{"id":717,"date":"2023-05-18T10:13:24","date_gmt":"2023-05-18T08:13:24","guid":{"rendered":"https:\/\/www.termics.info\/prodotti\/termocoppie\/"},"modified":"2023-05-26T14:25:41","modified_gmt":"2023-05-26T12:25:41","slug":"thermocouples","status":"publish","type":"page","link":"https:\/\/www.termics.info\/en\/products\/thermocouples\/","title":{"rendered":"Thermocouples"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"my-custom-font\">Thermocouples<\/p>\n\n\n\n<p>A thermocouple basically consists of any two dissimilar metal wires mechanically joined at one end, called the hot junction; the other end \u2013 or cold junction \u2013 is at a known reference temperature (usually 0\u00b0C), which is lower than the temperature of the hot junction.<\/p>\n\n\n\n<p>When the hot junction is heated, this generates an electromotive force that is normally proportional to the temperature. The temperature\/voltage relationship is repeatable.<\/p>\n\n\n\n<p class=\"my-custom-font\">Benefits<\/p>\n\n\n\n<p>Potentially any pair of conductors can be used as a thermocouple, which is why alloys meeting the following requirements have been selected and standardised:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>high emission per \u00b0C<\/li>\n\n\n\n<li>good stability and repeatability<\/li>\n\n\n\n<li>good mechanical properties<\/li>\n\n\n\n<li>low cost<\/li>\n\n\n\n<li>metallurgical purity<\/li>\n\n\n\n<li>temperature\/fem characteristic as linear as possible<\/li>\n<\/ul>\n\n\n\n<p><strong><strong>Here are the most common industrial thermocouples<\/strong><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Type B : (Pt 30% Rh \/ Pt 6% Rh)<\/li>\n\n\n\n<li>Type E : (Chromel \/ Constantan)<\/li>\n\n\n\n<li>Type J : (Iron \/ Constantan)<\/li>\n\n\n\n<li>Type K : (Chromel \/ Alumel)<\/li>\n\n\n\n<li>Type S :&nbsp; (Pt 10% Rh \/ Platinum)<\/li>\n\n\n\n<li>Type R : ( Pt 13% Rh \/ Platinum)<\/li>\n\n\n\n<li>Type T : (Copper \/ Constantan)<\/li>\n\n\n\n<li>Type N : (Nicrosil \/ Nisil)<\/li>\n<\/ul>\n\n\n\n<p><strong><strong>Some thermocouples manufactured for special uses:<\/strong><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Type C: (Tungsten-5 % rhenium \/ tungsten-26 % rhenium)<\/li>\n\n\n\n<li>Nickel\u221218 % Molybdenum versus \u221250 \u00b0C to 1410 \u00b0C Nickel\u22120.8 % Cobalt<\/li>\n<\/ul>\n\n\n\n<div style=\"height:1rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"777\" src=\"https:\/\/www.termics.info\/wp-content\/uploads\/2023\/05\/Tabella-DWG_TC-Color-1024x777.jpg\" alt=\"\" class=\"wp-image-262\" srcset=\"https:\/\/www.termics.info\/wp-content\/uploads\/2023\/05\/Tabella-DWG_TC-Color-1024x777.jpg 1024w, https:\/\/www.termics.info\/wp-content\/uploads\/2023\/05\/Tabella-DWG_TC-Color-300x228.jpg 300w, https:\/\/www.termics.info\/wp-content\/uploads\/2023\/05\/Tabella-DWG_TC-Color-768x583.jpg 768w, https:\/\/www.termics.info\/wp-content\/uploads\/2023\/05\/Tabella-DWG_TC-Color.jpg 1118w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"my-custom-font\">Precision classes<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Type T<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8211; 40\u00b0C to +125\u00b0C<br>\u00b1 0.5\u00b0C<br>+ 125\u00b0C to +350\u00b0C<br>\u00b1 0.004 (t)<\/td><td>&#8211; 40\u00b0C to +135\u00b0C<br>\u00b1 1\u00b0C<br>+ 133\u00b0C to E11 350\u00b0C<br>\u00b1 0.0075 (t)<\/td><\/tr><tr><td><strong>Type E<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8211; 40\u00b0C to +375\u00b0C<br>\u00b1 1.5\u00b0C<br>+ 3755\u00b0C to +800\u00b0C<br>\u00b1 0.004 (t)<\/td><td>&#8211; 40\u00b0C to +333\u00b0C<br>\u00b1 2.5\u00b0C<br>+ 333\u00b0C to +900\u00b0C<br>\u00b1 0.0075 (t)<\/td><\/tr><tr><td><strong>Type J<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8211; 40\u00b0C to +375\u00b0C<br>\u00b1 1.5\u00b0C<br>+ 375\u00b0C to +750\u00b0C<br>\u00b1 0.004 (t)<\/td><td>&#8211; 40\u00b0C to +333\u00b0C<br>\u00b1 2.5\u00b0C<br>+ 333\u00b0C to +750\u00b0C<br>\u00b1 0.0075 (t)<\/td><\/tr><tr><td><strong>Type K, Type N<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8211; 40\u00b0C to +375\u00b0C<br>\u00b1 1.5\u00b0C<br>+ 375\u00b0C to +1000\u00b0C<br>\u00b1 0.004 (t)<\/td><td>&#8211; 40\u00b0C to +333\u00b0C<br>\u00b1 2.5\u00b0C<br>+ 333\u00b0C to +1200\u00b0C<br>\u00b1 0.0075 (t)<\/td><\/tr><tr><td><strong>Type R, Type S<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>0\u00b0C to +1100\u00b0C<br>\u00b1 1\u00b0C<br>+ 1100\u00b0C to +1400\u00b0C<br>\u00b1 0.004 (t)<\/td><td>0\u00b0C to +600\u00b0C<br>\u00b1 1.5\u00b0C<br>+ 600\u00b0C to +1600\u00b0C<br>\u00b1 0.0025 (t)<\/td><\/tr><tr><td><strong>Type B<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8212;<\/td><td>&#8212;<br>&#8212;<br>+ 600\u00b0C to +1700\u00b0C<br>\u00b1 0.0025 (t)<\/td><\/tr><tr><td><strong>Type C<\/strong><br>Temperature range<br>Tolerance<br>Temperature range<br>Tolerance<\/td><td>&#8212;<\/td><td>426\u00b0C to 2 315\u00b0C<br>&#8212;<br>&#8212;<br>\u00b1 0.01 (t)<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:2rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>TYPES OF THERMOCOUPLES<\/strong><\/strong><\/td><td><strong>J,K,T,E,N,W,V,S,R,B<\/strong><\/td><\/tr><tr><td>Sheath Material<\/td><td>AISI 316, 304, 321, ecc&#8230;<\/td><\/tr><tr><td>MGO Sheath Diameter<\/td><td>0,25mm \u00f7 12,5mm<\/td><\/tr><tr><td>Number of Elements<\/td><td>Single, double or triple<\/td><\/tr><tr><td>Operating temperature<\/td><td>&#8211; 200\u00b0C \u00f7+ 1800\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:2rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center my-custom-font has-text-color\" style=\"color:#0052a5\">Click on the thumbnails to view the high resolution version<\/p>\n\n\n\n<div style=\"height:2rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a 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When the hot junction is heated, this generates an [&hellip;]","protected":false},"author":1,"featured_media":579,"parent":714,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-717","page","type-page","status-publish","has-post-thumbnail","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Thermocouples A thermocouple basically consists of any two dissimilar metal wires mechanically joined at one end, called the hot junction; the other end \u2013 or cold junction \u2013 is at a known reference temperature (usually 0\u00b0C), which is lower than the temperature of the hot junction. 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