{"id":5190,"date":"2024-10-12T08:59:40","date_gmt":"2024-10-12T08:59:40","guid":{"rendered":"https:\/\/www.bmagmeter.com\/?p=5190"},"modified":"2024-10-15T08:09:16","modified_gmt":"2024-10-15T08:09:16","slug":"comprehension-globale-de-la-classe-de-precision-des-compteurs-deau","status":"publish","type":"post","link":"https:\/\/www.bmagmeter.com\/fr\/comprehensive-understanding-water-meter-accuracy-class\/","title":{"rendered":"Compr\u00e9hension globale de la classe de pr\u00e9cision des compteurs d'eau"},"content":{"rendered":"<p class=\"wp-block-paragraph\">La classe de pr\u00e9cision des compteurs d'eau est un param\u00e8tre essentiel qui d\u00e9finit la pr\u00e9cision des mesures d'un compteur d'eau. Elle indique l'erreur maximale tol\u00e9r\u00e9e (EMT) dans les relev\u00e9s du compteur \u00e0 diff\u00e9rents d\u00e9bits. En d'autres termes, elle indique dans quelle mesure la mesure du compteur est proche du volume d'eau r\u00e9el qui le traverse.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les normes modernes de pr\u00e9cision des compteurs d'eau, telles que la norme ISO 4064:2014, classent les compteurs d'eau en deux grandes classes de pr\u00e9cision : Classe 1 et Classe 2. Les compteurs de classe 1 sont plus pr\u00e9cis que ceux de classe 2. Cette classification est essentielle pour la pr\u00e9cision des compteurs d'eau r\u00e9sidentiels et pour diverses autres applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Normes d\u00e9finissant les classes de pr\u00e9cision des compteurs d'eau<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Plusieurs normes internationales d\u00e9finissent les classes de pr\u00e9cision des compteurs d'eau. Examinons les exigences sp\u00e9cifi\u00e9es dans chacune d'entre elles :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>ISO 4064-1:2014<\/strong> &amp; <strong>OIML R 49:2013<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Compteurs d'eau de classe de pr\u00e9cision 1<\/strong>:<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">L'EMT pour la zone de d\u00e9bit sup\u00e9rieure (<em>Q<\/em>2\u2264<em>Q<\/em>\u2264<em>Q<\/em>4) est de \u00b11 % pour les temp\u00e9ratures comprises entre 0,1 \u00b0C et 30 \u00b0C, et de \u00b12 % pour les temp\u00e9ratures sup\u00e9rieures \u00e0 30 \u00b0C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'EMT pour la zone \u00e0 plus faible d\u00e9bit (<em>Q<\/em>1\u2264<em>Q<\/em>&lt; Q2) est de \u00b13 % quelle que soit la plage de temp\u00e9rature.<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-preformatted\">L'EMT pour la zone de d\u00e9bit sup\u00e9rieure (Q2\u2264Q\u2264Q4) est de \u00b11 %, pour des temp\u00e9ratures comprises entre 0,1 \u00b0C et 30 \u00b0C, et de \u00b12 % pour des temp\u00e9ratures sup\u00e9rieures \u00e0 30 \u00b0C.<br>L'EMT pour la zone de d\u00e9bit inf\u00e9rieur (Q1\u2264Q&lt; Q2) est de \u00b13 % quelle que soit la plage de temp\u00e9rature.<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Compteurs d'eau de classe de pr\u00e9cision 2<\/strong>:<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\">L'EMT pour la zone de d\u00e9bit sup\u00e9rieure (Q2\u2264Q\u2264Q4) est de \u00b12 %, pour des temp\u00e9ratures comprises entre 0,1 \u00b0C et 30 \u00b0C, et de \u00b13 % pour des temp\u00e9ratures sup\u00e9rieures \u00e0 30 \u00b0C.<br>L'EMT pour la zone de d\u00e9bit inf\u00e9rieur (Q1\u2264Q&lt; Q2) est de \u00b15 % quelle que soit la plage de temp\u00e9rature.<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PPE<\/strong> signifie <strong>Erreur maximale admissible<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/www.bmagmeter.com\/fr\/produit\/mj-sdc-g-plastic-multi-jet-r160-water-meter\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-1024x1024.webp\" alt=\"Classe de pr\u00e9cision 2 des compteurs d&#039;eau BMAG\" class=\"wp-image-5203\" style=\"width:400px\" srcset=\"https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-1024x1024.webp 1024w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-300x300.webp 300w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-150x150.webp 150w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-768x768.webp 768w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-12x12.webp 12w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-600x600.webp 600w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2-100x100.webp 100w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/BMAG-water-meter-accuracy-class-2.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Classe de pr\u00e9cision 2 des compteurs d'eau BMAG<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>S\u00e9rie AWWA C700<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les normes de l'American Water Works Association (AWWA) fournissent des exigences de pr\u00e9cision d\u00e9taill\u00e9es pour diff\u00e9rents types de compteurs d'eau. Bien qu'elles n'utilisent pas la terminologie Classe 1 et Classe 2, elles sp\u00e9cifient les exigences de pr\u00e9cision pour diff\u00e9rents d\u00e9bits : <\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>AWWA C700 (compteurs \u00e0 d\u00e9placement) :<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e9bits d'essai normaux : \u00b11,5%<br>D\u00e9bits d'essai interm\u00e9diaires : \u00b12,0%<br>Faibles d\u00e9bits d'essai : \u00b13,0%<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>AWWA C701 (compteurs \u00e0 turbine) :<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e9bits d'essai normaux : \u00b11,5%<br>D\u00e9bits d'essai interm\u00e9diaires : \u00b12,0%<br>Faibles d\u00e9bits d'essai : \u00b15,0%<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Anciennes normes de pr\u00e9cision des compteurs d'eau : Classe A, B, C et D<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Avant l'introduction du nouveau syst\u00e8me de classe 1 et de classe 2, les compteurs d'eau \u00e9taient class\u00e9s en A, B, C et D. Cet ancien syst\u00e8me \u00e9tait d\u00e9fini dans la norme ISO 4064:1993. Voici les d\u00e9tails de l'ancienne classification :<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/www.bmagmeter.com\/fr\/produit\/compteur-deau-bi-directionnel-anti-vol\/\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-1024x1024.webp\" alt=\"Pr\u00e9cision du compteur d&#039;eau classe B\" class=\"wp-image-5200\" style=\"width:400px\" srcset=\"https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-1024x1024.webp 1024w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-300x300.webp 300w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-150x150.webp 150w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-768x768.webp 768w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-12x12.webp 12w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-600x600.webp 600w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B-100x100.webp 100w, https:\/\/www.bmagmeter.com\/wp-content\/uploads\/2024\/10\/water-meter-accuracy-class-B.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Pr\u00e9cision du compteur d'eau classe B<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La classe A est la plus basse et la classe D la plus \u00e9lev\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zone inf\u00e9rieure (Qmin \u00e0 Qt) : \u00b15%<br>Zone sup\u00e9rieure (Qt \u00e0 Qmax) : \u00b12%<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top}\n<\/style>\n<table class=\"tg\" style=\"undefined;table-layout: fixed; width: 820px\"><colgroup>\n<col style=\"width: 88px\">\n<col style=\"width: 58px\">\n<col style=\"width: 66px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<col style=\"width: 70px\">\n<\/colgroup>\n<thead>\n  <tr>\n    <th class=\"tg-c3ow\" rowspan=\"2\"><span style=\"font-weight:400;background-color:transparent\">Diam\u00e8tre nominal<\/span><\/th>\n    <th class=\"tg-c3ow\" rowspan=\"2\"><span style=\"font-weight:400;background-color:transparent\">Qn<\/span><br><span style=\"font-weight:400;background-color:transparent\">(<\/span><span style=\"background-color:transparent\">m\u00b3\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\" rowspan=\"2\"><span style=\"font-weight:400;background-color:transparent\">Qmax (<\/span><span style=\"background-color:transparent\">m\u00b3\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\" colspan=\"2\"><span style=\"font-weight:bolder;background-color:transparent\">Classe A<\/span><\/th>\n    <th class=\"tg-c3ow\" colspan=\"2\"><span style=\"font-weight:bolder;background-color:transparent\">Classe B<\/span><\/th>\n    <th class=\"tg-c3ow\" colspan=\"2\"><span style=\"font-weight:bolder;background-color:transparent\">Classe C<\/span><\/th>\n    <th class=\"tg-c3ow\" colspan=\"2\"><span style=\"font-weight:bolder;background-color:transparent\">Classe D<\/span><\/th>\n  <\/tr>\n  <tr>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qmin<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qt<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qmin<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qt<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qmin<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qt<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qmin<\/span><br><span style=\"font-weight:400;background-color:transparent\">(litres\/hr)<\/span><\/th>\n    <th class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">Qt<\/span><br><span style=\"background-color:transparent\">(litres\/hr)<\/span><\/th>\n  <\/tr>\n<\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">15(\u00bd) <\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">1.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">2.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">7.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">11.5<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">15(\u00bd)<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">1.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">3.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">60<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">150<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">30<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">120<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">15<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">22.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">11.25<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">17.25<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">20(\u00be) <\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">2.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">5.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">100<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">250<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">50<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">200<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">25<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">37.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">18.75<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">28.75<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">25(1)<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">3.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">7<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">140<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">350<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">70<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">280<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">35<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">52.5<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">26.25<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">40.25<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">25(1)<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">6.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">12<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">240<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">600<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">120<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">480<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">60<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">90<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">32(1\u00bd)<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">6.0<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">12<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">240<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">600<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">120<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">480<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">60<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">90<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">40(1\u00bd)<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">10<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">20<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">400<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">1000<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">200<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">800<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">100<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">150<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n    <td class=\"tg-c3ow\"><span style=\"font-weight:400;background-color:transparent\">-<\/span><\/td>\n  <\/tr>\n<\/tbody><\/table>\n\n\n\n<p class=\"wp-block-paragraph\">Quel que soit le niveau du compteur d'eau, les d\u00e9bits communs et les d\u00e9bits de surcharge pour des compteurs de m\u00eame calibre restent coh\u00e9rents. L'erreur maximale tol\u00e9r\u00e9e est d'environ 5% du d\u00e9bit minimum jusqu'\u00e0 la zone basse (\u00e0 l'exclusion du d\u00e9bit limite), et d'environ 2% du d\u00e9bit limite jusqu'\u00e0 la zone haute. Cependant, les caract\u00e9ristiques de mesure varient entre les compteurs d'eau de diff\u00e9rents niveaux de pr\u00e9cision.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La principale diff\u00e9rence entre ces classes r\u00e9side dans les valeurs de Qmin (d\u00e9bit minimum) et Qt (d\u00e9bit de transition), qui d\u00e9terminent la plage de mesure du compteur. La classe A avait la plage de mesure la plus \u00e9troite, tandis que la classe D avait la plus large.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Applications typiques pour diff\u00e9rentes classes de pr\u00e9cision<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Les compteurs de classe 1 (ou classes C et D dans l'ancien syst\u00e8me) sont g\u00e9n\u00e9ralement utilis\u00e9s dans des applications n\u00e9cessitant une grande pr\u00e9cision, telles que :<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Proc\u00e9d\u00e9s industriels n\u00e9cessitant une gestion stricte de l'eau<br>Grands \u00e9tablissements commerciaux<br>Comptage des revenus des services publics dans les zones o\u00f9 le co\u00fbt de l'eau est \u00e9lev\u00e9<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Les compteurs de classe 2 (ou classes A et B dans l'ancien syst\u00e8me) sont plus couramment utilis\u00e9s :<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Applications r\u00e9sidentielles<br>\u00c9tablissements commerciaux de petite ou moyenne taille<br>Mesures d'usage g\u00e9n\u00e9ral pour lesquelles une pr\u00e9cision l\u00e9g\u00e8rement inf\u00e9rieure est acceptable<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.bmagmeter.com\/fr\/des-produits\/\">BMAG Compteur<\/a> peut offrir une large gamme de compteurs d'eau avec des degr\u00e9s de pr\u00e9cision de classe 1 et classe 2 \/classe B et classe C.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">R\u00e9f\u00e9rences:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.iso.org\/standard\/55371.html\" target=\"_blank\" rel=\"noopener\">ISO 4064:2014 <\/a>\"Compteurs d'eau pour l'eau potable froide et l'eau chaude\".<br>OIML R 49:2013 \"Compteurs d'eau pour l'eau potable froide et l'eau chaude\"<br>Normes de la s\u00e9rie C700 de l'AWWA \"Compteurs d'eau froide\".<br>ISO 4064:1993 \"Mesure du d\u00e9bit d'eau dans les conduites ferm\u00e9es - Compteurs d'eau potable froide\"<br>Directive europ\u00e9enne sur les instruments de mesure 2014\/32\/EU<\/p>","protected":false},"excerpt":{"rendered":"<p>Water meter accuracy class is a crucial parameter that defines the precision of a water meter&#8217;s measurements. It indicates the maximum permissible error (MPE) in the meter&#8217;s readings at different flow rates. Simply, it tells us how close the meter&#8217;s measurement is to the actual water volume passing through it. Modern water meter accuracy standards, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5205,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[120],"tags":[],"class_list":["post-5190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/posts\/5190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/comments?post=5190"}],"version-history":[{"count":0,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/posts\/5190\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/media\/5205"}],"wp:attachment":[{"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/media?parent=5190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/categories?post=5190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bmagmeter.com\/fr\/wp-json\/wp\/v2\/tags?post=5190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}