<p class="MsoBodyText"><span lang="EN-GB">This document applies to water meters used to meter the volume of cold potable water and hot water flowing through a fully charged, closed conduit. These water meters incorporate devices which indicate the integrated volume.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document specifies technical characteristics and pressure loss requirements for meters for cold potable water and hot water. It applies to water meters which can withstand:</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">a)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a maximum admissible pressure (MAP) equal to at least 1 MPa</span><span class="MsoFootnoteReference"><span lang="EN-GB" style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt;"><sup>1)</sup></span></span><span lang="EN-GB"> [0,6 MPa for meters for use with pipe nominal diameters (DNs) ≥500 mm];</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">b)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a maximum admissible temperature (MAT) for cold potable water meters of 30 °C;</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">c)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a MAT for hot water meters of up to 180 °C, depending on class.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">In addition to meters based on mechanical principles, this document also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the volume flow of hot water and cold potable water. It also applies to electronic ancillary devices. As a rule ancillary devices are optional. However, national or international regulations may make some ancillary devices mandatory in relation to the utilization of the water meter.</span></p>
<p class="MsoBodyText"><sup><span class="MsoFootnoteReference"><span lang="EN-GB">1)</span></span></sup><span lang="EN-GB"><span style="mso-spacerun: yes;"> </span>1 MPa = 10 bar (1 bar = 0,1 MPa =10<sup>5</sup> Pa; 1 MPa = 1 N/mm<sup>2</sup>).</span></p>
Registration number (WIID)
86240
Scope
<p class="MsoBodyText"><span lang="EN-GB">This document applies to water meters used to meter the volume of cold potable water and hot water flowing through a fully charged, closed conduit. These water meters incorporate devices which indicate the integrated volume.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document specifies technical characteristics and pressure loss requirements for meters for cold potable water and hot water. It applies to water meters which can withstand:</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">a)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a maximum admissible pressure (MAP) equal to at least 1 MPa</span><span class="MsoFootnoteReference"><span lang="EN-GB" style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt;"><sup>1)</sup></span></span><span lang="EN-GB"> [0,6 MPa for meters for use with pipe nominal diameters (DNs) ≥500 mm];</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">b)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a maximum admissible temperature (MAT) for cold potable water meters of 30 °C;</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">c)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">a MAT for hot water meters of up to 180 °C, depending on class.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">In addition to meters based on mechanical principles, this document also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the volume flow of hot water and cold potable water. It also applies to electronic ancillary devices. As a rule ancillary devices are optional. However, national or international regulations may make some ancillary devices mandatory in relation to the utilization of the water meter.</span></p>
<p class="MsoBodyText"><sup><span class="MsoFootnoteReference"><span lang="EN-GB">1)</span></span></sup><span lang="EN-GB"><span style="mso-spacerun: yes;"> </span>1 MPa = 10 bar (1 bar = 0,1 MPa =10<sup>5</sup> Pa; 1 MPa = 1 N/mm<sup>2</sup>).</span></p>
