{"id":2197,"date":"2025-05-14T10:18:00","date_gmt":"2025-05-14T02:18:00","guid":{"rendered":"https:\/\/sj-gauge.com\/?p=2197"},"modified":"2026-04-24T16:32:04","modified_gmt":"2026-04-24T08:32:04","slug":"pressure-gauge-selection-steps","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/vi\/pressure-gauge-selection-steps\/","title":{"rendered":"Nguy\u00ean t\u1eafc l\u1ef1a ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t: 7 b\u01b0\u1edbc \u0111\u1ec3 ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t"},"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 \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<\/strong><br>\u0110\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t, b\u1ea1n c\u1ea7n xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 sau: k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3, d\u1ea3i \u0111o \u00e1p su\u1ea5t (d\u1ea3i thang \u0111o), v\u1eadt li\u1ec7u v\u1ecf, k\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh, v\u1ecb tr\u00ed k\u1ebft n\u1ed1i v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c.<\/p>\n\n\n\n<p>T\u1ea5t c\u1ea3 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn n\u00e0y \u0111\u1ec1u r\u1ea5t quan tr\u1ecdng. Tuy nhi\u00ean, \u0111\u1ed9 ph\u1ee9c t\u1ea1p th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i d\u00e0nh nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 nghi\u00ean c\u1ee9u v\u00e0 t\u00ecm ki\u1ebfm th\u00f4ng s\u1ed1 ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n\n\n\n<p>V\u1edbi h\u01a1n hai th\u1eadp k\u1ef7 kinh nghi\u1ec7m trong ng\u00e0nh thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c t\u1ea1i \u0110\u00e0i Loan, SJ Gauge s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3 b\u1ea1n. Ch\u00fang t\u00f4i \u0111\u00e3 t\u1ed5ng h\u1ee3p b\u1ea3y \u0111i\u1ec3m quan tr\u1ecdng \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn b\u1ea1n trong vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ph\u00f9 h\u1ee3p. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi ch\u00fang t\u00f4i. \u0110\u1ed9i ng\u0169 chuy\u00ean nghi\u1ec7p c\u1ee7a SJ Gauge lu\u00f4n s\u1eb5n s\u00e0ng cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111o l\u01b0\u1eddng \u00e1p su\u1ea5t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 t\u00f9y ch\u1ec9nh b\u1ea5t c\u1ee9 l\u00fac n\u00e0o.<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"7 \u0110i\u1ec3m quan tr\u1ecdng \u0111\u1ec3 ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ph\u00f9 h\u1ee3p! N\u1eafm v\u1eefng c\u00e1c m\u1eb9o ch\u1ecdn l\u1ef1a!\" width=\"1290\" height=\"726\" src=\"https:\/\/www.youtube.com\/embed\/QtNskBwizCI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\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-selection-steps\/#1-dial-size-of-pressure-gauges\" >1. K\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 c\u1ee7a \u0111\u1ed3ng h\u1ed3 \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-selection-steps\/#2-scale-range-of-pressure-gauges\" >2. Ph\u1ea1m vi \u0111o \u00e1p su\u1ea5t c\u1ee7a \u0111\u1ed3ng h\u1ed3 \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-selection-steps\/#3-case-material-of-pressure-gauges\" >3. V\u1eadt li\u1ec7u v\u1ecf c\u1ee7a \u0111\u1ed3ng h\u1ed3 \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-selection-steps\/#4-liquid-filled-or-no-liquid-pressure-gauges\" >4. \u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00f4ng ch\u1ee9a ch\u1ea5t l\u1ecfng:<\/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-selection-steps\/#5-connection-location-of-pressure-gauges\" >5. V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<\/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-selection-steps\/#6-process-connection-of-pressure-gauges\" >6. K\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<\/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\/pressure-gauge-selection-steps\/#7-wetted-part-of-pressure-gauges\" >7. Ph\u1ea7n ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sj-gauge.com\/vi\/pressure-gauge-selection-steps\/#8-further-information\" >8. 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-7a33f954e3ad8b0a8aa24455fadb57fc\" id=\"h-1-dial-size-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"1-dial-size-of-pressure-gauges\"><\/span>1. K\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ph\u00f9 h\u1ee3p?<br>K\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 li\u00ean quan \u0111\u1ebfn kho\u1ea3ng c\u00e1ch quan s\u00e1t v\u00e0 \u0111\u1ed9 d\u1ec5 \u0111\u1ecdc. C\u00e0ng xa \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t so v\u1edbi ng\u01b0\u1eddi quan s\u00e1t, k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 c\u1ea7n thi\u1ebft c\u00e0ng l\u1edbn. Trong th\u1ef1c t\u1ebf, ti\u00eau chu\u1ea9n l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean \u0111\u1ed9 d\u1ec5 \u0111\u1ecdc c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng (quan s\u00e1t thu\u1eadn ti\u1ec7n). C\u00e1c k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3 th\u00f4ng d\u1ee5ng l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1,5 inch (1 \u00bd inch ho\u1eb7c 40 mm)<\/li>\n\n\n\n<li>2 inch (50 mm)<\/li>\n\n\n\n<li>2,5 inch (2 \u00bd inch ho\u1eb7c 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\n\n\n<li>8 inch (200 mm)<\/li>\n\n\n\n<li>10 inch (250 mm)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1754\" height=\"1240\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN.jpg\" alt=\"\" class=\"wp-image-4429\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN.jpg 1754w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-18x12.jpg 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e01EN-600x424.jpg 600w\" sizes=\"(max-width: 1754px) 100vw, 1754px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-02b4f0bc37cf4e4901862e6ac5fba58f\" id=\"h-2-scale-range-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"2-scale-range-of-pressure-gauges\"><\/span>2. Ph\u1ea1m vi \u0111o \u00e1p su\u1ea5t c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ph\u1ea1m vi \u0111o \u00e1p su\u1ea5t \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t?<\/p>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n trong qu\u00e1 tr\u00ecnh \u0111o \u00e1p su\u1ea5t b\u1eb1ng \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed3ng h\u1ed3, th\u01b0\u1eddng l\u1ef1a ch\u1ecdn c\u00e1c \u0111\u1ed3ng h\u1ed3 c\u00f3 m\u1eb7t s\u1ed1 bao ph\u1ee7 ph\u1ea1m vi \u00e1p su\u1ea5t th\u00f4ng d\u1ee5ng t\u1eeb 25% \u0111\u1ebfn 75% tr\u00ean thang \u0111o (nh\u01b0 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong s\u01a1 \u0111\u1ed3 b\u00ean d\u01b0\u1edbi).<\/p>\n\n\n\n<p>V\u00ed d\u1ee5, n\u1ebfu \u00e1p su\u1ea5t th\u00f4ng th\u01b0\u1eddng v\u00e0 \u00e1p su\u1ea5t t\u1ed1i \u0111a n\u1eb1m trong kho\u1ea3ng t\u1eeb 2,5 kg\/cm\u00b2 \u0111\u1ebfn 7,5 kg\/cm\u00b2, n\u00ean mua \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 thang \u0111o t\u1eeb 0 kg\/cm\u00b2 \u0111\u1ebfn 10 kg\/cm\u00b2. Vi\u1ec7c ch\u1ecdn d\u1ea3i \u00e1p su\u1ea5t qu\u00e1 l\u1edbn c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf vi\u1ec7c quan s\u00e1t (n\u1ebfu v\u00f9ng m\u00e0u v\u00e0ng trong s\u01a1 \u0111\u1ed3 qu\u00e1 l\u1edbn), trong khi d\u1ea3i \u00e1p su\u1ea5t qu\u00e1 nh\u1ecf c\u00f3 th\u1ec3 g\u00e2y nguy c\u01a1 qu\u00e1 \u00e1p v\u00e0 v\u1ee1 (n\u1ebfu v\u00f9ng m\u00e0u \u0111\u1ecf trong s\u01a1 \u0111\u1ed3 qu\u00e1 nh\u1ecf), c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t. C\u00e1c \u0111\u01a1n v\u1ecb \u00e1p su\u1ea5t th\u00f4ng d\u1ee5ng bao g\u1ed3m bar, psi, MPa v\u00e0 kgf\/cm\u00b2 (th\u01b0\u1eddng \u0111\u01b0\u1ee3c vi\u1ebft t\u1eaft l\u00e0 kg ho\u1eb7c kg\/cm\u00b2).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-1024x724.jpg\" alt=\"\" class=\"wp-image-2199\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-2048x1448.jpg 2048w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/11\/02_SJ_Gauge_scale_range_of_pressure_gauge-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-69a4c87f199051b326f8d449a8bf8fbd\" id=\"h-3-case-material-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"3-case-material-of-pressure-gauges\"><\/span>3. V\u1eadt li\u1ec7u v\u1ecf c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V\u1eadt li\u1ec7u c\u1ee7a v\u1ecf b\u1ecdc c\u00f3 quan tr\u1ecdng nh\u01b0 th\u1ebf n\u00e0o khi mua \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t?<br>V\u1eadt li\u1ec7u v\u1ecf \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn v\u1eadt li\u1ec7u bao quanh m\u1eb7t \u0111\u1ed3ng h\u1ed3. V\u1eadt li\u1ec7u n\u00e0y c\u1ea7n ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c d\u1ec5 b\u1ecb \u0103n m\u00f2n, ch\u1ea3y ho\u1eb7c ng\u01b0ng t\u1ee5, nh\u1eefng y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t.<\/p>\n\n\n\n<p>Do \u0111\u00f3, tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p cho v\u1ecf \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng n\u00e0o l\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ng\u00e0nh c\u00f4ng nghi\u1ec7p ho\u1eb7c m\u00e1y m\u00f3c c\u1ee7a b\u1ea1n. C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t v\u1ec1 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9, h\u1ea1t b\u1ee5i trong kh\u00f4ng kh\u00ed, ng\u01b0ng t\u1ee5, \u0111\u1ed9 \u1ea9m, h\u01a1i n\u01b0\u1edbc v\u00e0 c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc, t\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5, n\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ph\u1ea3i ng\u00e2m trong ch\u1ea5t l\u1ecfng ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m c\u1ef1c cao, n\u00ean ch\u1ecdn \u0111\u1ed3ng h\u1ed3 c\u00f3 v\u1ecf ch\u1ed1ng n\u01b0\u1edbc ho\u1eb7c \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn t\u1ed1t. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 v\u1ecf b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng ng\u01b0ng t\u1ee5 ho\u1eb7c \u0103n m\u00f2n c\u1ee7a thi\u1ebft b\u1ecb. M\u1eb7t kh\u00e1c, \u0111\u1ed1i v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p trong nh\u00e0 kh\u00f4ng ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft c\u1ef1c \u0111oan, \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 v\u1ecf m\u00e0u \u0111en ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 \u0111\u1ee7 d\u00f9ng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1754\" height=\"1240\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN.jpg\" alt=\"\" class=\"wp-image-4432\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN.jpg 1754w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-18x12.jpg 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e03EN-600x424.jpg 600w\" sizes=\"(max-width: 1754px) 100vw, 1754px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table alignleft is-style-stripes\"><table><thead><tr><th>V\u1eadt li\u1ec7u<\/th><th>\u0110\u1eb7c \u0111i\u1ec3m<\/th><\/tr><\/thead><tbody><tr><td>S\u1eaft s\u01a1n \u0111en<\/td><td>\u2022 Ti\u1ebft ki\u1ec7m h\u01a1n<br>\u2022 Kh\u00f4ng ch\u1ecbu \u0111\u01b0\u1ee3c axit ho\u1eb7c ki\u1ec1m.<br>\u2022 Kh\u00f4ng th\u00edch h\u1ee3p s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi v\u00ec s\u1ea3n ph\u1ea9m kh\u00f4ng ch\u1ed1ng n\u01b0\u1edbc, d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c<\/td><\/tr><tr><td>Th\u00e9p kh\u00f4ng g\u1ec9<\/td><td>\u2022 Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, axit y\u1ebfu, ki\u1ec1m v\u00e0 n\u01b0\u1edbc.<br>\u2022 Ph\u00f9 h\u1ee3p cho m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi<br>\u2022 Hai lo\u1ea1i: Th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 Th\u00e9p kh\u00f4ng g\u1ec9 316<\/td><\/tr><tr><td>Phenolic<\/td><td>\u2022 L\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho c\u00e1c \u1ee9ng d\u1ee5ng trong ng\u00e0nh h\u00f3a d\u1ea7u v\u00e0 ngo\u00e0i kh\u01a1i nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00f3a ch\u1ea5t v\u00e0 mu\u1ed1i.<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-bbc7a7bec06e53ae47f407d862517b2f\" id=\"h-4-liquid-filled-or-no-liquid-pressure-gauges\"><span class=\"ez-toc-section\" id=\"4-liquid-filled-or-no-liquid-pressure-gauges\"><\/span>4. \u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u1ee9a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00f4ng ch\u1ee9a ch\u1ea5t l\u1ecfng:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a d\u1ea7u l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 rung \u0111\u1ed9ng b\u00ean trong (ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00f4i tr\u01b0\u1eddng kh\u00f4ng \u1ed5n \u0111\u1ecbnh) ho\u1eb7c rung \u0111\u1ed9ng b\u00ean ngo\u00e0i (ch\u1eb3ng h\u1ea1n nh\u01b0 dao \u0111\u1ed9ng do \u0111\u01b0\u1eddng \u1ed1ng g\u00e2y ra). Ch\u1ea5t l\u1ecfng b\u00ean trong gi\u00fap gi\u1ea3m ch\u1ea5n hi\u1ec7u qu\u1ea3 s\u1ef1 dao \u0111\u1ed9ng c\u1ee7a kim ch\u1ec9 th\u1ecb, \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 \u0111o \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n. Ngo\u00e0i ra, ch\u1ea5t l\u1ecfng n\u00e0y c\u00f2n c\u00f3 t\u00e1c d\u1ee5ng b\u00f4i tr\u01a1n c\u01a1 c\u1ea5u b\u00e1nh r\u0103ng b\u00ean trong, gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed3ng h\u1ed3.<\/p>\n\n\n\n<p>Glycerin l\u00e0 ch\u1ea5t l\u1ecfng l\u00e0m \u0111\u1ea7y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, trong khi d\u1ea7u silicone c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn cho c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh c\u1ee5 th\u1ec3. Tuy nhi\u00ean, \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u1ee9a d\u1ea7u ti\u1ec1m \u1ea9n nguy c\u01a1 r\u00f2 r\u1ec9. Do \u0111\u00f3, n\u1ebfu \u1ee9ng d\u1ee5ng kh\u00f4ng ph\u1ea3i ch\u1ecbu rung \u0111\u1ed9ng ho\u1eb7c dao \u0111\u1ed9ng m\u1ea1nh, \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t kh\u00f4 (kh\u00f4ng ch\u1ee9a ch\u1ea5t l\u1ecfng) th\u01b0\u1eddng l\u00e0 \u0111\u1ee7.<\/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:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e04EN-1024x724.jpg\" alt=\"\" class=\"wp-image-4431\" style=\"width:500px\" srcset=\"\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-srcset=\"\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-2fc12790f6cd964cfd9ae758194c4586\" id=\"h-5-connection-location-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"5-connection-location-of-pressure-gauges\"><\/span>5. V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t \u0111\u1ed3ng h\u1ed3 \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\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: lo\u1ea1i l\u1eafp d\u1ecdc v\u00e0 lo\u1ea1i l\u1eafp tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n. Lo\u1ea1i l\u1eafp d\u1ecdc c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ck\u1ebft n\u1ed1i ph\u00eda d\u01b0\u1edbi\u201d, trong khi lo\u1ea1i l\u1eafp tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ck\u1ebft n\u1ed1i ph\u00eda sau\u201d. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u1ecdc ch\u1ec9 s\u1ed1 tr\u00ean \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t, c\u1ea7n ph\u1ea3i ki\u1ec3m tra xem lo\u1ea1i \u0111\u1ed3ng h\u1ed3 (ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t) c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng hay kh\u00f4ng.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4441\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-1024x1024.jpg\" alt=\"\" class=\"wp-image-4441\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-front.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4444\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-1024x1024.jpg\" alt=\"\" class=\"wp-image-4444\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-u-clamp-back.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4440\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-1024x1024.jpg\" alt=\"\" class=\"wp-image-4440\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-with-flange.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4442\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-1024x1024.jpg\" alt=\"\" class=\"wp-image-4442\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-center-back-mount.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4443\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-1024x1024.jpg\" alt=\"\" class=\"wp-image-4443\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-with-flange.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"4445\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-1024x1024.jpg\" alt=\"\" class=\"wp-image-4445\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-1024x1024.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount-100x100.jpg 100w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/SJ-Gauge-bottom-mount.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-58052a51e6ae3cf55d814e77f3707100\" id=\"h-6-process-connection-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"6-process-connection-of-pressure-gauges\"><\/span>6. K\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u01b0\u1eddng k\u00ednh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1ch k\u1eb9p ren b\u1eb1ng th\u01b0\u1edbc k\u1eb9p. Ren c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ren th\u1eb3ng (ren song song) v\u00e0 ren c\u00f4n. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t, ti\u00eau chu\u1ea9n BSP (British Standard Pipe) ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c n\u01b0\u1edbc ch\u00e2u \u00c2u v\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, trong khi ti\u00eau chu\u1ea9n NPT (National Pipe Thread) ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf B\u1eafc M\u1ef9.<\/p>\n\n\n\n<p>(\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/www.sj-gauge.com\/vi\/thread-standards-identification\/\">Gi\u1edbi thi\u1ec7u v\u1ec1 Ti\u00eau chu\u1ea9n ren th\u00f4ng d\u1ee5ng cho thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p: B\u1ed1n b\u01b0\u1edbc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ren!<\/a> )<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1754\" height=\"1240\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1.jpg\" alt=\"\" class=\"wp-image-4435\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1.jpg 1754w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-18x12.jpg 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e06EN-1-600x424.jpg 600w\" sizes=\"(max-width: 1754px) 100vw, 1754px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-82ebb6a3c40a9f9aec0e83457a06ffd2\" id=\"h-7-wetted-part-of-pressure-gauges\"><span class=\"ez-toc-section\" id=\"7-wetted-part-of-pressure-gauges\"><\/span>7. Ph\u1ea7n ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>C\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t (bao g\u1ed3m \u1ed1ng Bourdon v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn k\u1ebft n\u1ed1i) ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111o. N\u1ebfu m\u00f4i tr\u01b0\u1eddng \u0111o kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac, \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t s\u1ebd b\u1ecb \u0103n m\u00f2n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c \u0111\u1ed3ng h\u1ed3 v\u00e0 cu\u1ed1i c\u00f9ng g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 an to\u00e0n.<\/p>\n\n\n\n<p>Khu v\u1ef1c m\u00e0u xanh trong h\u00ecnh tr\u00ean ch\u1ec9 ra c\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t. C\u00e1c v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m \u0111\u1ed3ng v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9. \u0110\u1ed3ng c\u00f3 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 ch\u1ed1ng axit\/ki\u1ec1m t\u01b0\u01a1ng \u0111\u1ed1i k\u00e9m h\u01a1n. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 h\u00f3a ch\u1ea5t, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 304 ho\u1eb7c 316. Khi m\u00f4i tr\u01b0\u1eddng \u0111o c\u00f3 \u0111\u1ed9 nh\u1edbt cao, t\u00ednh \u0103n m\u00f2n m\u1ea1nh ho\u1eb7c ch\u1ee9a nhi\u1ec1u t\u1ea1p ch\u1ea5t, n\u00ean s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t m\u00e0ng.<\/p>\n\n\n\n<p>(\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/www.sj-gauge.com\/vi\/metal-connector-corrosion-chart\/\" type=\"link\" id=\"https:\/\/www.sj-gauge.com\/metal-connector-corrosion-chart\/\">B\u1ea3ng kh\u00e1ng \u0103n m\u00f2n cho \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 k\u1ebft n\u1ed1i kim lo\u1ea1i<\/a> \uff09<br>(\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/www.sj-gauge.com\/vi\/corrosion-resistance-chart-for-pressure-gauge-with-plastic-material-connector\/\" type=\"link\" id=\"https:\/\/www.sj-gauge.com\/corrosion-resistance-chart-for-pressure-gauge-with-plastic-material-connector\/\">B\u1ea3ng kh\u00e1ng \u0103n m\u00f2n cho \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 \u201ck\u1ebft n\u1ed1i b\u1eb1ng v\u1eadt li\u1ec7u nh\u1ef1a\u201d<\/a>)<br>(\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/www.sj-gauge.com\/vi\/corrosion-resistance-chart-for-pressure-gauge-withpp-material-connector\/\">B\u1ea3ng kh\u00e1ng \u0103n m\u00f2n cho \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u00f3 \u201ck\u1ebft n\u1ed1i b\u1eb1ng v\u1eadt li\u1ec7u PP\u201d<\/a>)<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1754\" height=\"1240\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN.jpg\" alt=\"\" class=\"wp-image-4434\" style=\"width:500px\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN.jpg 1754w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-300x212.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-1024x724.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-768x543.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-1536x1086.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-18x12.jpg 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/\u6280\u8853\u7814\u8a0e07EN-600x424.jpg 600w\" sizes=\"(max-width: 1754px) 100vw, 1754px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-e92c4fde5f273ce8e5048ac2e0f63776\" id=\"h-8-further-information\"><span class=\"ez-toc-section\" id=\"8-further-information\"><\/span>8. Th\u00f4ng tin th\u00eam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ngo\u00e0i b\u1ea3y \u0111i\u1ec3m quan tr\u1ecdng khi l\u1ef1a ch\u1ecdn \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t, vi\u1ec7c xem x\u00e9t hi\u1ec7u chu\u1ea9n, 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. V\u1edbi t\u01b0 c\u00e1ch l\u00e0 chuy\u00ean gia h\u00e0ng \u0111\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng c\u00f4ng nghi\u1ec7p t\u1ea1i \u0110\u00e0i Loan, SJ Gauge cung c\u1ea5p d\u1ecbch v\u1ee5 hi\u1ec7u chu\u1ea9n, ki\u1ec3m tra v\u00e0 b\u00e1o c\u00e1o ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m tr\u01b0\u1edbc khi giao h\u00e0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m xu\u1ea5t s\u1eafc, \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u t\u00f9y ch\u1ec9nh c\u1ee7a qu\u00fd kh\u00e1ch.<\/p>\n\n\n\n<p>SJ Gauge cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 qu\u1ea3n l\u00fd to\u00e0n b\u1ed9 quy tr\u00ecnh mua s\u1eafm \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t c\u1ee7a b\u1ea1n. T\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p, l\u1eafp r\u00e1p linh ki\u1ec7n, hi\u1ec7u chu\u1ea9n cho \u0111\u1ebfn b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3, ch\u00fang t\u00f4i cam k\u1ebft mang \u0111\u1ebfn cho b\u1ea1n nh\u1eefng s\u1ea3n ph\u1ea9m v\u00e0 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 xu\u1ea5t s\u1eafc. H\u00e3y nh\u1ea5p v\u00e0o \u0111\u00e2y \u0111\u1ec3 li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i v\u00e0 \u0111\u1ec3 SJ Gauge cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u0111o l\u01b0\u1eddng t\u00f9y ch\u1ec9nh t\u1ed1t nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-credit-and-reference\">T\u00edn d\u1ee5ng v\u00e0 Tham chi\u1ebfu:<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/pressure-gauges-and-gauge-attachments?utm_source=chatgpt.com\">ASME B40.100-2022: \u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t v\u00e0 ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t<\/a><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1ed9t \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t? \u0110\u1ec3 ch\u1ecdn \u0111\u00fang \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t, b\u1ea1n c\u1ea7n xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 k\u00edch th\u01b0\u1edbc m\u1eb7t \u0111\u1ed3ng h\u1ed3, d\u1ea3i \u0111o \u00e1p su\u1ea5t (d\u1ea3i thang \u0111o), v\u1eadt li\u1ec7u v\u1ecf, k\u1ebft n\u1ed1i qu\u00e1 tr\u00ecnh, v\u1ecb tr\u00ed k\u1ebft n\u1ed1i v\u00e0 nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c. T\u1ea5t c\u1ea3 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y \u0111\u1ec1u r\u1ea5t quan tr\u1ecdng. Tuy nhi\u00ean, s\u1ef1 ph\u1ee9c t\u1ea1p th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i d\u00e0nh nhi\u1ec1u th\u1eddi gian nghi\u00ean c\u1ee9u \u0111\u1ec3 t\u00ecm ra [...]<\/p>","protected":false},"author":2,"featured_media":2207,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-2197","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 v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Pressure Gauge Selection Principles: 7 Steps to Selecting a Pressure Gauge - SJ Gauge | Pressure Gauges, Thermometers &amp; Pressure Sensors<\/title>\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-selection-steps\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pressure Gauge Selection Principles: 7 Steps to Selecting a Pressure Gauge\" \/>\n<meta property=\"og:description\" content=\"How do you choose a pressure gauge?To properly select a pressure gauge, you will need to consider the pressure gauge dial size, pressure measuring range (scale range), casing material, process connection, connection location, and more. 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