{"id":5719,"date":"2026-08-21T15:54:32","date_gmt":"2026-08-21T07:54:32","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=5719"},"modified":"2026-08-22T22:05:14","modified_gmt":"2026-08-22T14:05:14","slug":"pressure-gauge-frequent-failure","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/vi\/pressure-gauge-frequent-failure\/","title":{"rendered":"T\u1ea1i sao \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t l\u1ea1i hay h\u1ecfng? Rung \u0111\u1ed9ng c\u00f3 th\u1ec3 l\u00e0 nguy\u00ean nh\u00e2n l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a ch\u00fang."},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1086\" height=\"1448\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean.png\" alt=\"Pressure gauge installed directly on vibrating hydraulic machinery\" class=\"wp-image-5732\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean.png 1086w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean-225x300.png 225w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean-768x1024.png 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean-9x12.png 9w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean-300x400.png 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-vibration-installation-clean-600x800.png 600w\" sizes=\"(max-width: 1086px) 100vw, 1086px\" \/><figcaption class=\"wp-element-caption\">\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c g\u1eafn tr\u1ef1c ti\u1ebfp tr\u00ean thi\u1ebft b\u1ecb th\u1ee7y l\u1ef1c c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c rung \u0111\u1ed9ng c\u01a1 h\u1ecdc li\u00ean t\u1ee5c.<\/figcaption><\/figure>\n\n\n\n<p>\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t b\u1ecb h\u1ecfng ngay sau khi l\u1eafp \u0111\u1eb7t kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. S\u1ef1 rung \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb, s\u1ef1 dao \u0111\u1ed9ng \u00e1p su\u1ea5t, \u00e1p su\u1ea5t qu\u00e1 cao t\u1ee9c th\u1eddi v\u00e0 ph\u1ea1m vi \u0111o kh\u00f4ng ch\u00ednh x\u00e1c \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 hao m\u00f2n s\u1edbm b\u00ean trong \u0111\u1ed3ng h\u1ed3 \u0111o.<\/p>\n\n\n\n<p>N\u1ebfu nhi\u1ec1u \u0111\u1ed3ng h\u1ed3 \u0111o b\u1ecb h\u1ecfng t\u1ea1i c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t, \u0111\u1eebng ch\u1ec9 thay th\u1ebf thi\u1ebft b\u1ecb. H\u00e3y \u0111i\u1ec1u tra c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng g\u00e2y ra s\u1ef1 h\u01b0 h\u1ecfng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i.<\/p>\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\/pressure-gauge-frequent-failure\/#common-causes-of-pressure-gauge-failure\" >C\u00e1c nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p g\u00e2y h\u1ecfng \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t<\/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\/pressure-gauge-frequent-failure\/#can-liquid-filling-extend-pressure-gauge-service-life\" >Li\u1ec7u vi\u1ec7c \u0111\u1ed5 \u0111\u1ea7y ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<\/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\/pressure-gauge-frequent-failure\/#when-should-a-pressure-gauge-be-replaced\" >Khi n\u00e0o c\u1ea7n thay th\u1ebf \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<\/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\/pressure-gauge-frequent-failure\/#international-standards-references\" >T\u00e0i li\u1ec7u tham kh\u1ea3o ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf<\/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\/pressure-gauge-frequent-failure\/#frequently-asked-questions\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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\/pressure-gauge-frequent-failure\/#conclusion\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-common-causes-of-pressure-gauge-failure\"><span class=\"ez-toc-section\" id=\"common-causes-of-pressure-gauge-failure\"><\/span>C\u00e1c nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p g\u00e2y h\u1ecfng \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-continuous-mechanical-vibration\">Rung \u0111\u1ed9ng c\u01a1 h\u1ecdc li\u00ean t\u1ee5c<\/h3>\n\n\n\n<p>S\u1ef1 rung \u0111\u1ed9ng t\u1eeb m\u00e1y b\u01a1m, m\u00e1y n\u00e9n ho\u1eb7c \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 truy\u1ec1n li\u00ean t\u1ee5c v\u00e0o \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e0i m\u00f2n c\u00e1c b\u00e1nh r\u0103ng, kh\u1edbp n\u1ed1i v\u00e0 \u1ed5 tr\u1ee5c kim ch\u1ec9 c\u1ee7a n\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-pressure-pulsation\">S\u1ef1 dao \u0111\u1ed9ng \u00e1p su\u1ea5t<\/h3>\n\n\n\n<p>\u00c1p su\u1ea5t trong b\u01a1m piston v\u00e0 thi\u1ebft b\u1ecb th\u1ee7y l\u1ef1c c\u00f3 th\u1ec3 t\u0103ng gi\u1ea3m nhanh ch\u00f3ng, khi\u1ebfn kim ch\u1ec9 th\u1ecb dao \u0111\u1ed9ng li\u00ean t\u1ee5c trong m\u1ed9t ph\u1ea1m vi r\u1ed9ng v\u00e0 l\u00e0m t\u0103ng t\u1ea3i tr\u1ecdng l\u00ean c\u01a1 c\u1ea5u b\u00ean trong.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-momentary-overpressure-or-water-hammer\">Qu\u00e1 \u00e1p t\u1ee9c th\u1eddi ho\u1eb7c hi\u1ec7n t\u01b0\u1ee3ng b\u00faa n\u01b0\u1edbc<\/h3>\n\n\n\n<p>Vi\u1ec7c \u0111\u00f3ng van nhanh, chu k\u1ef3 kh\u1edfi \u0111\u1ed9ng\/d\u1eebng b\u01a1m ho\u1eb7c nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t v\u1ec1 v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y trong \u0111\u01b0\u1eddng \u1ed1ng c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c xung \u00e1p su\u1ea5t l\u00e0m bi\u1ebfn d\u1ea1ng b\u1ed9 ph\u1eadn c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-incorrect-pressure-range\">Ph\u1ea1m vi \u00e1p su\u1ea5t kh\u00f4ng ch\u00ednh x\u00e1c<\/h3>\n\n\n\n<p>N\u1ebfu \u00e1p su\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng duy tr\u00ec g\u1ea7n m\u1ee9c t\u1ed1i \u0111a, \u0111\u1ed3ng h\u1ed3 \u0111o s\u1ebd ch\u1ecbu t\u1ea3i li\u00ean t\u1ee5c cao h\u01a1n v\u00e0 c\u00f3 bi\u00ean \u0111\u1ed9 an to\u00e0n nh\u1ecf h\u01a1n \u0111\u1ed1i v\u1edbi \u00e1p su\u1ea5t v\u01b0\u1ee3t qu\u00e1 t\u1ee9c th\u1eddi.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"632\" height=\"680\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak.jpg\" alt=\"Damaged pressure gauge with leaked fill fluid and pointer unable to return to zero\" class=\"wp-image-5717\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak.jpg 632w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak-279x300.jpg 279w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak-11x12.jpg 11w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak-300x323.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/pressure-gauge-failure-leak-600x646.jpg 600w\" sizes=\"(max-width: 632px) 100vw, 632px\" \/><figcaption class=\"wp-element-caption\">\u0110\u1ed3ng h\u1ed3 \u0111o b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9, kim ch\u1ec9 b\u1ecb k\u1eb9t ho\u1eb7c kh\u00f4ng tr\u1edf v\u1ec1 v\u1ecb tr\u00ed s\u1ed1 0 sau khi \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-can-liquid-filling-extend-pressure-gauge-service-life\"><span class=\"ez-toc-section\" id=\"can-liquid-filling-extend-pressure-gauge-service-life\"><\/span>Li\u1ec7u vi\u1ec7c \u0111\u1ed5 \u0111\u1ea7y ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng c\u00f3 ch\u1ee9a glycerin ho\u1eb7c d\u1ea7u silicon b\u00ean trong v\u1ecf. Ch\u1ea5t l\u1ecfng n\u00e0y gi\u00fap \u1ed5n \u0111\u1ecbnh kim ch\u1ec9 th\u1ecb, b\u00f4i tr\u01a1n b\u1ed9 m\u00e1y v\u00e0 gi\u1ea3m m\u00e0i m\u00f2n do rung \u0111\u1ed9ng.<\/p>\n\n\n\n<p>Thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi rung \u0111\u1ed9ng c\u01a1 h\u1ecdc v\u00e0 xung \u00e1p th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng kh\u00f4ng th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c m\u1ecdi t\u00ecnh tr\u1ea1ng qu\u00e1 \u00e1p ho\u1eb7c va \u0111\u1eadp do b\u00faa n\u01b0\u1edbc. N\u1ebfu h\u01b0 h\u1ecfng do xung \u00e1p nghi\u00eam tr\u1ecdng, c\u00f3 th\u1ec3 c\u1ea7n l\u1eafp th\u00eam b\u1ed9 gi\u1ea3m ch\u1ea5n \u00e1p su\u1ea5t, b\u1ed9 h\u1ea1n l\u01b0u ho\u1eb7c c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 \u0111\u01b0\u1eddng \u1ed1ng kh\u00e1c.<\/p>\n\n\n\n<p>(S\u1ea3n ph\u1ea9m li\u00ean quan: <a href=\"https:\/\/www.sj-gauge.com\/vi\/product\/pra-sb\/\">PRA-SB | B\u1ed9 gi\u1ea3m ch\u1ea5n \u00e1p su\u1ea5t<\/a>)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1086\" height=\"1449\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo.png\" alt=\"Industrial liquid-filled pressure gauge used to damp vibration and pressure pulsation\" class=\"wp-image-5724\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo.png 1086w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-225x300.png 225w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-767x1024.png 767w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-768x1025.png 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-9x12.png 9w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-300x400.png 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/08\/liquid-filled-pressure-gauge-no-logo-600x801.png 600w\" sizes=\"(max-width: 1086px) 100vw, 1086px\" \/><figcaption class=\"wp-element-caption\">\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng l\u00e0m gi\u1ea3m chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a kim ch\u1ec9 th\u1ecb v\u00e0 gi\u00fap gi\u1ea3m hao m\u00f2n do rung \u0111\u1ed9ng v\u00e0 xung \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng g\u00e2y ra.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-when-should-a-pressure-gauge-be-replaced\"><span class=\"ez-toc-section\" id=\"when-should-a-pressure-gauge-be-replaced\"><\/span>Khi n\u00e0o c\u1ea7n thay th\u1ebf \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kim ch\u1ec9 th\u1ecb kh\u00f4ng tr\u1edf v\u1ec1 v\u1ecb tr\u00ed s\u1ed1 0 sau khi t\u1eaft m\u00e1y v\u00e0 x\u1ea3 \u00e1p su\u1ea5t.<\/li>\n\n\n\n<li>Kim ch\u1ec9 th\u1ecb b\u1ecb k\u1eb9t ho\u1eb7c di chuy\u1ec3n kh\u00f4ng \u0111\u1ec1u.<\/li>\n\n\n\n<li>C\u00e1c k\u1ebft qu\u1ea3 \u0111o \u1edf c\u00f9ng m\u1ed9t \u00e1p su\u1ea5t l\u1ea1i cho th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3.<\/li>\n\n\n\n<li>V\u1ecf m\u00e1y, c\u1eeda s\u1ed5 ho\u1eb7c k\u1ebft n\u1ed1i quy tr\u00ecnh b\u1ecb h\u1ecfng.<\/li>\n\n\n\n<li>M\u1ed9t l\u01b0\u1ee3ng l\u1edbn dung d\u1ecbch l\u00e0m \u0111\u1ea7y \u0111\u00e3 b\u1ecb r\u00f2 r\u1ec9.<\/li>\n\n\n\n<li>K\u1ebft qu\u1ea3 hi\u1ec7u chu\u1ea9n v\u01b0\u1ee3t qu\u00e1 sai s\u1ed1 cho ph\u00e9p.<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu thi\u1ebft b\u1ecb \u0111o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch an to\u00e0n thi\u1ebft b\u1ecb ho\u1eb7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng, ch\u1ec9 ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng l\u00e0 kh\u00f4ng \u0111\u1ee7. C\u1ea7n hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb th\u01b0\u1eddng xuy\u00ean theo quy tr\u00ecnh b\u1ea3o tr\u00ec v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u01a1 s\u1edf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-international-standards-references\"><span class=\"ez-toc-section\" id=\"international-standards-references\"><\/span>T\u00e0i li\u1ec7u tham kh\u1ea3o ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>C\u00e1c ti\u00eau chu\u1ea9n sau \u0111\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m t\u00e0i li\u1ec7u tham kh\u1ea3o \u0111\u1ec3 l\u1ef1a ch\u1ecdn, l\u1eafp \u0111\u1eb7t ho\u1eb7c ki\u1ec3m \u0111\u1ecbnh \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t cho \u1ee9ng d\u1ee5ng n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ti\u00eau chu\u1ea9n EN 837-1:<\/strong> C\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 xem x\u00e9t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 th\u1eed nghi\u1ec7m hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t \u1ed1ng Bourdon.<\/li>\n\n\n\n<li><strong>ASME B40.100-2022:<\/strong> N\u1ed9i dung bao g\u1ed3m an to\u00e0n, c\u1ea5u t\u1ea1o, l\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t, c\u0169ng nh\u01b0 c\u00e1c ph\u1ee5 ki\u1ec7n c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t nh\u01b0 b\u1ed9 gi\u1ea3m ch\u1ea5n.<\/li>\n\n\n\n<li><strong>ISO\/IEC 17025:2017:<\/strong> Khi c\u1ea7n \u0111\u00e1nh gi\u00e1 s\u1ef1 tr\u00f4i l\u1ec7ch c\u1ee7a thi\u1ebft b\u1ecb, h\u00e3y y\u00eau c\u1ea7u k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c t\u1eeb ph\u00f2ng th\u00ed nghi\u1ec7m hi\u1ec7u chu\u1ea9n \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 n\u0103ng l\u1ef1c c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ghi ch\u00fa v\u1ec1 ti\u00eau chu\u1ea9n:<\/strong> Ph\u1ea1m vi \u00e1p d\u1ee5ng, phi\u00ean b\u1ea3n v\u00e0 c\u00e1c t\u00e0i li\u1ec7u ch\u1ee9ng nh\u1eadn c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn theo v\u1ecb tr\u00ed thi\u1ebft b\u1ecb, r\u1ee7i ro quy tr\u00ecnh v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt mua s\u1eafm. Vi\u1ec7c tr\u00edch d\u1eabn m\u1ed9t ti\u00eau chu\u1ea9n kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 s\u1ea3n ph\u1ea9m t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn, c\u0169ng kh\u00f4ng thay th\u1ebf vi\u1ec7c x\u00e1c nh\u1eadn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ed1i v\u1edbi m\u1eabu s\u1ea3n ph\u1ea9m \u0111\u00e3 ch\u1ecdn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-is-a-liquid-filled-pressure-gauge-always-more-durable\">Li\u1ec7u \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng lu\u00f4n b\u1ec1n h\u01a1n?<\/h3>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng c\u00f3 l\u1ee3i trong m\u00f4i tr\u01b0\u1eddng c\u00f3 rung \u0111\u1ed9ng ho\u1eb7c xung \u0111\u1ed9ng. Tuy nhi\u00ean, vi\u1ec7c \u0111\u1ed5 \u0111\u1ea7y ch\u1ea5t l\u1ecfng v\u1eabn kh\u00f4ng th\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng n\u1ebfu ph\u1ea1m vi \u00e1p su\u1ea5t, v\u1eadt li\u1ec7u ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t kh\u00f4ng ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-often-should-a-pressure-gauge-be-replaced\">Bao l\u00e2u th\u00ec n\u00ean thay th\u1ebf \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<\/h3>\n\n\n\n<p>Kh\u00f4ng c\u00f3 kho\u1ea3ng th\u1eddi gian thay th\u1ebf c\u1ed1 \u0111\u1ecbnh n\u00e0o. T\u1ea7n su\u1ea5t s\u1eed d\u1ee5ng, \u00e1p su\u1ea5t ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ed9 rung, nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00e1c y\u00eau c\u1ea7u an to\u00e0n \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m. L\u1ecbch tr\u00ecnh thay th\u1ebf n\u00ean d\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 hi\u1ec7u chu\u1ea9n t\u1ea1i ch\u1ed7 v\u00e0 ch\u01b0\u01a1ng tr\u00ecnh qu\u1ea3n l\u00fd r\u1ee7i ro c\u1ee7a c\u01a1 s\u1edf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Khi \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t li\u00ean t\u1ee5c g\u1eb7p s\u1ef1 c\u1ed1, h\u00e3y ki\u1ec3m tra \u0111\u1ed3ng th\u1eddi \u0111\u1ed9 rung, xung \u0111\u1ed9ng, \u00e1p su\u1ea5t qu\u00e1 cao, ph\u1ea1m vi \u00e1p su\u1ea5t v\u00e0 v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t. \u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 gi\u1ea3m s\u1ef1 hao m\u00f2n do rung \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang v\u00e0 b\u1ea3o v\u1ec7 \u0111\u01b0\u1eddng \u1ed1ng v\u1eabn r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p><strong>\u0110\u1ed3ng h\u1ed3 li\u00ean t\u1ee5c h\u1ecfng t\u1ea1i c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t?<\/strong> G\u1eedi cho <a href=\"https:\/\/www.sj-gauge.com\/vi\/request-quote\/\">SJ Gauge<\/a> th\u00f4ng tin v\u1ec1 d\u1ea3i \u00e1p su\u1ea5t, lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 t\u00ecnh tr\u1ea1ng h\u01b0 h\u1ecfng quan s\u00e1t \u0111\u01b0\u1ee3c. \u0110\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i s\u1ebd h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ph\u00f9 h\u1ee3p h\u01a1n.<\/p>\n\n\n\n<p>(<strong>\u0110\u1ecdc th\u00eam:<\/strong> <a href=\"https:\/\/www.sj-gauge.com\/vi\/pressure-gauge-pointer-vibration\/\">V\u00ec sao kim \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t b\u1ecb rung? \u0110\u1ed3ng h\u1ed3 c\u00f3 d\u1ea7u c\u00f3 gi\u00fap c\u1ea3i thi\u1ec7n kh\u00f4ng?<\/a>)<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t c\u00f3 th\u1ec3 h\u1ecfng do rung \u0111\u1ed9ng, xung \u00e1p, qu\u00e1 \u00e1p ho\u1eb7c ch\u1ecdn sai d\u1ea3i \u0111o. T\u00ecm hi\u1ec3u khi n\u00e0o \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t c\u00f3 d\u1ea7u gi\u00fap gi\u1ea3m hao m\u00f2n.<\/p>","protected":false},"author":2,"featured_media":5732,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-5719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pressure"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Do Pressure Gauges Fail So Often? | SJ Gauge<\/title>\n<meta name=\"description\" content=\"Pressure gauges may fail from vibration, pulsation, overpressure, or poor range selection. Learn when a liquid-filled gauge can reduce wear.\" \/>\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\/pressure-gauge-frequent-failure\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Do Pressure Gauges Fail So Often? Vibration May Be Shortening Their Service Life\" \/>\n<meta property=\"og:description\" content=\"Pressure gauges may fail from vibration, pulsation, overpressure, or poor range selection. 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