{"id":804,"date":"2014-10-11T14:21:33","date_gmt":"2014-10-11T18:21:33","guid":{"rendered":"http:\/\/rdcc.cashin.ca\/?page_id=804"},"modified":"2017-12-16T06:33:46","modified_gmt":"2017-12-16T11:33:46","slug":"erreurs-possibles-precautions","status":"publish","type":"page","link":"https:\/\/rdccontrol.com\/fr\/thermocouple\/rtd-101\/erreurs-possibles-precautions\/","title":{"rendered":"Erreurs possibles et pr\u00e9cautions"},"content":{"rendered":"
[mk_page_section padding_top=\u00a0\u00bb50″ padding_bottom=\u00a0\u00bb50″ el_class=\u00a0\u00bbintro-thermo-section desktop-section\u00a0\u00bb sidebar=\u00a0\u00bbsidebar-1″][vc_column width=\u00a0\u00bb1\/4″ el_class=\u00a0\u00bbleft-sidebar-column\u00a0\u00bb][mk_custom_sidebar sidebar=\u00a0\u00bbsidebar-18″][\/vc_column][vc_column width=\u00a0\u00bb3\/4″ el_class=\u00a0\u00bbright-side-column\u00a0\u00bb][vc_row_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-column\u00a0\u00bb width=\u00a0\u00bb1\/12″][mk_image src=\u00a0\u00bbhttp:\/\/rdccontrol.com\/wp-content\/uploads\/2017\/12\/4.png\u00a0\u00bb image_size=\u00a0\u00bbfull\u00a0\u00bb][\/vc_column_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-title-column\u00a0\u00bb width=\u00a0\u00bb5\/6″][vc_column_text css=\u00a0\u00bb.vc_custom_1513423985584{margin-bottom: 0px !important;}\u00a0\u00bb]\n

Erreurs possibles et pr\u00e9cautions<\/h2>\n
<\/div>\n[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text css=\u00a0\u00bb.vc_custom_1513423977396{margin-bottom: 0px !important;}\u00a0\u00bb]\n

Les syst\u00e8mes de thermom\u00e8tre \u00e0 r\u00e9sistance sont sensibles \u00e0 trois types d\u2019erreurs :<\/strong><\/p>\n

    \n
  • Les tol\u00e9rances inh\u00e9rentes \u00e0 la r\u00e9sistance elle-m\u00eame,<\/li>\n
  • Les gradients de temp\u00e9rature entre le thermom\u00e8tre et le milieu \u00e0 mesurer,<\/li>\n
  • Les erreurs et d\u00e9fauts pr\u00e9sents dans la liaison entre la sonde et l\u2019instrument de mesure.<\/li>\n<\/ul>\n

    Quelques sources d\u2019erreur sont \u00e9lectriques ; d\u2019autres r\u00e9sultent de la construction m\u00e9canique du thermom\u00e8tre. Les sources d\u2019erreur potentielles incluent l\u2019interchangeabilit\u00e9 et la conformit\u00e9 :<\/p>\n

    La conformit\u00e9 indique quelle quantit\u00e9 il est permis de d\u00e9vier de la courbe standard.[\/vc_column_text][vc_column_text css=\u00a0\u00bb.vc_custom_1512733775085{margin-bottom: 0px !important;}\u00a0\u00bb]La conformit\u00e9 a deux composantes :<\/p>\n

    Une tol\u00e9rance \u00e0 la temp\u00e9rature de r\u00e9f\u00e9rence, habituellement 0\u00b0C, et une tol\u00e9rance sur la pente. Ces \u00e9carts possibles sont d\u00e9finis par la normalisation.<\/p>\n

    Par exemple, la norme DIN 43760 classe B, exige le calibrage \u00e0 moins de 0,12\u03a9 (0.3\u00b0C) \u00e0 0\u00b0C, mais permet \u00e0 la courbe de s\u2019\u00e9carter du nominal 0,00385 de \u00b10.000012 \u03a9\/\u03a9\/\u00b0C. Ceci peut donner des \u00e9carts de 0.8\u00b0C \u00e0 100\u00b0C, 1.3\u00b0C \u00e0 200\u00b0C, et jusqu\u2019\u00e0 3.8\u00b0C \u00e0 700\u00b0C. Il est donc important de conna\u00eetre, avec pr\u00e9cision, les tol\u00e9rances du moyen utilis\u00e9.[\/vc_column_text][\/vc_column][\/mk_page_section][mk_page_section padding_top=\u00a0\u00bb50″ padding_bottom=\u00a0\u00bb50″ el_class=\u00a0\u00bbintro-thermo-section mobile-section\u00a0\u00bb sidebar=\u00a0\u00bbsidebar-1″][vc_column width=\u00a0\u00bb3\/4″ el_class=\u00a0\u00bbright-side-column\u00a0\u00bb][vc_row_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-column\u00a0\u00bb width=\u00a0\u00bb1\/12″][mk_image src=\u00a0\u00bbhttp:\/\/rdccontrol.com\/wp-content\/uploads\/2017\/12\/4.png\u00a0\u00bb image_size=\u00a0\u00bbfull\u00a0\u00bb][\/vc_column_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-title-column\u00a0\u00bb width=\u00a0\u00bb5\/6″][vc_column_text css=\u00a0\u00bb.vc_custom_1513423985584{margin-bottom: 0px !important;}\u00a0\u00bb]\n

    Erreurs possibles et pr\u00e9cautions<\/h2>\n
    <\/div>\n[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text css=\u00a0\u00bb.vc_custom_1513423977396{margin-bottom: 0px !important;}\u00a0\u00bb]\n

    Les syst\u00e8mes de thermom\u00e8tre \u00e0 r\u00e9sistance sont sensibles \u00e0 trois types d\u2019erreurs :<\/strong><\/p>\n

      \n
    • Les tol\u00e9rances inh\u00e9rentes \u00e0 la r\u00e9sistance elle-m\u00eame,<\/li>\n
    • Les gradients de temp\u00e9rature entre le thermom\u00e8tre et le milieu \u00e0 mesurer,<\/li>\n
    • Les erreurs et d\u00e9fauts pr\u00e9sents dans la liaison entre la sonde et l\u2019instrument de mesure.<\/li>\n<\/ul>\n

      Quelques sources d\u2019erreur sont \u00e9lectriques ; d\u2019autres r\u00e9sultent de la construction m\u00e9canique du thermom\u00e8tre. Les sources d\u2019erreur potentielles incluent l\u2019interchangeabilit\u00e9 et la conformit\u00e9 :<\/p>\n

      La conformit\u00e9 indique quelle quantit\u00e9 il est permis de d\u00e9vier de la courbe standard.[\/vc_column_text][vc_column_text css=\u00a0\u00bb.vc_custom_1512733775085{margin-bottom: 0px !important;}\u00a0\u00bb]La conformit\u00e9 a deux composantes :<\/p>\n

      Une tol\u00e9rance \u00e0 la temp\u00e9rature de r\u00e9f\u00e9rence, habituellement 0\u00b0C, et une tol\u00e9rance sur la pente. Ces \u00e9carts possibles sont d\u00e9finis par la normalisation.<\/p>\n

      Par exemple, la norme DIN 43760 classe B, exige le calibrage \u00e0 moins de 0,12\u03a9 (0.3\u00b0C) \u00e0 0\u00b0C, mais permet \u00e0 la courbe de s\u2019\u00e9carter du nominal 0,00385 de \u00b10.000012 \u03a9\/\u03a9\/\u00b0C. Ceci peut donner des \u00e9carts de 0.8\u00b0C \u00e0 100\u00b0C, 1.3\u00b0C \u00e0 200\u00b0C, et jusqu\u2019\u00e0 3.8\u00b0C \u00e0 700\u00b0C. Il est donc important de conna\u00eetre, avec pr\u00e9cision, les tol\u00e9rances du moyen utilis\u00e9.[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/4″ el_class=\u00a0\u00bbleft-sidebar-column\u00a0\u00bb][mk_custom_sidebar sidebar=\u00a0\u00bbsidebar-18″][\/vc_column][\/mk_page_section]\n<\/div>","protected":false},"excerpt":{"rendered":"

      [mk_page_section padding_top=\u00a0\u00bb50″ padding_bottom=\u00a0\u00bb50″ el_class=\u00a0\u00bbintro-thermo-section desktop-section\u00a0\u00bb sidebar=\u00a0\u00bbsidebar-1″][vc_column width=\u00a0\u00bb1\/4″ el_class=\u00a0\u00bbleft-sidebar-column\u00a0\u00bb][mk_custom_sidebar sidebar=\u00a0\u00bbsidebar-18″][\/vc_column][vc_column width=\u00a0\u00bb3\/4″ el_class=\u00a0\u00bbright-side-column\u00a0\u00bb][vc_row_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-column\u00a0\u00bb width=\u00a0\u00bb1\/12″][mk_image src=\u00a0\u00bbhttp:\/\/rdccontrol.com\/wp-content\/uploads\/2017\/12\/4.png\u00a0\u00bb image_size=\u00a0\u00bbfull\u00a0\u00bb][\/vc_column_inner][vc_column_inner el_class=\u00a0\u00bbnumber-icon-title-column\u00a0\u00bb width=\u00a0\u00bb5\/6″][vc_column_text css=\u00a0\u00bb.vc_custom_1513423985584{margin-bottom: 0px !important;}\u00a0\u00bb] Erreurs possibles et pr\u00e9cautions [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text css=\u00a0\u00bb.vc_custom_1513423977396{margin-bottom: 0px !important;}\u00a0\u00bb] Les syst\u00e8mes de thermom\u00e8tre \u00e0 r\u00e9sistance sont sensibles \u00e0 trois types d\u2019erreurs : Les tol\u00e9rances inh\u00e9rentes \u00e0 la r\u00e9sistance elle-m\u00eame, Les gradients de temp\u00e9rature entre le thermom\u00e8tre […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":599,"menu_order":42,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-804","page","type-page","status-publish","hentry"],"yoast_head":"\nErreurs possibles et pr\u00e9cautions - 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