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eLibrary > BS EN ISO 4064-2:2025 Water meters for cold potable water and hot water - Test methods >

BS EN ISO 4064-2:2025 Water meters for cold potable water and hot water - Test methods, 2025

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BS EN ISO 4064-2:2025 Water meters for cold potable water and hot water - Test methods, 2025

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Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/32/EU aimed to be covered [Go to Page]
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Reference conditions
5 Symbols, units and equations
6 External examination [Go to Page]
6.1 General
6.2 Object of the examination
6.3 Preparation
6.4 Examination procedures [Go to Page]
6.4.1 General
6.4.2 Marks and inscriptions (ISO 4064-1:2024|OIML R 49‑1:2024, 6.6)
6.4.3 Indicating device (ISO 4064-1:2024|OIML R 49‑1:2024, 6.7)
6.4.4 Protection devices (ISO 4064-1:2024|OIML R 49‑1:2024, 6.8)
7 Performance tests for all water meters [Go to Page]
7.1 General
7.2 Required conditions for all tests [Go to Page]
7.2.1 Water quality
7.2.2 General rules concerning test installation and location
7.3 Static pressure test (ISO 4064-1:2024|OIML R 49‑1:2024, 4.2.10) [Go to Page]
7.3.1 Object of the test
7.3.2 Preparation
7.3.3 Test procedure
7.3.4 Acceptance criteria
7.4 Determination of intrinsic errors (of indication) (ISO 4064-1:2024|OIML R 49‑1:2024, 7.2.3) [Go to Page]
7.4.1 Object of the test
7.4.2 Preparation
7.4.3 Combination meters
7.4.4 Test procedure
7.4.5 Acceptance criteria
7.4.6 Interchange test on all types of cartridge meters and meters with exchangeable metrological modules (ISO 4064-1:2024|OIML R 49‑1:2024, 7.2.7)
7.5 Water temperature test (ISO 4064-1:2024|OIML R 49‑1:2024, 4.2.8) [Go to Page]
7.5.1 Object of the test
7.5.2 Preparation
7.5.3 Test procedure
7.5.4 Acceptance criteria
7.6 Overload water temperature test (ISO 4064-1:2024|OIML R 49‑1:2024, 7.2.5) [Go to Page]
7.6.1 Object of the test
7.6.2 Preparation
7.6.3 Test procedure
7.6.4 Acceptance criteria
7.7 Water pressure test (ISO 4064-1:2024|OIML R 49‑1:2024, 4.2.8) [Go to Page]
7.7.1 Object of the test
7.7.2 Preparation
7.7.3 Test procedure
7.7.4 Acceptance criteria
7.8 Reverse flow test (ISO 4064-1:2024|OIML R 49‑1:2024, 4.2.7) [Go to Page]
7.8.1 Object of the test
7.8.2 Preparation
7.8.3 Test procedure
7.8.4 Acceptance criteria
7.9 Pressure loss test (ISO 4064-1:2024|OIML R 49‑1:2024, 6.5) [Go to Page]
7.9.1 Object of the test
7.9.2 Equipment for pressure loss test
7.9.3 Test procedure
7.9.4 Calculation of the actual Δp of a water meter
7.9.5 Acceptability criteria
7.10 Flow disturbance tests (ISO 4064-1:2024|OIML R 49‑1:2024, 6.3.4) [Go to Page]
7.10.1 Object of the tests
7.10.2 Preparation
7.10.3 Test procedure
7.10.4 Acceptance criteria
7.11 Durability tests (ISO 4064-1:2024|OIML R 49‑1:2024, 7.2.6) [Go to Page]
7.11.1 General
7.11.2 Discontinuous flow test
7.11.3 Continuous flow test
7.12 Magnetic field testing
7.13 Tests on ancillary devices of a water meter [Go to Page]
7.13.1 Object of the test
7.13.2 Preparation
7.13.3 Test procedure
7.13.4 Acceptance criteria
7.14 Environmental testing
7.15 Software evaluation
8 Performance tests related to influence factors and disturbances [Go to Page]
8.1 General requirements (ISO 4064-1:2024|OIML R 49‑1:2024, A.1) [Go to Page]
8.1.1 Overview
8.1.2 Environmental classification
8.1.3 Electromagnetic classification
8.1.4 Reference conditions (ISO 4064-1:2024|OIML R 49‑1:2024, 7.1)
8.1.5 Test volumes for measuring error (of indication) of a water meter
8.1.6 Influence of the water temperature (ISO 4064-1:2024|OIML R 49‑1:2024, A.5)
8.1.7 Requirements for environmental tests
8.1.8 Equipment under test (ISO 4064-1:2024|OIML R 49‑1:2024, 7.2.12.3)
8.1.9 Determination of required tests
8.2 Dry heat (non-condensing) (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.2.1 Object of the test
8.2.2 Preparation
8.2.3 Test procedure (in brief)
8.2.4 Acceptance criteria
8.3 Cold (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.3.1 Object of the test
8.3.2 Preparation
8.3.3 Test procedure (in brief)
8.3.4 Acceptance criteria
8.4 Damp heat, cyclic (condensing) (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.4.1 Object of the test
8.4.2 Preparation
8.4.3 Test procedure (in brief)
8.4.4 Acceptance criteria
8.5 Power supply variation (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.5.1 Water meters powered by direct AC or by AC/DC converters (ISO 4064-1:2024|OIML R 49‑1:2024, A.5)
8.5.2 Water meters powered by external DC voltage or by primary DC batteries (ISO 4064-1:2024|OIML R 49‑1:2024, A.5)
8.5.3 Interruption in battery supply
8.6 Vibration (random) (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.6.1 Object of the test
8.6.2 Preparation
8.6.3 Test procedure (in brief)
8.6.4 Acceptance criteria
8.7 Mechanical shock (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.7.1 Object of the test
8.7.2 Preparation
8.7.3 Test procedure (in brief)
8.7.4 Acceptance criteria
8.8 AC mains voltage dips, short interruptions and voltage variations (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.8.1 Object of the test
8.8.2 Preparation
8.8.3 Test procedure (in brief)
8.8.4 Acceptance criteria
8.9 Bursts on signal lines (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.9.1 Object of the test
8.9.2 Preparation
8.9.3 Test procedure (in brief)
8.9.4 Acceptance criteria
8.10 Bursts (transients) on AC and DC mains (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.10.1 Object of the test
8.10.2 Preparation
8.10.3 Test procedure (in brief)
8.10.4 Acceptance criteria
8.11 Electrostatic discharge (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.11.1 Object of the test
8.11.2 Preparation
8.11.3 Test procedure (in brief)
8.11.4 Acceptance criteria
8.12 Radiated electromagnetic fields (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.12.1 Object of the test
8.12.2 Preparation
8.12.3 Test procedure (in brief)
8.12.4 Acceptance criteria
8.13 Conducted electromagnetic fields (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.13.1 Object of the test
8.13.2 Preparation
8.13.3 Test procedure (in brief)
8.13.4 Acceptance criteria
8.14 Surges on signal, data and control lines (ISO 4064-1|OIML R 49‑1, A.5) [Go to Page]
8.14.1 Object of the test
8.14.2 Preparation
8.14.3 Test procedure (in brief)
8.14.4 Acceptance criteria
8.15 Surges on AC and DC mains power lines (ISO 4064-1:2024|OIML R 49‑1:2024, A.5) [Go to Page]
8.15.1 Object of the test
8.15.2 Preparation
8.15.3 Test procedure (in brief)
8.15.4 Acceptance criteria
8.16 Static magnetic field (ISO 4064-1|OIML R 49‑1, 7.2.8) [Go to Page]
8.16.1 Test conditions
8.16.2 Object of the test
8.16.3 Preparation
8.16.4 Test procedure in brief
8.16.5 Acceptance criteria
8.17 Absence of flow test [Go to Page]
8.17.1 Object of the test
8.17.2 Preparation
8.17.3 Test procedure
8.17.4 Acceptance criteria
8.18 Mains power frequency electromagnetic fields test [Go to Page]
8.18.1 Object of the test
8.18.2 Preparation
8.18.3 Test procedure
8.18.4 Acceptance criteria
9 Test program for type evaluation [Go to Page]
9.1 Number of samples required
9.2 Performance test applicable to all water meters
9.3 Performance tests applicable to electronic water meters, mechanical water meters fitted with electronic devices, and their separable parts
9.4 Type evaluation of separable parts of a water meter
9.5 Families of water meters
10 Tests for initial verification [Go to Page]
10.1 Initial verification of complete and combined water meters [Go to Page]
10.1.1 Object of the test
10.1.2 Preparation
10.1.3 Test procedure
10.1.4 Acceptance criteria
10.2 Initial verification of separable parts of a water meter [Go to Page]
10.2.1 Object of the test
10.2.2 Preparation
10.2.3 Test procedure
10.2.4 Acceptance criteria
11 Presentation of results [Go to Page]
11.1 Object of the reports
11.2 Identification and test data to be included in records [Go to Page]
11.2.1 Type evaluation
11.2.2 Initial verification
Annex A (normative) Type examination and testing of checking facilities of electronic devices
Annex B (normative) Calculating the relative error (of indication) of a water meter
Annex C (normative) Installation requirements for flow disturbance tests
Annex D (normative) Type evaluation of a family of water meters
Annex E (informative) Examples of methods and components used for testing concentric water meters
Annex F (informative) Maximum uncertainties in the measurement of influence factors and disturbances
Annex G (informative) Pressure loss test pressure tappings, hole and slot details
Annex H (normative) Flow disturbers
Annex I (normative) Software evaluation for software-controlled water meters
Bibliography [Go to Page]

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BS EN ISO 4064-2:2025 Water meters for cold potable water and hot water - Test methods, 2025

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