
pipingtotheflowmetershouldbefreefromexcessivevibration.Ifpulsing
flow or vibration causes excessive pointer oscillation, contact factory for
waystoprovideadditionaldampening.
Because the device operates through a magnetic coupling system,
magneticmaterialneartheflowblockcanaffectaccuracy.Tominimizethe
effect of outside interference, keep magnetic materials at least 3 inches
(7.6cm)awayfromtheunit.
Inlet Piping
Itis agood practiceto havethe inletportoftheflowmeter beas freeof
elbows,restrictionsandsizechangesaspossible.Inletpipingshouldbeas
close to the flowmeter connection size as possible to avoid possible
turbulence,whichcanoccurwithdrasticsizechanges.Thelengthofthe
inletpipinghasverylittleeffectonnormalpressurefedflowmeters.
For vacuum service, the inlet piping should be as short and open as
possible to allow operation at or near atmospheric pressure, thus
maintainingtheaccuracyofthedevice.Notethatforvacuumservice,any
flowcontrolvalvemustbeinstalledonthedischargesideoftheflowmeter.
Outlet Piping
Piping on the outlet port should be at least as large as the flowmeter
connection.
Operation
Ifthemediaislikelytobedirty,itisrecommendedthata50–micronfilter
isplacedupstreamoftheinletporttoassurea cleanfluidmediumflows
throughtheflowmeter.Afterallconnectionsarecomplete,introduceflowas
slowlyaspossibletoavoiddamage.Itmaybenecessarytopurgeairfrom
thesystembeforereadingsstabilize.Nolubricationorperiodicservicingis
required.Keepcaseexterior,includingfrontcover,cleanforbestvisibility.
MAINTENANCE/REPAIR
Upon final installation of the Series DTFO, no routine maintenance is
required.TheSeriesDTFOisnotfieldserviceableandshouldbereturned
if repair is needed. Field repair should not be attempted and may void
warranty.
WARRANTY/RETURN
Referto“TermsandConditionsofSales”inourcatalogandonourwebsite.
ContactcustomerservicetoreceiveaReturnGoodsAuthorizationnumber
before shipping the product back for repair. Be sure to include a brief
descriptionoftheproblemplusanyadditionalapplicationnotes.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
©Copyright2012 DwyerInstruments,Inc. PrintedinU.S.A.6/12 FR# R4-443966-00Rev.3
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