{"id":26484,"date":"2026-04-27T09:55:55","date_gmt":"2026-04-27T07:55:55","guid":{"rendered":"https:\/\/www.sofraser.com\/?p=26484"},"modified":"2026-05-19T16:13:57","modified_gmt":"2026-05-19T14:13:57","slug":"viscosite-en-ligne-controle-process","status":"publish","type":"post","link":"https:\/\/www.sofraser.com\/fr\/actualites\/viscosite-en-ligne-controle-process\/","title":{"rendered":"TCV &amp; corr\u00e9lation : la cl\u00e9 du contr\u00f4le process"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Les challenges du contr\u00f4le de viscosit\u00e9 en process<\/strong><\/h2>\n\n\n\n<p>La viscosit\u00e9 en ligne est essentielle pour assurer un contr\u00f4le pr\u00e9cis des proc\u00e9d\u00e9s industriels. De nombreux proc\u00e9d\u00e9s et industries utilisent la mesure de la viscosit\u00e9 en laboratoire. Cette m\u00e9thode consiste \u00e0 pr\u00e9lever un \u00e9chantillon et \u00e0 mesurer sa viscosit\u00e9 (n<sub>LAB<\/sub>) en laboratoire, dans des conditions de temp\u00e9rature (temp\u00e9rature de r\u00e9f\u00e9rence: T<sub>R<\/sub> ) et de taux de cisaillement (<img decoding=\"async\" width=\"31\" height=\"19\" src=\"blob:https:\/\/www.sofraser.com\/d9c562e4-fc09-4759-9d48-9a28a3de6984\">-g\u00e9n\u00e9ralement faible) contr\u00f4l\u00e9es et constantes. Lors de la mesure de la viscosit\u00e9 en conditions de proc\u00e9d\u00e9 (<img decoding=\"async\" width=\"15\" height=\"19\" src=\"blob:https:\/\/www.sofraser.com\/037b3518-c71b-4980-974d-998c1f504e1c\">), la temp\u00e9rature (<img decoding=\"async\" width=\"15\" height=\"19\" src=\"blob:https:\/\/www.sofraser.com\/e5342614-e593-420e-9de1-f843f9a2cc5a\">) fluctue et est g\u00e9n\u00e9ralement bien sup\u00e9rieure \u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"19\" src=\"blob:https:\/\/www.sofraser.com\/0d1082e0-6431-4fc7-beae-adbe8d4731c3\">. <\/p>\n\n\n\n<p>De plus, le principe de mesure et les conditions de proc\u00e9d\u00e9 augmentent g\u00e9n\u00e9ralement la vitesse de cisaillement. Il est donc crucial de prendre en compte ces deux param\u00e8tres. <\/p>\n\n\n\n<p>En effet, la temp\u00e9rature a un impact direct sur la viscosit\u00e9. Par ailleurs, les produits non newtoniens pr\u00e9sentent une viscosit\u00e9 d\u00e9pendante du cisaillement. Autrement dit, pour les fluides non newtoniens, l&#8217;installation, la vitesse d&#8217;\u00e9coulement et l&#8217;agitation modifient les propri\u00e9t\u00e9s structurales du fluide, ce qui influe sur sa viscosit\u00e9.<\/p>\n\n\n\n<p>La mesure de la viscosit\u00e9 d&#8217;un produit en conditions de proc\u00e9d\u00e9 diff\u00e8re souvent de celle effectu\u00e9e en laboratoire sur un \u00e9chantillon, en raison des conditions de mesure. Sofraser a d\u00e9velopp\u00e9 une solution innovante combinant deux m\u00e9thodes connues : la viscosit\u00e9 compens\u00e9e en temp\u00e9rature (TCV) \u00e0 temp\u00e9rature de r\u00e9f\u00e9rence suivi d\u2019une corr\u00e9lation. La viscosit\u00e9 en ligne permet de mieux suivre les variations en conditions r\u00e9elles<\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"219\" height=\"325\" src=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-2.png\" alt=\"\" class=\"wp-image-26495\" style=\"width:178px;height:auto\" srcset=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-2.png 219w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-2-202x300.png 202w\" sizes=\"(max-width: 219px) 100vw, 219px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"417\" height=\"271\" src=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-1.png\" alt=\"\" class=\"wp-image-26490\" style=\"width:412px;height:auto\" srcset=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-1.png 417w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-1-300x195.png 300w\" sizes=\"(max-width: 417px) 100vw, 417px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<p>La combinaison des deux m\u00e9thodes permet de prendre en compte les diff\u00e9rences de conditions de mesure et les compensent afin de fournir une valeur de viscosit\u00e9 en ligne comparable \u00e0 la mesure effectu\u00e9e en laboratoire.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Solution \u2013 Les Viscosim\u00e8tres Sofraser<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>Viscosim\u00e8tres de process MIVI \u2013 Installation<\/strong><\/h3>\n\n\n\n<p>Les viscosim\u00e8tres Sofraser MIVI s\u2019adaptent \u00e0 une grande vari\u00e9t\u00e9 de proc\u00e9d\u00e9s, en batch ou en continu, en ligne ou sur r\u00e9acteur. Le sch\u00e9ma ci-dessous illustre les emplacements de montage typiques&nbsp;; d\u2019autres sont possibles.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"859\" height=\"620\" src=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-3.png\" alt=\"\" class=\"wp-image-26500\" style=\"width:586px;height:auto\" srcset=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-3.png 859w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-3-300x217.png 300w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-3-768x554.png 768w\" sizes=\"(max-width: 859px) 100vw, 859px\" \/><\/figure><\/div>\n\n\n<p>La m\u00e9thodologie d\u00e9crite n\u00e9cessite une mesure de la temp\u00e9rature et de la viscosit\u00e9 en conditions de process et le viscosim\u00e8tre MIVI est capable de fournir les deux mesures en m\u00eame temps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>Le Processeur 9710<\/strong><\/h3>\n\n\n\n<p>Les param\u00e8tres de TCV et de corr\u00e9lation sont directement programmables dans le <a href=\"https:\/\/www.sofraser.com\/fr\/produits\/processeurs\/\">processeur 9710<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"361\" src=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-4.png\" alt=\"\" class=\"wp-image-26505\" srcset=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-4.png 480w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-4-300x226.png 300w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p>La mesure de viscosit\u00e9, temp\u00e9rature, TCV et la densit\u00e9 sont directement accessible via la communication RS485 ou via les sorties 4\/20 mA.<\/p>\n\n\n\n<p>Dor\u00e9navant, le syst\u00e8me applique directement les param\u00e8tres TCV et corr\u00e9lation \u00e0 la viscosit\u00e9 mesur\u00e9e en conditions de process. Il permet ainsi de comparer imm\u00e9diatement les r\u00e9sultats aux mesures de laboratoire.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Etape n\u00b01: Viscosit\u00e9 Compens\u00e9e en Temp\u00e9rature (TCV)<\/strong><\/h2>\n\n\n\n<p>La m\u00e9thodologie d\u00e9bute par compenser l\u2019effet de la temp\u00e9rature en calculant la TCV \u00e0 temp\u00e9rature de r\u00e9f\u00e9rence. Dans la plupart des applications industrielles, <img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"19\" src=\"blob:https:\/\/www.sofraser.com\/c5e074ab-59ca-44fe-a2f2-1e6a8417848d\">&nbsp;correspond \u00e0 la temp\u00e9rature de l\u2019\u00e9chantillon dans les conditions de laboratoire.<\/p>\n\n\n\n<p>Le 9710 utilise l\u2019\u00e9quation simplifi\u00e9 de la TCV d\u00e9crite dans la norme ASTM D341. Pour d\u00e9terminer les param\u00e8tres du mod\u00e8le, il est n\u00e9cessaire de conna\u00eetre le comportement en temp\u00e9rature du produit de r\u00e9f\u00e9rence. De plus, ce mod\u00e8le n\u00e9cessite d\u2019avoir la mesure de la temp\u00e9rature et de la viscosit\u00e9 en ligne ainsi que d\u2019une Temp\u00e9rature de R\u00e9f\u00e9rence d\u00e9finie (constante).<\/p>\n\n\n\n<p>Le graphique ci-dessous montre l\u2019effet de la temp\u00e9rature sur la viscosit\u00e9 d\u2019une huile CANNON de r\u00e9f\u00e9rence. Cet \u00e9chantillon sert de fluide de r\u00e9f\u00e9rence. Ses donn\u00e9es permettent de d\u00e9terminer les param\u00e8tres du mod\u00e8le TCV, ensuite impl\u00e9ment\u00e9s dans l\u2019\u00e9lectronique 9710.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"897\" height=\"442\" src=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-5.png\" alt=\"\" class=\"wp-image-26510\" style=\"width:556px;height:auto\" srcset=\"https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-5.png 897w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-5-300x148.png 300w, https:\/\/www.sofraser.com\/app\/uploads\/2026\/04\/image-5-768x378.png 768w\" sizes=\"(max-width: 897px) 100vw, 897px\" \/><\/figure><\/div>\n\n\n<p>Le calcul de TCV \u00e0 Temp\u00e9rature de R\u00e9f\u00e9rence fournit \u00e0 l\u2019utilisateur, une valeur de viscosit\u00e9 qui est ind\u00e9pendante des variations de temp\u00e9rature li\u00e9e au process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Etape n\u00b02: Correlation<\/strong><\/h2>\n\n\n\n<p>La TCV fournie une valeur de viscosit\u00e9 \u00e0 une temp\u00e9rature de r\u00e9f\u00e9rence fix\u00e9e. Ainsi, nous pouvons proc\u00e9der \u00e0 la seconde \u00e9tape de la m\u00e9thodologie qui consiste \u00e0 appliquer une corr\u00e9lation.<\/p>\n\n\n\n<p>Le but d\u2019une corr\u00e9lation est de trouver une relation math\u00e9matique entre deux jeux de donn\u00e9es ou de param\u00e8tres. Dans notre cas, l\u2019objectif est de trouver une relation, un mod\u00e8le entre la mesure de viscosit\u00e9 en laboratoire et la valeur de TCV calcul\u00e9e gr\u00e2ce \u00e0 la mesure de viscosit\u00e9 en ligne.<\/p>\n\n\n\n<p>Dans l\u2019industrie, la corr\u00e9lation permet de prendre en compte les diff\u00e9rences de cisaillement et de relier les mesures de laboratoire aux mesures en ligne \u00e0 temp\u00e9rature \u00e9quivalente.<\/p>\n\n\n\n<p>Pour les fluides newtoniens, une corr\u00e9lation n&#8217;est pas n\u00e9cessaire.Le calcul du TCV fournit une mesure directement comparable aux r\u00e9sultats de laboratoire.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>De nombreux utilisateurs de viscosim\u00e8tres Sofraser ont d\u00e9j\u00e0 mis en \u0153uvre cette solution dans diverses industries. C&#8217;est une alternative id\u00e9ale \u00e0 l&#8217;utilisation d&#8217;analyseurs de viscosit\u00e9 \u00e0 temp\u00e9rature de r\u00e9f\u00e9rence, qui sont complexes et n\u00e9cessitent un investissement plus important. La solution id\u00e9ale permet au viscosim\u00e8tre de processus en ligne de fournir une information directement comparable aux mesures de r\u00e9f\u00e9rence. En plus de prendre en compte l&#8217;effet de la temp\u00e9rature, la m\u00e9thodologie consid\u00e8re \u00e9galement la diff\u00e9rence des conditions de taux de cisaillement. Cette approche s\u2019applique \u00e9galement \u00e0 d\u2019autres grandeurs physiques corr\u00e9l\u00e9es \u00e0 la viscosit\u00e9, ce qui \u00e9largit son champ d\u2019application.<\/p>\n\n\n\n<p>La m\u00e9thodologie expliqu\u00e9e dans cet article a fait l&#8217;objet d&#8217;une pr\u00e9sentation donn\u00e9e par M. St\u00e9phane Millet lors de l&#8217;ATC \u2013 Analyzer Technical Conference \u00e0 Galveston (TX-USA) en 2025.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=hANgoQXTwD0\">La pr\u00e9sentation en vid\u00e9o \u2013 ATC<\/a><br>Pour en savoir plus sur le processeur 9710 et la TCV, lisez l\u2019article suivant : <a href=\"https:\/\/www.petro-online.com\/news\/viscometer\/187\/sofraser\/easy-temperature-compensated-viscosity-tcv-measurement\/52380\">Easy Temperature Compensated Viscosity TCV Measurement<\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>La viscosit\u00e9 en ligne permet de suivre pr\u00e9cis\u00e9ment les variations en conditions de process. Gr\u00e2ce \u00e0 la TCV et \u00e0 la corr\u00e9lation, il devient possible d\u2019obtenir des mesures fiables et directement comparables aux r\u00e9sultats de laboratoire&#8230;. <a class=\"pixel-read-more-link\" href=\"https:\/\/www.sofraser.com\/fr\/actualites\/viscosite-en-ligne-controle-process\/\">Lire plus<\/a><\/p>\n","protected":false},"author":47,"featured_media":26551,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>TCV &amp; corr\u00e9lation : la cl\u00e9 du contr\u00f4le process - sofraser<\/title>\n<meta name=\"description\" content=\"Optimisez votre viscosit\u00e9 en ligne gr\u00e2ce \u00e0 la TCV et \u00e0 la corr\u00e9lation. 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