fuel dispenser calibration canada
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1. Measurement Canada2. > Las and !e"uirements
P-G-01 Procedures for the Calibration,
Certification and Use of Gas Measuring
Apparatus - Woring !e"el #onic $o%%le
Pro"ers Pursuant to the &e'uirements of #-
G-01
#rocedures $or the Cali%ration& Certi$ication and Use o$ 'as Measuring (pparatus ) *orking
Level Sonic +o,,le #rovers #ursuant to the !e"uirements o$ S)')-1& in #F $ormat& 1//.0
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#)')-1 3rev.145 Summar6 o$ (mendments to #)')-1
#ection (escription
All !e$ormatted to ne $ormatting re"uirements.
)*+** .11/ Corrected $ormula.
)*+** .1/ Corrected $ormula.
)*+** Corrected e7amples and the $ormula $or 8C meters.
)***!eorded to remove test points %elo the ma7imum errors e7pected $or the intended
use o$ the measuring apparatus.
)**+*1*
.)/(dded percent correction $ormula $or imperial units.
)*) !emoved as the repeata%ilit6 testing is no longer a re"uirement.
able of Contents
1.- Scope
1.1 'eneral2.- !e$erences
9.- e$initions
:.- Sa$et6
:.1 Scope:.2 !e"uirements
:.9 Ha,ards
:.: Sa$e ;perating #rocedures
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/.2.2.1 Scope
/.2.2.2 'eneral
/.2.2.9 (pparatus/.2.2.: #rocedure
/.2.2.< !emarks
/.9 #rocedures For (ssessing Mechanical !e"uirements/.9.1 Leak 8ests
/.9.1.1 ;perational Leak 8ests
/.9.1.1.1 Scope/.9.1.1.2 'eneral
/.9.1.1.9 (pparatus
/.9.1.1.: #rocedure
/.9.1.1.< !emarks/.9.2 Flo !ate 8ests
/.9.2.1 Scope
/.9.2.2 'eneral
/.9.2.9 (pparatus/.9.2.: #rocedure
/.9.2.< !emarks/.9.9 !egister eri$ication
/.9.9.1 Scope
/.9.9.2 'eneral/.9.9.9 (pparatus
/.9.9.: #rocedure
/.9.2.< !emarks
/.: Meter Classi$ications and 8rans$er Meters/.:.1 Meter Classi$ications
/.:.1.1 Scope
/.:.1.2 'eneral/.:.1.9 (pparatus
/.:.1.: #rocedure
/.:.1.< !emarks/.< olume Correlations
/.
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*Statistical Sampling #lans $or the eri$ication and !everi$ication o$ =lectricit6 and 'as
Meters 3LM)=')-:& section 9.- and :.-& Consumer and Corporate ($$airs Canada& Legal
Metrolog6 ranch 1@A/4.
*Speci$ications $or the Cali%ration& Certi$ication and Use o$ 'as Measuring (pparatus ) Sonic
+o,,le #rovers 3S)')-1)=& Measurement Canada& 2--1)12)-14.
*)*orksheets $or the Cali%ration& Certi$ication and Use o$ 'as Measuring (pparatus ) Sonic
+o,,le #rovers 3S)')-1)=& Measurement Canada& 2--1)12)-14.
+*0 (efinitions
Calibration
Comparison %eteen to instruments& measuring apparatus or standards& one o$ hich is
o$ knon accurac6. #er$ormed to detect& correlate& report& or eliminate %6 adustment an6
variation in accurac6 o$ the instrument or measuring apparatus o$ unknon accurac6.
Certification
( process hich ensures that a measuring apparatus has %een properl6 cali%rated&
properl6 installed $or its intended use& and that an accepta%le accurac6 correlation e7ists
%eteen it and a re$erence standard.
Certification esting
( speciali,ed $orm o$ cali%ration per$ormed according to $i7ed standards hich must %e
met prior to the issuance o$ the Measurement Canada proving s6stem certi$icate.
(irect Counting Gas Measuring Apparatus
( gas measuring apparatus hich determines meter error using register revolutions o$ the
meter under test.
2igh !oad &ate
8he term used to descri%e the $lo rate corresponding to 1:< D
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3nitial Certification
Certi$ication o$ gas measuring apparatus $or the $irst time.
!ocal 4olumetric #tandard
( master %ell prover or certi$ied trans$er prover located at or near the site o$ the gasmeasuring apparatus.
!o5 !oad &ate
8he term used to descri%e the $lo rate corresponding to :< D
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65ner
8he oner o$ the gas measuring apparatus to %e cali%rated and certi$ied or recerti$ied.
&ecertification
Certi$ication o$ a gas measuring apparatus su%se"uent to the initial certi$ication.
&elati"e 7rror
8he a%solute error o$ measurement divided %6 the true 3conventional4 value o$ themeasurand. 8he measurand is a "uantit6 su%ected to measurement.
ransfer Meter
( non)converting meter supplied %6 the oner $or the purposes o$ volume correlations on
the gas measuring apparatus.
4olume Correlation
8he process %6 hich a speci$ic volume registered %6 a trans$er meter or measured %6 a
gas measuring apparatus is related to or tracea%le to a local volumetric standard.
*0 #afet8
*1 #cope
8he purpose o$ this section is to descri%e the sa$et6 re"uirements and ha,ards hen per$orming
certi$ication testing and use o$ gas measuring apparatus ) sonic no,,le provers as related toSpeci$ication S)')-1)=.
* &e'uirements
( Measurement Canada inspector shall have su$$icient knoledge and e7perience to test andoperate gas measuring apparatus pursuant to the speci$ication. ?nspectors ill %e deemed
"uali$ied i$ the6 have su$$icient knoledge& training and e7perience ith various models and
t6pes o$ gas measuring apparatus ) sonic no,,le provers and the metrological theories to per$ormthat dut6 sa$el6 and properl6.
( "uali$ied Measurement Canada inspector is re"uired to %e aare o$ the $olloing sa$et6
documents5
314 Canada La%our Code& #art ??J
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324 !egulations respecting ;ccupational Sa$et6 and Health made under #art ?? o$ the Canada
La%our CodeJ
394 Sa$et6 and Health Committees and representatives regulationsJ
3:4 8reasur6 oard Manuals that outline the +ational Koint Council (greements as related toHealth and Sa$et6. 3#ersonnel Management Manual ol. 124J
3
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314 Making availa%le the speci$ication S)')-1)=& procedures and orksheets& upon re"uest.
324 Making availa%le the certi$ication re"uest $orm and accepting the completed re"uest.
394 (ssigning the gas measuring apparatus certi$ication testing to %e carried out %6 the local
inspection sta$$ o$ Measurement Canada.
3:4 =nsuring that all re"uired pre)testing has %een per$ormed %6 the oner o$ the gas measuring
apparatus. 8his should %e esta%lished %6 e7amining all the re"uired orksheets and test results.
3
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314 ;%taining and $orarding a completed device certi$ication re"uest to the local Measurement
Canada o$$ice.
324 =nsuring that the gas measuring apparatus is compliant ith all the re"uirements as stated insection :.
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the certi$ication o$ the gas measuring apparatus and the e7tent to hich additional certi$ication
tests must %e per$ormed. 8his decision ill %e made %6 the local o$$ice o$ Measurement Canada&
in consultation ith the !egional 'as Specialist andBor =ngineeringBLa%orator6 ivision.Measurement Canada ma6 limit the scope o$ certi$ication o$ a certi$ied gas measuring apparatus
%e$ore alloing the oner to proceed ith the stated modi$ication.
3114 #roviding trans$er meters o$ su$$icient sta%ilit6 and repeata%ilit6 to per$orm all tests re"uired
%6 this Speci$ication. (n6 testing re"uired to guarantee this re"uirement %eing met shall %eper$ormed %6 the oner.
3124 ( complete set o$ operating instructions $or the apparatus to %e certi$ied must %e made
availa%le to the Measurement Canada inspector prior to certi$ication testing. 8hese instructionsmust %e o$ su$$icient detail to allo the inspector to %e $amiliar ith the operation o$ the
apparatus.
3194 #roviding a suita%le leak test apparatus $or use to determine the leak test detection
capa%ilities o$ the gas measuring apparatus. 8he oner shall provide the necessar6 calculationsre$erenced to the local volumetric standard or other certi$ied standards to prove the oner
supplied leak test apparatus meets the speci$ied re"uirements.
*1* #tatement of intended use9
( statement o$ intended use must accompan6 the certi$ication re"uest $orm listed in the
procedures. 8he documentation re"uirements are listed in S)')-1)=.
)*0 Procdures for Assessing Metrological &e'uirements
)*1 General
)*1*1 #cope
8o ensure that all metrological re"uirements descri%ed in S)')-1)= are in compliance prior to the
commencement o$ the certi$ication testing.
)*1* Worsheet Pacage
8he $irst step in the certi$ication testing process is to produce a complete set o$ orksheets $or
each gas measuring apparatus to %e tested.
8he orksheet set is reproduced in the anne7 o$ these procedures. Folloing are speci$ic
instructions $or completing the $orms5
314 =ach orksheet is identi$ied ith to headers. 8he top header identi$ies the document& the
revision date and the num%ered header $or each sheet. 8his header aids in locating and using thecorrect sheet $or the testing %eing completed.
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324 8he second header is used to customi,e the orksheet package to the gas measuring
apparatus %eing tested. 8he second header must %e completed $or each sheet as testing proceeds.
8his header allos $or the use o$ multiple pages o$ the same orksheet as ill %e re"uired todocument the same test $or di$$erent meter t6pes. For e7ample& the orksheet $or $lo rate
testing contains su$$icient area $or 1 meter t6pe. ?$ 12 di$$erent meter t6pes are to %e testing& 11
additional copies o$ that orksheet must %e produced $or inclusion in the package.
8he completed original and additional sheets are placed in the package and num%ered& shoingthe orksheet page and total num%er o$ pages in that section. Using the e7ample a%ove& the
pages ould sho 1 o$ 12& 2 o$ 12& and 9 o$ 12.
)*1*+ Calibration &eference #tandards
(ll re$erence standards used in the certi$ication o$ gas measuring apparatus must %e certi$ied %6an approved la%orator6. ?ncluded in the orksheet package are sections that re"uire this
in$ormation.
)* Procedures :or Assessing 7n"ironmental &e'uirements
)**1 emperature
)**1*1 #cope
8he purpose o$ this procedure is to ensure that the am%ient temperature surrounding the gas
measuring apparatus is ithin the re"uirement set out in the speci$ication. 8he procedure relatesto section
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314 8he procedure ma6 %e repeated during the course o$ the certi$ication testing i$ it appears that
the temperature is $luctuating to the e7tent that it ma6 %e outside the speci$ied limits.
324 ?$ more than 1 gas measuring apparatus is re"uested $or certi$ication testing& ithin the sameproving roomJ the temperature testing procedure must %e completed $or each gas measuring
apparatus $or hich certi$ication testing has %een re"uested.
394 8he temperature test must %e completed once& regardless o$ the num%er o$ meter proving
methods re"uested %6 the oner.
)** 2umidit8
)***1 #cope
8he purpose o$ this procedure is to ensure that the humidit6 o$ the air %eing used %6 the gas
measuring apparatus is ithin the re"uirement set out %6 the manu$acturer. 8he procedure relates
to section
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)*+ Procedures :or Assessing Mechanical &e'uirements
)*+*1 !ea ests
)*+*1*1 6perational !ea ests
)*+*1*1*1 #cope
8he purpose o$ this procedure is to ensure that the leak detection mode o$ the gas measuring
apparatus is a%le to detect leaks accuratel6 and repeatedl6. 8he procedure relates to section
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3:4 8he operation leak test must %e completed once regardless o$ the num%er o$ meter proving
methods re"uested %6 the oner.
)*+* :lo5 &ate ests
)*+**1 #cope
8his procedure relates to section
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3124 Compare $lo rates determined %6 testing to the nominal $lo rates $or the t6pe o$ meter
%eing tested using the $olloing $ormula5
3194 !ecord percent variance. Calculated percent variance must %e less than
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Measured $lo rate
/@.9< cu%ic $eet per hour
# 33/@.9< ) 09.-4B1/-4 7 1-- ) 2.2AE
)*+*+ &egister 4erification
)*+*+*1 #cope
8he purpose o$ this procedure is to ensure that& i$ so e"uipped& the gas measuring apparatus iscapa%le o$ accuratel6 determining i$ a pro%lems e7ists ith the meter register. 8he procedure
relates to section
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)* Meter Classifications and ransfer Meters
)**1 Meter Classifications
)**1*1 #cope
8he purpose o$ this procedure is to descri%e the methodolog6 used in grouping meter t6pes into
classes or classi$ications. 8he procedure relates to section
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)**1* General
8he procedure involves per$orming volume correlation& comparing the results o%tained on the
gas measuring apparatus undergoing test to the local volumetric standard.
)**1*+ Apparatus
Calculator
8rans$er meters
)**1* Procedure
314 Using the local volumetric standard& per$orm / tests at %oth the lo load rate and the high
load rate.
324 etermine x$or each load rate.
394 etermine the lo and high $lo rate o$ the trans$er meter& as determined on the local
volumetric standard.
3:4 !ecord results.
3
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8he purpose o$ this procedure is to descri%e the procedures concerning the correlation to the
local volumetric standard using trans$er meters cali%rated as speci$ied in Speci$ication clause
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)**+*1*1 #cope
8he purpose o$ this procedure is to descri%e the procedures utili,ed in testing other modes o$operation. 8he procedure relates to section
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31-4 8he $lo rates as determined on the local volumetric standard and the gas measuring
apparatus must meet the re"uirements shon in section
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