council direct septemb approxim law member state relat hot 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 hot 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 hot water meter laid requir met control carri sign mark affix instrument freeli import market adopt direct articl direct appli hot water meter intend continu determin volum hot water pass meter provid measur devic link indic devic purpos direct quot hot water quot water temperatur exce ºc exce ºc hot water meter incorpor circulatori system transfer thermal energi exclud scope direct articl hot water meter eec mark sign affix annex direct subject eec pattern approv submit eec initi verif oj oj oj oj articl member state refus prohibit restrict place market entri servic hot water meter bear eec pattern approv sign eec initi verif mark ground metrolog properti articl member state bring forc law regul administr provis compli direct januari forthwith inform commiss thereof member state commun commiss text main provis nation law adopt field govern direct articl direct address member state brussel septemb council presid rai mac sharri annex terminolog definit annex appli hot water meter hereinaft refer quot meter quot oper mechan principl meter volumetr chamber move boundari action veloc water blade rotor radial axial turbin annex appli hot water meter fit electron devic flowrat flowrat volum water pass meter unit time 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 maximum permiss error exceed minimum flowrat qmin minimum flowrat qmin flowrat maximum permiss error exceed fix function qn flowrat rang flowrat rang 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 flowrat rang flowrat maximum permiss error discontinu maximum permiss error maximum permiss error limit error permit direct eec pattern approv eec initi verif meter loss pressur loss pressur mean loss caus presenc meter pipelin 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 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 advers effect metrolog properti time record revers materi meter made materi adequ strength stabil purpos construct materi resist intern normal extern corros protect appli suitabl surfac treatment water temperatur variat temperatur rang ºc advers affect materi construct meter sound pressur tight temperatur resist meter withstand indefinit malfunct leakag seepag wall perman deform continu appli water temperatur ºc continu appli pressur design term maximum oper pressur minimum pressur bar loss pressur loss pressur ascertain eec pattern approv test exce bar nomin flowrat bar maximum flowrat basi test result meter classifi group pressur loss maximum flowrat exce valu bar group enter eec pattern approv certif indic devic indic devic simpl juxtaposit constitu element reliabl easi unambigu read volum water measur express cubic metr volum posit pointer circular scale displai row line consecut digit apertur combin system cubic metr multipl black submultipl cubic metr red actual appar height digit mm digit indic type visibl displac digit vertic upward advanc digit decad complet time signific decad roller show signific digit move continu case type number cubic metr indic pointer type rotat clockwis direct cubic metr scale divis express posit neg number establish system consecut decad data shown part scale case dial digit indic unit symbol shown dial vicin digit indic fastest move visual readabl graduat element quot control element quot move continu scale interv verif scale interv 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 verif scale interv number figur valu verif scale interv 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 interv small minimum flowrat test hour supplementari devic star disc refer mark ad order show movement measur devic visibl indic devic adjust devic meter fit adjust devic alter relationship volum volum pass devic compulsori meter make action veloc water blade rotor acceler devic acceler devic increas speed meter qmin prohibit addit devic meter includ puls gener devic provid devic appreci affect metrolog properti eec pattern approv certif provid addit special fix detach devic permit automat verif meter iv mark inscript identif inscript meter bear legibl indel manner separ group meter case indic dial inform plate item inform manufactur trade trademark metrolog class nomin flowrat qn cubic metr hour year manufactur individu serial number arrow show direct flow eec pattern approv sign maximum oper pressur bar exce bar maximum oper temperatur form ºc 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 meter fit protect devic seal ensur meter properli instal meter adjust devic dismantl alter damag protect devic eec pattern approv procedur eec pattern approv procedur direct eec pattern test ascertain applic file pattern conform requir direct compet servic carri laboratori test condit number meter test number meter submit manufactur shown tabl gt pic file quot quot gt depend test progress compet servic decid carri test meter submit request addit meter manufactur order continu test pressur metrolog test provid pressur meter outlet suffici high prevent cavit test equip gener meter test individu case demonstr accur individu characterist metrolog servic member state step ensur rel inaccuraci measur volum water deliv exce allow made error instal maximum permiss inaccuraci case measur pressur case measur loss pressur test rel variat flowrat exce qmin qt qt qmax maximum permiss inaccuraci measur temperatur ºc equip approv metrolog servic member state concern test carri test test procedur test compris oper carri order shown pressur tight test determin error curv basi flowrat ascertain effect pressur temperatur subject normal instal condit straight section pipe upstream downstream meter constrict obstacl stipul manufactur type meter determin pressur loss acceler endur test thermal shock resist test meter nomin flowrat qn descript test test carri pressur tight test conduct part ºc meter withstand leakag seepag wall pressur time maximum oper pressur appli period minut meter withstand damag jam pressur maximum oper pressur appli period minut result error curv loss pressur test provid suffici number point enabl curv plot confid rang acceler endur test carri set tabl gt pic file quot quot gt test seri test measur error determin condit minimum requir flowrat qmin qt qn qmax test volum water pass meter suffici rotat pointer roller verif scale complet revolut elimin effect cyclic distort thermal shock resist test compris cycl carri gt pic file quot quot gt condit eec pattern approv meter pattern approv conform administr technic metrolog requir direct annex test show conform part ii iii annex metrolog technolog characterist acceler endur test thermal shock resist test variat relat initi curv greater qt qmax greater qmin qt observ eec pattern approv certif eec pattern approv certif provid possibl accuraci test carri cold water initi verif possibl permit eec pattern approv examin studi hot water cold water rule equival enabl cold water accuraci test establish shown meter pass test compli maximum permiss error laid case eec pattern approv certif includ descript test relev requir permiss error test flowrat vi eec initi verif eec initi verif procedur council direct eec verif method eec initi verif carri place approv metrolog servic member state layout premis test equip verif carri safe reliabl condit loss time person respons test requir compli respect temperatur test carri cold water accord provis laid eec pattern approv certif arrang made test centr enabl meter test seri exit pressur meter suffici prevent cavit special measur requir prevent interact meter complet unit includ automat devic pass valv flow restrictor provid test circuit meter verifi control tank defin check intern pressur tight circuit time type water suppli system test circuit oper parallel interact incompat requir control tank divid chamber separ wall suffici rigid ensur volum chamber vari adjac chamber full empti test procedur meter conform approv pattern eec initi verif compris pressur tight accuraci test pressur tight test pressur tight test carri cold water carri minut time maximum oper pressur test leakag seepag wall meter accuraci test accuraci test hot water accuraci test conduct hot water temperatur ºc flowrat qmax qmax qt qt qmin qmin test meter compli maximum permiss error stipul error found lie direct meter adjust error exce half maximum permiss error accuraci test cold water eec pattern approv certif accuraci test carri cold water case test carri accord procedur laid certif