NuFlo Barton 202E User manual

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MODEL 202E
DIFFERENTIAL PRESSURE RECORDERS
User Manual
Manual No. 10060, Rev. B
05/2004
CONTENTS
Section 1 - Introduction ................................................................. Page 1
Pressure Elements/Chart Drive Tables ..................................... Page 5/6
Section - Installation/Calibration Check ................................... Page 7
Section 3 - Maintenance & Calibration ........................................ Page 13
Section 4 - Troubleshooting ........................................................... Page 6
Section 5 - Installation Drawings .................................................. Page 8
Section 6 - Parts Drawing/List ....................................................... Page 34
Specification (DPU/Instrument)................................................... Page 39
SECTION 1 - INTRODUCTION
General
The Barton® Model 202E single DP Flow Recorders measure and record system
operation parameters including gas and liquid flow rate liquid level in a vessel
and other system variables that can be measured by differential pressure and
static pressure methods.
Main Components
Differential Pressure Unit
The Barton® Model 199 Differential Pressure Unit (DPU) actuates the recorders.
The DPU is a dual bellows assembly enclosed within pressure housings. The
bellows are liquid filled and withstand overranges equal to the working pressure
of the housing without calibration change. Movement of the bellows is transmit-
ted through a torque tube from the DPU to the recording mechanism. The
torque tube is hermetically sealed to eliminate friction and leakage; it does not
require lubrication.
Before installing this instrument become familiar with the installation instructions
in Section 2. WARNING notes that appear on the following pages of this manual
should be reviewed before proceeding: 8 20 21 22 and 25.
SAFETY !
WARNING notes indicate the presence of a hazard which can cause severe personal injury, death, or substantial
property damage if warning is ignored
CAUTION notes indicate the presence of a hazard which can cause moderate personal injury or property
damage if warning is ignored

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CHECKTHESTATICCALIBRATION
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2ELEASEPRESSURE3ETTHEPENTOZEROUSINGTHEZEROADJUSTMENTSCREW
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PRESSUREINDICATION
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ONTHECHART
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FURTHERADJUSTMENTSARENECESSARYPERFORMTHECALIBRATIONPROCEDURE
OUTLINEDIN300EN#ALIBRATIONONPAGE


2ECORDER-OUNTING
.OTES
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  0IPE-OUNTING
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lTTEDWITHAINCH.04OUTLET
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0IPING
#ONNECTTHEPRESSUREELEMENTTOSYSTEMPRESSUREUSINGTUBINGORPIPE0RESSURE
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%LECTRICAL#ONNECTIONS
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THECASETOACCOMMODATECONDUITCLAMPINGCONNECTIONSTHROUGHWHICHWIRING
ISFEDTOTHETERMINALSTRIP4HETERMINALSTRIPISBELOWTHECHARTDRIVEMOTOR
4HESTANDARDELECTRICALPOWERSUPPLYREQUIREMENTIS6!#(Z(Z
WIRINGAVAILABLEUPONREQUEST
#HART)NSTALLATION
0ERFORMTHEFOLLOWINGSTEPSTOINSTALLTHECHART
  /PENTHERECORDERDOORANDRELEASETHECHARTLOCKONCHARTDRIVEHUB
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PLATE)NSERTTHECHARTINTHECHARTGUIDESINTHECHARTPLATEANDLOCATETHE
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PENSONTHEDESIREDCHARTTIMELINE
  3ECURETHECHARTINPLACEWITHTHECHARTHUBLOCK
3TARTUP
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PRESSUREDURINGOPERATIONS
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CHECKWITHONLYONEBLOCKVALVECLOSED)FSEALPOTSAREUSEDSOMEOFTHE
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MAYOCCURTHATWILLDISPLACETHEZEROREADING


  0ERFORMAZEROCHECKONTHEINSTRUMENTPERTHEFOLLOWING
 &OR'AS3ERVICE
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CONNECTEDTOTHEPRESSURESOURCE
B 4IGHTENPROCESSCONNECTIONSTOEACH$05HOUSING#HECKMANIFOLD
ANDPIPINGFORLEAKS
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THENSLOWLYOPENONESHUTOFFVALVETOPRESSURIZETHEINSTRUMENT
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4IGHTENASNECESSARY
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GASORLIQUIDENTRAPMENTINTHELINESORINTHE$05DEPENDINGUPON
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PENTOZEROUSINGTHEPENZEROADJUSTMENTSCREW
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TIGHTENCONNECTIONS
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ANDTIGHTENCONNECTIONS
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ADJUSTMENTSCREW
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BEFORETIGHTENINGTHEVENTPLUGS
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ABOVE
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NOWOPERATIONAL
  !DJUSTTHEDAMPENERVALVEASREQUIRED
/PERATION
4OPLACETHEINSTRUMENTINTOOPERATION
  4URNONTHEDRIVE
  6ERIFYTHATTHEPENHASINKANDISINCONTACTWITHCHART
  4URNONPRESSURETOTHERECORDER


$00EN-ECHANISM

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ANDOCCASIONALCALIBRATION)NADDITIONTHEOPERATORSHOULDPERIODICALLYCHECK
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4OCALIBRATETHE$0PEN
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ARECORRECTLYCONNECTEDANDTHATTHEYDONOTINTERFEREWITHONEANOTHER
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BACKTOENSURETHATTHEPENTRAVELSALONGTHETIMELINE)FADJUSTMENTSARE
NEEDEDLOOSENTHETWOPENMOUNTSCREWSADJUSTTHEPENMOUNTPOSITION
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  $ISCONNECTTHEDIFFERENTIALPRESSUREDRIVELINKFROMTHERANGEARM-OVE
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SOTHATPENSAREAPPROXIMATELYMINUTESAPARTBYADJUSTINGTHESTATIC
PENARMMOUNTINGLOCATIONONTHEPENARMSHAFTASSEMBLY-OVEBOTHPENS
TOTHEINDICATINGPOSITION%NSURETHATTHEPENSDONTINTERFEREWITH
ONEANOTHER!DJUSTSTATICPENSASNECESSARYDONOTALTERTHEDIFFERENTIAL
PRESSUREPENONCEITHASBEENADJUSTEDTOTHETIMELINE
  !SSURETHATTHEREISENOUGHPENPRESSUREAGAINSTTHECHARTTOPRODUCEA
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INTHEREQUIREDDIRECTION
  5NLOCKTHEmOWRECORDERHUBCLIP2EMOVETHECHARTANDCHARTPLATE
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ANDGLUINGITTOAPIECEOFSIMILARLYSHAPEDCARDBOARDOFSTIFFENER4HISALLOWS
CALIBRATIONOFTHEPENSANDPERMITSACCESSTOTHEmOWRECORDERMECHANISM
WHENLINKAGEADJUSTMENTSARENECESSARY
  -OUNTACALIBRATIONCHARTONTOTHEmOWRECORDERHUB,OCKTHECHARTIN
PLACE-OVEOVERRANGESTOPSOUTOFPLAY
.OTICE6ERIFYTHATALLLINKAGEISFREE!DJUSTRANGEARMANDDRIVEARM
ATPRECISELYTHESAMEDISTANCEBACKOFTHECASE!DJUSTTHELEVERARMAND
PENZEROADJUSTSCREWSTOTHEIRMIDPOINTSALLMIDSCALELINKAGEANGLES
MUSTBEMEASURED

7. Apply 50% differential pressure to the high-pressure side. Arrange the
differential pressure linkage as shown on page 12. Set a 90° angle etween the
drive arm and link. By varying the length of the link, set a 90° angle etween
the range arm and link. Slip the range arm to 50% on the chart.
8. Remove pressure. The pen should indicate zero. If the pen deviates less than
10% from zero in either direction, perform fine adjustment y using the pen
zero adjust screw (refer to page 12) and proceed to step 8. . If the pen deviates
more than 10% from zero, make adjustments as follows:
a. Rotate pen arm and shaft y gripping the range arm and forcing (or
slipping) the pen until it indicates zero. The pen arm and shaft should
rotate at the range arm pivot point without loosening the range arm lock
screw.
. Apply 100% pressure. Make the necessary adjustment y turning the
range arm adjust screw counterclockwise if the pen is slightly underranged
and clockwise if the pen is slightly overranged. Repeat zero and 100%
adjustments until cali ration at these points is achieved.
c. Apply 50% pressure. The pen should e on the 50% chart line.
If the pen is low, lengthen the linkage to make a correction 40 times as
great in the low direction. Adjust the pen to 50% as in step 8.a. (refer to
page 12).
If the pen is high, shorten the linkage to make a correction 40 times as
great in the high direction. Adjust the pen to 50% as in step 8.a. Assure all
linkage screws are retightened.
9. Repeat step 8 until cali ration of all three points (0, 50, and 100% indication)
is achieved. To assure accuracy, a nine-point cali ration check (1, 24, 50, 74,
and 100% ascending and descending) must e run.
14


 #HECKTHEPENSTOASSURETHATTHEYHAVECORRECTPENPRESSUREASPREVIOUSLY
DESCRIBED)FNECESSARYSTRAIGHTENTHEPENSBYSLIDINGTHEMBETWEENTWO
lNGERSANDCURLINGTHEMINOROUT
!DDING#OUNTERWEIGHTTO0EN$0 2EFERTOPAGE
!&ABRICATED#OUNTERWEIGHT
 &OROR0EN&LOW2ECORDERS
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FROMRANGEARM
2EMOVETHERANGEARMFROMTHESHAFTANDSLIPTHECOUNTERWEIGHTTO
ABOUTMIDPOINT0OSITIONAPPROXIMATELYASSHOWNONPAGEAND
SECUREINPLACE2EPLACETHERANGEARMTOAPPROXIMATEPOSITIONNOTE
STEPANDSECUREINPLACE
2EASSEMBLEINPENMOUNTANDPREPAREFORCALIBRATION
 &OR0EN&LOW2ECORDERS
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3LIPTHECOUNTERWEIGHTOVERTHESHAFTINFRONTOFTHEPENSHAFTLENGTH
ISAPPROXIMATELYANDPOSITIONAPPROXASSHOWNONPAGE
ANDSECUREINPLACE
2EASSEMBLEINPENMOUNTANDPREPAREFORCALIBRATION
"$IE#AST#OUNTERWEIGHT
 4HESECOUNTERWEIGHTSSLIPOVERTHEPENSHAFTWITHOUTDISASSEMBLY4HISIS
APPLICABLETOAPENORPENASSEMBLY
2EMOVELOCKSCREWFROMCOUNTERWEIGHT
3LIPOVERSHAFTATANYCONVENIENTLOCATION2EPLACELOCKSCREWCARE
FULLYORIENTINGTHECOUNTERWEIGHTINTHEPOSITIONSHOWNONPAGE
.OTE4HECOUNTERWEIGHTISDIECASTZINCSUBJECTTOBENDINGIFTOO
MUCHTORQUEISAPPLIEDTOTHELOCKSCREW
#  #ALIBRATION
!FTERREMOVALOFTHERANGEARMCOMPLETERECALIBRATIONISREQUIRED)N
THEPREVIOUSSECTION#!,)"2!4)/./&$)&&%2%.4)!,02%3352%
0%.INCLUDESTEPSETTHECOUNTERWEIGHTTOTHEOCLOCKPOSITION
SHOWNONPAGEWITHTHEDIFFERENTIALSETAT
!FTERTHEADDITIONOFTHECOUNTERWEIGHTINFRONTOFTHE$0PEN
APPLYDIFFERENTIALANDSETTHECOUNTERWEIGHTATTHEOCLOCK
POSITION
4HEADDITIONOFTHECOUNTERWEIGHTCAUSESAZEROOFFSETBUTHAS
LITTLEEFFECTONSPAN2ESETZEROCHECKSPANANDADJUSTASNECESSARY
!FTERADDITIONOFTHEDIECASTCOUNTERWEIGHTORIENTTOOCLOCKPOSITION
ATDIFFERENTIALASSHOWNONPAGE2ESETZEROANDCHECKSPAN
!DJUSTASNECESSARYFORPROPERCALIBRATION


300EN-ECHANISM


3TATIC0RESSURE0EN#ALIBRATION2EFERTOPAGE
4OCALIBRATETHESTATICPRESSUREPENANDASSOCIATEDLINKAGEPROCEEDASFOLLOWS
  !DJUSTTHESTATICRANGEARMANDDRIVEARMATPRECISELYTHESAMEDISTANCE
FROMTHEBACKOFTHECASE
  0LACESTATICDRIVELINKINTHEFOURTHHOLEFROMTHEPENSHAFTOFTHERANGEARM
  !DJUSTSTATICPRESSURELINKAGETOFORMANGLESBETWEENTHEDRIVELINKSEE
ABOVEILLUSTRATIONANDPIVOTPOINTSOFTHEASSOCIATEDLINKAGEASFOLLOWS
A !PPLYSTATICPRESSURECENTERTHUMBNUTONTHEDRIVEARMAND
ARRANGESTATICLINKAGEASSHOWNONPAGE
B 3ETAANGLEBETWEENDRIVEARMLINK4IGHTENCLAMPBLOCKSCREW
C 6ARYTHELENGTHOFLINKTOGETAANGLEBETWEENRANGEARMANDLINK
D 3LIPTHERANGEARMONPENSHAFTTOONCHART
.OTICE6ERIFYTHATALLLINKAGEISFREE!DJUSTRANGEARMANDDRIVEARM
ATPRECISELYTHESAMEDISTANCEBACKOFTHECASE!DJUSTTHELEVERARMAND
PENZEROADJUSTSCREWSTOTHEIRMIDPOINTSALLMIDSCALELINKAGEANGLES
MUSTBEMEASURED
  2ELEASEPRESSUREANDRESETTHEPENTOZEROINDICATIONUSINGPENZEROADJUST
SCREWFORlNEADJUSTMENTORLESS&ORMAJORADJUSTMENTSMORETHAN
LOOSENRANGEARMLOCKSCREWANDSLIPTHEPENTOZEROONCHARTAND
RETIGHTENLOCKSCREW
.OTE)TMAYBENECESSARYTORAISEORLOWERTHEPIVOTPOINTOFTHEDRIVE
LINKONTHERANGEARMASINSTEP)FCOUNTERCLOCKWISEMOVEMENTOFTHUMB
NUTSTEPDOESNOTINCREASESPANSUFlCIENTLYMOVETHEPIVOTPINUPTO
NEXTPIVOTHOLEIFCLOCKWISEMOVEMENTOFTHETHUMBNUTDOESNOTDECREASE
SPANSUFlCIENTLYMOVEPIVOTPINDOWNTOTHENEXTPIVOTHOLE
  !PPLYPRESSUREANDOBSERVETHEPEN-AKETHENECESSARYADJUSTMENTS
BYTURNINGTHEDRIVEARMTHUMBNUTCOUNTERCLOCKWISEIFTHEPENISSLIGHTLY
UNDERRANGEDANDCLOCKWISEIFTHEPENISSLIGHTLYOVERRANGED2EPEATZERO
ANDADJUSTMENTUNTILCALIBRATIONATTHESETWOPOINTSISACHIEVED
  2EPEATSTEPSANDUNTILFULLSCALECALIBRATIONISOBTAINED
  !PPLYPRESSUREANDOBSERVEPENINDICATION
A )FPENINDICATESHIGHORLOWADJUSTDRIVELINKTOMAKEACORRECTION
APPROXIMATELYTIMESTHEERRORINTHEDIRECTIONOFTHEERROR
B 2ESETTHEPENTOTHELINEBYSLIPPINGTHEPENSHAFTATTHERANGE
ARMPIVOTPOINT
C 2EPEATTHISSTEPASNECESSARY
  2ELEASEPRESSUREANDRESETTHEPENTOZEROINDICATIONUSINGPENZEROADJUST
SCREWFORPRECISEADJUSTMENT
  2EPEATSTEPSTHROUGHUNTILCALIBRATIONOFZEROLINEARITYANDSPAN
ANDINDICATIONISACHIEVED
 !SSURERANGEARMLOCKSCREWSTHUMBNUTLOCKSCREWANDLINKSCREWSARETIGHT
 2ECONNECTTHE$0LINKANDRANGEARM
 5NLOCKTHERECORDERHUBCLIPANDREMOVETEMPORARYCALIBRATIONCHART
 2EPLACETHECHARTPLATEBYSLIDINGITINTOTHECHARTPLATERETAINERBRACKETSAND
ENGAGINGEACHSIDEINTOTHECHARTPLATELATCHES


3TATIC0RESSURE%LEMENT2EPLACEMENT
)FTHESTATICPRESSUREELEMENTNEEDSREPLACEMENTPROCEEDASFOLLOWS
  #LOSEALLVALVESANDTURNOFFTHEPOWERSWITCHTOTHERECORDER
  3EPARATETHEDRIVELINKARMBYOPENINGTHELINKTABLEANDDISENGAGINGTHE
PIVOTPINFROMTHECLAMP
  ,OOSENTHECLAMPBLOCKSCREWONTHELEVERARMASSEMBLYANDSEPARATETHE
DRIVEARMFROMTHESTATICPRESSUREELEMENTSHAFT
  $ISCONNECTTHETUBINGFROMTHESTATICPRESSUREELEMENTATTHETUBINGCON
NECTIONREFERTOPAGE
  2EMOVETHEMOUNTINGSCREWSFROMTHESTATICPRESSUREELEMENTANDDISCARD
THEDAMAGEDELEMENT
  )NSTALLTHENEWELEMENTUSINGTHEOLDMOUNTINGSCREWS
  #ONNECTTUBINGTOTHEELEMENTATTHETUBINGCONNECTION
  !SSEMBLETHELEVERARMASSEMBLYONTOTHESTATICPRESSUREELEMENTSHAFTDO
NOTTIGHTENTHECLAMPBLOCKSCREWYET
  #ONNECTTHEDRIVELINKTOTHEDRIVEARMBYENGAGINGTHEPIVOTPINAND
LOCKINGTHELINKTABINTOPLACE
 !LIGNTHESTATICPRESSURELINKAGERANGEARMDRIVELINKANDDRIVEARMSO
THATITLIESINTHESAMEPLANEWITHOUTBINDINGORBENDING
 4IGHTENCLAMPBLOCKSCREW
 #ALIBRATEINACCORDANCEWITHTHEPROCEDUREOUTLINEDIN300EN#ALIBRATION
ONPAGE
#HART$RIVE2EPLACEMENT
4OREPLACETHECHARTDRIVEPROCEEDASFOLLOWS
  2ELEASETHEPRESSURETOTHERECORDER
  4URNOFFTHECHARTDRIVE
  2AISETHEPENLIFTERANDREMOVETHECHARTANDCHARTPLATE
  2EMOVECHARTDRIVEMOUNTINGSCREWSANDREMOVECHARTDRIVE
  0OSITIONNEWCHARTDRIVEATTHEBACKOFRECORDERCASEANDATTACHWITH
MOUNTINGSCREWS
  2EPLACECHARTPLATEANDCHART,OWERTHEPENTOTHERECORDINGPOSITION
  #HECKTHETIMELINEONlRSTPENFROMCHARTZEROANDSPANELEMENTS
,INKAGE!DJUSTMENTSSEELINKAGEILLUSTRATIONONPAGE
!  2ANGE!RMAND$RIVE!RM,OCK3CREWS
 .OTE4IGHTENINGLOCKSCREWSlNGERTIGHTISOFTENNOTTIGHTENOUGHBUT
TIGHTENINGTHEMMORETHANAFULLTURNOFTENBREAKSTHEM
4IGHTENTHELOCKSCREWUNTILSNUG
(OLDTHEDRIVEARMATTHECLAMPBLOCKBYHANDORWITHAINCHOPEN
WRENCH)FAWRENCHISUSEDPLACEITBETWEENTHETORQUETUBESHAFT
ANDTHELOCKSCREWTAKINGCARENOTTODAMAGETHETORQUETUBESHAFT
ORBEARING)NTHECASEOFTHERANGEARMLOCKSCREWPLACETHEWRENCH
BETWEENTHESHAFTANDLOCKSCREW
4IGHTENTHELOCKSCREWTOTURNBEYONDSNUG


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INCHINEITHERDIRECTION$RIVEARMSHOULDSPRINGBACKWITHOUTYIELDING
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RECORDERMECHANISMWHENLINKAGEADJUSTMENTSARENECESSARY
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OVERTRAVELCHECKFORINTERFERENCEATZEROANDFULLSPANPERTHEFOLLOWING
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2EMOVETHECHARTPLATEBYDISENGAGINGTHECHARTPLATELATCHESONBOTH
SIDESANDSLIDINGTHECHARTPLATERETAINERBRACKETS
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,OOSENTHESCREWSONZEROANDFULLSCALEOVERRANGESTOPS
6ENTTHE$05LOWPRESSUREHOUSING!PPLYSUFlCIENTPRESSURETOTHE
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INDICATION
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4IGHTENTHEZEROSCALEOVERRANGESTOPSCREW
!PPLYSUFlCIENTPRESSURETOTHE$05LOWPRESSUREHOUSINGTOMOVETHE
PENAPPROXIMATELYINCHBELOWZEROINDICATION
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4IGHTENTHEFULLSCALEOVERRANGESTOPSCREW
5NLOCKTHEmOWRECORDERHUBCLIP2EMOVETEMPORARYCALIBRATIONCHART
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BRACKETSANDENGAGINGEACHSIDEINTOTHECHARTPLATELATCHES
)NSTALLAREGULARRECORDERCHARTANDLOCKITINTOPLACEWITHCHARTHUBCLIP
#HECKTHEPENSTOMAKESURETHATTHEYTOUCHTHECHARTIFNECESSARY
STRAIGHTENPENSBYSLIDINGTHEMBETWEENTWOlNGERSANDCURLINGIN
ANDOUT

8°
Torque
Tube
Shaft
DPU Replacement
Before installing a replacement DPU, the new DPU should
be checked for proper torque tube rotation:
1. Mount the DPU on a suitable pipe stand and connect to
 a standard pressure source.
2. Adapt a graduated degree scale to torque tube housing.
3. Adapt a pointer to exposed end of the torque shaft.
4. Apply 100 percent differential pressure to the high-
 pressure housing of the DPU. The pointer attached to
 the torque tube shaft should indicate 8 degrees of travel.
B. Cleaning/Inspection Procedure
 Instruments used where solids or semi-solids may accumulate inside the
 pressure housings require periodic inspection and cleaning, as follows.
 1. Remove the DPU from service and remove the pressure housings.
 2. Carefully remove the pressure housings from the bellows unit assembly.
 This procedure should be performed prior to removing the DPU housing
 bolts, if the DPU has been installed in gas applications with working
 pressures greater than 200 psig.
 1. Back off all housing bolts 4 turns.
 2. Check for internal pressure by attempting to move the housing in and
  out along the bolts.
  a. If the housing moves freely – no pressure is present – servicing
   or repair may continue.
  b. If the housing does not move freely – the bellows may be pressurized
   and is potentially hazardous if further disassembled.
   Tighten the bolts and return the unit to the factory or authorized
   NuFlo service center for repair.
   Tag the unit and specify “Gas in Bellows”.
Notice – If accumulation of solids or semi-solids is extensive, remove the
housings carefully to prevent damaging the bellows.
A. Pressure Check Procedure
DPU Cleaning and Inspection
WARNING
(HIGH-PRESSURE GAS INSTALLATIONS AND PRESSURES
GREATER THAN 200 PSIG)
HIGH-PRESSURE GAS HAZARD ON DISASSEMBLY OF THE DPU.
BEFORE REMOVING THE DPU HOUSING BOLTS, PERFORM THE
PRESSURE CHECK PROCEDURE (See STEP “A” below).
WARNING
FAILURE TO PERFORM THIS PROCEDURE CAN RESULT IN
SEVERE INJURY, DEATH OR SUBSTANTIAL PROPERTY DAMAGE
DUE TO THE RELEASE OF INTERNAL PRESSURE.
20