Teledyne HASTINGS 200 Series User manual

126B - PAGE 1
HASTINGS 200 SERIESHASTINGS 200 SERIES
HASTINGS 200 SERIESHASTINGS 200 SERIES
HASTINGS 200 SERIES
FF
FF
FAST RESPONSEAST RESPONSE
AST RESPONSEAST RESPONSE
AST RESPONSE
MASS FLOWMETERSMASS FLOWMETERS
MASS FLOWMETERSMASS FLOWMETERS
MASS FLOWMETERS
INSTRUCTION
INSTRUMENTS
TELEDYNE HASTINGS
INSTRUCTION MANUAL

126B - PAGE 2
Manual Print HistoryManual Print History
Manual Print HistoryManual Print History
Manual Print History
Theprint historyshownbelowliststheprintingdatesofallrevisionsandaddendacreatedforthis
manual.Therevisionlevelletterincreasesalphabeticallyasthemanualundergoessubsequent
updates.Addenda,whicharereleasedbetweenrevisions,containimportantchangeinformationthat
theusershouldincorporateimmediatelyinto themanual.Addendaarenumberedsequentially.
Whenanewrevisioniscreated,alladdendaassociatedwiththepreviousrevisionofthemanualare
incorporatedintothenewrevisionofthemanual.Eachnewrevisionincludesa revised copy of this
print history page.
RevisionB(DocumentNumber126-082000) ............................................................ August 2000
RevisionC(DocumentNumber126-082005)............................................................ August2005
HastingsInstrumentsreservestheright to change or modify the design of its equipmentwithout
anyobligationtoprovidenotificationofchangeorintent to change.
Visit www.teledyne-hi.com for WEEE disposal guidance.

126B - PAGE 3
TABLE OF CONTENTS
SECTION 1.0 GENERAL INFORMATION..............................................................................................5
1.1 Features............................................................................................................... 5
1.2 Specifications ...................................................................................................... 5
1.3 Accessories .......................................................................................................... 6
1.3.1 Power Supplies................................................................................................. 6
1.3.2 Alarms.............................................................................................................. 6
1.3.3 Totalizer............................................................................................................ 6
1.3.4 4-20 mA Current Converter ............................................................................ 6
SECTION 2.0 INSTALLATION AND OPERATION ................................................................................. 7
2.1 Receiving Inspection ........................................................................................... 7
2.2 Power Requirements ........................................................................................... 7
2.3 OutputVoltage .................................................................................................... 7
2.4 Mechanical Connections .................................................................................... 7
2.5 Electrical Connections ........................................................................................ 8
2.6 Operation ............................................................................................................ 8
2.6.1 Power Supply Operation.................................................................................. 8
2.6.2 AmbientTemperature....................................................................................... 8
2.6.3 Zero Check ...................................................................................................... 8
2.7 Range Changing.................................................................................................. 8
SECTION 3.0 THEORY OF OPERATION ............................................................................................. 9
3.1 Overall Functional Description........................................................................... 9
3.2 Sensor ................................................................................................................. 9
3.3 Electronics .......................................................................................................... 10
3.4 Shunt .................................................................................................................. 10
SECTION 4.0 MAINTENANCE ........................................................................................................... 13
4.1 Introduction........................................................................................................ 13
4.2 Authorized Maintenance ..................................................................................... 13
4.3 Adjustments......................................................................................................... 13
4.3.1 Calibration Procedure...................................................................................... 13
4.3.2 ResponseTimeAdjustments ............................................................................ 13
4.3.3 Miscellaneous Adjustments .............................................................................. 13
4.4 End Cap Removal............................................................................................... 14
4.5 Range Changes ................................................................................................... 14

126B - PAGE 4
4.6 Printed Circuit Board Replacement .................................................................... 15
4.7 Sensor Replacement............................................................................................ 15
4.8 Troubleshooting .................................................................................................. 15
SECTION 5.0 REPLACEMENT PARTS.................................................................................................17
SECTION 6.0 WARRANTY AND REPAIR .............................................................................................. 19
SECTION 7.0 DIAGRAMS AND DRAWINGS ........................................................................................ 21
AssemblyDiagram,PC810FastReponse.............................................................................22
Schematic, PC-810 Fast Response .................................................................................23
HFM-200OutlineDrawng................................................................................................24
HFM-201 Outline Drawing....................................................................................... 25
HFM-200B Outline Drawing .................................................................................... 26
Laminar Flow Element Outline Drawing .................................................................. 27

126B - PAGE 5
1.0 GENERAL INFORMATION
HastingsMassFlowmetersaredesignedtoaccuratelymeasuremassflowwithoutcorrectionsor
compensationsforgaspressureandtemperature.Duetoalinear electrical output signal, the flowmeters
areidealforusewithtotalizersandrecorders.HastingsMassFlowmetersdonotrequireanyperiodic
maintenanceundernormaloperatingconditionswithcleangases.Nodamagewilloccurfromtheuseof
moderateoverpressuresoroverflows.
Thestandardflowmetercalibrationisforair.Specialcalibrationsformostothergasessuchasoxygen,
nitrogen,hydrogen,andcarbonmonoxideareavailableon special order, or by use of a gas multiplier.
Theseinstrumentsarecalibratedwithairatthe factory,thentheoutputisadjustedusinggascorrection
factors.
1.1 Features1.1 Features
1.1 Features1.1 Features
1.1 Features
HastingsFastResponseHFMFlowmetershaveresponsetimes of less than two seconds to 98% of
a0-100% step change with less than 2%overshoot.
FastResponse HFM Flowmetersareavailablewitha15-pin“D”connectorandarepinforpin
compatiblewithmostothermanufacturers’ thermal massflowmeterswith20-pinconnectors.
HFMModelsincorporatearemovable/replaceablesensorwhichvirtually eliminates long downtime
dueto clogging,the most commoncause of failure inthe industry.
Eachflowmeterhasashuntwhichcanbequicklyandeasilyadjustedinthefieldtodifferentranges,
however,recalibrationisnormallyrequired.
A100micronfilterislocatedupstreamofthe shunt and sensor to eliminate most of the larger impurities
inthesystemwhichtendtoplugthermalmassflowmeters.
TheModel HFM Flowmeter comes in 15 standard ranges from 0-10SCCM to 0-500SLPM. Special
rangesareavailableuponrequest.
ModelHFMFlowmetersareconstructed of 300 series stainless steel.VitonisstandardforO-rings &
seals.Neopreneand Kalrezareavailableuponrequest,forusewithcorrosivegases.
1.2 Specifications1.2 Specifications
1.2 Specifications1.2 Specifications
1.2 Specifications
•ResponseTime .......................................................... (to 98% of0-100%step change)Lessthan 2 seconds
•Accuracy & Linearity.................................................................................................................±1% (F.S.)
•Repeatability .......................................................................................................................... ±0.2% (F.S.)
•Std.PressureRating ......................................................................................................................500psig
•HighPressure Option ....................................................................... 1000 psig (prooftestedto1500psig)
•PressureCoefficient........................................................................................... (0-500psigN2)0.01%/psi
•Leak Integrity................................................................................................................................10-9 sccs
•TemperatureCoefficient of Span........................................................................................... <0.1% per oC
•Power ........................................................................................................................ ±15VDC @ ±50mA
•Flow Signal................................................................................................. 0-5.00VDC(inherentlylinear)
• WettedMaterial ............................................................................ 316SS,VitonSeals,Gold/ Nickle Braze
•Connector ................................................................................................................... 15 pinDconnector
•FittingsHFM-229, ............................................................................................................1/4"SwagelokTM
HFM-230,1/2" Swagelok TM
•Weight(approx)HFM-229,............................................................................................................. 1.8 lbs.
HFM-230, 3.3 lbs.

126B - PAGE 6
1.31.3
1.31.3
1.3 AccessorAccessor
AccessorAccessor
Accessoriesies
iesies
ies
1.3.1 P1.3.1 P
1.3.1 P1.3.1 P
1.3.1 Poo
oo
oww
ww
wer Supplieser Supplies
er Supplieser Supplies
er Supplies
Hastings’PowerSupplies are designedascombinationpowersuppliesanddigitalreadoutmonitors.
TheycansimultaneouslypoweracombinationofdifferentHastingsFlowInstruments.The front panel
(9.47"H X 3.47"W) allows mounting of two units in a standard 19" rack.A terminal strip on the rear
panelprovidesthe user with continuous analog outputs from all channels.Allpower supplies havea 3-1/
2LCDdisplay.
Models200and400PowerSuppliescanaccommodateuptotwoorfourHastingsFlow Instruments,
respectively,andtheModel40isforuse with flowmeters only,powering up to 4simultaneously.The
Model40alsofeaturesuser-adjustablegas conversionfactorsfordirectreading when changing
gases.For more information,request Product Bulletin No.544.
1.3.21.3.2
1.3.21.3.2
1.3.2 AlarAlar
AlarAlar
Alarmsms
msms
ms
TheModelAL-1 FlowAlarm is availableasanattachmentsuitableforusewithany 0-5.00VDCinput
signal.Calibrateddigitaldialprecisionpotsdeterminethelowandhighsetpointsasapercentoffull
scale.This permitsusewithanyrangeflowmeteror otherinstrumenthavinga0-5.00VDClinear
outputsignal.Control action is within 0.2% of scale.TheAL-1is available in the panelmountJ
package.
1.3.31.3.3
1.3.31.3.3
1.3.3 TT
TT
Totalizerotalizer
otalizerotalizer
otalizer
TheHastingsTR-1FlowTotalizer integrates the 0-5.00VDCsignalgenerated bytheflowmetertogive
atotalflowreading.Countratesfrom0-999countsperminuteareselectablebyinternalsetting.The
TR-1isavailableinthepanelmountJpackage.
1.3.4 4-20 mA Current Converter1.3.4 4-20 mA Current Converter
1.3.4 4-20 mA Current Converter1.3.4 4-20 mA Current Converter
1.3.4 4-20 mA Current Converter
TheHastingsModelCC-420SeriesCurrentConverterisanoptionavailablewithHastingsMass
Flowmeters.TheCC-420producesa4-20mAsignalfrom the 0-5.00VDC output of the flowmeter.
TheCC-420isavailableinthe panel mount J package.

126B - PAGE 7
2.0 INSTALLATION AND OPERATION
Thissectionisdesignedtoassistingettinganewflowmeterinto operation as quickly and easily as
possible.Pleasereadthefollowingthoroughlybeforeattemptingtoinstall the instrument.
2.1 Receiving Inspection:2.1 Receiving Inspection:
2.1 Receiving Inspection:2.1 Receiving Inspection:
2.1 Receiving Inspection:
CarefullyunpacktheHastingsFlowmeterandanyaccessoriesthatarrivewithit.Inspect it for any
obvioussignsofdamageduetoshipment.Immediatelyadvisethecarrierwhodeliveredtheshipmentif
anydamageissuspected.
Compareeachcomponentshippedagainstthepackinglist. Ensurethatallpartsarepresent(i.e.
flowmeter,powersupply,cables,etc.).Optional equipment or accessorieswillbelistedseparatelyonthe
packing list (see Section 1.4 -Accessories).There may also be one or more OPT- options on the
packinglist.These normally refer to special ranges or specialgas calibrations.They mayalsorefer to
specialheliumleaktestsorhighpressuretests,orspecialmodificationssuchashigh
temperatureorspecialO-ringmaterials.Inmostcasesthesearenotseparate parts, but rather special
optionsormodificationsbuilt intotheflowmeterorpowersupply.
2.2 P2.2 P
2.2 P2.2 P
2.2 Poo
oo
oww
ww
wer Requirements:er Requirements:
er Requirements:er Requirements:
er Requirements:
All HFM Model Flowmeters require ±15VDC @ ±50 mA max .The 15VDC can vary between 14.25
VDCand15.75VDC.The supply voltageshouldbe regulatedwith no more than 50mV ripple.Surge
suppressersarerecommendedtopreventpowerlinespikesfromfeedingthroughto the instruments.
ThesepowerrequirementsaresatisfiedbytheHastingsPowerSupplydescribedinSection1.4-
Accessories.
2.3 Output2.3 Output
2.3 Output2.3 Output
2.3 Output VV
VV
Voltage:oltage:
oltage:oltage:
oltage:
Theoutput of the flowmeterisa 0-5.00VDCsignal proportional to the flowrate.The outputis sent to
the display and is available at terminals at the rear ofthe Hastings Power Supply. If a Hastings supply
isnot being used, the output is available on pin 6 of the D connector. It is recommended that the load
resistancebe no less than 2kOhms.
2.4 Mechanical Connections:2.4 Mechanical Connections:
2.4 Mechanical Connections:2.4 Mechanical Connections:
2.4 Mechanical Connections:
Thetransducer may be oriented in any position, as long asthe direction ofgas flow throughthe
transducerfollowsthe arrowmarkedonthebottomofthelabel.Thepreferred orientationiswiththe
inletandoutletfittingsinahorizontalplanewiththeconnectorpointingup.
Thesmallestpassageway encounteredontheHastingsHFMFlowmeteris.012"ID,therefore steps
shouldbetakentoensureproperfilteringthat
preventsblockageofthesepassageways.
Thereare two 8-32 threadedholes 1/4" deep in
the bottom of the transducer that can be used to
secureittoamountingbracket,ifdesired.
Thestandardinletandoutletfittingsforthe
HFM-229Flowmeterare1/4"Swagelok.Forthe
HFM-230,thefittingsare1/2"
Swagelok.OptionalVCRandVCOfittingsare
available fromthefactory.VitonO-ringsare
standardwithallfittings;Kalrez and
NeopreneO-ringsareoptionalandcanbe
ordered from the factory. Fig.2.1Fig.2.1
Fig.2.1Fig.2.1
Fig.2.1

126B - PAGE 8
Thestandardinletand outlet fittings for the HFM-229BFlowmeterare NPT thread in the sizeofthe
pipelisted on the drawing onpage 22, for sizesup to 3" laminar.On the 4", 6",and 8" laminars, flange
fittingsarestandard.Smoothtubulationisoptionalonallsizes.
Itissuggestedthatallconnectionsbecheckedforleaksafterinstallation.This can be done bypressuriz-
ingthetransducer(donotexceed500psigunlessthe transducer is specifically rated for higher pres-
sures)andapplyingadilutedsoapsolutiontotheflow connections.
2.5 Electrical Connections:2.5 Electrical Connections:
2.5 Electrical Connections:2.5 Electrical Connections:
2.5 Electrical Connections:
Ifapowersupplywaspurchasedfrom Hastings Instruments, installationwillconsistofconnectingthe
cable,purchased separately from the power supply,from the rear of the supply to the top of the
flowmeter.IfaHastingssupplywasnotpurchased,followtheinstructionsbelowto connect up the
flowmeter.
Thepowersupplyusedmustbe capable of supplying ±15VDC at ±50mA . These voltages mustbe
referencedtoacommonground.
Refer to Fig. 2.1. Connect -15VDC to pin 9 and +15VDC to pin 11. Pin 5 is common and must be
connectedtothecommon connectionatthepower supply. Pin 7 is the case ground and it should be
connectedtothecable shield if available,andtoAC ground of the power supply.Pin 6 is the output
signalfromtheflowmeter.Thisoutputwill be 0-5VDC,5VDCbeing100%ofratedorfullflow.
2.6 Operation:2.6 Operation:
2.6 Operation:2.6 Operation:
2.6 Operation:
2.6.1 P2.6.1 P
2.6.1 P2.6.1 P
2.6.1 Poo
oo
oww
ww
wer Supply Operaer Supply Opera
er Supply Operaer Supply Opera
er Supply Operationtion
tiontion
tion
Donotconnecttransducers while the powersupply is energized.Thedisplaymay read either percentof
fullscaleoractualflowrate,dependingonthepower supplypurchased. To readflow rate,turn display
switchtodesiredchannel.
2.6.22.6.2
2.6.22.6.2
2.6.2 AmbientAmbient
AmbientAmbient
Ambient TT
TT
Temperaempera
emperaempera
emperatureture
tureture
ture
Inordertomaintaintheaccuracy of the flowmeterwithchangesinambienttemperature,itisnecessary
tokeepthetemperatureofthetransducer between 0oC and 50oC. Since some of the temperature shift
resultsina slight zero offset, better resultsareobtained if the flowmeter is re-zeroedatthe operating
temperature.Theflowmetercalibrationmay change by a factor up to 0.1%/oC.Hastings Mass
Flowmeters are for GAS flow,so DO NOT let thetemperatureand/or pressure of the gas
reachapointthatwouldcause the gas to change to a liquid state, orerroneousindicationswillresult.
2.6.3 Zero Check2.6.3 Zero Check
2.6.3 Zero Check2.6.3 Zero Check
2.6.3 Zero Check
Turn thepowersupply“ON”.Allow the flowmeter10minutestowarm up.Stop all flowthroughthe
transducerandcheck electricalzero.
CAUTION: Do not assume that all metering valves will completely shut off flow.Even a slight leakage
througha valve will cause an indication on the meter which will falsely appear to bea zero shift.
Ifnecessary,adjust the“ZERO”potentiometer,locatedonthelowerinletsideofthetransducer,until
themeterindicateszero.This zeroshouldbecheckedperiodically duringnormaloperation.
2.7 Range Changing:2.7 Range Changing:
2.7 Range Changing:2.7 Range Changing:
2.7 Range Changing:
Therangeoftheflowmetercanbechangedinthefieldifrecalibrationfacilitiesareavailable.The
instructions to change the flow range can be found in Section 4.5. In order to change the range of a
ModelHFM-230Flowmeter,anewlaminarflowelementmustbepurchasedfromthefactory.

126B - PAGE 9
3.0 THEORY OF OPERATION
Thissectioncontainsan overallfunctionaldescription
ofModelHFMFlowmeters.Detailedschematics and
partslists can be found at the end of the manual in
Section6.0. Inthissectionandothersections
throughoutthismanual,whenapowersupplyis
mentioned,itisassumedthatthecustomerhasa
HastingsPowerSupply. Thesesectionsarenot
applicableifanothertypeofpowersupplyisused.
3.1 Overall Functional Description3.1 Overall Functional Description
3.1 Overall Functional Description3.1 Overall Functional Description
3.1 Overall Functional Description
TheHFMFlowmeterconsistsofasensor,electronic
circuitry,and a shunt.Thesensormeasurestheflow
rate from 0 to 10 sccm of the gas to be metered.The
shuntdividestheflowsuchthattheflowthroughthe
sensoris a precise percentage of the flowthrough the
shunt.The flowthrough the sensor and the shunt is
alwayslaminar.The circuit boardamplifiesthesensor
outputto 5.00VDCandsends it to the powersupply
todisplay. All ofthesecomponentsworkingtogether
resultinafast,stable flowmeter.
3.2 Sensor3.2 Sensor
3.2 Sensor3.2 Sensor
3.2 Sensor
TheHastingsModelHFMMassFlowmeteroperatesonauniquethermalelectricprinciple
whereby ametallic capillarytube is heateduniformly byaresistancewindingattachedtothemid-
pointofthecapillary(seeFigure3.1).ThermocouplesTC-1 andTC-2 are weldedat equal distances
fromthemid-pointanddevelopequaloutputsatzero flow.
Whenflow occurs through thetubing, heat is transferredfrom the tube to the gas onthe inlet side, and
fromthegasbackto thetubeontheoutletsidecreatingan asymmetrical temperature distribution (see
Figure3.2).Thethermocouples sense this decrease and increase in the capillarytubetemperature,and
produceamillivoltoutputsignalproportionaltothatchange.
Fig.3.1Fig.3.1
Fig.3.1Fig.3.1
Fig.3.1
Fig.3.3Fig.3.3
Fig.3.3Fig.3.3
Fig.3.3
Fig.3.2Fig.3.2
Fig.3.2Fig.3.2
Fig.3.2

126B - PAGE 10
Foraconstantpowerinput,thedifferentialthermocoupleoutputisafunctionofthemassflowrateand
the heat capacity of the gas. Since the heat capacity of many gases is relatively constant over wide
rangesoftemperatureandpressure,the flowmeter may be calibrated directly in massunitsforthose
gases. Changesingascompositionusuallyonlyrequireapplicationofasimplemultipliertotheair
calibrationtoaccountforthedifferenceinheatcapacity,and thus the flowmeter is capable of
measuring a wide variety of gases.
3.3 Electronics3.3 Electronics
3.3 Electronics3.3 Electronics
3.3 Electronics
TheFastResponseModelHFMusesathermalflowsensortomeasureflowthroughacapillary tube,
whichisafixedpercentageofthetotalflowthroughtheinstrument.This sensor developsanoutput
signalproportionaltoflowwhichisapproximately0.8mvfullscalemagnitude(seeFigure3.3). This
signal is amplified by the meter circuitry until it is 0-5.00VDC.This 5 volt output is sent back to the
power supplyandtotheflowmetercircuitry,ifapplicable.Atthe powersupplythe5volt output is sent
to the terminals on the back and to the decoding circuitry in the display which converts it to a 3-1/2
digitoutput.
TheFastResponseModelHFMusesadditionalelectronicstoachievefastresponse characteristics by
amplifyingtherateofchangeoftheinputsignal,andaddingittotheamplifiedinputsignal.The elec-
tronicsare adjusted to provideresponse times of less than two secondsto 98% of a0-100% step change
withlessthan2%overshoot.Theelectronicsalsomaintain the ouput signal above 5.00VDCwhenthe
flowrateexceedsthefullscaleflowoftheflowmeter.
NONO
NONO
NOTE:TE:
TE:TE:
TE: The output signal will continue to increase above 5.00VDC as the flow rate exceeds full scale flow,
however,the output above 5.00VDC is non-linear and should not be used for flow measurement.
3.4 Shunt3.4 Shunt
3.4 Shunt3.4 Shunt
3.4 Shunt
Highermeasurementofflowratesisachievedbydividing the flow with a fixed ratio shunting arrange-
ment,asisillustratedinFigure3.4.Thisisaccomplishedbyplacingthemeasuringcapillarytubeparallel
withoneormoredimensionallysimilarchannels,calledalaminarflowelement(LFE).Therefore,the
sensoronly needs to heatthegas passing through the capillarytuberesulting in lowpowerrequire-
ments,whileretainingallthemass measuring characteristics.
TheHFM-229hastwopossible shunts.Thelow range shuntconsistsoftubesinsertedintoacylindrical
base.This shunt is adjustable for ranges from0-10 sccm to 0-250 sccm (see Figure 3.5).The higher
rangeshuntconsistsofacorrugated stainless steel ribbonwoundintoacoilandfused.Thehigherrange
shuntisadjustablefrom0-0.3slpmto0-30 slpm ranges(Figure 3.6).
Fig.3.5Fig.3.5
Fig.3.5Fig.3.5
Fig.3.5 Fig.3.6Fig.3.6
Fig.3.6Fig.3.6
Fig.3.6
Fig.3.4Fig.3.4
Fig.3.4Fig.3.4
Fig.3.4

126B - PAGE 11
TheHFM-230 uses a shuntwhich is acorrugatedandfusedshuntsimilartotheshuntusedinthe
lower flowrangeinstruments(seeFigure3.7).This highest rangeshuntisadjustablefrom0-50slpm
to0-500 slpm.
TheHFM-229BSeriesusesanexternallaminarflowelementinsteadofaninternalshunt,becausethe
necessarysize for the elementexceeds the body size ofthe flowmeter.Thislaminarflowelementis
madeofacorrugatedand fused stainless steel ribbon similar to theoneusedinthe
ModelHFM-230.
Fig.3.7Fig.3.7
Fig.3.7Fig.3.7
Fig.3.7

126B - PAGE 12

126B - PAGE 13
4.0 MAINTENANCE
4.1 Introduction:4.1 Introduction:
4.1 Introduction:4.1 Introduction:
4.1 Introduction:
Thissectioncontainsserviceandcalibrationinformation.Someportions of the instrumentaredelicate.
Useextremecarewhenservicingtheflowmeter.Thepotentiometerpositionsandtheelectrical compo-
nentsreferredtointhetroubleshootingsection canbefoundinSection6.0ontheelectricalcomponent
layoutdrawing.
4.24.2
4.24.2
4.2 AuthorAuthor
AuthorAuthor
Authorized Maintenance:ized Maintenance:
ized Maintenance:ized Maintenance:
ized Maintenance:
Withpropercareininstallationanduse,theflowmeterwillrequirelittleor no maintenance. If mainte-
nancedoesbecomenecessary,mostoftheinstrumentcanbecleanedor repaired in the field.Some
proceduresmayrequirerecalibration.Donotattempt these procedures unlessfacilitiesareavailable.
Entryintothe sensor or tampering with theprinted circuit board will voidwarranty.Donotperform
repairsontheseassemblieswhileunitisstillunderwarranty.
4.34.3
4.34.3
4.3 Adjustments:Adjustments:
Adjustments:Adjustments:
Adjustments:
4.3.1 Calibration Procedure4.3.1 Calibration Procedure
4.3.1 Calibration Procedure4.3.1 Calibration Procedure
4.3.1 Calibration Procedure
1.1.
1.1.
1. Connect power cable to D connector as specified in Section 2.5.Allow instrument to warm up for
30minuteswithallflowshutoff.
2.2.
2.2.
2. Set ZERO potentiometer for 0.000VDC output at pin 6 on the D connector or flow output pin on
the rear of the Hastings Power Supply.
3.3.
3.3.
3. Turn on air supply to inlet of instrument.Adjust flow rate to 100% according to flow reference.
4.4.
4.4.
4. Adjust SPAN pot until the flowmeter
indicatesfullscaleflow (5.000VDC).
NOTE:Perform this step only if a
calibratedreferenceflowmeterisavail-
able.
5.5.
5.5.
5. Record flowmeter and flow reference
outputsforflowratesof20%,40%,60%,
80%,and100%.
4.3.2 Response4.3.2 Response
4.3.2 Response4.3.2 Response
4.3.2 Response TimeTime
TimeTime
Time AdjustmentsAdjustments
AdjustmentsAdjustments
Adjustments
Readjustmentsofthefastresponse
circuitshouldnotbenecessaryunless
changes in the range or sensor have
beenperformed.The flowmetershould
becalibratedbeforesettingtheresponse
time.
IMPORTANT: Response timecannot
betestedwithasimpleshutoffvalve.
Pressurebuildsupbehindthevalve,andwhenopenedcreatesasurgeflowinexcessofthecalibratedflowrate.
Whatmustbeusedisatwo-wayvalveorafittingwhichcanbequicklyconnectedandprovidealeak-freesealto
theflowmeterinlet.Thereferenceflowisventedtoatmosphere,andswitchesthroughtheflowmeterwhenthe
valveisoperatedorfittingisconnected.Thevalveorfittingshouldbeclosecoupledtotheflowmeterinletto
reducepneumatictimedelays.Theresponsepotisnotaccessiblefromtheexterioroftheflowmeter.Thecover
mustberemovedtomakeanyadjustments.SeeFig. 4.1.
Usingavoltmeter,stripchartrecorder,oroscilloscopeconnectedtotheflowoutputvoltage,switchflowthrough
theflowmeterandobserveoutputvoltage.Adjustresponsepottoincreaseordecreaseresponsetime.The
responsepotisasingleturnpotandasmallpotadjustmentproducesalargeresponsetimechange.Removeflow
fromflowmeterandallowoutputvoltagetoreachzerovolts.Repeattestuntilresponsetimeisset.
4.3.34.3.3
4.3.34.3.3
4.3.3 MiscellaneousMiscellaneous
MiscellaneousMiscellaneous
Miscellaneous AdjustmentsAdjustments
AdjustmentsAdjustments
Adjustments
Periodically,duringnormaloperation,theZERO shouldbecheckedandadjustedwhenrequired.
Fig.4.1Fig.4.1
Fig.4.1Fig.4.1
Fig.4.1

126B - PAGE 14
4.4 End Cap Removal4.4 End Cap Removal
4.4 End Cap Removal4.4 End Cap Removal
4.4 End Cap Removal
The end cap on the inlet side must be removed to gain access to the filter or shunt assembly.First shut
offthesupplyofgastotheinstrument. Disconnect the Swagelok fitting on the inlet and outlet sidesof
theinstrument.Removethefourhex bolts holding the end cap to the instrument (seeFigure4.2).
Carefullyremovetheendcap,filter,wavespringandshunt,notingtheirorderandproperorientation.
NOTE: The Model HFM-230 does not include a wave spring.The shunt can be severely damagedif
dropped.Examinethefilterandshunt.Ifeitherisdirtyorblocked,cleanorreplaceasapplicable.
Reassemblyis the reverse of the removal procedure.
NOTE:When reinstalling the small range shunt,ensure that corrugated side is down.
4.5 Range Changes4.5 Range Changes
4.5 Range Changes4.5 Range Changes
4.5 Range Changes
Remove end cap and shunt assembly per Section 4.4 above.The 0-10 sccm to 0-300 sccm range
shunthastubes,while the medium range shunt is builtfromacoilofcorrugatedstainlesssteelfoil.The
mediumrangeshunthasadisk assembly with twolarge,one medium,and one small hole.To change
ranges,thediscontheinlet of the shunt should be loosened, turned andretightenedtoexposethe
number of holes or tubes as listed below for the range desired.
SIZESIZE
SIZESIZE
SIZE RANGERANGE
RANGERANGE
RANGE SHUNT SETUPSHUNT SETUP
SHUNT SETUPSHUNT SETUP
SHUNT SETUP
SMALL .......................................... 0-10sccm...............................................................................0tubes
........................................................ 0-30sccm................................................................................ 1 tube
........................................................ 0-50sccm...............................................................................2tubes
........................................................ 0-100sccm.............................................................................4 tubes
........................................................ 0-250sccm...........................................................................10 tubes
MEDIUM....................................... 0-.3slpm ...................................................................... smallest hole
........................................................ 0-1slpm ........................................................................mediumhole
........................................................ 0-3slpm .......................................................... 1 large and small hole
........................................................ 0-5slpm ................................................................... bothlargeholes
........................................................ 0-10slpm ........................................................................ half-washer
........................................................ 0-30slpm .................................................................washerremoved
LARGE........................................... 0-50slpm ................................................................................ 1 hole
........................................................ 0-100slpm ............................................................................. 2holes
........................................................ 0-150............................................................................... slpm3holes
........................................................ 0-300................................................................ slpmwasherremoved
........................................................ 0-500............................................................... slpm washerremoved
NONO
NONO
NOTETE
TETE
TE: These ranges are forAir at StandardTemperature and Pressure.
Fig.4.2Fig.4.2
Fig.4.2Fig.4.2
Fig.4.2

126B - PAGE 15
4.6 Printed Circuit Board4.6 Printed Circuit Board
4.6 Printed Circuit Board4.6 Printed Circuit Board
4.6 Printed Circuit Board
ReplacementReplacement
ReplacementReplacement
Replacement
In the unlikely event that the PC board
fails,itiseasilyremovedfrom the instru-
mentandreplacedwithasparetominimize
instrumentdowntime.Replacementofthe
PCboardwillrequiretheinstrumenttobe
recalibratedperSection4.3.1.Unplugthe
powercablefromthetopofthetransducer.
Remove the two screws on the side of the
cover. Lift off the cover and unplug the
four-wiresensorplugnotingtheorientation
prior to removal. Remove the screw that
holdsthe PC board to the sensor.Trouble-
shootorreplaceasapplicable. Installationis
the reverse of the above procedure.
Recalibrateifanycomponentswere
changedorifanypotentiometerswere
adjusted.
4.7 Sensor Replacement4.7 Sensor Replacement
4.7 Sensor Replacement4.7 Sensor Replacement
4.7 Sensor Replacement
If the sensor fails or becomes plugged it can be removed. Remove the cover and the PC board per
Section4.6 above. Removethe three bolts holding the sensor to the instrument base. Removethe
sensorfromthe base noting thetwoO-rings(Parker2-005,V884-75)betweenthesensorandthebase.
See Figure4.3.If the sensor is plugged it can be cleaned by running a fine wire (approximately 0.008"
diameter)throughthetube.Ifsensorneedsreplacement,obtainanotherfromthefactoryandinstallit.
EnsurethatO-ringsarecleanandintact. InstallO-ringsonseatingsurface,thencarefullyplacesensor
over O-rings,andtightendownthethreescrewsevenly.Replacementofsensorwillrequirerecalibration
per Section 4.3.1.
4.84.8
4.84.8
4.8 TT
TT
Troubleshootingroubleshooting
roubleshootingroubleshooting
roubleshooting
SYMPTSYMPT
SYMPTSYMPT
SYMPTOM:OM:
OM:OM:
OM: Output reads 40% of flow with no flow. Zero pot has no effect.
CACA
CACA
CAUSE:USE:
USE:USE:
USE: Power supply locked up or shorted out.
AA
AA
ACTION:CTION:
CTION:CTION:
CTION: Turn off power supply for a few seconds,then turn back on.If this proves ineffective,
disconnectthe unit from thepowersupply.Ifpower supply display does not return to zero,thena
regulatorchipinthepowersupplyisprobablyburnedout.
Checksupplyvoltagesandreplacefaultyregulator.Ifdisplay
returnstozeroafterdisconnectingthepowersupplyfromthe
unit thereis a shortin the unitto ground. Checkcapacitors C11
& C13 first.
SYMPTOM:SYMPTOM:
SYMPTOM:SYMPTOM:
SYMPTOM: Output of unit is proportional to flow but
extremelysmalland not correctable by spanpot.
CAUSE:CAUSE:
CAUSE:CAUSE:
CAUSE: Sensor is not being heated.
AA
AA
ACTION:CTION:
CTION:CTION:
CTION: UnplugsensorfromPCboard(Fig.4.3). Pinsonsensorare
numberedfromlefttoright.Begincountingwithsecondpinfromleft(seeFig.
4.4).Checktheresistancebetweenpins2&3ofthesensor. Thiswillreadbetween
2450&2550.Checktheresistancebetweenpins1&4ofthesensor.Thisshould
readapproximately2.3ohms.Ifthisreadsopencircuit,sensorwasprobably
pluggedintoPCboardimproperlyandoneofthethermocoupleshasbeen
destroyed.Replacesensor.Checktheresistancebetweenpin2andthebaseofthe
sensor.Thisshouldbeanopencircuit.Repeatforpin3andthebase.Ifresistance
readingsarecorrectbutsensorisnotindicatingflow,thesensorisprobablyplugged;
cleanorreplaceasapplicable.
Fig.4.3Fig.4.3
Fig.4.3Fig.4.3
Fig.4.3
Fig.4.4Fig.4.4
Fig.4.4Fig.4.4
Fig.4.4

126B - PAGE 16
SYMPTOM:SYMPTOM:
SYMPTOM:SYMPTOM:
SYMPTOM: Sensor has proper resistance readings, but little or no output with flow.
CAUSE:CAUSE:
CAUSE:CAUSE:
CAUSE: Plugged sensor.
AA
AA
ACTION:CTION:
CTION:CTION:
CTION: Shut off gas supply and power supply. Remove cover and PC board from unit.Remove
sensorassemblyandexamine.Ifsensorhasevidenceofplugging,cleanorreplaceasapplicable.
SYMPTSYMPT
SYMPTSYMPT
SYMPTOM:OM:
OM:OM:
OM: Flowmeter reads other than 0.00VDC with no flow, or there is a small flow when
flowmeterreads0.00VDC.
CACA
CACA
CAUSE:USE:
USE:USE:
USE: ZERO potentiometer is out of adjustment.
AA
AA
ACTION:CTION:
CTION:CTION:
CTION: Shut off all flow.Adjust ZERO potentiometer until output reads 0.00VDC.
SYMPTOM:SYMPTOM:
SYMPTOM:SYMPTOM:
SYMPTOM: Flowmeter out of calibration and non-linear.
CAUSE:CAUSE:
CAUSE:CAUSE:
CAUSE: Leaks in gas inlet or outlet fittings.
AA
AA
ACTION:CTION:
CTION:CTION:
CTION: Check all fittings for leaks by placing soap solution on all fittings between gas supply and
finaldestinationofgas.Checkflowmeterforleaks.Replace“O”ringsifrequiredorrecalibrateas
necessary.

126B - PAGE 17
5.0 REPLACEMENT PARTS
Thefollowingisalistoftheavailablereplacementpartsandtheirfactory stock numbers.The HFM-
229,HFM-229B,HFM-200, HFM-200B,andtheHFC-202shuntsandfilter discs are interchange-
able.TheHFM-230,HFM-201,and the HFC-203 shunts and filter discs are also interchangeable.The
same sensor module is used on all of the above models.
STST
STST
STOCK NOOCK NO
OCK NOOCK NO
OCK NO..
..
.DESCRIPTIONDESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION AIR RANGEAIR RANGE
AIR RANGEAIR RANGE
AIR RANGE
81-102L......... LOWRANGESHUNT.....................................................10, 30, 50, 100, 250 SCCM
81-102H ........ MEDRANGESHUNT ....................................................... 0.3, 1, 3, 5, 10, 30 SLPM
81-102B......... HIGH RANGE SHUNT ............................................... 50, 100, 150, 300, 500SLPM
65-140E......... LFE Model LS-2, 2.0" NPTM ................................................................. 0-750 SLPM
65-140G ........ LFE Model LS-3, 3.0" NPTM ............................................................... 0-1500SLPM
65-140J .......... LFE Model LS-4F, 4.0" Flange............................................................... 0-3000SLPM
65-140K ........ LFE Model LS-6F, 6.0" Flange............................................................... 0-6000SLPM
65-140L......... LFE Model LS-8F, 8.0" Flange............................................................ 0-15,000 SLPM
39-02-003...... SMALL FILTER DISC ................................................. HFM-229,HFM-229B,AND
HFC-202
39-02-002...... LARGE FILTER DISC ...................................................... HFM-230ANDHFC-203
81-105 ........... SENSOR MODULE ...........................................................................ALL MODELS
65-595 ........... FAST RESPONSE HFMELECTRONICSCARD ...................... DCONNECTOR
81-115 .....................................................................VITON O-RING KIT FOR HFM-200 and 200B
81-116 .....................................................................................VITON O-RING KITFOR HFM-201
81-146 .............................................................. KALREZTM O-RINGKITFORHFM-200and200B
81-147 .............................................................................. KALREZTM O-RINGKITFORHFM-201
81-150 ............................................................ NEOPRENE O-RING KIT FOR HFM-200 and 200B
81-151 ............................................................................ NEOPRENE O-RING KIT FOR HFM-201
NONO
NONO
NOTETE
TETE
TE: Ranges listed are for same standard temperature and pressure.
To placeanorderortoobtaininformation concerningreplacementparts,contactthefactory or our
localmanufacturer’s representativeinyour area.See below,or this manual’s last pagefor the address or
phonenumber.When ordering,includethefollowinginformation:
•Instrumentmodelnumber
•Partdescription
•Hastingspartnumber

126B - PAGE 18

126B - PAGE 19
WW
WW
Warar
arar
arranty Pranty P
ranty Pranty P
ranty Policolic
olicolic
olicyy
yy
y
HastingsInstrumentswarrantsthisproduct for a period of one year fromthedateofshipment to
befreefromdefectsinmaterial and workmanship.Thiswarranty does not apply to defects or
failuresresultingfromunauthorizedmodification,misuseormishandlingoftheproduct.This
warrantydoesnotapplyto batteries or other expendable parts, nortodamagecausedby leaking
batteriesoranysimilaroccurrence.This warranty does not apply to anyinstrumentwhichhas had
a tamper seal removed or broken.
Thiswarrantyisinlieuofallotherwarranties,expressed or implied, including anyimpliedwarranty
astofitnessforaparticular use. Hastings Instruments shall not be liableforanyindirectorconse-
quentialdamages.
HastingsInstrumentswill,atitsoption,repair,replaceorrefundthesellingpriceoftheproductif
HastingsInstrumentsdetermines,ingoodfaith,thatitis defective in materials orworkmanship
duringthewarrantyperiod.Defectiveinstrumentsshouldbereturned to Hastings Instruments
togetherwithawrittenstatementoftheproblemandaReturnMaterialAuthorization(RMA)
number.Pleaseconsultthe factoryforyourRMAnumberbeforereturninganyproductforrepair.
Non-WNon-W
Non-WNon-W
Non-Warar
arar
arranty Repair Pranty Repair P
ranty Repair Pranty Repair P
ranty Repair Policolic
olicolic
olicyy
yy
y
Anyproductreturnedforanon-warrantyrepairmustbeaccompaniedbyapurchaseorder,RMA
formandawrittendescriptionoftheproblemwith the instrument. If the repair cost is higher, you
willbecontactedforauthorizationbefore we proceed with any repairs. If youthenchoosenotto
havetheproductrepaired,aminimumwillbechargedtocovertheprocessingandinspection.
Pleaseconsultthe factory foryourRMAnumberbefore returning anyproductforrepair.
TELEDYNE HASTINGS
804NEWCOMBEAVENUE
HAMPTON,VIRGINIA 23669 U.S.A.
ATTENTION: REPAIRDEPARTMENT
TELEPHONE [phone]
1-800-950-2468
FAX [phone]
6.0Warranty and Repair

126B - PAGE 20