BS EN 1359:2017
$215.11
Gas meters. Diaphragm gas meters
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 74 |
This European Standard specifies the requirements and tests for the construction, performance, safety and production of class 1,5 diaphragm gas meters (referred to as meters). This applies to meters with co-axial single pipe, or two pipe connections, that are used to measure volumes of fuel gases, which are within the limits of test gases of the 1st, 2nd and 3rd families described in EN 437. The meters have maximum working pressures not exceeding 0,5 bar and maximum actual flow rates not exceeding 160 m3.h?1 over a minimum ambient temperature range of ?10 °C to 40 °C and a gas temperature range as specified by the manufacturer with a minimum range of 40 K. This standard applies to meters with and without built-in temperature conversion that are installed in locations with vibration and shocks of low significance (see MID Annex 1 Chapter 1.3.2 (a), class M1). It also applies to meters in: – closed locations (indoor or outdoor with protection as specified by the manufacturer) both with condensing humidity or with non-condensing humidity; or, if specified by the manufacturer: – open locations (outdoor without any covering) both with condensing humidity and with non-condensing humidity; – in locations with electromagnetic disturbances corresponding to those likely to be found in residential, commercial and light industrial buildings (see MID Annex 1 Chapter 1.3.3 (a), class E1). Unless otherwise stated, all pressures given in this document are gauge pressure. Requirements for electronic indexes, batteries, valves incorporated in the meter and other additional functionalities are given in EN 16314. Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices intended by the manufacturer. Clauses 1 to 9 and Annexes B and C are for design and type testing only. NOTE The content of OIML Publication ‘International Recommendation R 137’ has been taken into account in the drafting of this standard. If no specific requirements are given for test equipment, the instruments used should be traceable to a national or international reference standard and the uncertainty (2?) should be better than 1/5 of the maximum value of the parameter to be tested. For differential results the repeatability (2?)/resolution should be better than 1/5 of the maximum value of the parameter to be tested.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 12 | 3.2 Symbols |
| 13 | 4 Working conditions 4.1 Flow range |
| 14 | 4.2 Maximum working pressure 4.3 Temperature range 4.4 Climatic environment |
| 15 | 4.5 Installation orientation 5 Metrological performance 5.1 Errors of indication 5.1.1 Requirements 5.1.2 Test procedure ― Errors of indication |
| 16 | 5.2 Pressure absorption 5.2.1 Requirements |
| 17 | 5.2.2 Test procedure ― Pressure absorption 5.3 Starting flow rate 5.3.1 Requirements 5.3.2 Test procedure ― Starting flow rate |
| 18 | 5.4 Metrological stability 5.4.1 Requirements 5.4.2 Test procedure ― Metrological stability 5.5 Overload flow rate 5.5.1 Requirements 5.5.2 Test procedure ― Overload flow rate 5.6 Environment and humidity 5.6.1 Requirements 5.6.2 Test procedure ― Environment and humidity 5.7 Influence of other devices attached to the meter 5.7.1 Requirements |
| 19 | 5.7.2 Test procedure ― Influence of other devices 5.8 Cyclic volume 5.8.1 Requirements 5.8.2 Test procedure ― Cyclic volume 6 Construction and materials 6.1 General 6.2 Resistance to interference 6.2.1 Mechanical interference 6.2.1.1 Requirement 6.2.1.2 Test 6.2.2 Electromagnetic interference |
| 20 | 6.3 Robustness 6.3.1 General 6.3.2 Meter case 6.3.3 External leak tightness 6.3.3.1 Requirements 6.3.3.2 Test procedure ― External leak tightness 6.3.4 Resistance to internal pressure 6.3.4.1 Requirements |
| 21 | 6.3.4.2 Test procedure ― Resistance to internal pressure 6.3.5 Meter case sealing 6.3.5.1 Requirements 6.3.5.2 Test procedure ― Meter case sealing 6.3.6 Connections 6.3.6.1 Orientation Threads and flanges for single and two pipe meters |
| 24 | 6.3.6.3 Strength |
| 25 | 6.3.7 Resistance to vibration 6.3.7.1 Requirements |
| 26 | 6.3.7.2 Apparatus 6.3.7.3 Test procedure |
| 27 | 6.3.8 Resistance to impact 6.3.8.1 Requirements 6.3.8.2 Apparatus |
| 29 | 6.3.8.3 Test procedure 6.3.9 Resistance to mishandling 6.3.9.1 Requirements |
| 30 | 6.3.9.2 Test procedure — Resistance to mishandling 6.4 Corrosion protection 6.4.1 General |
| 31 | 6.4.2 External corrosion 6.4.2.1 Scratch resistance of the protective coating 6.4.2.2 Adhesion of the protective coating 6.4.2.3 Impact resistance of the protective coating 6.4.2.4 Chemical resistance of the protective coating 6.4.2.5 Resistance to salt spray 6.4.2.6 Resistance to humidity |
| 32 | 6.4.3 Internal corrosion 6.4.3.1 Adhesion of the protective coating 6.4.3.2 Impact resistance of the protective coating 6.4.3.3 Chemical resistance of the protective coating 6.4.3.4 Resistance to humidity 6.5 Resistance to storage temperature range 6.5.1 Requirements 6.5.2 Test procedure ― Resistance to storage temperature range |
| 33 | 6.6 Optional features 6.6.1 Pressure measuring point 6.6.1.1 Requirements 6.6.1.2 Test procedure ― Pressure measuring point 6.6.2 Electrical insulating feet 6.6.2.1 Requirements 6.6.2.2 Test procedure ― Electrical insulating feet 6.6.3 Magnetic index drive 6.6.3.1 Requirements |
| 34 | 6.6.3.2 Test procedure ― Magnetic index drive 6.6.4 Devices to prevent the registration of reverse flow 6.6.4.1 Requirements 6.6.4.2 Test procedure ― Devices to prevent the registration of reverse flow 6.6.5 Devices to prevent reverse flow 6.6.5.1 Requirements 6.6.5.2 Test procedure ― Devices to prevent reverse flow 6.6.6 Resistance to high temperatures 6.6.6.1 Requirements |
| 35 | 6.6.6.2 Apparatus 6.6.6.3 Test procedure ― Resistance to high ambient temperatures |
| 36 | 6.6.7 Diaphragm gas meters provided with a built-in gas temperature conversion device 6.6.8 Additional functionalities 7 Mechanical performance 7.1 Meter assembly 7.1.1 General 7.1.2 Durability 7.1.2.1 Requirements |
| 37 | 7.1.2.2 Endurance tests |
| 41 | 7.1.3 Meter error of indication at declared gas temperature limits 7.1.3.1 Requirements 7.1.3.2 Test procedure ― Meter error of indication at declared gas temperature |
| 42 | 7.1.4 Error of indication subject to declared ambient temperature limits 7.1.4.1 Requirements 7.1.4.2 Test procedure |
| 43 | 7.2 Index 7.2.1 Construction details 7.2.1.1 Requirements |
| 44 | 7.2.1.2 Test 7.2.2 Index windows and surround 7.2.2.1 Requirements 7.2.2.2 Test procedure ― Index windows and surround |
| 45 | 7.3 Diaphragms and components in the gas path 7.3.1 Requirements for diaphragms and non-rubber components in the gas path 7.3.2 Requirements for rubber components in the gas path 7.3.3 Toluene/iso-octane vapour test 7.3.3.1 Requirements 7.3.3.2 Apparatus |
| 47 | 7.3.3.3 Reagents 7.3.3.4 Procedure ― Toluene/iso-octane vapour test 7.3.4 Water vapour test |
| 49 | 7.3.5 Ageing 7.3.5.1 Requirement 7.3.5.2 Test 8 Marking 8.1 All meters |
| 50 | 8.2 Two-pipe meters 8.3 Durability and legibility of marking 8.3.1 Requirements 8.3.2 Ultraviolet exposure test 8.3.3 Indelibility |
| 51 | 8.3.4 Adhesion 8.3.4.1 General 8.3.4.2 Requirements 8.3.4.3 Test 9 Meters supplied for testing 9.1 General |
| 55 | Annex A (normative)Production requirements for gas meters A.1 General A.2 Technical requirements A.2.1 General A.2.2 Verification of conformity at the temperature of the test laboratory |
| 56 | A.2.3 Meters with a built-in gas temperature conversion device A.3 Declaration of conformity |
| 57 | A.4 Provision of information |
| 58 | Annex B (normative)Diaphragm gas meters provided with a built-in gas temperature conversion device B.1 Scope B.2 Metrological performance B.2.1 Errors of indication at declared gas temperature range B.2.1.1 General B.2.1.2 Requirements B.2.1.3 Test procedure |
| 60 | B.2.2 Error of indication subject to declared ambient temperature limits B.2.2.1 Requirements B.2.2.2 Test procedure |
| 61 | B.2.3 Error of indication where the gas and ambient temperatures are not equal B.2.3.1 Requirements B.2.3.2 Test procedure |
| 62 | B.2.4 Durability B.2.4.1 Requirements |
| 63 | B.2.4.2 Endurance tests |
| 64 | B.3 Marking |
| 65 | Annex C (normative)Tests for meters to be used in open locations C.1 Humidity C.1.1 Requirements C.1.2 Test C.2 Weathering C.2.1 Requirement C.2.2 Test |
| 67 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2014/32/EU Measuring Instruments Directive aimed to be covered |
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BS EN 1359:2017 – TC:2020 Edition
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