{"id":4326,"date":"2023-07-14T11:43:00","date_gmt":"2023-07-14T03:43:00","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=4326"},"modified":"2026-04-20T23:52:19","modified_gmt":"2026-04-20T15:52:19","slug":"thermometer-inaccuracy-causes","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/","title":{"rendered":"T\u1ea1i sao nhi\u1ec7t k\u1ebf th\u01b0\u1eddng kh\u00f4ng ch\u00ednh x\u00e1c? \u0110i\u1ec1u g\u00ec g\u00e2y ra sai s\u1ed1 trong vi\u1ec7c \u0111o nhi\u1ec7t \u0111\u1ed9?"},"content":{"rendered":"<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Vi\u1ec7c \u0111o nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u quy tr\u00ecnh, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u00e1c \u0111\u1ecbnh xem ph\u1ea3n \u1ee9ng \u0111\u00e3 ho\u00e0n t\u1ea5t hay ch\u01b0a v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Tuy nhi\u00ean, sai s\u1ed1 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng x\u1ea3y ra do hi\u1ec7n t\u01b0\u1ee3ng truy\u1ec1n nhi\u1ec7t, \u0111\u1ed1i l\u01b0u v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c. Nh\u1eefng nguy\u00ean nh\u00e2n ch\u00ednh l\u00e0 g\u00ec?<\/p>\n<\/blockquote>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"B\u1eadt\/t\u1eaft M\u1ee5c l\u1ee5c\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">B\u1eadt\/T\u1eaft<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7b1e1c;color:#7b1e1c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7b1e1c;color:#7b1e1c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/#1-measurement-location\" >1. V\u1ecb tr\u00ed \u0111o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/#2-presence-of-stirring\" >2. C\u00f3 hi\u1ec7n t\u01b0\u1ee3ng khu\u1ea5y<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/#3-open-or-closed-reaction-tank\" >3. B\u1ec3 ph\u1ea3n \u1ee9ng m\u1edf ho\u1eb7c \u0111\u00f3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/#4-excessive-use-of-thermowells\" >4. S\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c c\u00e1c \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-22ecae72493fa30d512e2dfa251ef5f7\" id=\"h-1-measurement-location\"><span class=\"ez-toc-section\" id=\"1-measurement-location\"><\/span>1. V\u1ecb tr\u00ed \u0111o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Trong m\u1ed9t b\u1ec3 ph\u1ea3n \u1ee9ng t\u0129nh, m\u1edf, nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111\u00e1y kh\u00e1c v\u1edbi nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111\u1ec9nh. C\u00e1c gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c g\u1ea7n c\u00e1c c\u1ea1nh kh\u00e1c v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb g\u1ea7n trung t\u00e2m, v\u00e0 nhi\u1ec7t \u0111\u1ed9 g\u1ea7n ngu\u1ed3n nhi\u1ec7t kh\u00e1c v\u1edbi nhi\u1ec7t \u0111\u1ed9 \u1edf nh\u1eefng v\u1ecb tr\u00ed xa h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-f9ca7b5e071d8bd86836bc81227c9ba6\" id=\"h-2-presence-of-stirring\"><span class=\"ez-toc-section\" id=\"2-presence-of-stirring\"><\/span>2. C\u00f3 hi\u1ec7n t\u01b0\u1ee3ng khu\u1ea5y<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>N\u1ebfu b\u1ec3 ph\u1ea3n \u1ee9ng \u0111\u01b0\u1ee3c khu\u1ea5y \u0111\u1ec1u v\u00e0 h\u1ed7n h\u1ee3p ho\u00e0n to\u00e0n \u0111\u1ed3ng nh\u1ea5t, vi\u1ec7c \u0111o nhi\u1ec7t \u0111\u1ed9 s\u1ebd kh\u00f4ng c\u00f2n b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi v\u1ecb tr\u00ed \u0111o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-4719bc47dd7bf76d428658f803eff74a\" id=\"h-3-open-or-closed-reaction-tank\"><span class=\"ez-toc-section\" id=\"3-open-or-closed-reaction-tank\"><\/span>3. B\u1ec3 ph\u1ea3n \u1ee9ng m\u1edf ho\u1eb7c \u0111\u00f3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Trong b\u1ec3 ph\u1ea3n \u1ee9ng m\u1edf, m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh, khi\u1ebfn n\u00f3 d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c y\u1ebfu t\u1ed1 b\u00ean ngo\u00e0i nh\u01b0 t\u1ed1c \u0111\u1ed9 gi\u00f3 v\u00e0 s\u1ef1 \u0111\u1ed1i l\u01b0u kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-4c4ff2d09104f0f0c6d239ba6a1de0df\" id=\"h-4-excessive-use-of-thermowells\"><span class=\"ez-toc-section\" id=\"4-excessive-use-of-thermowells\"><\/span>4. S\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c c\u00e1c \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 tr\u00e1nh l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng khi thay th\u1ebf nhi\u1ec7t k\u1ebf, \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t k\u1ebf th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh t\u1ea1i \u0111i\u1ec3m \u0111o. Tuy nhi\u00ean, n\u1ebfu l\u1eafp \u0111\u1eb7t m\u1ed9t nhi\u1ec7t k\u1ebf c\u00f3 \u1ed1ng b\u1ea3o v\u1ec7 ri\u00eang v\u00e0o b\u00ean trong m\u1ed9t \u1ed1ng b\u1ea3o v\u1ec7 kh\u00e1c, s\u1ebd t\u1ea1o ra nhi\u1ec1u l\u1edbp, d\u1eabn \u0111\u1ebfn gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a k\u1ebft qu\u1ea3 \u0111o.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Temperature measurement is critical in many processes, such as determining whether a reaction is complete and ensuring product quality. However, errors can easily occur due to heat transfer, convection, and other factors. What are the main causes? 1. Measurement location In a static, open reaction tank, the temperature at the bottom differs from that at [&hellip;]<\/p>","protected":false},"author":2,"featured_media":4327,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[72],"class_list":["post-4326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-temperature"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Are Thermometers Inaccurate? Key Causes of Temperature Measurement Errors\uff5cSJ Gauge<\/title>\n<meta name=\"description\" content=\"Temperature measurement errors can occur due to factors such as measurement location, lack of stirring, environmental conditions, and improper installation. Learn the key causes of thermometer inaccuracy and how to improve measurement reliability.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sj-gauge.com\/vi\/thermometer-inaccuracy-causes\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why are thermometers often inaccurate? 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