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1、 Reference number ISO 4064-1:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 4064-1 Third edition 2005-10-15 Measurement of water flow in fully charged closed conduits Meters for cold potable water and hot water Part 1: Specifications Mesurage de dbit deau dans les conduites fermes en pleine charge Comp
2、teurs deau potable froide et deau chaude Partie 1: Spcifications Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without licen
3、se from IHS -,-,- ISO 4064-1:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing th
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6、at at the address given below. ISO 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address
7、 below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2005 All rights reserved Copyright International Organization for St
8、andardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4064-1:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv 1 Scope . 1
9、2 Normative references. 1 3 Terms and definitions. 2 4 Technical characteristics. 8 4.1 In-line meters. 8 4.2 Concentric meters 10 4.3 Pressure loss 11 5 Metrological requirements. 12 5.1 Metrological characteristics 12 5.2 Maximum permissible error. 13 5.3 Zero flow totalization 14 5.4 Rated operat
10、ing conditions (ROC) 14 5.5 Flow profile sensitivity classes. 16 5.6 Requirements for electronic meters and meters with electronic devices 17 6 Technical requirements . 19 6.1 Requirements for materials and construction of water meters. 19 6.2 Endurance . 19 6.3 Adjustment of water meters 19 6.4 Ver
11、ification marks and protection devices 19 6.5 Electronic sealing devices. 19 6.6 Indicating device. 20 6.7 Water meters equipped with electronic devices . 23 6.8 Descriptive markings 30 Annex A (informative) Concentric water meter manifold. 32 Annex B (informative) Design features and actual flowrat
12、es of water meters. 35 Annex C (normative) Checking facilities . 37 Bibliography. 41 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking per
13、mitted without license from IHS -,-,- ISO 4064-1:2005(E) iv ISO 2005 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out
14、 through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO col
15、laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International S
16、tandards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements
17、 of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4064-1 was prepared by Technical Committee ISO/TC 30, Measurement of fluid flow in closed conduits, Subcommittee SC 7, Volume methods including water meters. Th
18、is third edition cancels and replaces the second edition (ISO 4064-1:1993), which has been technically revised as well as cancelling and replacing ISO 7858-1:1998 and ISO 10385-1:2000. ISO 4064 consists of the following parts, under the general title Measurement of water flow in fully charged closed
19、 conduits Meters for cold potable water and hot water: Part 1: Specifications Part 2: Installation requirements Part 3: Test methods and equipment Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Re
20、sale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 4064-1:2005(E) ISO 2005 All rights reserved 1 Measurement of water flow in fully charged closed conduits Meters for cold potable water and hot water Part 1: Specifications 1
21、 Scope This part of ISO 4064 specifies terminology, technical characteristics, metrological characteristics and pressure loss requirements for cold potable water and hot water meters. It applies to water meters that can withstand maximum admissible working pressures (MAP) W 1 MPa1) (0,6 MPa for mete
22、rs for use with pipe nominal diameters, DN W 500 mm) and a maximum admissible temperature, MAT, for cold potable water meters of 30 C and for hot water meters up to 180 C, depending on class. This part of ISO 4064 also applies to water meters, based on electrical or electronic principles and to wate
23、r meters based on mechanical principles incorporating electronic devices, used to meter the actual volume flow of cold potable water and hot water. It also applies to electronic ancillary devices. Generally ancillary devices are optional. The specifications of this part of ISO 4064 apply to water me
24、ters, irrespective of technology, defined as integrating measuring instruments continuously determining the volume of water flowing through them. NOTE National regulations may apply in the country of use. These will take precedence over the provisions of this part of ISO 4064. 2 Normative references
25、 The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3:1973, Preferred numbers Series of preferre
26、d numbers ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation ISO 4064-3:2005, Measurement of water flow in fully charged closed conduits Meters for cold potable water and hot water Part 3: Test methods and equipment ISO 6817
27、 Measurement of conductive liquid flow in closed conduits Method using electromagnetic flowmeters ISO 7005-2, Metallic flanges Part 2: Cast iron flanges 1) 0,1 MPa = 1 bar Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standard
28、s 1/9972545001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4064-1:2005(E) 2 ISO 2005 All rights reserved ISO 7005-3, Metallic flanges Part 3: Copper alloy and composite flanges OIML D 11:1994, General requirements for electronic m
29、easuring instruments OIML V 1:2000, International vocabulary of terms in legal metrology (VIML) OIML V 2: 1993, International vocabulary of basic and general terms in metrology (VIM) 3 Terms and definitions For the purposes of this document, the terms and definitions given in OIML V 2 and OIML V 1 a
30、nd the following apply. NOTE The terms 3.27 to 3.43 are typically associated with electronic and electrical equipment. 3.1 flowrate Q quotient of the actual volume of water passing through the water meter and the time taken for this volume to pass through the water meter 3.2 actual volume Va total v
31、olume of water passing through the water meter, disregarding the time taken NOTE This is the measurand of the meter. 3.3 indicated volume Vi volume of water indicated by the meter, corresponding to the actual volume 3.4 maximum permissible error MPE extreme values of the relative error of indication
32、 of the water meter permitted by this part of ISO 4064 3.5 rated operating conditions ROC conditions of use giving the range of values of the influence factors, for which the errors of indication of the water meter are required to be within the MPE 3.6 limiting conditions LC extreme conditions, incl
33、uding flowrate, temperature, pressure, humidity and electromagnetic interference, EMI, that a water meter is required to withstand without damage, and without degradation of its error of indication, when it is subsequently operated within its ROC NOTE 1 The above refers to both upper and lower LC. N
34、OTE 2 The LC for storage, transport and operation may be different. 3.7 relative error error of indication divided by the actual volume, expressed as a percentage Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/99725
35、45001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4064-1:2005(E) ISO 2005 All rights reserved 3 3.8 error of indication indicated volume minus the actual volume 3.9 permanent flowrate Q3 highest flowrate within ROC at which a wate
36、r meter is required to operate in a satisfactory manner within the maximum permissible error 3.10 overload flowrate Q4 highest flowrate at which a water meter is required to operate for a short period of time within its MPE, whilst maintaining its metrological performance when it is subsequently ope
37、rated within its ROC 3.11 minimum flowrate Q1 lowest flowrate at which the water meter is required to operate within the MPE 3.12 transitional flowrate Q2 flowrate which occurs between the permanent flowrate, Q3, and minimum flowrate, Q1, that divides the flowrate range into two zones, the “upper zo
38、ne” and the “lower zone”, each characterized by its own MPE 3.13 minimum admissible working temperature mAT minimum temperature that a water meter can withstand permanently at a given internal pressure, without deterioration of its metrological performance 3.14 maximum admissible working temperature
39、 MAT maximum temperature that a water meter can withstand permanently at a given internal pressure, without deterioration of its metrological performance NOTE mAT and MAT are respectively the lower and upper limits of the ROC for working temperature. 3.15 minimum admissible working pressure mAP mini
40、mum pressure that a water meter can withstand permanently within ROC, without deterioration of its metrological performance 3.16 maximum admissible working pressure MAP maximum pressure that a water meter can withstand permanently within ROC, without deterioration of its metrological performance NOT
41、E mAP and MAP are respectively the lower and upper limits of the ROC for working pressure. 3.17 working temperature Tw average water temperature in the pipe, measured upstream and downstream of the water meter Copyright International Organization for Standardization Provided by IHS under license wit
42、h ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 22:26:58 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4064-1:2005(E) 4 ISO 2005 All rights reserved 3.18 working pressure Pw average water pressure in the pipe, measured upstream and down
43、stream of the water meter 3.19 pressure loss p head loss, at a given flowrate caused by the presence of the meter in the pipeline 3.20 in-line meter type of water meter, fitted directly into a closed conduit by means of the meter end connections (threaded or flanged) provided 3.21 combination meter
44、in-line type of water meter comprising one large flowrate meter, one small flowrate meter and a changeover device that, depending on the magnitude of the flowrate passing through the meter, automatically directs the flow through either the small or large meter or both NOTE The meter reading is obtai
45、ned from two independent totalizers or one totalizer, which adds up the values from both water meters. 3.22 concentric meter type of water meter fitted into a closed conduit by means of an intermediate fitting called a manifold, whereby the inlet and outlet passages of the meter and manifold, at the
46、 interface between them, are coaxial 3.23 concentric meter manifold pipefitting specific to the connection of a concentric meter 3.24 complete meter meter that does not have separable measurement transducer (including flow sensor) and calculator (including indicating device) 3.25 combined meter mete
47、r that has separable measurement transducer (including flow sensor) and calculator (including indicating device) 3.26 flow sensor volume sensor that part of the water meter (such as a disc, piston, wheel, turbine element or electromagnetic coil), which senses the flowrate or volume of water passing
48、through the meter 3.27 measurement transducer part of the meter that transforms the flow or the volume of the water to be measured into signals that are passed to the calculator NOTE 1 It can be based on a mechanical, electrical or electronic principles. It can be autonomous or use an external power source. NOTE 2 For the purposes of this part of ISO 4064, the measurement transducer includes the flow or volume sensor. Copyright International Organization for Standardization Provided by IHS under license w