SITRANS F flowmeters. SITRANS F R Rotary-piston meters Introduction. 4/290 Siemens FI O verview

Transcription

1 Rotary-piston meters Introduction O verview R o ta ry -p isto n meter D N (½ ) w ith sing le-p o inter d ia l ty p e 0 w ith o u t a c c ec c o ries R o ta ry -p isto n meter D N 80 (3 ) w ith sing le-p o inter d ia l ty p e 0 w ith p u lser R o ta ry -p isto n meter D N 2 ( ) w ith d o u b le-p o inter d ia l ty p e 3 w ith o u t a c c ec c o ries A c id resista nt ro ta ry -p isto n meter D N 2 ( ) w ith d o u b le-p o inter d ia l ty p e 3 w ith o u t a c c ec c o ries R o ta ry -p isto n meter D N 0 (2 ) w ith d o u b le-p o inter d ia l ty p e 0 w ith c o o l- ing a tta c h ement a nd p u lser A u to ma tic b a tc h meter D N 0 (2 ), w ith ro ta ry -p isto n meter, qu a ntity p reset reg ister a nd sh u t-o ff v a lv e /290 Siemens FI

2 A pplication Benefits H ig h mea su ring a c c u ra c y (a p p ro v ed fo r c u sto d y tra nsfer) Su ita b le fo r flo w ra tes u p to 0 l/min (26 U Sg p m) W id e flo w ra te ra ng e L o w d ep end enc e o n v isc o sity L o w p ressu re d ro p Simp le c o mp a c t d esig n H ig h relia b ility A d v a nta g es w ith ex tremely h ig h v isc o sity sinc e p ressu re d ro p s u p to 3 b a r (3. p si) p ermissib le A d v a nta g es w ith v ery lo w v isc o sity (e.g. liqu efied g a s) sinc e o nly lo w p ressu re d ro p s o c c u r b ec a u se o f th e lig h t-w eig h t mec h a nism w ith g o o d ru nning c h a ra c teristic s W id e ra ng e o f a v a ila b le ma teria ls, e.g. p la stic lining fo r p a rtic - u la rly c o rro siv e liqu id s E a sy serv ic e a s a resu lt o f simp le d esig n L iqu id temp era tu res u p to 300 C A lso a v a ila b le w ith ex terna l h ea ter M etering a nd d isp ensing w ith o u t a p o w er su p p ly N o inlet o r o u tlet p ip e sec tio ns requ ired Ind ep end ent o f flo w p ro file, c o nd u c tiv ity a nd d a mp ing R o ta ry -p isto n meters a re c h a ra c teriz ed b y : A c c u ra c y R elia b ility R o b u st d esig n A pplication Fo r u se in c lo sed liqu id c irc u its a t p ressu res u p to P N 63 (M W P 9 p si) a nd liqu id temp era tu res u p to 300 C (7 2 F). Fo r a ll liqu id s ra ng ing fro m lu b ric a ting o ils u p to c o rro siv e a c - id s, v isc o sity 0.2 mp a s (c p ) a nd fo r p a sty, v isc o u s liqu id s (e.g. c o lo rs fo r o ffset p rinting w ith mp a s (c p )) Fo r mea su rements requ iring a n a c c u ra c y a sso c ia ted w ith c u sto d y tra nsfer. A p rerequ isite fo r ex a c t mea su rements is th a t th e liqu id is h o mo - g eneo u s w ith o u t c o a rse so lid imp u rities o r g a s inc lu sio ns. R o ta ry -p isto n meters a re ma inly u sed in th e p etro leu m ind u stry, th e ra w ma teria l ind u stries, th e c h emic a l ind u stry, th e fo o d stu ffs a nd b ev era g e ind u stries a nd in p o w er sta tio ns a nd d istric t h ea t- ing sta tio ns: In th e b a sic v ersio n (meter mec h a nism a nd reg ister) fo r metering in th e p ro d u c tio n, d istrib u tio n a nd c o nsu mp tio n o f liqu id s. W ith qu a ntity p reset reg ister a nd mec h a nic a l sh u t-o ff v a lv e a s a n a u to ma tic b a tc h meter w ith o u t a p o w er su p p ly W ith a c c esso ries (p u lser etc.) fo r flo w ra te mea su rement, remo te metering a nd d ig ita l d a ta p ro c essing T h ey c o mp lement o ne a no th er w ith resp ec t to th e flo w ra te ra ng es b u t h a v e p a rtic u la r a d v a nta g es fo r sp ec ific a p p lic a tio ns. R o ta ry -p isto n meters a re a p p ro v ed fo r c u sto d y tra nsfer in th e E u ro p ea n U nio n a nd in ma ny o th er c o u ntries. Rotary-piston meter A utomatic batchmeter Ind u stria l d esig n D N (½ ;) a nd D N 2 ( ) Ind u stria l d esig n D N 0 (2 ) a nd D N 80 (3 ) A c id -resista nt mo d el R o ta ry -p isto n meter w ith mec h a nic a l sh u t-o ff v a lv e Fo r ind u stria l liqu id s su c h a s: A lc o - h o ls, b itu men, d isp ersio ns, p a ints, g rea ses, liqu id g a ses, a d h esiv es, la c qu ers, a lk a lis, so lv ents, minera l o ils, a c id s etc. R a ted flo w l/min (U Sg p m) R a ted siz e D N mm (inc h ) 20 (.3) (½ ) (26.) 2 ( ) O rd er N o. P a g e 7 M R M R M R 0 7 M R 20 7 M R 30 7 M R 0 Fo r ind u stria l liqu id s su c h a s: A lc o - h o ls, b itu men, d isp ersio ns, p a ints, g rea ses, liqu id g a ses, a d h esiv es, la c qu ers, a lk a lis, so lv ents, minera l o ils, a c id s etc. R a ted flo w l/min (U Sg p m) R a ted siz e D N mm (inc h ) O rd er N o. P a g e /30 00 (32) 0 (2 ) 7 M R 0 7 M R 20 7 M R 30 7 M R 0 / (3 ) 7 M R 60 7 M R M R M R 60 Fo r p a rtic u la rly c o rro siv e liqu id s su c h a s: P h o sp h o ric a c id, h y d ro - c h lo ric a c id, d ilu te su lfu ric a c id, etc. R a ted flo w l/min (U Sg p m) R a ted siz e D N mm (inc h ) O rd er N o. P a g e R a ted flo w Fo r ind u stria l liqu id s su c h a s: A lc o - h o ls, b itu men, d isp ersio ns, p a ints, g rea ses, liqu id g a ses, a d h esiv es, la c qu ers, a lk a lis, so lv ents, minera l o ils, a c id s etc. l/min (U Sg p m) R a ted siz e D N mm (inc h ) O rd er N o. P a g e /308 2 () 7 M R /32 2 () 7 M R 2 /3 7 M R 3 /30 00 (32) 0 (2) 7 M R 2 /3 7 M R 3 Siemens FI /29

3 Function and Design Function Measuring principle W h en metering flo w ing liqu id s, eith er th e v o lu me V is rec o rd ed o v er a g iv en time t o r th e mo menta ry flo w ra te q is d etermined. T h e rela tio nsh ip b etw een th ese v a ria b les is V = q t. In a c c o rd a nc e w ith th ese tw o mea su ring p rinc ip les, a d ifferentia tio n is ma d e b etw een: d irec t v o lu metric meters, a lso referred to a s p o sitiv e d isp la c e- ment meters. T h ese inc lu d e ro ta ry -p isto n meters. ind irec t v o lu metric meters su c h a s v elo c ity meters, w h ere th e flo w v elo c ity v rep resents a d irec t mea su re o f th e flo w ra te q a t a g iv en c ro ss-sec tio n F a c c o rd ing to th e rela tio nsh ip q = v A. E x a mp les inc lu d e elec tro ma g netic flo w meters a nd flo w meters o p era ting a c c o rd ing to th e d ifferentia l p ressu re p rinc ip le. R o ta ry -p isto n meters a re d irec t v o lu metric meters: T h ey o p era te a c c o rd ing to th e p o sitiv e d isp la c ement p rinc ip le. T h eir o p era tio n is b a sed o n th e c o ntinu o u s limita tio n o f d efined p o rtio ns o f th e v o lu metric flo w in th e mec h a nism b y c o ntinu o u s filling a nd emp - ty ing o f th e mea su rement sp a c e. T h is c o nsists o f th e w a lls o f th e mea su ring c h a mb er a nd th e mo v ing p a rt, i.e. th e ro ta ry -p isto n. T h e ro ta ry -p isto n is d riv en b y th e p ressu re d ifferenc e in th e metered liqu id b etw een th e inlet a nd o u tlet. T h e meters a re b a sic a lly p u rely mec h a nic a l d ev ic es o p era ting w ith o u t a p o w er su p - p ly. d isp la c ed w ith resp ec t to o ne a no th er, no d ea d p o int o c c u rs d u r- ing th e mo v ement o f th e p isto n. T h e p isto n mo v es c o ntinu o u sly a c c o rd ing to th e flo w o f th e metered liqu id. T h e ro ta ry mo v ement o f th e p isto n g u id e-p in is p ic k ed u p b y a d riv e memb er a nd tra nsmitted v ia a g la nd -free (ind u stria l d esig n o nly ) p erma nent ma g netic c o u p ling to th e reg ister. O ne rev o lu - tio n o f th e p isto n p in c o rresp o nd s to th e p a ssa g e o f th e c a p a c ity o f th e mea su ring c h a mb er (V + V 2 ) th ro u g h th e meter. A g ea r u nit c o nv erts th e rev o lu tio ns into a d ec ima l v a lu e o f e.g. 0 l, l, m 3 o r g a llo ns. Design M ea su ring p ro c ess in th e ro ta ry -p isto n T h e ro ta ry -p isto n (6) w h ic h h a s a d o u b le T -sh a p ed c ro ss sec tio n is g u id ed b y its g u d g eo n o r g u id e p in (3) in a n a nnu la r sp a c e in th e b a se o f th e mea su ring c h a mb er a nd a lso b y its slo t o n th e b a rrier (). T h e inlet p o rt (2) a nd o u tlet p o rt (7 ) a re lo c a ted o n eith er sid e o f th e b a rrier. T h ey a re c o ntinu o u sly sea led b y th e ro ta ry -p isto n a nd th e b a rrier. T h e inc o ming liqu id fills th e sic k le-sh a p ed sp a c es, a ttemp ts to enla rg e th em a nd th u s tu rns th e p isto n u ntil th e v o lu mes V u nd V 2 a re rea c h ed in su c c essio n. W ith th e fu rth er mo v ement o f th e p isto n, th is filled sp a c e is c o nnec ted to th e o u tlet a nd emp tied. Sinc e th e tw o sic k le-sh a p ed sp a c es th e inner a nd o u ter a re M etering mec h a nism o f a ro ta ry -p isto n meter D N 2/P N 0 ( /M W P p si) (ind u stria l mo d el) T h e mea su ring c h a mb er is inserted into th e c a se fo r th e ra ted p ressu re c la sses P N 2, P N 0 a nd P N 63 (M W P 363, 80 a nd 9 p si). T h e meters fo r ra ted p ressu res P N, P N 6 a nd P N 0 (M W P 8, 87 a nd p si) h a v e a mea su ring c h a mb er ma c h ined to th e lo w er p a rt o f th e c a se. A ll c o mp o nents o f th e meters a re ma d e o f w ea r-resista nt ma teria ls. Sev era l ma teria ls a re a v a ila b le fo r th e p a rts w h ic h c o me into c o nta c t w ith th e metered liqu id (see Selec tio n a nd O rd ering d a ta ). T h e mo st su ita b le c o mb ina tio n c a n b e selec ted ta k ing into a c c o u nt th e c o rro sio n resista nc e w ith resp ec t to th e liqu id to b e mea su red a s w ell a s th e ru nning c h a ra c teristic s a nd th e p ermissib le temp era tu res; th e su mma ry o n a id s selec tio n. /292 Siemens FI

4 Function and Design R o ta ry -p isto n meter w ith mechanical display, w ithout pulse and current output R o ta ry -p isto n meter w ith pulse and current output and digital display Siemens FI /293

5 SITRANS F flowmeters Config uration Configuration P lanning a liquid m etering system W h en p la nning a liqu id metering sy stem, it is first nec essa ry to c la rify th e o p era tio na l a nd mea su ring requ irements: P u rp o se o f th e sy stem, e.g. p la nt su p erv isio n, c lo sed -lo o p o r o p en-lo o p p ro c ess c o ntro l o r metering fo r a c c o u nting p u rp o ses D esig na tio n, c o mp o sitio n a nd v isc o sity o f th e metered liqu id ; flo w ra te, o p era ting p ressu re a nd temp era tu re M inimu m a nd ma x imu m qu a ntities to b e mea su red D ista nc es b etw een sto ra g e ta nk, metering p o int a nd qu a ntity limita tio n p o int. Intend ed u se o f th e sy stem T h is d etermines th e o p era ting mo d e, w h ic h c a n b e c o ntinu o u s o r intermittent. C o ntinu o u s o p era tio n T h e c o nsu mp tio n o f th e mea su red liqu id d ep end s o n th e p la nt d ema nd. A n ex a mp le is th e metering o f th e o il flo w to a firing p la nt. T h e d ec isiv e fa c to r is th a t a sp ec ific h ea ting p o w er is p ro d u c ed. T h e mea su red v a lu es a re u sed fo r p la nt su p erv i- sio n o r a s a sla v e v a ria b le in a c lo sed -lo o p c o ntro l sy stem. Intermittent o p era tio n U p to h d a ily o r 00 h /y ea r, th e qu a ntity to b e mea su red is o ften fix ed in a d v a nc e; w ith metering fo r a c c o u nting p u r- p o ses, fo r ex a mp le, a c c o rd ing to th e c a p a c ity o f th e tra nsp o rt ta nk ; in p ro c ess eng ineering fo r ex a mp le in th e a p p o rtio ning o f so lv ents fo r p a int ma nu fa c tu re a c c o rd ing to a rec ip e. T h e mea su rement th u s d etermines th e sequ enc e o f th e p ro c ess. T h e ty p e o f v o lu metric meter to b e u sed a nd th e d esig n o f th e mea su ring sy stem a lso d ep end s o n th e intend ed u se. T h e ty p e a nd siz e o f th e v o lu metric meter mu st a lso b e c la rified b efo re p la nning b eg ins. T h eir fu nd a menta l rela tio nsh ip s w ith th e sy stem d esig n w ill b e d ea lt w ith in mo re d eta il b elo w. A lth o u g h th e nu meric a l ra ng es mu st b e g rea ter in sy stems fo r c o ntinu o u s mea su rements, th e reg isters fo r th is mo d e o f o p era - tio n c a n b e simp ler. T h e sy stem d esig n a lso b ec o mes mu c h simp ler fo r c o ntinu o u s o p era tio n. Fo r ex a mp le, th ere is no need to c o nsid er th e p ro b - lems o f qu a ntity limita tio n a s in th e c a se o f intermittent o p era tio n. In th e la tter ty p e o f sy stems, th e relia b le sep a ra tio n o f th e liqu id rema ining in th e metering sy stem fro m th e metered qu a ntity - th e qu a ntity limita tio n - is o ne o f th e mo st imp o rta nt c o nd itio ns fo r th e a c c u ra c y o f th e sy stem. T h e d ista nc es b etw een sto ra g e ta nk s, metering p o int a nd qu a n- tity limita tio n p o int T h e d ista nc es a re mo stly d etermined b y fix ed lo c a l c o nd itio ns. In th is c a se it is o ften nec essa ry to find a mea ns o f rea c h ing a p ra c tic a l c o mp ro mise b etw een sy stem eng ineering a nd o p era - tio na l nec essities. D esign of a liquid m etering system A liqu id metering sy stem c a n c o nsist o f: Filters G a s sep a ra to rs Vo lu metric meter L ik e th e filter a nd g a s sep a ra to r, th e meter sh o u ld a lso b e insta lled in th e p ip e su c h th a t it a lw a y s rema ins filled w ith liqu id. E rro rs in mea su rement a nd c o rro sio n d u e to th e ing ress o f a ir a re a v o id ed in th is ma nner. R o ta ry -p isto n meters T h ese v o lu metric meters c o nsist o f a metering mec h a nism a nd a reg ister c o mb ined into o ne u nit. T h e reg ister is selec ted a c c o rd ing to th e fo rms in w h ic h th e mea su red v a lu es a re to b e p resented. A ny a c c esso ries u sed d ep end o n th e intend ed u se o f th e metering sy stem. M etering mec h a nism W h en d etermining th e ra ted siz e o f th e meter, th e flo w ra te requ ired fo r th e o p era tio n o f th e sy stem, th e v isc o sity o f th e metered liqu id a nd th e p ermissib le p ressu re lo ss in th e meter a re d ec isiv e fa c to rs. T h ese th ree v a lu es d ep end o n o ne a no th er. T h ey mu st b e ta k en into a c c o u nt jo intly w h en selec ting th e ra ted siz e o f th e meter a nd a d a p ted to o ne a no th er if nec essa ry. It is no t nec essa ry to c o nsid er th e ra ted siz e o f th e insta lled p ip e d u ring th is d etermina tio n. T h e d ec isiv e fa c to rs fo r th e c h o ic e o f ma teria ls a re th e na tu re a nd temp era tu re o f th e liqu id. R eg isters D ia ls, d ru m-ty p e c o u nters (w ith o r w ith o u t tic k et p rinters) a nd qu a ntity p reset reg isters a re a v a ila b le a s reg isters. T h ey c a n b e c o mb ined w ith a ll metering mec h a nisms (ex c ep t sma ll meters fo r minera l o ils). Fo r d eta iled d esc rip tio ns a nd T ec h nic a l sp ec ific a tio ns see p a g e /336. Sp ec ia l ty p es a re a v a ila b le in a d d itio n to th ese reg isters. T h ese a lw a y s c o nstitu te fix ed meter d esig n w ith p a rtic u la r metering mec h a nism, e.g. p isto l-g rip meter fo r lu b ric a ting o ils a nd o th er liqu id s. A c c esso ries T h e no rma l ra ng e o f th e ro ta ry -p isto n meters c a n b e ex tend ed u sing a c c esso ries. E x a mp le o f a c c esso ries a v a ila b le: - E lec tric a l tra nsmitters fo r remo te metering, - E lec tric a l a nd elec tro nic instru ments fo r flo w mea su rements - T h erma l insu la tio n a tta c h ments. A ll th e meters, d isp la y s a nd a c c esso ries a re d esig ned o n a mo d u la r b a sis, a nd th erefo re a ll h a v e th e sa me c o nnec ting fla ng es. Sh u t-o ff d ev ic e T h e flo w o f liqu id is interru p ted u sing th is d ev ic e - v a lv e, g a te, ta p, etc. - w h en th e intend ed qu a ntity h a s b een d eliv ered. In o rd er to p rev ent h a rmfu l p ressu re su rg es (w a ter h a mmer) a nd la rg e o v ersh o o t qu a ntities, th e flo w sh o u ld b e th ro ttled c o ntinu - o u sly o r in sev era l sta g es b efo re th e fina l sh u t-o ff. O u r qu a ntity p reset reg ister w ith mec h a nic a l sh u t-o ff v a lv e o p era tes w ith fo u r sh u t-o ff sta g es (c f. p a g e /336). T h e v o lu me setting d ev ic e c a n a lso b e u sed to c o ntro l sep a - ra tely insta lled p neu ma tic o r elec tric sh u t-o ff v a lv es u sing p neu - ma tic o r elec tric senso rs o n th e v o lu me setting d ev ic e. Q u a ntity limita tio n W h en th e metered liqu id h a s flo w ed th ro u g h th e metering sy s- tem, it p a sses eith er into th e p ro c ess p la nt o r into a v essel fo r fu r- th er tra nsp o rt. T h e tra nsitio n p o int fro m th e metering sy stem is sig nific a nt fro m a mea su ring v iew p o int a nd is referred to a s th e qu a ntity limita tio n. If ex a c t mea su rements a re to b e a c h iev ed, th e metering sy stem - fro m th e g a s sep a ra to r to th e qu a ntity limita tio n - mu st a lw a y s b e filled w ith mea su rement ma teria l. A d ifferentia tio n is ma d e b etw een tw o mo d es o f o p era tio n d ep end ing o n th e lo c a tio n o f th e qu a ntity p reset limita tio n: emp ty -h o se insta lla tio ns o r sy stems a nd filled -h o se insta lla tio ns o r sy stems. Minim um delivery quantity and value per revolution W h en p la nning sy stems fo r b a tc h o p era tio ns it is imp o rta nt to ta k e a c c o u nt o f th e minimu m d eliv ery qu a ntity w h ic h c a n b e mea su red a nd ind ic a ted w ith insu ffic ient a c c u ra c y b y th e selec ted reg ister. T h e reg u la tio ns fo r metering sy stems fo r c u sto d y tra nsfer c a n serv e a s a g u id eline: The minimum delivery quantity is the smallest quantity which can be measured in one operation with permissible error limit. It is a lso d ep end ent o n th e v a lu e p er rev o lu tio n o f th e fa stest element o f th e reg ister. T h e v a lu e p er rev o lu tio n c o rresp o nd s to th a t qu a ntity w h ic h is ind ic a ted b y a fu ll rev o lu tio n o f th is element (p o inter o r d ru m). /29 Siemens FI

6 Config uration T h e minimu m d eliv ery qu a ntities g enera lly h a v e th e fo llo w ing rela tio nsh ip s to th e v a lu es p er rev o lu tio n: fo r p o inter d ia l ty p e 0: x v a lu e p er rev o lu tio n. fo r a ll o th er p o inter d ia ls: 0. x v a lu e p er rev o lu tio n fo r a ll d ru m-ty p e c o u nters: x v a lu e p er rev o lu tio n. C erta in v a lu es p er rev o lu tio n o r c erta in v a lu es o f th e minimu m d eliv ery qu a ntity a re a ssig ned to ea c h ra ted siz e o f th e ind iv id - u a l meter ty p es. T h ese v a lu es h a v e b een selec ted su c h th a t th ey a lmo st a lw a y s rep resent th e b est so lu tio ns to th e metering p ro b - lems. Sh o u ld it b e fo u nd d u ring th e p la nning o f a sy stem th a t th e minimu m d eliv ery qu a ntity a tta ina b le w ith th e v a lu e p er rev o lu - tio n sta ted in th e c a ta lo g u e d o es no t c o rresp o nd to th e o p era - tio na l requ irements, p lea se c o nta c t u s. V iscosity, density Visc o sity in th e C G S a nd SI sy stems Visc o sity is a mea su re o f th e interna l fric tio n o f a liqu id. A d ifferentia tio n is ma d e b etw een d y na mic a nd k inema tic v isc o sity. D y - na mic v isc o sity is th e d ec isiv e fa c to r fo r th e u se o f v o lu metric meters. C o mmo n v isc o meters g enera lly d etermine th e k inema tic v isc o sity. T h e d y na mic v isc o sity c a n b e c a lc u la ted fro m it a s fo l- lo w s: Dynamic viscosity = kinematic viscosity x density mp a s = mm²/s x g /c m³ C o nv entio na l v isc o sity u nits In p ra c tic e, c a lc u la tio ns w ere frequ ently c a rried o u t w ith c o m- mo n eng ineering u nits b a sed o n th e flo w times o f liqu id s fro m sta nd a rd o rific es. T h e mo st c o mmo n u nits o f th is k ind w ere in G erma ny E ng ler-g ra d e E in G rea t B rita in R ed w o o d -sec o nd s R in th e U SA Sa y b o lt-sec o nd s S In fig u re Fig. C o nv ersio n into c o mmo n eng ineering u nits sh o w s th ese c o mmo n u nits in c o mp a riso n w ith mm 2 /s v a lu es o f th e k inema tic v isc o sity o f th e C G S sy stem. Note: The temperature to w hich the value refers must be specified w ith each viscosity value. C o nv ersio n o f th e k inema tic v isc o sity -u nit mm 2 /s into o th er u nits C o nv ersio n o f th e k inema tic v isc o sity into c o mmo n eng ineering u nits, w a - ter a t 7 C (68.2 F) h a s a d y na mic v isc o sity h =.09 mp a s (c p ) Siemens FI /29

7 Config uration 0,3 (.) bar (psi) DN 2 ( ) DN 0 (2 ) DN 80 (3 ) 0,2 (2.9) 0, (.) (3) 300 (79) 00 (07) 00 (32) q in l/min (q in USgpm) 600 (9) 700 (8) 800 (2) 900 (238) 0 P ressu re lo ss p fo r liqu id g a s w ith 0.2 mp a s (c p ), a p p ro x. 6 C (60.8 F) a nd P N 6 (M W P 232 p si) (v a lu es fo r liqu id g a s a u th o riz ed b y th e G erma n c a lib ra tio n a u th o rities:, 00 a nd 800 I/min (26., 06 a nd 2 U Sg p m)) C o nv ersio n o f th e d ensity u nit g /c m 3 into o th er u nits P ressure loss P ressu re lo ss d ep end ing o n th e flo w a nd v isc o sity o f th e mea su red liqu id in a ro ta ry -p isto n meter D N (½ ) O p era ting ra ng es fo r ro ta ry -p isto n meters D N 2 ( ), 0 (2 ) a nd 80 (3 ); p ressu re lo ss d ep end ing o n th e flo w a nd v isc o sity o f th e mea su red liqu id. Notes T h e fo llo w ing limita tio n a p p lies to th e a u to ma tic b a tc h meter b e- c a u se o f th e h ig h er flo w resista nc e th ro u g h th e a sso c ia ted sh u t- o ff v a lv e: w ith th e sa me q, p is inc rea sed b y a p p ro x. 30% ; w ith th e sa me p, q is red u c ed b y a p p ro x. 20%. mp a s = c p /296 Siemens FI

8 R ecom m ended m aterials for rotary-piston m eters and autom atic batchm eters Sev era l ma teria ls a re a v a ila b le fo r th e ro ta ry -p isto n meters fro m p a g e /30 o f th is c a ta lo g fo r th e p a rts w h ic h c o me into c o nta c t w ith metered liqu id. T h ese ma teria ls mu st b e c o mb ined w ith d u e reg a rd to th e c o rro sio n resista nc e a g a inst th e metered liqu id. T h e fo llo w ing su mma ry sh o w s c o mb ina tio ns o f ma teria ls fo r a nu mb er o f liqu id s. SITRANS F flowmeters Configuration - Recommended materials In o rd er to k eep th e su mma ry a s simp le a s p o ssib le, o nly th e minimu m v ersio n is listed in ea c h c a se. H o w ev er, h ig h er qu a lity ma teria ls c a n a lso b e u sed fo r metered liqu id s. If th is is requ ired b y th e c u sto mer, e.g. fo r mu ltip u rp o se u se o f th e meter, p lea se inqu ire in c a se o f d o u b t. T h e d a ta is b a sed fo r th e g rea test p a rt o n o u r ma ny y ea rs o f ex - p erienc e. B ec a u se o f th e c o mp lex ity o f th e c o rro sio n p ro b lem, h o w ev er, th e d a ta sh o u ld o nly b e c o nsid ered a s rec o mmend a - tio ns. It d o es no t c o nstitu te a g u a ra ntee. Restrictions of the application range for the recommended materials imposed by the casing gasket R o ta ry -p isto n meter C a sing g a sk et P ermissib le temp era tu re ra ng e O rd er N o. N o mina l siz e (D IN ) ) T h e fla ng es a re d rilled a c c o rd ing to A N SI B 6.. T h e p ressu re d a ta a c c o rd ing to D IN a re ma x imu m p ermissib le p ressu res u p to a p p ro x. C (22 F). T h e ma x imu m p ermissib le p ressu re is red u c ed a t h ig h er temp era tu res. W h en o rd ering, th e d a ta o f th e A N SI p ressu re c la ssific a tio n mu st b e sp ec ified in p la in tex t. 2) A FM 3: A ra mid e fib ers w ith ino rg a nic fillers a nd sy nth etic ela sto mers 3) FP M : Flu o rine ru b b er (Vito n) R a ted p ressu re (D IN ) N o mina l siz e (A SM E ) A SM E B 6. ) T y p e M a teria l C F 7 M R 020 D N P N 2 (½ ) ( ) Fla t g a sk et A FM 3 2) , u p to M R 030 P N 0 fo r sh o rt time 7 M R 0 D N 2 P N 0/P N 6 ( ) (0) 7 M R 20 P N 2 ( ) 7 M R 0 P N 63 ( ) 7 M R 0 D N 0 P N 6/P N 0 (2 ) (0) 7 M R 20 P N 2 ( ) 7 M R 0 P N 63 ( ) 7 M R 60 D N 80 P N /P N 6 (3 ) (0) 7 M R 620 P N 2 ( ) 7 M R 60 P N 63 ( ) ) FE P -FP M : Flu o rine ru b b er (FE P -Vito n), w ith tetra flu o ro eth y lene-h ex a flu o ro p ro p y lene imp o sed b y th e c a sing g a sk et (... 82, u p to 7 2 fo r sh o rt time) 7 M R 30 D N 2 P N 0 ( ) ( ) O -R ing FP M 3) ( 00) 7 M R 30 O -R ing FE P -FP M ) ( 39 2) 7 M R 30 D N 0 P N 0 (2 ) ( ) O -R ing FP M 3) ( 00) 7 M R 30 O -R ing FE P -FP M ) ( 39 2) 7 M R 630 D N 80 P N 0 (3 ) ( ) O -R ing FP M 3) ( 00) 7 M R 630 O -R ing FE P -FP M ) ( 39 2) D irec tio ns fo r u se o f th e fo llo w ing su mma ry. T h e rec o mmend ed ma teria l c o mb ina tio ns a re ma rk ed w ith. If sev era l ma teria ls a re listed fo r o ne metered liqu id, th ese a re a l- terna tiv es fo r th e c a sing a nd th e mea su ring c h a mb ers sinc e p o ssib le limita tio ns a p p ly to th e minimu m v ersio n (see fo o t- no tes). In c a se o f sev era l rec o mmend a tio ns fo r ro ta ry -p isto ns, th e ru n- ning c h a ra c teristic s a nd th e p ermissib le temp era tu res h a v e b een ta k en into a c c o u nt. N o p referenc e is ex p ressed, th e c h o ic e sh o u ld b e ma d e a c c o rd ing to th e c u sto mers w ish es. T h e d a ta in th e su mma ry g enera lly a p p lies to a liqu id temp era - tu re o f 20 C (68 F) w ith th e ex c ep tio n o f su b sta nc es w h ic h c a n o nly b e metered, w h en h ea ted, e.g. b itu men o r c o c o a p a ste. T h e su ffix so lu tio n a lw a y s d eno tes a n a qu eo u s so lu tio n. Siemens FI /297

9 Configuration - Recommended materials Medium to be measured Materials Casing and measuring chamber C a st iro n o r c a st steel C rn im o - steel W ith ena mel lining Rotary-piston C a t iro n N i- R esist C a rb o n (sy nth.) H a rd ru b b er to 0 C (0 F) P C T FE to 0 C (0 F) P T FE / G ra p h ite to 9 0 C (9 F) Casing gasket P N /6/0/2 /63 A FM 3 P N 0 FP M FE P - FP M A c eta ld eh y d e A c eto ne ) A c ry lnitrile A lu miniu m su lp h a te so lu tio n Fo rmic a c id A mmo nia so lu tio n D isc o lo ra tio n p o ssib le N o d isc o lo ra tio n A mmo niu m c h lo rid e so lu tio n A my l a c eta te A my l a lc o h o l A niline ) B a riu m c h lo rid e so lu tio n B enz a ld eh y d e ) B enz ene ) B enz o l ) B itu men (h ea t meter) L ea d a c eta te so lu tio n L ea d c h lo rid e so lu tio n B o ric a c id %, 0 C (22 F) B u ta ne ) B u ty ric a c id B u ty l a c eta te ) C a lc iu m c h lo rid e so lu tio n 2) C a p ro la c ta m C ello so lv es ) C h lo rb enz ene (a nh y d ro u s) ) C h lo ro fo rm C h o line c h lo rid e so lu tio n C h ro miu m su lfa p h. so lu tio n < 0 C (22 F) C y c lo h ex a no l (A no l) ) ) D ia c eto ne a lc o h o l ) D ib u ty lp h th a la te D iesel o il D imeth y la niline Ferric c h lo rid e so lu tio n A c etis a c id E th y l a c eta te ) E th y la lk o h o l (E th a no l) ) E th y l a mine E th y lene c h lo rid e d ry E th y lee ng ly c o l a nh y d ro u s ) Fa tty a c id L iqu efield g a s ) L iqu efield w a x Fo rma lin Freo n ) Fu rfu ro l G lu c o se so lu tio n G ly sa ntine ) ) G ly c erine p u r c ru d e U rea so lu tio n (a qu eo u s) Fu el o il, h ea v y H y d ra u lic o il C o c o a b u tter C o c o a p a ste (h ea ted ) C a u stic p o ta sh so lu tio n ) P o ta ssiu m b ic h ro ma te so lu tio n P o ta ssiu m c h lo rid e so lu tio n 2) M a g nesiu m c h lo rid e so lu tio n 2) /298 Siemens FI

10 Configuration - Recommended materials Medium to be measured Materials Casing and measuring chamber C a st iro n o r c a st steel C rn im o - steel W ith ena mel lining M a lt M a su t M o la sses (a lk a line) M o la sses (a c id ) M eth a no l (meth y l a lc o h o l) )3) M eth y l c h lo rid e 3) 3) 6) M eth y lene c h lo rid e N a p h ta lene So d iu m a c eta te so lu tio n So d iu m c h lo rid e so lu tio n (a lk a line) So d iu m c h lo rid e so lu tio n (b a sic ) So d iu m nitrite so lu tio n C a u stic so d a e. g. 30%, 20 C (68 F) e. g. 0%, 0 C (22 F) N itro b enz ene ) O leu m 0%, % P a ra ffin o il P ermu tite p ro c ess w a ter P etro leu m Veg a ta b le o il N eu tra liz ed C ru d e P h eno l P h o sp h o ric a c id 7 ) 6)7 ) P h o sp h o ro u s tric lo rid e 6) C a sto r o il So o t o il N itric a c id ma x. 6%, 0 C (0 F) H y d ro c h lo ric a c id C h o c o la te c o mp o u nd Su lfu r (liqu id ) C a rb o n b isu lfid e ) Su lfu ric a c id T o 80%, ma x. 80 C (7 6 F) 80 to 8%, ma x. 0 C (0 F) 86 to 9 7 %, ma x. 2 C (7 7 F) 9 8 to %, ma x. 0 C (22 F) Sea w a ter 2) So a p (L iqu id ) So a p so lu tio n Silic iu m tetra c h lo rid e 2) Sta rc h so lu tio n C a rb o n tetra c h lo rid e ) 2) T o lu ene ) T ra nsfo rmer o il T ric h lo reth y lene 2) Viny l c h lo rid e W a ter, d eminera liz ed H y d ro g en p ero x id e 8) P la stic iz er W ine X y lene ) Z inc c h lo rid e so lu tio n 2) Su g a r so lu tio n Su g a r sy ru p ) W ith metered liqu id s w ith a stro ng d eg rea sing a c tio n, ru st c a n o c c u r. 2) P itting ma y o c c u r 3) B u ta ne, p ro p a ne, p ro p y lene ) N o t resista nt fo r freo n 2, 22, 3, 32 ) R esista nt < 30% 6) D u ro p la st/t a nta lu m d esig n l 7 ) W ith o u t a d d itio n o f c h lo rine a nd flu o rine Rotary-piston C a t iro n N i- R esist C a rb o n (sy nth.) H a rd ru b b er to 0 C (0 F) 8) T o b e p ic k led a nd p a ssiv a ted P C T FE to 0 C (0 F) P T FE / G ra p h ite to 9 0 C (9 F) Casing gasket P N /6/0/2 /63 A FM 3 P N 0 FP M FE P - FP M Siemens FI /299

11 SITRANS F flowmeters Configuration - Heating systems H eating system s L iqu id s w ith a lo w so lid ific a tio n temp era tu re a nd th o se w h ic h b e- c o me v ery v isc o u s o r ev en set into a so lid a g g reg a te a t no rma l temp era tu res mu st b e h ea ted if th ey a re to b e tra nsferred th ro u g h p ip es. T h e metering mec h a nism mu st b e h ea ted so th a t h ea ted flu id s su c h a s h ea v y fu el o il, ta r, b itu men, mo lten su lfu r, c h o c o la te c o mp o u nd etc. d o no t c o o l d o w n in th e meter. T h ere a re sev era l w a y s o f d o ing th is: H ea ting th ro u g h h ea ter c o il in lo w er p a rt o f c a se R o ta ry -p isto n meter D N 0/P N 63 (2 /M W P 9 p si) w ith h ea ting sy stem T h e h ea ting d ev ic e c o nsists o f a sp ira l tu b e o r c h a mb er a r- ra ng ed b elo w th e mea su ring c h a mb er a nd h ea ted b y w a ter, o il o r stea m. T h e h ea ting d ev ic e is p ro v id ed fo r meters D N 2, D N 0 a nd D N 80 (P N 2 a nd P N 63) (, 2 a nd 3 (M W P 363 a nd 9 p si)). T h e no mina l w id th D N (½ ) h a s o nly 2 th rea d c o nnec tio ns fo r a ny h ea t inlet (see p a g e /38). T h is ty p e o f h ea ting o nly ensu res th a t th e liqu id p h a se w ill b e ma inta ined th ro u g h o u t th e w h o le mec h a nism if a h ea ting ra te is u sed - a nd th is is no t to lera ted b y ev ery liqu id. H ea ting th ro u g h ex terna l h ea ter tu b es o r elec tric h ea ter c a b le Note In ma ny c a ses, th e h ea t tra nsfer fro m th e ex isting p ip e h ea ting is su ffic ient to ma inta in th e liqu id p h a se in th e metering mec h a - nism if th e mec h a nism is a d equ a tely insu la ted. D efinitions Flo w ra te q min is th e sma llest flo w ra te w h ic h mu st b e p resent if rea d ing s w ith in th e sta ted to lera nc e a re to b e o b ta ined u nd er th e g iv en o p era ting c o nd itio ns. T h e q min v a lu e p rima rily d ep end s o n th e v isc o sity o f th e liqu id. A ttentio n mu st a lso b e p a id to th e w eig h t a nd ma teria l ru nning c h a ra c teristic s o f th e mo v ing p a rts o f th e metering mec h a nism. D a ta o n q min a s a fu nc tio n o f th e a b o v e mentio ned fa c to rs a re listed in th e tec h nic a l sp ec ific a tio ns o f th e resp ec tiv e mec h a - nism. q ma x is limited b y T h e ma x imu m p ermissib le sp eed w h ic h c a n b e ex p ec ted o f th e mo v ing p a rts o f th e mec h a nism (ro ta ry p isto n) w ith o u t th e life (lo ng -term a c c u ra c y ) o f th e meter b eing sh o rtened to a n u na c c ep ta b le ex tent. Fo r th is rea so n, th e p ermissib le q ma x v a lu e fo r c o ntinu o u s o p era tio n is restric ted to a p p ro x. h a lf o f th e q ma x fo r b a tc h o p era tio n (a p p ro x. 00 h /y ea r). T h e p ressu re lo ss, i.e. th e p ressu re d ifferenc e o c c u rring in th e mec h a nism th ro u g h h y d ra u lic lo sses. A ma x imu m v a lu e o f 3 b a r (3. p si) is p ermissib le. T h is v a lu e is o nly rea c h ed w ith v ery h ig h v isc o sities a nd la rg e flo w ra tes. T h e meter siz e a nd th e v isc o sity o f th e liqu id a re d ec isiv e fa c to rs fo r th e a c tu a l p ressu re lo ss w h ic h o c c u rs. Va lu es fo r q ma x c o nt. a nd q ma x b a tc h (d ep end ent o n v isc o sity ) a re listed in th e tec h nic a l sp ec ific a tio ns. T h eo ry o f th e erro r c u rv e fo r v o lu metric meters O n th e b a sis o f th e G erma n Sta nd a rd s a nd W eig h ts a nd M ea - su res R eg u la tio ns (a lso E C a nd O IM L rec o mmend a tio ns), th e mea su ring erro r in v o lu metric meters, i.e. th e d ifferenc e b etw een th e reg istered qu a ntity (A, a c tu a l rea d ing ) a nd th e a c tu a l qu a n- tity (N, c o rrec t v a lu e) is d efined a s fo llo w s: a p o sitiv e erro r mea ns a n ind ic a tio n w h ic h is to o la rg e, a neg a tiv e erro r a n ind i- c a tio n w h ic h is to o sma ll, c o mp a red to th e a c tu a l qu a ntity (N ). T o c a lc u la te th e p erc enta g e erro r, th e fo llo w ing a p p lies: f = (A - N )/N in % o f th e c o rrec t v a lu e T h e p rima ry c a u se o f mea su ring erro rs is th e g a p lo ss w h ic h c a nno t b e c o mp letely a v o id ed d esp ite th e h ig h est ma nu fa c tu r- ing p rec isio n fo r th e p a rts o f th e mec h a nism - a flo w w h ic h d o es no t p ro d u c e a c o rresp o nd ing ro ta ry mo v ement in th e mec h a - nism a nd is th u s no t rec o rd ed. R o ta ry -p isto n meter w ith h ea ting th ro u g h ex terna l h ea ting tu b es T h is ty p e p ermits th e b est p o ssib le d istrib u tio n a nd reg u la tio n o f th e nec essa ry h ea t. In b o th c a ses - w h eth er stea m o r o il-h ea ted tu b e o r elec tric h ea ter c a b les a re u sed - th e h ea ting su rfa c e a nd th u s th e h ea t tra nsfer is c o nsid era b ly inc rea sed b y th e u se o f th erma lly c o n- d u c ting p a ste. T h e c o mp lete metering mec h a nism mu st b e insu - la ted o n th e o u tsid e. D isma ntling o f th e metering mec h a nism is nev erth eless p o ssib le u sing d eta c h a b le c o nnec tio ns to th e h ea ting c irc u its (see p a g e /38). D ia g ra m to illu stra te th e th eo ry o f th e erro r c u rv e fo r v o lu metric meters If it is a ssu med th a t o th er ex terna l influ enc es, e.g. g a s inc lu sio ns in th e liqu id to b e mea su red, a re elimina ted b y a p p ro p ria te mea - su res, th e fo llo w ing simp lified sta tement c a n b e ma d e o n th e fo rm o f th e erro r c u rv e: G a p lo sses a lw a y s lea d to neg a tiv e erro rs (p o sitiv e d eliv ery erro r c o rresp o nd s to a neg a tiv e ind ic a tio n erro r). /300 Siemens FI

12 T h e to ta l g a p lo ss is ma d e u p o f tw o c o mp o nents: A c o mp o nent w ith a h y p erb o lic fu nc tio n w h ic h resu lts fro m th e v a ry ing influ enc e o f mec h a nic a l fric tio n (th is influ enc e d e- c rea ses w ith inc rea sing flo w ra te a fter th e fric tio n a t rest h a s b een o v erc o me) a nd A lo ss c o mp o nent w h ic h inc rea ses linea rly w ith th e flo w ra te a nd is d u e to th e inc rea sing flo w resista nc e a nd th u s th e h ig h er p ressu re d ifferenc e in th e mec h a nism. T h e to ta l c u rv e c a n b e fo rmed fro m th ese tw o effec ts. It is c h a r- a c teristic fo r a ll p o sitiv e d isp la c ement meters. T h e illu stra tio n E rro r c u rv es o f v o lu metric meters is g rea tly enla rg ed to simp lify u nd ersta nd ing. E rro r c u rv es o f ro ta ry -p isto n meters T h e sh a p e o f th e erro r c u rv e is a lso a ffec ted b y th e v isc o sity o f th e metered liqu id. T h e erro r in mea su rement inc rea ses w ith d e- c rea sing v isc o sity, esp ec ia lly a t th e b eg inning a nd to w a rd s th e end o f th e flo w ra te ra ng e. B y a p p ro p ria te reg u la tio n, i.e. c h a ng ing a p a ir o f g ea r-w h eels b etw een th e meter mec h a nism a nd th e reg ister, th e p o sitio n o f th e erro r c u rv e c a n b e d isp la c ed p a ra llel to th e z ero line a nd th u s th e meter c a n b e o p tima lly c a lib ra ted. T h e a p p ro p ria te p a ir o f rep la c ement g ea rs c a n b e rea d o ff fro m a ta b le o r d etermined w ith th e a id o f a c a lc u la ting d isk. T h e illu stra tio n E rro r c u rv es o f v o lu metric meters sh o w s erro r c u rv es w ith o u t a ny reg u la tio n h a v ing b een c a rried o u t. SITRANS F flowmeters Note: T h e mea su ring sy stem o f th e ro ta ry -p isto n meter mu st a l- w a y s b e filled w ith th e liqu id to b e mea su red in o rd er to a c h iev e a h ig h mea su ring a c c u ra c y. S ervice life (long-term accuracy) T h e serv ic e life o f a v o lu metric meter, i.e. th e o p era ting time u ntil a n o v erh a u l o r rec a lib ra tio n b ec o mes nec essa ry, is d etermined b y th e mec h a nic a l a b ra sio n o f th e mo v ing p a rts o f th e mec h a - nisms w h ic h o c c u rs b ec a u se o f fo rc es fro m th e metered liqu id. A s w ell a s th e na tu re o f th e ma teria ls u sed (ru nning c h a ra c teristic s), th e serv ic e life is d ep end ent o n th e lu b ric a ting p ro p erties o f th e metered liqu id, th e serv ic e is d ep end ent o n th e lu b ric a ting p ro p erties o f th e metered liqu id, th e d a ily o p era ting time a nd th e c u b e o f th e flo w ra te (sp eed o f ro ta tio n). T h e la st fa c to r is o ne o f th e rea so ns w h y o nly h a lf o f th e ma x imu m flo w ra te sp ec ified fo r th e b a tc h o p era tio n is p ermissib le fo r c o ntinu o u s o p era tio n. Sinc e th e a b o v e fa c to rs c a n h a rd ly b e d etermined ex a c tly w ith ind u stria l u se o f th e meter, u nequ iv o c a l sta tements o n th e serv ic e life (lo ng -term a c c u ra c y ) a re no t p o ssib le. R ec a lib ra tio n is requ ired ev ery tw o y ea rs b y la w (in G erma ny ) fo r meters u sed fo r c u sto d y tra nsfer. O n th e b a sis o f th is reg u la tio n, it is rec o mmend ed th a t meters w h ic h a re no t u sed fo r c u sto d y tra nsfer b e c h ec k ed a nd rec a lib ra ted if nec essa ry, a t interv a ls o f tw o to th ree y ea rs. E v en th is rec o mmend a tio n is b a sed o n a v era g e, no rma l o p era ting c o nd itio ns. A p erio d o f th ree y ea rs is to o sh o rt, fo r ex a mp le, fo r a meter u sed fo r th e b a tc h d isp ensing o f lu b ric a ting o il, it w ill still w o rk w ith in th e sta ted erro r limits ev en a fter fiv e y ea rs o r mo re E rror in correct value % 0, 0-0, % mp a s mp a s mp a s 0, mp a s 0,2mP a s M eas. range : (w ith liquid gas) M easuring range : % Flow rate q max E xamples of rotary-piston meters DN 2 ( ) and DN 0 (2 ) E rro r c u rv es o f v o lu metric meters d ep end ent in sh a p e a nd lo c a tio n o n th e flo w ra te a nd th e v isc o sity o f th e liqu id Note: mp a s = c p Measuring accuracy T h e ro ta ry -p isto n meters a re a p p ro v ed in th e E u ro p ea n C o mmu - nity a nd in ma ny o th er c o u ntries fo r th e c u sto d y tra nsfer. T h e fo llo w ing erro r limits a p p ly b etw een 0.2% a nd 0.% o f th e c o rrec t v a lu e (d ep end ing o n th e liqu id, th e mea su ring ra ng e a nd th e relev a nt c a lib ra tio n sp ec ific a tio ns). T h e sta ted erro r limits in % o f th e c o rrec t v a lu e a p p ly to th e w h o le flo w ra te a nd fo r a ny d eliv ery qu a ntity g rea ter th a n th e sma llest p ermissib le qu a ntity. T h is is a n imp o rta nt d ifferenc e c o mp a red to o th er mea su ring instru ments w h o se erro rs a re rela ted to th e fu ll-sc a le v a lu e a nd th u s o nly rea c h th e sta ted a c c u ra c y a t o ne p o int - fu ll-sc a le d e- flec tio n. T h e minimu m flo w ra te sh o u ld no t fa ll b elo w 0% o f th e ma x imu m flo w ra te in o rd er to rema in w ith in th e sta ted a c c u ra c y limit. T h is ex p la ins w h y th e u su a l flo w ra te ra ng e fo r v o lu metric meters is :0. Siemens FI /30

13 Tech nical specifications Technical specifications Meter sizes (DN), pressure stages (P N) and permissible flow rates (q) for rotary-piston meters and automatic batchmeters D esig n D N P N R a ted flo w ra te P ermissib le flo w ra te R o ta ty -p isto n meter fo r ind u stria l u se W ith v isc o sity mm (inc h ) b a r (p si) l/min (U Sg p m) mp a s (c p ) ) (½ ) ) () (2) 6 0 8) (3) 6 8) R o ta ry -p isto n meter a c id -resista nt mo d e (363) (80) () (232) (363) (80) (9 ) (87 ) () 8) (363) (80) (9 ) (8) (87 ) 8) (363) (80) (9 ) 20 (.3) < ) (26.) 0,3 0, ) 00 (32) 0,3 0, ,3 0, ) 2 () 0 () (26.) 0,6 M in. ) w ith c o ntinu - o u s 2) o p era tio n M a x. w ith intermittent 3)) o p era tio n M a x. w ith c o ntinu o u s 8) o p era tio n l/min (U Sg p m) l/min (U Sg p m) l/min (U Sg p m),,0 0,2 0,2 0,2 0, (0.2) (0.0) (0.03) (0.03) (0.03) (3.2) (.6) (.3) (0.8) () (.3) (.8) (0.3) (0.3) (0.3) (0.3) (6) (9.3) (6.6) (.3) (.3) (.3) (.3) (2.) (.0) 0 6) (.3) (.3) (.3) (.3) (0.3) (3) (.3) (06) (32) (32) (32) (06) (3) (2) () (2) (2) (9 3) (0) (20) (.3) (0.3) (3) (3) (3) (3) (3) (3) (.3) () () () () () () (2) () (9 3) (9 3) (9 3) (9 3) (9 3) (9 3) (0) (20) (3) (3) (3) A u to ma tic b a tc h meter (R o ta ry -p isto n meter w ith qu a ntity p reset reg ister a nd mec h a nic a l sh u t-o ff v a lv e) 2 () 0 () (26.) 0,3 0, ) (3.2) (.6) (.3) (0.8) 0 (2) 6 0 8) (87 ) () 8) ,3 0, ) () (.3) (.8) (0.3) (06) (32) (32) (32) (06) ) Fo r meta l ro ta ry -p isto ns: inc rea se b y a fa c to r o f 2, fo r P C T FE a nd P T FE /g ra p h ite filling ro ta ry -p isto ns: inc rea se b y a fa c to r o f 3. 2) C o ntinu o u s o p era tio n: u p to 8 h o u rs a d a y. 3) Fo r meta l p isto ns: red u c e b y a fa c to r 0.8 to ex tend serv ic e life. ) Intermittent o p era tio n: u p to h o u rs a d a y ) N o te: W h en u sing p isto ns ma d e o f c a rb o n, th ere is d a ng er o f b rea k in th e c a se o f liqu id h a mmers 6) W h en u sing p isto ns ma d e o f c a rb o n. 7 ) Flo w ra tes fo r h ig h er v isc o sities o n requ est; w e h a v e ex p erienc e o f u p to mp a s (c p ). 8) Va lu es in b ra c k ets a p p ly to c a sing in C rn im o steel. 9 ) M a x. p ermissib le v isc o sity fo r ex a c t c lo sing o f th e sh u t-o ff v a lv e a nd fo r ex a c t d isp ensing : v isc o sities u p to 000 mp a s (c p ) p o ssib le. Note: In o rd er to ex tend th e serv ic e life o f th e p u lse senso r, ro ta ry -p isto n meters w ith c u rrent a nd /o r p u lse o u tp u t (w ith o u t intermed ia te g ea r) sh o u ld o nly b e o p era ted a t ma x. 60% o f th e p ermissib le flo w. /302 Siemens FI

14 Tech nical specifications P iston m aterials P iston material Design Permissible liquid temperature Max. perm. dyn. viscosity O rder No. code. C F mp a s (c p ) C a rb o n K C a st iro n (ma t. N o. G G 2) C a st iro n (ma t. N o. G G 2) N i-r esist (ma t. N o ) N i-r esist (ma t. N o ) H a rd ru b b er H a rd ru b b er P T FE /g ra p h ite filling P T FE / g ra p h ite filling P T FE / g ra p h ite filling P T FE / g ra p h ite filling P C T FE P C T FE G ni steel w ith c a rb o n c o nta c t su rfa c e (D N 2 ( ) o nly ) G ni steel w ith P T FE c o nta c t su rfa c e (D N 2 ( ) o nly ) w ith slo tting w ith slo tting w ith slo tting w ith slo tting w ith slo tting w ith slo tting )... 0 ) )... 0 ) ) ) ) ) C o lla r p isto n ) ) ) ) ) ) ) ) > 0 > 0 E B N C G D F L R M H J S T ) Fo r 20 min ma x. 6 C (9 F); fo r 20 min ma x. 9 0 C (9 F), e. g. fo r c lea ning p ro c ed u res 2) E rro r limit ma x. % ; a t 9 0 C (9 F) ma x. 2% Further technical specifications Materials and max. permissible liquid temperatures H o u sing (a lso lining w ith a c id resista nt meters) a nd mea su ring c h a m- b er C a st iro n, sp h ero id a l g ra p h ite, c a st steel, C ra niu m steel C a st iro n/ena mel, D u ro p la st mea - su ring c h a mb er General data E rro r limits T emp era tu re ra ng e R ep ro d u c ib ility W ith in 0.0% C ( F) C ( F) B etw een 0.2% a nd 0.% o f th e c o rrec t v a lu e (d ep end ing o n th e metered flu id, th e mea su ring ra ng e a nd th e relev a nt c a lib ra - tio n reg u la tio ns) ex c ep t fo r ro ta ry -p isto n meters D N (½ ) a nd a c id -resista nt meters w ith P C T FE p isto ns; w h ere % o f th e a c tu a l v a lu e a p p lies. A d ju stment In step s fro m 0.0% P ressu re d ro p M a x. p ermissib le 3 b a r (3. p si), ma x. 0. b a r (7.2 p si) fo r a c id resista nt meters T ra nsmissio n fro m w et to d ry sp a c e G la nd -free, v ia p erma nent ma g - net c o u p ling Insta lla tio n p o sitio n (a x is o f meter mec h a nism) R o ta ry -p isto n meter fo r ind u stria l u se - A c id -resista nt mo d el A ny - A u to ma tic b a tc h meter Vertic a l Sp ec ia l d esig ns - R o ta ry -p isto n meter fo r o il fu els A ny - R o ta ry -p isto n meter fo r liqu id g a s M eter a x is v ertic a l Sp ec ia l inlet a nd o u tlet p ip e sec - tio ns N o t nec essa ry P ip e c o nnec tio n Fla ng es d rilled to D IN 20, D IN 27 (P N 63 o nly ) Filter siz e (mesh w id th ) 0.8 mm (0.03 inc h ) fo r ro ta ry - p isto n meter N ote T h e ma teria l c o mb ina tio ns w h ic h c a n b e su p p lied a re listed in th e Selec tio n a nd O rd ering d a ta. T h e ma x imu m p ermissib le liqu id temp era tu re is d etermined b y th e w ea k est link in th e p a rtic u la r c o mb ina tio n (th e P C T FE ro - ta ry -p isto n, fo r ex a mp le, in a meter ma d e o f C ra niu m steel). A u to ma tic b a tc h meter W ith th is meter, th e ma x imu m p ermissib le liqu id temp era tu re is a lso limited b y th e o p era tio n a nd d esig n o f th e sh u t-o ff v a lv e. T h e fo llo w ing temp era tu res a re p ermissib le fo r v a lv es w ith ma intena nc e free G la nd sea l: C ( F) B ello w s sea ls: C, ma x. 3 b a r (... 0 F, ma x. 3. p si) M o d els fo r h ig h er liqu id temp era tu res o n requ est. T h e insta lla - tio n o f c o o ling a tta c h ments a lso nec essita tes a c o rresp o nd ing inc rea se in leng th o f th e mec h a nic a l sh u t-o ff v a lv e. T h e fo llo w ing restric tio n a p p lies to th e a u to ma tic b a tc h meters b ec a u se o f th e h ig h er flo w resista nc e th ro u g h th e a sso c ia ted sh u t-o ff v a lv e: w ith th e sa me v a lu e q, p is inc rea sed b y a p p ro x. 30% w ith th e sa me v a lu e p, q is red u c ed b y a p p ro x. 20% In c a se o f a d y na mic v isc o sity 60 mp a s (c p ), c o nstru c tio na l d e- ta ils o f th e sh u t-o ff v a lv e c o ne mu st b e c h a ng ed. Fu rth ermo re, insta lla tio n o f a filter is o mitted fo r 800 mp a s (c p ) a nd a b o v e. Siemens FI /303