3TATIC0RESSURE0EN#ALIBRATION
2EFERTOPAGE
4OCALIBRATETHESTATICPRESSUREPENANDASSOCIATEDLINKAGEPROCEEDASFOLLOWS
!DJUSTTHESTATICRANGEARMANDDRIVEARMATPRECISELYTHESAMEDISTANCE
FROMTHEBACKOFTHECASE
0LACESTATICDRIVELINKINTHEFOURTHHOLEFROMTHEPENSHAFTOFTHERANGEARM
!DJUSTSTATICPRESSURELINKAGETOFORMANGLESBETWEENTHEDRIVELINKSEE
ABOVEILLUSTRATION ANDPIVOTPOINTSOFTHEASSOCIATEDLINKAGEASFOLLOWS
A !PPLYSTATICPRESSURECENTERTHUMBNUTONTHEDRIVEARMAND
ARRANGESTATICLINKAGEASSHOWNONPAGE
B 3ETAANGLEBETWEENDRIVEARMLINK4IGHTENCLAMPBLOCKSCREW
C 6ARYTHELENGTHOFLINKTOGETAANGLEBETWEENRANGEARMANDLINK
D 3LIPTHERANGEARMONPENSHAFTTOONCHART
.OTICE
6ERIFYTHATALLLINKAGEISFREE!DJUSTRANGEARMANDDRIVEARM
ATPRECISELYTHESAMEDISTANCEBACKOFTHECASE!DJUSTTHELEVERARMAND
PENZEROADJUSTSCREWSTOTHEIRMIDPOINTSALLMIDSCALELINKAGEANGLES
MUSTBEMEASURED
2ELEASEPRESSUREANDRESETTHEPENTOZEROINDICATIONUSINGPENZEROADJUST
SCREWFORlNEADJUSTMENTORLESS &ORMAJORADJUSTMENTSMORETHAN
LOOSENRANGEARMLOCKSCREWANDSLIPTHEPENTOZEROONCHARTAND
RETIGHTENLOCKSCREW
.OTE
)TMAYBENECESSARYTORAISEORLOWERTHEPIVOTPOINTOFTHEDRIVE
LINKONTHERANGEARMASINSTEP)FCOUNTERCLOCKWISEMOVEMENTOFTHUMB
NUTSTEP DOESNOTINCREASESPANSUFlCIENTLYMOVETHEPIVOTPINUPTO
NEXTPIVOTHOLEIFCLOCKWISEMOVEMENTOFTHETHUMBNUTDOESNOTDECREASE
SPANSUFlCIENTLYMOVEPIVOTPINDOWNTOTHENEXTPIVOTHOLE
!PPLYPRESSUREANDOBSERVETHEPEN-AKETHENECESSARYADJUSTMENTS
BYTURNINGTHEDRIVEARMTHUMBNUTCOUNTERCLOCKWISEIFTHEPENISSLIGHTLY
UNDERRANGEDANDCLOCKWISEIFTHEPENISSLIGHTLYOVERRANGED2EPEATZERO
ANDADJUSTMENTUNTILCALIBRATIONATTHESETWOPOINTSISACHIEVED
2EPEATSTEPSANDUNTILFULLSCALECALIBRATIONISOBTAINED
!PPLYPRESSUREANDOBSERVEPENINDICATION
A )FPENINDICATESHIGHORLOWADJUSTDRIVELINKTOMAKEACORRECTION
APPROXIMATELYTIMESTHEERRORINTHEDIRECTIONOFTHEERROR
B 2ESETTHEPENTOTHELINEBYSLIPPINGTHEPENSHAFTATTHERANGE
ARMPIVOTPOINT
C 2EPEATTHISSTEP ASNECESSARY
2ELEASEPRESSUREANDRESETTHEPENTOZEROINDICATIONUSINGPENZEROADJUST
SCREWFORPRECISEADJUSTMENT
2EPEATSTEPSTHROUGHUNTILCALIBRATIONOFZEROLINEARITYANDSPAN
ANDINDICATION ISACHIEVED
!SSURERANGEARMLOCKSCREWSTHUMBNUTLOCKSCREWANDLINKSCREWSARETIGHT
2ECONNECTTHE$0LINKANDRANGEARM
5NLOCKTHERECORDERHUBCLIPANDREMOVETEMPORARYCALIBRATIONCHART
2EPLACETHECHARTPLATEBYSLIDINGITINTOTHECHARTPLATERETAINERBRACKETSAND
ENGAGINGEACHSIDEINTOTHECHARTPLATELATCHES
Summary of Contents for Barton 202E
Page 5: ...3TATIC 0RESSURE LEMENT 4ABLE...
Page 12: ...0 0EN ECHANISM...
Page 16: ...30 0EN ECHANISM...
Page 28: ...3 4 34 3 2 7 3 ODEL...
Page 29: ......
Page 30: ...3 4 34 3 2 7 3 ONT ODEL W 4EMP LEMENT...
Page 31: ......
Page 32: ...2 3 4 34 3 2 7 3 ONT ODEL 05...
Page 33: ...3...
Page 34: ...4 0ARTS RAWING 3 4 0 243 2 7 34...
Page 35: ...5 0ARTS IST...
Page 36: ...6 0ARTS IST CONTINUED...
Page 37: ...37 05 0ARTS RAWING...
Page 38: ...38 05 0ARTS IST...