{"id":2359,"date":"2023-08-29T10:54:39","date_gmt":"2023-08-29T02:54:39","guid":{"rendered":"https:\/\/sj-gauge.com\/?p=2359"},"modified":"2026-04-22T22:32:51","modified_gmt":"2026-04-22T14:32:51","slug":"dial-thermometer-selection-tips","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/vi\/dial-thermometer-selection-tips\/","title":{"rendered":"Nguy\u00ean t\u1eafc l\u1ef1a ch\u1ecdn nhi\u1ec7t k\u1ebf kim: S\u00e1u \u0111i\u1ec3m quan tr\u1ecdng khi mua nhi\u1ec7t k\u1ebf kim!"},"content":{"rendered":"<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1ed9t nhi\u1ec7t k\u1ebf?<\/strong><br>N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u vi\u1ec7c \u0111o nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u1ed5n \u0111\u1ecbnh \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u1ea3 thi\u1ebft b\u1ecb v\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh, vi\u1ec7c l\u1ef1a ch\u1ecdn nhi\u1ec7t k\u1ebf kim ph\u00f9 h\u1ee3p l\u00e0 \u0111i\u1ec1u v\u00f4 c\u00f9ng quan tr\u1ecdng. Vi\u1ec7c ch\u1ecdn sai thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng \u0111\u1ed3ng h\u1ed3, k\u1ebft qu\u1ea3 \u0111o kh\u00f4ng ch\u00ednh x\u00e1c, ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb, t\u1eeb \u0111\u00f3 g\u00e2y gi\u00e1n \u0111o\u1ea1n cho to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<p>V\u1eady, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh xem m\u00ecnh \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c chi\u1ebfc nhi\u1ec7t k\u1ebf kim ph\u00f9 h\u1ee3p nh\u1ea5t hay ch\u01b0a? Trong b\u00e0i vi\u1ebft n\u00e0y, SJ Gauge s\u1ebd chia s\u1ebb m\u1ed9t s\u1ed1 l\u01b0u \u00fd quan tr\u1ecdng khi l\u1ef1a ch\u1ecdn v\u00e0 h\u01b0\u1edbng d\u1eabn b\u1ea1n qua s\u00e1u y\u1ebfu t\u1ed1 ch\u00ednh m\u00e0 b\u1ea1n kh\u00f4ng n\u00ean b\u1ecf qua khi ch\u1ecdn mua nhi\u1ec7t k\u1ebf kim.<\/p>\n\n\n\n<p>N\u1ebfu qu\u00fd kh\u00e1ch c\u00f3 th\u00eam b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc n\u00e0o v\u1ec1 nhi\u1ec7t k\u1ebf kim, vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi SJ Gauge b\u1ea5t c\u1ee9 l\u00fac n\u00e0o. \u0110\u1ed9i ng\u0169 chuy\u00ean nghi\u1ec7p c\u1ee7a ch\u00fang t\u00f4i s\u1ebd \u0111\u1ec1 xu\u1ea5t gi\u1ea3i ph\u00e1p \u0111o nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p nh\u1ea5t d\u1ef1a tr\u00ean nhu c\u1ea7u \u1ee9ng d\u1ee5ng c\u1ee7a qu\u00fd kh\u00e1ch, gi\u00fap qu\u00fd kh\u00e1ch \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn v\u00e0 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/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\/dial-thermometer-selection-tips\/#1-dial-size-of-dial-thermometers\" >1. K\u00edch th\u01b0\u1edbc m\u1eb7t s\u1ed1 c\u1ee7a nhi\u1ec7t k\u1ebf m\u1eb7t s\u1ed1<\/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\/dial-thermometer-selection-tips\/#2-scale-range-of-dial-thermometers-measuring-range\" >2. Ph\u1ea1m vi \u0111o c\u1ee7a nhi\u1ec7t k\u1ebf kim (Ph\u1ea1m vi \u0111o)<\/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\/dial-thermometer-selection-tips\/#3-connection-location-of-dial-thermometers\" >3. V\u1ecb tr\u00ed k\u1ebft n\u1ed1i c\u1ee7a nhi\u1ec7t k\u1ebf kim<\/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\/dial-thermometer-selection-tips\/#4-process-connection-of-dial-thermometers\" >4. K\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh c\u1ee7a nhi\u1ec7t k\u1ebf kim<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/vi\/dial-thermometer-selection-tips\/#5-stem-of-dial-thermometers-thermal-probe\" >5. Th\u00e2n c\u1ee7a nhi\u1ec7t k\u1ebf kim (\u0111\u1ea7u d\u00f2 nhi\u1ec7t)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/vi\/dial-thermometer-selection-tips\/#6-thermowells-and-protection-tubes\" >6. \u1ed0ng b\u1ea3o v\u1ec7 nhi\u1ec7t v\u00e0 \u1ed1ng b\u1ea3o v\u1ec7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sj-gauge.com\/vi\/dial-thermometer-selection-tips\/#further-information\" >Th\u00f4ng tin th\u00eam<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-e0eb55a0b58763ff7ca691068aa075c9\" id=\"h-1-dial-size-of-dial-thermometers\"><span class=\"ez-toc-section\" id=\"1-dial-size-of-dial-thermometers\"><\/span>1. K\u00edch th\u01b0\u1edbc m\u1eb7t s\u1ed1 c\u1ee7a nhi\u1ec7t k\u1ebf m\u1eb7t s\u1ed1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p cho m\u1eb7t \u0111\u1ed3ng h\u1ed3 nhi\u1ec7t k\u1ebf?<\/strong><\/p>\n\n\n\n<p>Khi l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 nhi\u1ec7t k\u1ebf, kho\u1ea3ng c\u00e1ch quan s\u00e1t v\u00e0 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t s\u1eb5n c\u00f3 l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 c\u1ea7n \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u. Nh\u00ecn chung, kho\u1ea3ng c\u00e1ch gi\u1eefa nhi\u1ec7t k\u1ebf v\u00e0 ng\u01b0\u1eddi quan s\u00e1t c\u00e0ng xa th\u00ec m\u1eb7t \u0111\u1ed3ng h\u1ed3 c\u00e0ng c\u1ea7n ph\u1ea3i l\u1edbn h\u01a1n \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng \u0111\u1ecdc v\u00e0 gi\u00fap vi\u1ec7c theo d\u00f5i tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. \u0110\u1ed3ng th\u1eddi, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u0111\u1ea3m b\u1ea3o c\u00f3 \u0111\u1ee7 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 l\u1eafp \u0111\u1eb7t ho\u1eb7c k\u1ebft qu\u1ea3 \u0111o kh\u00f4ng ch\u00ednh x\u00e1c do m\u1eb7t \u0111\u1ed3ng h\u1ed3 qu\u00e1 l\u1edbn. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 nhi\u1ec7t k\u1ebf common do SJ Gauge cung c\u1ea5p.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 inch (25 mm)<\/li>\n\n\n\n<li>1 \u00bd inch (40 mm)<\/li>\n\n\n\n<li>2 inch (50 mm)<\/li>\n\n\n\n<li>2 \u00bd inch (63 mm)<\/li>\n\n\n\n<li>3 inch (75 mm)<\/li>\n\n\n\n<li>4 inch (100 mm)<\/li>\n\n\n\n<li>6 inch (150 mm)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-1024x724.jpg\" alt=\"\" class=\"wp-image-2360\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-2048x1448.jpg 2048w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/01_SJ_Gauge_dial_measurement_EN-600x424.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-49090e900af67c0a7e72b1cd43b259d3\" id=\"h-2-scale-range-of-dial-thermometers-measuring-range\"><span class=\"ez-toc-section\" id=\"2-scale-range-of-dial-thermometers-measuring-range\"><\/span>2. Ph\u1ea1m vi \u0111o c\u1ee7a nhi\u1ec7t k\u1ebf kim (Ph\u1ea1m vi \u0111o)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p? <\/strong><\/p>\n\n\n\n<p>Khi l\u1ef1a ch\u1ecdn nhi\u1ec7t k\u1ebf, d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ph\u1ea3i d\u1ef1a tr\u00ean d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n. N\u00ean \u0111\u1ea3m b\u1ea3o r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng hai ph\u1ea7n ba d\u1ea3i \u0111o to\u00e0n ph\u1ea7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 r\u00f5 n\u00e9t khi \u0111\u1ecdc v\u00e0 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o. Vi\u1ec7c ch\u1ecdn d\u1ea3i nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 r\u00f5 n\u00e9t k\u00e9m, t\u0103ng sai s\u1ed1 \u0111o l\u01b0\u1eddng ho\u1eb7c th\u1eadm ch\u00ed l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb. V\u00ed d\u1ee5: n\u1ebfu nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a b\u1ea1n n\u1eb1m trong kho\u1ea3ng t\u1eeb +10\u00b0C \u0111\u1ebfn +90\u00b0C, th\u00ec n\u00ean s\u1eed d\u1ee5ng nhi\u1ec7t k\u1ebf c\u00f3 d\u1ea3i \u0111o t\u1eeb 0\u00b0C \u0111\u1ebfn +100\u00b0C. SJ Gauge c\u0169ng cung c\u1ea5p c\u00e1c d\u1ea3i nhi\u1ec7t \u0111\u1ed9 d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n BS EN 13190, nh\u01b0 \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Ph\u1ea1m vi hi\u1ec3n th\u1ecb c\u1ee7a \u0111\u1ed3ng h\u1ed3 nhi\u1ec7t k\u1ebf<br>(\u0110\u01a1n v\u1ecb: \u00b0C)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 th\u00f4ng th\u01b0\u1eddng<br>(\u0110\u01a1n v\u1ecb: \u00b0C)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-20 \u2026 +40<br>-20 \u2026 +60<br>-20 \u2026 +120<\/td><td class=\"has-text-align-center\" data-align=\"center\">-10 \u2026 +30<br>-10 \u2026 +50<br>-10 \u2026 +110<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-30 \u2026 +30<br>-30 \u2026 +50<br>-30 \u2026 +70<\/td><td class=\"has-text-align-center\" data-align=\"center\">-20 \u2026 +20<br>-20 \u2026 +40<br>-20 \u2026 +60<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-40 \u2026 +40<br>-40 \u2026 +60<br>-100 \u2026 +60<\/td><td class=\"has-text-align-center\" data-align=\"center\">-30 \u2026 +30<br>-30 \u2026 +50<br>-80 \u2026 +40<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0 \u2026 60<br>0 \u2026 80<br>0 \u2026 100<\/td><td class=\"has-text-align-center\" data-align=\"center\">10 \u2026 50<br>10 \u2026 70<br>10 \u2026 90<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0 \u2026 120<br>0 \u2026 160<br>0 \u2026 200<\/td><td class=\"has-text-align-center\" data-align=\"center\">10 \u2026 110<br>20 \u2026 140<br>30 \u2026 180<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0 \u2026 250<br>0 \u2026 300<br>0 \u2026 400<\/td><td class=\"has-text-align-center\" data-align=\"center\">30 \u2026 220<br>30 \u2026 270<br>50 \u2026 350<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0 \u2026 500<br>0 \u2026 600<br>0 \u2026 700<\/td><td class=\"has-text-align-center\" data-align=\"center\">50 \u2026 450<br>100 \u2026 500<br>100 \u2026 600<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">50 \u2026 650<br>100 \u2026 700<\/td><td class=\"has-text-align-center\" data-align=\"center\">150 \u2026 550<br>200 \u2026 600<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ngo\u00e0i k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 v\u00e0 d\u1ea3i nhi\u1ec7t \u0111\u1ed9, c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c d\u1ea3i thang nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. Khi x\u00e1c nh\u1eadn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1edbi nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb, b\u1ea1n n\u00ean ch\u1ecdn d\u1ea3i c\u00f3 gi\u1edbi h\u1ea1n tr\u00ean g\u1ea7n v\u1edbi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 d\u1ea3i ti\u00eau chu\u1ea9n, b\u1ea1n n\u00ean ch\u1ecdn d\u1ea3i cao h\u01a1n ti\u1ebfp theo.<\/p>\n\n\n\n<p>Vi\u1ec7c ch\u1ecdn d\u1ea3i nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t \u0111o l\u01b0\u1eddng. D\u1ea3i nhi\u1ec7t \u0111\u1ed9 qu\u00e1 r\u1ed9ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 d\u1ec5 \u0111\u1ecdc c\u1ee7a k\u1ebft qu\u1ea3, trong khi d\u1ea3i nhi\u1ec7t \u0111\u1ed9 qu\u00e1 h\u1eb9p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng qu\u00e1 nhi\u1ec7t, h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb ho\u1eb7c th\u1eadm ch\u00ed l\u00e0m h\u1ecfng \u0111\u1ed3ng h\u1ed3. N\u1ebfu b\u1ea1n ch\u01b0a ch\u1eafc ch\u1eafn v\u1ec1 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh, vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi SJ Gauge \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n c\u00e1c gi\u1ea3i ph\u00e1p \u0111o nhi\u1ec7t \u0111\u1ed9 chuy\u00ean nghi\u1ec7p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-883b62beef752493faf09aa19ab2f8bb\" id=\"h-3-connection-location-of-dial-thermometers\"><span class=\"ez-toc-section\" id=\"3-connection-location-of-dial-thermometers\"><\/span>3. V\u1ecb tr\u00ed k\u1ebft n\u1ed1i c\u1ee7a nhi\u1ec7t k\u1ebf kim<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>C\u00f3 nh\u1eefng lo\u1ea1i gi\u00e1 \u0111\u1ee1 n\u00e0o d\u00e0nh cho nhi\u1ec7t k\u1ebf, v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n? <\/strong><\/p>\n\n\n\n<p>Nhi\u1ec7t k\u1ebf kim th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean ki\u1ec3u l\u1eafp \u0111\u1eb7t v\u00e0 v\u1ecb tr\u00ed k\u1ebft n\u1ed1i. Ba lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m nhi\u1ec7t k\u1ebf l\u1eafp t\u1eeb d\u01b0\u1edbi l\u00ean, nhi\u1ec7t k\u1ebf g\u00f3c \u0111i\u1ec1u ch\u1ec9nh (m\u1ecdi g\u00f3c) v\u00e0 nhi\u1ec7t k\u1ebf k\u1ebft n\u1ed1i ph\u00eda sau. C\u00e1c m\u1eabu k\u1ebft n\u1ed1i ph\u00eda sau c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh lo\u1ea1i c\u00f3 m\u1eb7t b\u00edch v\u00e0 lo\u1ea1i kh\u00f4ng c\u00f3 m\u1eb7t b\u00edch, t\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c c\u00f3 c\u1ea7n m\u1eb7t b\u00edch l\u1eafp \u0111\u1eb7t hay kh\u00f4ng. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf l\u1eafp \u0111\u1eb7t chuy\u00ean d\u1ee5ng h\u01a1n, vui l\u00f2ng tham kh\u1ea3o ti\u00eau chu\u1ea9n BS EN 13190.<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-884707fd wp-block-group-is-layout-grid\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"376\" height=\"376\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/02_SJ_Gauge_bottom_mount_EN.jpg\" alt=\"\" class=\"wp-image-2361\" style=\"width:300px;height:auto\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/02_SJ_Gauge_bottom_mount_EN.jpg 376w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/02_SJ_Gauge_bottom_mount_EN-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/02_SJ_Gauge_bottom_mount_EN-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/02_SJ_Gauge_bottom_mount_EN-100x100.jpg 100w\" sizes=\"(max-width: 376px) 100vw, 376px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-1024x1024.jpg\" alt=\"\" class=\"wp-image-2362\" style=\"width:300px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-1536x1536.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/03_SJ_Gauge_back_mount_EN.jpg 1576w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-1024x1024.jpg\" alt=\"\" class=\"wp-image-2363\" style=\"width:300px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-1536x1536.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/04_SJ_Gauge_adjustable_angle_EN.jpg 1576w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-1024x1024.jpg\" alt=\"\" class=\"wp-image-2364\" style=\"width:300px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-1536x1536.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/05_SJ_Gauge_back_mount_with_flange_EN.jpg 1576w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-44c562400ef185fed4d673f9dfc595da\" id=\"h-4-process-connection-of-dial-thermometers\"><span class=\"ez-toc-section\" id=\"4-process-connection-of-dial-thermometers\"><\/span>4. K\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh c\u1ee7a nhi\u1ec7t k\u1ebf kim<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn k\u00edch th\u01b0\u1edbc \u0111\u1ea7u n\u1ed1i nhi\u1ec7t k\u1ebf ph\u00f9 h\u1ee3p? <\/strong><\/p>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn tr\u01b0\u1edbc \u0111\u00e2y c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 m\u1eb9o l\u1ef1a ch\u1ecdn ren. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc ren c\u1ee7a nhi\u1ec7t k\u1ebf kim, b\u1ea1n c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u0111\u1ea7u n\u1ed1i b\u1eb1ng th\u01b0\u1edbc k\u1eb9p. C\u00e1c lo\u1ea1i ren th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh ren song song v\u00e0 ren c\u00f4n. T\u1ea1i ch\u00e2u \u00c2u v\u00e0 trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p qu\u1ed1c t\u1ebf, ng\u01b0\u1eddi ta ch\u1ec9 s\u1eed d\u1ee5ng ren BSP, trong khi ren NPT ph\u1ed5 bi\u1ebfn h\u01a1n \u1edf B\u1eafc M\u1ef9.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"470\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-1024x470.jpg\" alt=\"\" class=\"wp-image-2365\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-1024x470.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-300x138.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-768x353.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-1536x705.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-2048x941.jpg 2048w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/06_SJ_Gauge_process_connection_size_EN-600x276.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-c0be792a9c50748c46e2488eca08861b\" id=\"h-5-stem-of-dial-thermometers-thermal-probe\"><span class=\"ez-toc-section\" id=\"5-stem-of-dial-thermometers-thermal-probe\"><\/span>5. Th\u00e2n c\u1ee7a nhi\u1ec7t k\u1ebf kim (\u0111\u1ea7u d\u00f2 nhi\u1ec7t)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Th\u00e2n nhi\u1ec7t k\u1ebf l\u00e0 g\u00ec v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3 l\u00e0 g\u00ec? <\/strong><\/p>\n\n\n\n<p>Th\u00e2n c\u1ea3m bi\u1ebfn l\u00e0 b\u1ed9 ph\u1eadn c\u1ea3m bi\u1ebfn c\u1ee7a nhi\u1ec7t k\u1ebf, c\u00f3 ch\u1ee9c n\u0103ng \u0111o nhi\u1ec7t \u0111\u1ed9. Th\u00e2n c\u1ea3m bi\u1ebfn th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb v\u1eadt li\u1ec7u l\u01b0\u1ee1ng kim v\u00e0 c\u00f3 thi\u1ebft k\u1ebf d\u1ea1ng que, d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 th\u00f4ng qua ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp ho\u1eb7c gi\u00e1n ti\u1ebfp v\u1edbi m\u00f4i tr\u01b0\u1eddng qu\u00e1 tr\u00ecnh. C\u00e1c v\u1eadt li\u1ec7u c\u1ee7a Common bao g\u1ed3m th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 316, v\u1edbi \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u1ea3m bi\u1ebfn ti\u00eau chu\u1ea9n kho\u1ea3ng 6,35 mm; ngo\u00e0i ra, c\u0169ng c\u00f3 s\u1eb5n c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt theo y\u00eau c\u1ea7u ri\u00eang.<\/p>\n\n\n\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn chi\u1ec1u d\u00e0i th\u00e2n ph\u00f9 h\u1ee3p? <\/strong><\/p>\n\n\n\n<p>Chi\u1ec1u d\u00e0i c\u1ea7n thi\u1ebft ph\u1ee5 thu\u1ed9c v\u00e0o m\u00f4i tr\u01b0\u1eddng ho\u1eb7c b\u00ecnh ch\u1ee9a \u0111\u01b0\u1ee3c \u0111o. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1ed1i \u01b0u, n\u00ean nh\u00fang ho\u00e0n to\u00e0n th\u00e2n c\u1ea3m bi\u1ebfn v\u00e0o m\u00f4i tr\u01b0\u1eddng, ho\u1eb7c \u00edt nh\u1ea5t l\u00e0 nh\u00fang \u0111\u1ebfn \u0111\u1ed9 s\u00e2u kho\u1ea3ng 1\/3 \u0111\u1ebfn 2\/3 t\u1ed5ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n<p>Do \u0111\u00f3, khi \u0111\u1eb7t h\u00e0ng ho\u1eb7c y\u00eau c\u1ea7u b\u00e1o gi\u00e1, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i x\u00e1c nh\u1eadn chi\u1ec1u s\u00e2u th\u1ef1c t\u1ebf c\u1ee7a b\u1ec3 ch\u1ee9a ho\u1eb7c \u0111\u01b0\u1eddng \u1ed1ng v\u1edbi nh\u00e0 cung c\u1ea5p (l\u01b0u \u00fd: chi\u1ec1u d\u00e0i th\u00e2n t\u1ed1i thi\u1ec3u th\u01b0\u1eddng kho\u1ea3ng 50 mm) v\u00e0 n\u00eau r\u00f5 chi\u1ec1u d\u00e0i y\u00eau c\u1ea7u c\u00f3 bao g\u1ed3m ren (k\u00e8m \u0111\u1ea7u n\u1ed1i) hay kh\u00f4ng bao g\u1ed3m ren (kh\u00f4ng k\u00e8m \u0111\u1ea7u n\u1ed1i).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-1024x724.jpg\" alt=\"\" class=\"wp-image-2366\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-2048x1448.jpg 2048w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_Gauge_stem_measurement_EN-600x424.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-2bba551b3cf5b2f84347f72e17aeb41a\" id=\"h-6-thermowells-and-protection-tubes\"><span class=\"ez-toc-section\" id=\"6-thermowells-and-protection-tubes\"><\/span>6. \u1ed0ng b\u1ea3o v\u1ec7 nhi\u1ec7t v\u00e0 \u1ed1ng b\u1ea3o v\u1ec7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>\u1ed0ng b\u1ea3o v\u1ec7 v\u00e0 \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t l\u00e0 g\u00ec, v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang l\u00e0 g\u00ec? <\/strong><\/p>\n\n\n\n<p>C\u00e1c ph\u1ee5 ki\u1ec7n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c mua ri\u00eang v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00e2n nhi\u1ec7t k\u1ebf kh\u1ecfi s\u1ef1 \u0103n m\u00f2n, m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t cao v\u00e0 va \u0111\u1eadp v\u1eadt l\u00fd. Ch\u00fang c\u0169ng cho ph\u00e9p th\u00e1o nhi\u1ec7t k\u1ebf ra \u0111\u1ec3 v\u1ec7 sinh, b\u1ea3o tr\u00ec ho\u1eb7c thay th\u1ebf m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft h\u1ec7 th\u1ed1ng. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf c\u1ea5u tr\u00fac c\u1ee7a ch\u00fang: \u1ed1ng b\u1ea3o v\u1ec7 th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb \u1ed1ng r\u1ed7ng c\u00f3 \u0111\u1ea7u h\u00e0n k\u00edn, trong khi \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t k\u1ebf \u0111\u01b0\u1ee3c gia c\u00f4ng t\u1eeb v\u1eadt li\u1ec7u bar nguy\u00ean kh\u1ed1i, mang l\u1ea1i \u0111\u1ed9 b\u1ec1n cao h\u01a1n nh\u01b0ng v\u1edbi chi ph\u00ed cao h\u01a1n.<\/p>\n\n\n\n<p><strong>B\u1ea1n c\u1ea7n l\u01b0u \u00fd nh\u1eefng \u0111i\u1ec1u g\u00ec khi s\u1eed d\u1ee5ng \u1ed1ng b\u1ea3o v\u1ec7 ho\u1eb7c \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t? <\/strong><\/p>\n\n\n\n<p>Do c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y t\u1ea1o th\u00e0nh m\u1ed9t b\u1ed9 truy\u1ec1n nhi\u1ec7t barrier gi\u1eefa th\u00e2n nhi\u1ec7t k\u1ebf v\u00e0 m\u00f4i tr\u01b0\u1eddng qu\u00e1 tr\u00ecnh, ch\u00fang c\u00f3 th\u1ec3 l\u00e0m t\u0103ng th\u1eddi gian ph\u1ea3n h\u1ed3i. Ngo\u00e0i ra, lo\u1ea1i m\u00f4i tr\u01b0\u1eddng, t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y v\u00e0 hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t \u0111\u1ec1u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n nhi\u1ec7t \u0111\u1ebfn b\u1ed9 ph\u1eadn c\u1ea3m bi\u1ebfn.<\/p>\n\n\n\n<p><strong>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn cho \u1ed1ng b\u1ea3o v\u1ec7 v\u00e0 \u1ed1ng \u0111o nhi\u1ec7t \u0111\u1ed9 l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u1ee7a Common bao g\u1ed3m th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 316. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n cao, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Hastelloy v\u00e0 Monel. T\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng, c\u00f3 th\u1ec3 c\u00f3 c\u00e1c t\u00f9y ch\u1ecdn ph\u1ee7 ho\u1eb7c m\u1ea1. Thi\u1ebft k\u1ebf \u1ed1ng b\u1ea3o v\u1ec7 nhi\u1ec7t Common bao g\u1ed3m c\u00e1c lo\u1ea1i \u0111\u1ea7u k\u00edn v\u00e0 lo\u1ea1i \u0111\u1eb7c, v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn h\u00ecnh d\u1ea1ng nh\u01b0 thi\u1ebft k\u1ebf thu\u00f4n nh\u1ecdn, th\u1eb3ng v\u00e0 b\u1eadc thang. C\u00e1c t\u00f9y ch\u1ecdn k\u1ebft n\u1ed1i kh\u00e1c nhau, bao g\u1ed3m k\u1ebft n\u1ed1i ren v\u00e0 k\u1ebft n\u1ed1i m\u1eb7t b\u00edch, c\u0169ng c\u00f3 s\u1eb5n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-1024x724.jpg\" alt=\"\" class=\"wp-image-2367\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-2048x1448.jpg 2048w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_Gauge_stem_n_thermowell_EN-600x424.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-b3efe55556b4c9953740773088568739\" id=\"h-further-information\"><span class=\"ez-toc-section\" id=\"further-information\"><\/span>Th\u00f4ng tin th\u00eam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ngo\u00e0i s\u00e1u y\u1ebfu t\u1ed1 ch\u00ednh \u0111\u1ec3 l\u1ef1a ch\u1ecdn nhi\u1ec7t k\u1ebf kim \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong b\u00e0i vi\u1ebft n\u00e0y, vi\u1ec7c xem x\u00e9t c\u00e1c kh\u00eda c\u1ea1nh nh\u01b0 hi\u1ec7u chu\u1ea9n s\u1ea3n ph\u1ea9m, ki\u1ec3m tra \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng tr\u01b0\u1edbc khi giao h\u00e0ng c\u0169ng r\u1ea5t quan tr\u1ecdng khi ch\u1ecdn mua nhi\u1ec7t k\u1ebf ph\u00f9 h\u1ee3p. V\u1edbi t\u01b0 c\u00e1ch l\u00e0 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng uy t\u00edn t\u1ea1i \u0110\u00e0i Loan, SJ Gauge cung c\u1ea5p c\u00e1c b\u00e1o c\u00e1o hi\u1ec7u chu\u1ea9n tr\u01b0\u1edbc khi giao h\u00e0ng, ki\u1ec3m tra hi\u1ec7u su\u1ea5t v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi s\u1ea3n ph\u1ea9m \u0111\u1ec1u \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng cao c\u0169ng nh\u01b0 c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a qu\u00fd kh\u00e1ch.<\/p>\n\n\n\n<p>V\u1edbi h\u01a1n 20 n\u0103m kinh nghi\u1ec7m chuy\u00ean nghi\u1ec7p trong l\u0129nh v\u1ef1c \u0111o l\u01b0\u1eddng, SJ Gauge t\u1ef1 h\u00e0o cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111o nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 gi\u00fap qu\u00fd kh\u00e1ch h\u00e0ng d\u1ec5 d\u00e0ng l\u1ef1a ch\u1ecdn h\u01a1n. T\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 l\u1eafp r\u00e1p linh ki\u1ec7n cho \u0111\u1ebfn hi\u1ec7u chu\u1ea9n v\u00e0 h\u1ed7 tr\u1ee3 b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3, ch\u00fang t\u00f4i lu\u00f4n n\u1ed7 l\u1ef1c mang \u0111\u1ebfn nh\u1eefng s\u1ea3n ph\u1ea9m \u0111\u00e1ng tin c\u1eady c\u00f9ng d\u1ecbch v\u1ee5 chuy\u00ean nghi\u1ec7p. H\u00e3y li\u00ean h\u1ec7 v\u1edbi SJ Gauge ngay h\u00f4m nay \u0111\u1ec3 t\u00ecm ra gi\u1ea3i ph\u00e1p \u0111o nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi nhu c\u1ea7u kinh doanh c\u1ee7a qu\u00fd kh\u00e1ch.<\/p>\n\n\n\n<p>Sau khi \u0111\u1ecdc h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u1eafc h\u1eb3n b\u1ea1n \u0111\u00e3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch ch\u1ecdn nhi\u1ec7t k\u1ebf kim ph\u00f9 h\u1ee3p. B\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1ch l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch, c\u00e1c m\u1eb9o b\u1ea3o tr\u00ec v\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a k\u1ebft qu\u1ea3 \u0111o nhi\u1ec7t \u0111\u1ed9? H\u00e3y nh\u1ea5p v\u00e0o c\u00e1c li\u00ean k\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 kh\u00e1m ph\u00e1 th\u00eam nhi\u1ec1u t\u00e0i li\u1ec7u h\u1eefu \u00edch kh\u00e1c.<\/p>","protected":false},"excerpt":{"rendered":"<p>How do you choose a thermometer?If your application requires accurate and stable temperature measurement while ensuring the safety of both equipment and operators, selecting the right dial thermometer is essential. Choosing the wrong instrument may result in gauge damage, inaccurate readings, or even equipment downtime that can disrupt overall operations. So, how can you determine [&hellip;]<\/p>","protected":false},"author":2,"featured_media":2368,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[72],"class_list":["post-2359","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>How to Choose a Dial Thermometer: 6 Key Buying Factors | SJ Gauge<\/title>\n<meta name=\"description\" content=\"Learn the 6 key factors for selecting a dial thermometer, including temperature range, stem length, mounting style, material, accuracy, and application environment.\" \/>\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\/dial-thermometer-selection-tips\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dial Thermometer Selection Principles: Six Key Points for Purchasing Dial Thermometers!\" \/>\n<meta property=\"og:description\" content=\"Learn the 6 key factors for selecting a dial thermometer, including temperature range, stem length, mounting style, material, accuracy, and application environment.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sj-gauge.com\/vi\/dial-thermometer-selection-tips\/\" \/>\n<meta property=\"og:site_name\" content=\"SJ Gauge | Pressure Gauges, Thermometers &amp; 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