council direct decemb approxim law member state relat cold water meter eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe member state construct method control cold water meter subject mandatori provis differ member state hinder trade instrument approxim provis council direct eec juli approxim law member state relat common provis measur instrument method metrolog control amend act access laid eec pattern approv eec initi verif procedur accord direct technic requir design function cold water meter laid requir met control carri sign mark affix instrument freeli import market adopt direct articl direct appli cold water meter integr measur instrument continu determin volum water liquid pass compris measur devic link indic devic water consid quot cold quot temperatur rang articl cold water meter bear eec mark sign annex direct subject eec pattern approv submit eec initi verif articl member state refus prohibit restrict place market entri servic oj oj oj oj cold water meter bear eec pattern approv symbol eec initi verif mark ground metrolog properti articl member state put forc law regul administr provis need order compli direct month notif forthwith inform commiss thereof member state ensur text main provis nation law adopt field cover direct commun commiss articl direct address member state brussel decemb council presid durafour annex terminolog definit annex appli cold water meter base direct mechan process involv volumetr chamber mobil wall action veloc water rotat rate move part turbin impel flowrat flowrat volum water pass meter unit time volum express cubic metr litr time hour minut second volum deliv volum deliv total volum water pass meter time maximum flowrat qmax maximum flowrat qmax highest flowrat meter function limit period damag exceed maximum permiss error maximum permiss loss pressur nomin flowrat qn nomin flowrat qn equal half maximum flowrat qmax express cubic metr hour design meter nomin flowrat qn meter function normal continu intermitt oper condit exceed maximum permiss error minimum flowrat qmin minimum flowrat qmin flowrat meter exce maximum permiss error fix function qn flowrat rang flowrat rang water meter bound maximum minimum flowrat qmax qmin divid region term upper lower maximum permiss error transit flowrat qt transit flowrat qt flowrat divid upper lower region flow rang rate maximum permiss error discontinu maximum permiss error maximum permiss error limit error permit direct eec pattern approv eec initi verif water meter loss pressur loss pressur mean loss caus presenc water meter conduit ii metrolog characterist maximum permiss error maximum error permit lower region qmin inclus qt inclus maximum error permit upper region qt inclus qmax inclus metrolog class water meter divid valu qmin qt defin metrolog class tabl gt pic file quot quot gt iii technolog characterist construct gener provis meter construct give long servic guarante proof fraud conform provis direct normal condit meter subject accident revers flow capabl withstand deterior chang metrolog properti time record revers materi water meter made materi adequ strength stabil purpos water meter construct materi resist intern normal extern corros protect suitabl surfac treatment water temperatur variat work temperatur rang advers affect materi construct water meter sound pressur tight meter withstand constantli defect function leakag seepag wall perman deform continu water pressur design term maximum oper pressur minimum pressur bar loss pressur loss pressur meter determin eec pattern approv test exce bar nomin flowrat bar maximum flowrat basi test result meter divid group maximum valu pressur loss bar relev eec pattern approv certif indic mechan indic simpl juxtaposit constitu element reliabl easi unambigu read volum water measur express cubic metr volum posit pointer circular scale read row line consecut digit apertur combin system cubic metr multipl black multipl cubic metr red actual appar height digit mm digit indic type visibl displac digit upward advanc digit unit complet digit immedi lower describ tenth roller show digit lowest move continu case type number cubic metr indic pointer type rotat clockwis direct cubic metr scale divison express posit neg number establish system consecut decad shown part scale case dial digit indic unit symbol shown dial vicin digit indic fastest move visibl graduat element control element scale interv quot verif scale interv quot move continu control element perman fit temporarili ad detach part part signific influenc metrolog properti meter length verif scale interv mm mm scale consist line equal thick exceed quarter distanc ax consecut line differ length contrast band constant width equal length scale divis period year notif direct downward movement digit permit movement arrow length scale divis mm number figur verif scale divis valu indic devic record volum express cubic metr hour oper nomin flowrat return size verif scale divis base formula verif small ensur measur inaccuraci allow read error half length smallest scale divis small minimum flowrat test hour period year notif direct maximum durat hour permit supplementari devic star disc refer mark ad order show movement measur devic visibl indic adjust devic meter fit adjust devic alter relationship volum volum pass devic compulsori meter make action veloc water rotat move part acceler devic acceler devic increas speed meter qmin prohibit iv mark inscript identif inscript compulsori meter carri legibl indel manner separ group meter case indic dial indic plate inform trade manufactur trademark metrolog class nomin flowrat qn cubic metr hour year manufactur individu serial number arrow show direct flow eec pattern approv symbol maximum oper pressur bar exce bar letter quot quot quot quot meter oper properli vertic horizont posit place verif mark space eec verif mark provid essenti part meter case visibl dismantl seal water meter protect devic seal seal water meter properli instal possibl dismantl alter water meter adjust devic damag protect devic eec pattern approv procedur procedur eec pattern approv carri accord direct eec pattern test ascertain applic file pattern conform provis direct laboratori test carri number instrument condit number meter test number meter submit manufactur shown tabl gt pic file quot quot gt pressur metrolog test point pressur meter outlet suffici high prevent cavit test equip gener meter test individu case demonstr individu characterist metrolog servic member state step ensur maximum rel inaccuraci measur volum water deliv exce includ error instal maximum permiss inaccuraci case measur pressur case measur loss pressur test rel variat flowrat exce qmin qt qt qmax equip approv metrolog servic member state concern matter test carri test procedur test compris oper carri order shown pressur tight test determin error curv basi flowrat ascertain effect pressur take account normal instal condit type meter straight section pipe upstream downstream meter constrict obstacl stipul manufactur determin pressur loss acceler endur test pressur tight test consist part meter withstand leakag seepag wall pressur bar time maximum oper pressur appli period minut point meter withstand damag blockag pressur bar maximum oper pressur appli period minut point result test provid suffici number point enabl curv plot accur rang acceler endur test carri gt pic file quot quot gt test seri test measur error determin minimum requir flowrat qmin qt qn qn qn qn test volum water pass meter suffici rotat pointer roller verif scale complet revolut elimin effect cyclic distort condit eec pattern approv water meter pattern approv fulfil condit conform administr technic metrolog provis direct annex test point show conform part ii iii annex metrolog technolog characterist acceler endur test variat relat initi curv greater qt qmax greater qmin qt observ maximum error meter qmin qt qt qmax vi eec initi verif carri place approv metrolog servic member state layout premis test equip verif carri safe reliabl condit loss time person respons control provis point compli meter test seri desir method emploi exit pressur meter suffici prevent cavit special measur requir prevent interfer meter complet unit includ automat devic pass valv flow restrictor provid test circuit meter verifi control tank defin verifi time intern pressur absorpt type water suppli system test circuit oper parallel interfer incompat provis point control tank divid chamber separ wall suffici rigid ensur volum chamber vari adjac chamber full empti verif includ accuraci test flowrat qmax qmax qt qt qmin qmin test involv determin pressur loss eec pattern approv certif maximum permiss error shown point test volum water pass meter suffici rotat pointer roller verif scale complet revolut elimin effect cyclic distort error found lie direct water meter adjust error exce half maximum permiss error