Compteurs de gaz – Compteurs de gaz à déplacement rotatif

Gaszähler – Drehkolbengaszähler

Obsah

Contents

Strana

Page

Evropská předmluva......................................................................................................................................................................... 10

1......... Předmět normy...................................................................................................................................................................... 11

2......... Citované dokumenty............................................................................................................................................................ 12

3......... Termíny, definice, značky a zkratky................................................................................................................................... 18

3.1...... Termíny a definice................................................................................................................................................................ 18

3.2...... Značky a zkratky.................................................................................................................................................................... 21

4......... Pracovní rozsah..................................................................................................................................................................... 22

4.1...... Obecně.................................................................................................................................................................................... 22

4.2...... Rozsah průtoku (shodnost/jednotlivě)............................................................................................................................... 22

4.3...... Pracovní rozsah tlaků (shodnost/jednotlivě).................................................................................................................... 22

4.4...... Pracovní rozsah teplot (shodnost/jednotlivě)................................................................................................................... 22

5......... Metrologické vlastnosti......................................................................................................................................................... 23

5.1...... Obecně.................................................................................................................................................................................... 23

5.2...... Chyba indikace (shodnost/jednotlivě)............................................................................................................................... 23

5.3...... Tlaková ztráta (shodnost/jednotlivě).................................................................................................................................. 24

5.4...... Metrologická opakovatelnost (shodnost).......................................................................................................................... 25

5.5...... Pracovní tlak (shodnost/jednotlivě).................................................................................................................................... 25

5.6...... Rozsahy teplot (shodnost)................................................................................................................................................... 26

5.7...... Kondenzační podmínky okolí (shodnost)......................................................................................................................... 27

5.8...... Obousměrná měřidla (shodnost)....................................................................................................................................... 28

5.9...... Vliv olejové náplně (shodnost)........................................................................................................................................... 28

6......... Návrh a výroba...................................................................................................................................................................... 28

6.1...... Obecně (shodnost/jednotlivě)............................................................................................................................................. 28

6.2...... Materiál................................................................................................................................................................................... 29

6.3...... Pevnost konstrukce............................................................................................................................................................... 33

6.4...... Přeprava a skladování (shodnost/jednotlivě).................................................................................................................. 37

6.5...... Přípojky (shodnost)............................................................................................................................................................... 38

6.6...... Přípojky odběru tlaku a místa měření teploty (shodnost).............................................................................................. 38

6.7...... Výroba..................................................................................................................................................................................... 39

7......... Výstup měřidla....................................................................................................................................................................... 40

7.1...... Počitadlo................................................................................................................................................................................. 40

7.2...... Okénko počitadla.................................................................................................................................................................. 42

7.3...... Výstupní hnací hřídele.......................................................................................................................................................... 43

7.4...... Generátory impulzů.............................................................................................................................................................. 45

8......... Stálost (shodnost)................................................................................................................................................................. 47

8.1...... Požadavky.............................................................................................................................................................................. 47

8.2...... Zkoušky................................................................................................................................................................................... 47

9......... Značení, označování a balení (shodnost/individuálně)................................................................................................. 47

9.1...... Obecně.................................................................................................................................................................................... 47

European foreword............................................................................................................................................................................ 10

1......... Scope....................................................................................................................................................................................... 11

2......... Normative references........................................................................................................................................................... 12

3......... Terms, definitions, symbols and abbreviations............................................................................................................... 18

3.1...... Terms and definitions........................................................................................................................................................... 18

3.2...... Symbols and abbreviations................................................................................................................................................. 21

4......... Operating range..................................................................................................................................................................... 22

4.1...... General.................................................................................................................................................................................... 22

4.2...... Flow rate range (conformity/individual)............................................................................................................................. 22

4.3...... Operating pressure range (conformity/individual).......................................................................................................... 22

4.4...... Operating temperature range (conformity/individual).................................................................................................... 22

5......... Metrological performance.................................................................................................................................................... 23

5.1...... General.................................................................................................................................................................................... 23

5.2...... Error of indication (conformity/individual)......................................................................................................................... 23

5.3...... Pressure loss (conformity/individual)................................................................................................................................ 24

5.4...... Metrological repeatability (conformity).............................................................................................................................. 25

5.5...... Operating pressure (conformity/individual)...................................................................................................................... 25

5.6...... Temperature ranges (conformity)...................................................................................................................................... 26

5.7...... Condensing ambient conditions (conformity).................................................................................................................. 27

5.8...... Bidirectional meters (conformity)....................................................................................................................................... 28

5.9...... Influence of oil filling (conformity)...................................................................................................................................... 28

6......... Design and manufacturing.................................................................................................................................................. 28

6.1...... General (conformity/individual).......................................................................................................................................... 28

6.2...... Material.................................................................................................................................................................................... 29

6.3...... Robustness............................................................................................................................................................................. 33

6.4...... Transportation and storage (conformity/individual)........................................................................................................ 37

6.5...... Connections (conformity)..................................................................................................................................................... 38

6.6...... Pressure and temperature tappings
(conformity)............................................................................................................................................................................. 38

6.7...... Manufacturing........................................................................................................................................................................ 39

7......... Meter output (conformity)..................................................................................................................................................... 40

7.1...... Index......................................................................................................................................................................................... 40

7.2...... Index window.......................................................................................................................................................................... 42

7.3...... Output drive shafts................................................................................................................................................................. 43

7.4...... Pulse generators.................................................................................................................................................................... 45

8......... Durability (conformity).......................................................................................................................................................... 47

8.1...... Requirements......................................................................................................................................................................... 47

8.2...... Tests......................................................................................................................................................................................... 47

9......... Marking, labelling and packaging (conformity/individual)............................................................................................. 47

9.1...... General.................................................................................................................................................................................... 47

Strana

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9.2...... Směr proudění....................................................................................................................................................................... 48

9.3...... Přípojky odběru tlaku............................................................................................................................................................ 48

9.4...... Trvanlivost a čitelnost označení......................................................................................................................................... 48

10....... Dokumentace (shodnost).................................................................................................................................................... 48

10.1.... Obecně.................................................................................................................................................................................... 48

10.2.... Dokumentace vztažená ke zkouškám u výrobce........................................................................................................... 49

10.3.... Prohlášení o shodě............................................................................................................................................................... 49

10.4.... Návod k obsluze.................................................................................................................................................................... 49

Příloha A (normativní) Schvalování typu....................................................................................................................................... 50

Příloha B (normativní) Zkoušky jednotlivých kusů měřidel....................................................................................................... 52

Příloha C (normativní) Odolnost vůči vysoké teplotě.................................................................................................................. 53

C.1..... Obecně.................................................................................................................................................................................... 53

C.2 Požadavky................................................................................................................................................................................ 53

C.3..... Zkouška................................................................................................................................................................................... 53

C.4..... Značení................................................................................................................................................................................... 54

Příloha D (normativní) Shoda vyhodnocení
pro plynoměry........................................................................................................................................................................ 55

D.1..... Obecně.................................................................................................................................................................................... 55

D.2..... Systém managementu kvality............................................................................................................................................ 55

Příloha E (normativní) Nedestruktivní zkoušení (NDT).............................................................................................................. 56

Příloha F (normativní) Materiály vystavené tlaku........................................................................................................................ 59

Příloha G (normativní) Doplňkové zkoušky pro měřidla používaná v otevřených prostorech............................................ 73

G.1..... Obecně.................................................................................................................................................................................... 73

G.2..... Vystavení povětrnostním vlivům........................................................................................................................................ 73

Příloha H (normativní) Řada měřidel............................................................................................................................................. 74

H.1..... Definice řady měřidel........................................................................................................................................................... 74

H.2..... Kritéria pro seskupování měřidel dohromady k vytvoření typové řady....................................................................... 74

Příloha ZA (informativní) Vztah mezi touto evropskou normou a základními požadavky směrnice EU 2014/32/EU, které mají být pokryty............................................................................................................................................................ 75

Příloha ZB (informativní) Vztah mezi touto evropskou normou a základními požadavky směrnice EU 2014/68/EU, které mají být pokryty............................................................................................................................................................ 83

Bibliografie.......................................................................................................................................................................................... 85

9.2...... Direction of flow..................................................................................................................................................................... 48

9.3...... Pressure tappings.................................................................................................................................................................. 48

9.4...... Durability and legibility of marking..................................................................................................................................... 48

10....... Documentation (conformity)................................................................................................................................................ 48

10.1.... General.................................................................................................................................................................................... 48

10.2.... Documentation related to the manufacturer's tests........................................................................................................ 49

10.3.... Declaration of conformity..................................................................................................................................................... 49

10.4.... Instruction manual................................................................................................................................................................. 49

Annex A (normative)°Pattern approval.......................................................................................................................................... 50

Annex B (normative) Individual meter testing.............................................................................................................................. 52

Annex C (normative) Resistance to high temperature................................................................................................................ 53

C.1..... General.................................................................................................................................................................................... 53

C.2..... Requirements......................................................................................................................................................................... 53

C.3..... Test........................................................................................................................................................................................... 53

C.4..... Marking.................................................................................................................................................................................... 54

Annex D (normative) Compliance evaluation for gas meters................................................................................................... 55

D.1..... General.................................................................................................................................................................................... 55

D.2..... Quality Management System.............................................................................................................................................. 55

Annex E (normative) Non-destructive testing (NDT)................................................................................................................... 56

Annex F (normative) Materials for pressurized parts.................................................................................................................. 59

Annex G (normative) Additional tests for meters
to be used in open locations................................................................................................................................................ 73

G.1..... General.................................................................................................................................................................................... 73

G.2..... Weathering.............................................................................................................................................................................. 73

Annex H (normative) Meter family.................................................................................................................................................. 74

H.1..... Definition of meter family.................................................................................................................................................... 74

H.2..... Criteria for grouping meters together
in order to form a family....................................................................................................................................................... 74

Annex ZA (informative) Relationship between
this European Standard and the essential requirements of EU Directive 2014/32/EU
aimed to be covered............................................................................................................................................................. 75

Annex ZB (informative) Relationship between
this European Standard and the essential requirements of EU Directive 2014/68/EU
aimed to be covered............................................................................................................................................................. 83

Bibliography........................................................................................................................................................................................ 85

1 Předmět normy

1 Scope

Tato evropská norma stanovuje rozsahy, konstrukci, funkce, výstupní charakteristiky a zkoušení rotačních objemových plynoměrů (v dalším textu označovaných jako RD měřidla nebo zjednodušeně měřidla) pro měření objemu plynu.

This European Standard specifies ranges, construction, performances, output characteristics and testing of rotary displacement gas meters (hereinafter referred to as RD meters or simply meters) for gas volume measurement.

Tato evropská norma platí pro rotační objemové plyno-
měry používané k měření objemu topných plynů 1., 2. a 3. skupiny plynů, jejichž složení je specifikováno v EN 437:2003+A1:2009, při maximálním pracovním tlaku plynu do a včetně 20 bar v rozsahu teplot okolí a plynu alespoň od –10 °C do +40 °C.

This European Standard applies to rotary displacement gas meters used to measure the volume of fuel gases of at least the 1st, 2nd and 3rd gas families, the com-
position of which is specified in EN 437:2003+A1:2009, at a maximum working pressure up to and including
20 bar over an ambient and gas temperature range of at least −10 °C to +40 °C.

Tato evropská norma platí pro měřidla, která jsou in-
stalována v místech s nevýznamnými vibracemi a rázy (třída M1) a v

This European Standard applies to meters that are
installed in locations with vibration and shocks of low significance (class M1) and in

–    uzavřených prostorech (vnitřních a venkovních s ochra-
nou specifikovanou výrobcem) s kondenzující vlhkostí nebo bez kondenzující vlhkosti

–    closed locations (indoor or outdoor with protection as specified by the manufacturer) with condensing or with non-condensing humidity

nebo, jestliže je to specifikováno výrobcem,

or, if specified by the manufacturer,

–    otevřených prostorech (venkovních bez jakékoliv ochrany) s kondenzující vlhkostí nebo bez konden-
zující vlhkosti,

–    open locations (outdoor without any covering) with condensing humidity or with non-condensing humidity,

a na místech s elektromagnetickými poruchami (třída E1 a E2). Normy se vztahují na mechanické měřiče s mechanickým indexem, na tato elektronická zařízení se tato norma nevztahuje.

and in locations with electromagnetic disturbances (class E1 and E2). The standards apply to mechanical meters with mechanical index, electronic devices are not covered by this standard.

Pokud není v této normě specifikováno jinak:

Unless otherwise specified in this standard:

–    všechny použité tlaky jsou přetlaky;

–    all pressures used are gauge;

–    všechny ovlivňující veličiny, kromě zkoušené veličiny, jsou udržovány relativně konstantní na jejich refe-
renční hodnotě.

–    all influence quantities, except the one under test, are kept relatively constant at their reference value.

Tato evropská norma platí také pro měřidla, u nichž součin maximálního dovoleného tlaku PS a vnitřního objemu tělesa plynoměru je menší než 6 000 bar∙litr nebo u nichž je součin PS a DN menší než 3 000 bar.

This European Standard applies to meters with a maxi-
mum allowable pressure PS and the volume V of less than 6 000 bar · litres or with a product of PS and DN of less than 3 000 bar.

Tato evropská norma může být používána pro schválení typu a individuální zkoušení měřidel. Tabulky křížových odkazů jsou uvedeny v:

This European Standard can be used for both pattern approval and individual meter testing. Cross-reference tables are given in:

–    příloze A pro zkoušky, které jsou potřebné pro schválení typu;

–    Annex A for the tests that need to be undertaken for pattern approval;

–    příloze B pro individuální zkoušení měřidel.

–    Annex B for individual meter testing.

Některé části této normy zahrnují pouze měřidla s me-
chanickými počitadly.

Some parts of this standard cover meters with mechanical index only.

Filosofie rizik přijatá v této normě je založena na ana-
lýze rizik včetně tlaku. Norma aplikuje principy k elimi-
nování nebo snížení nebezpečí. Kde tato nebezpečí nemohou být eliminována, jsou specifikována příslušná ochranná opatření.

The risk philosophy adopted in this standard is based on the analysis of hazards including pressure. The standard applies principles to eliminate or reduce hazards. Where these hazards cannot be eliminated appropriate protection measures are specified.