INTERNATIONAL STANDARD
Watermetersforcoldpotablewater andhotwater-
Part 2:Testmethods
Compteurs d’eau potable froide et chaude -Partie 2: Methodes d’essai
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Contents
Page
Performance tests for all water meters.7.1 7.2 Required conditions for alltests. General. .8 87.3 7.4 Static pressure test (ISO 4064-1:2014|0IML R 49-1:2013 4.2.10) Determination of intrinsic errors (of indication) (ISO 4064-1:2014|OIML R 49-1:2013 6Water temperature test (ISO4064-1:2014|OIMLR49-1:2013 4.2.8) 7.2.3) 107.5 7.6 Overload water temperature test (ISO 4064-1:2014|01ML R 49-1:2013 7.2.5) 18 187.8 Water pressure test(ISO4064-1:2014↓OIMLR49-1:20134.2.8) Reverse flow test (ISO 4064-1:2014|OIML R 49-1:2013 4.2.7) 19 197.9 Pressure loss test (ISO 4064-1:2014↓O1ML R 49-1:2013 6.5). 217.11 7.10 Flow disturbance tests (ISO 4064-1:2014|O1ML R 49-1:2013 6.3.4). Durability tests (ISO 4064-1:2014]01ML R 49-1:2013 7.2.6). 25 267.12 7.13 Magnetic field testing. Tests on ancillary devices of a water meter. 31 317.14 Environmental testing 32
Performance tests related to influence factors and disturbances. 32
General requirements [ISO 4064-1:2014|OIML R 49-1:2013 A.1)8.1 8.2 Dry heat (non-condensing) (ISO 4064-1:2014]0IML R 49-1:2013 A.5). 32 368.3 8.4 Damp heat cyclic (condensing) (ISO 4064-1:2014|0IML R 49-1:2013 A.5) Cold (ISO 4064-1:2014|OIML R 49-1:2013 A.5). 388.5 Vibration (random) (ISO 4064-1:2014|01ML R 49-1:2013 A.5) Power supply variation (ISO 4064-1:2014|O1ML R 49-1:2013 A.5) 398.6 8.7 Mechanical shock (ISO 4064-1:2014|OIML R 49-1:2013 A.5) 42 438.8 AC mains voltage dips short interruptions and voltage variations (ISo 4064- 1:2014|0IML R 49-1:2013 A.5). 448.9 Bursts on signal lines (ISO 4064-1:2014|O1ML R 49-1:2013 A.5) 458.10 8.11 Bursts (transients) on AC and DC mains (ISO 4064-1:2014|OIML R 49-1:2013 A.5) Electrostatic discharge (ISO 4064-1:2014|0IML R 49-1:2013 A.5). 47 488.12 8.13 Conducted electromagneticfields(ISO4064-1:2014|0IMLR49-1:2013 A5) Radiated electromagnetic fields (ISO 4064-1:2014↓01ML R 49-1:2013 A.5) 49 518.14 Surges on signal data and control lines (ISO 4064-1:2014/01ML R 49-1:2013 A.5)8.15 8.16 Surges on AC and DC mains powerlines (ISO 4064-1:2014|0IML R 49-1:2013 A.5). Static magnetic field (ISO 4064-1:2014|OIML R 49-1:2013 7.2.8) 54 558.17 Absence of flow test. 56
Test program for type evaluation. 57
9.1 Number of samples required. 579.2 Performance test applicable to all water meters. 5756 Performance tests applicable to electronic water meters mechanical water meters fitted with electronic devices and their separable parts. 58Licensed to michaela@.il
9.4 9.5 Families of water meters. Type evaluation of separable parts of a water meter. 59 5810 Tests for initial verification. 5910.1 10.2 Initial verification of plete and bined water meters. Initial verification of separable parts of a water meter. 60 5911 Presentation of results. 6111.1 Object of the reports. 61Annex A (normative) Type examination and testing of checking facilities of electronic devices.63 11.2 Identification and test data to be included in records 61Annex B (normative) Calculating the relative error (of indication) of a water meter.. .69Annex C (normative) Installation requirements for flow disturbance tests. .75Annex D (normative) Type evaluation of a family of water meters. 77Annex E (informative) Examples of methods and ponents used for testing concentricAnnex F (informative) Determining the density of water. water meters. .79 82Annex G (informative) Maximum uncertainties in the measurement of influence factorsand disturbances. .84Annex H (informative) Pressure loss test pressure tappings hole and slot details. .87Annex I (normative) Flow disturbers. 90Bibliography 101
Foreword
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flow in closed conduits Submittee SC 7 Volume methods including water meters and OIML TechnicalSubmittee TC 8/SC 5 Water meters.
This fourth edition of ISO 4064-2 cancels and replaces the third edition (ISO 4064-2:2005) which has been technically revised. Provisions of the third edition are adressed in ISO 4064-5:2014.
ISO 4064 consists of the following parts under the general title Water meters for cold potable water andhot water:
- Part 1: Metrological and technical requirements
Part 4: Non-metrological requirements not covered in ISO 4064-1
-Part 5: Installation requirements
This edition of ISO 4064-2 is identical with the corresponding edition of OIML R 49-2 which has beenissued concurrently. OIML R 49-2 was approved for final publication by the International Committee ofto the International Conference on Legal Metrology in 2016 for formal sanction. Legal Metrology at its 48th meeting in Ho Chi Minh City Vietnam in October 2013 and will be submitted
