ДСТУ OIML R 49-2:2014 Лічильники води для холодної питної води та гарячої води. Частина 2. Методи випробувань (OIML R 49-2, edition 2013, IDT)

ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

МІНІСТЕРСТВО ЕКОНОМІЧНОГО РОЗВИТКУ І ТОРГІВЛІ УКРАЇНИ

Наказ від 30.12.2014 № 1494

OIML R 49-2, edition 2013

Water meters for cold potable water
and hot water. Part 2: Test methods

прийнято як національний стандарт
методом «підтвердження» за позначенням
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ДСТУ OIML R 49-2:2014
(OIML R 49-2, edition 2013, IDT)

Лічильники води для холодної питної води
та гарячої води. Частина 2. Методи випробувань

З наданням чинності від 2016-01-01

Contents

Foreword

1 Scope

2 Normative references

3 Terms and definitions

4 Reference conditions

5 Symbols, units and equations

6 External examination

6.1 General

6.2 Object of the examination

6.3 Preparation

6.4 Examination procedures

7 Performance tests for all water meters

7.1 General

7.2 Required conditions for all tests

7.3 Static pressure test (OIML R 49-1:2013, 4.2.10)

7.4 Determination of intrinsic errors (of indication) (OIML R 49-1:2013, 7.2.3)

7.5 Water temperature test (OIML R 49-1:2013, 4.2.8)

7.6 Overload water temperature test (OIML R 49-1:2013, 7.2.5)

7.7 Water pressure test (OIML R 49-1:2013, 4.2.8)

7.8 Reverse flow test (OIML R 49-1:2013, 4.2.7)

7.9 Pressure loss test (OIML R 49-1:2013, 6.5)

7.10 Flow disturbance tests (OIML R 49-1:2013, 6.3.4)

7.11 Durability tests (OIML R 49-1:2013, 7.2.6)

7.12 Magnetic field testing

7.13 Tests on ancillary devices of a water meter

7.14 Environmental testing

8 Performance tests related to influence factors and disturbances

8.1 General requirements (OIML R 49-1:2013, A.1)

8.2 Dry heat (non-condensing) (OIML R 49-1:2013, A.5)

8.3 Cold (OIML R 49-1:2013, A.5)

8.4 Damp heat, cyclic (condensing) (OIML R 49-1:2013, A.5)

8.5 Power supply variation (OIML R 49-1:2013, A.5)

8.6 Vibration (random) (OIML R 49-1:2013, A.5)

8.7 Mechanical shock (OIML R 49-1:2013, A.5)

8.8 AC mains voltage dips, short interruptions and voltage variations (OIML R 49-1:2013, A.5)

8.9 Bursts on signal lines (OIML R 49-1:2013, A.5)

8.10 Bursts (transients) on AC and DC mains (OIML R 49-1:2013, A.5)

8.11 Electrostatic discharge (OIML R 49-1:2013, A.5)

8.12 Radiated electromagnetic fields (OIML R 49-1:2013, A.5)

8.13 Conducted electromagnetic fields (OIML R 49-1:2013, A.5)

8.14 Surges on signal, data and control lines (OIML R 49-1:2013, A.5)

8.15 Surges on AC and DC mains power lines (OIML R 49-1:2013, A.5)

8.16 Static magnetic field (OIML R 49-1:2013, 7.2.8)

8.17 Absence of flow test

9 Test program for type evaluation

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

10.1 Initial verification of complete and combined water meters

10.2 Initial verification of separable parts of a water meter

11 Presentation of results

11.1 Object of the reports

11.2 Identification and test data to be included in records

Annex A (Mandatory) Type examination and testing of checking facilities of electronic devices

Annex B (Mandatory ) Calculating the relative error (of indication) of a water meter

Annex C (Mandatory) Installation requirements for flow disturbance tests

Annex D (Mandatory) 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) Determining the density of water

Annex G (Informative) Maximum uncertainties in the measurement of influence factors and disturbances

Annex H (Informative) Pressure loss test pressure tappings, hole and slot details

Annex I (Mandatory) Flow disturbers

Bibliography