{"id":16310,"date":"2024-05-27T14:19:05","date_gmt":"2024-05-27T06:19:05","guid":{"rendered":"https:\/\/shchimay.com\/?p=16310"},"modified":"2024-05-31T12:57:53","modified_gmt":"2024-05-31T04:57:53","slug":"control-valve-4-20ma","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/control-valve-4-20ma\/","title":{"rendered":"van \u0111i\u1ec1u khi\u1ec3n 4-20ma"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_50 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/shchimay.com\/vi\/control-valve-4-20ma\/#Loi_ich_cua_viec_su_dung_van_dieu_khien_co_tin_hieu_4-20mA\" title=\"L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA\">L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/shchimay.com\/vi\/control-valve-4-20ma\/#Khac_phuc_su_co_thuong_gap_voi_Van_dieu_khien_su_dung_tin_hieu_4-20mA\" title=\"Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p v\u1edbi Van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p v\u1edbi Van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA<\/a><\/li><\/ul><\/nav><\/div>\n<h1 id=\"benefits-of-using-control-valves-with-4-20ma-signal-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Loi_ich_cua_viec_su_dung_van_dieu_khien_co_tin_hieu_4-20mA\"><\/span>L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nVan \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed trong h\u1ec7 th\u1ed1ng. Nh\u1eefng van n\u00e0y l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m d\u1ea7u kh\u00ed, x\u1eed l\u00fd h\u00f3a ch\u1ea5t, x\u1eed l\u00fd n\u01b0\u1edbc, v.v. M\u1ed9t lo\u1ea1i van \u0111i\u1ec1u khi\u1ec3n ph\u1ed5 bi\u1ebfn \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn l\u00e0 van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 nh\u1eefng l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA v\u00e0 c\u00e1ch ch\u00fang n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/9500-Softener-Filter-Control-Valve-8.png\" alt=\"alt-400\" class=\"wp-image-400\" id=\"i400\" \/><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td colspan=\"4\">B\u1ed9 l\u00e0m m\u1ec1m th\u1ee7 c\u00f4ng SD<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>SD2-R<\/td>\n<td>SD4-R<\/td>\n<td>SD10-R<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra T\u1ed1i \u0110a<\/td>\n<td>4T\/gi\u1edd<\/td>\n<td>7T\/gi\u1edd<\/td>\n<td>15T\/gi\u1edd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u0110\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t, m\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA l\u00e0 m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c cao. T\u00edn hi\u1ec7u 4-20mA cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady gi\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng van. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u1ecb tr\u00ed van \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y v\u00e0 m\u1ee9c \u00e1p su\u1ea5t. Do \u0111\u00f3, c\u00e1c quy tr\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tinh ch\u1ec9nh \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u, gi\u00fap c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 gi\u1ea3m ch\u1ea5t th\u1ea3i.<\/p>\n<p>H\u01a1n n\u1eefa, c\u00e1c van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA mang l\u1ea1i \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi. T\u00edn hi\u1ec7u 4-20mA kh\u00f4ng b\u1ecb nhi\u1ec5u v\u00e0 nhi\u1ec5u \u0111i\u1ec7n, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh ph\u01b0\u01a1ng th\u1ee9c li\u00ean l\u1ea1c c\u00f3 \u0111\u1ed9 tin c\u1eady cao trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p. S\u1ef1 \u1ed5n \u0111\u1ecbnh n\u00e0y \u0111\u1ea3m b\u1ea3o van ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh kh\u1eafc nghi\u1ec7t. Ngo\u00e0i ra, t\u00edn hi\u1ec7u 4-20mA cho ph\u00e9p gi\u00e1m s\u00e1t v\u00e0 \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa, cho ph\u00e9p ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111i\u1ec1u ch\u1ec9nh c\u00e0i \u0111\u1eb7t van t\u1eeb ph\u00f2ng \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m ho\u1eb7c th\u1eadm ch\u00ed t\u1eeb thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/p>\n<p>M\u1ed9t l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3 kh\u00e1c c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA l\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a ch\u00fang v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n \u0111\u1ea1i. Nhi\u1ec1u quy tr\u00ecnh c\u00f4ng nghi\u1ec7p d\u1ef1a v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n tinh vi \u0111\u00f2i h\u1ecfi ph\u1ea3n h\u1ed3i d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 theo th\u1eddi gian th\u1ef1c. T\u00edn hi\u1ec7u 4-20mA l\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i b\u1edfi c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n \u0111\u1ea1i, gi\u00fap vi\u1ec7c t\u00edch h\u1ee3p tr\u1edf n\u00ean li\u1ec1n m\u1ea1ch v\u00e0 \u0111\u01a1n gi\u1ea3n. Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c van \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a hi\u1ec7n c\u00f3, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p>Ngo\u00e0i \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, c\u00e1c van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA c\u00f2n mang l\u1ea1i l\u1ee3i \u00edch v\u1ec1 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. B\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c d\u00f2ng ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed, c\u00e1c van n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh. Kh\u1ea3 n\u0103ng tinh ch\u1ec9nh c\u00e1c tham s\u1ed1 quy tr\u00ecnh b\u1eb1ng t\u00edn hi\u1ec7u 4-20mA cho ph\u00e9p v\u1eadn h\u00e0nh hi\u1ec7u qu\u1ea3 h\u01a1n, d\u1eabn \u0111\u1ebfn ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 mang l\u1ea1i l\u1ee3i \u00edch cho m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p>H\u01a1n n\u1eefa, c\u00e1c van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u00ec t\u00ednh d\u1ec5 b\u1ea3o tr\u00ec v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1. T\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a gi\u00fap c\u00e1c k\u1ef9 thu\u1eadt vi\u00ean b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng ch\u1ea9n \u0111o\u00e1n v\u00e0 gi\u1ea3i quy\u1ebft m\u1ecdi v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 ph\u00e1t sinh v\u1edbi van. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh b\u1ea3o tr\u00ec, gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o van ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong th\u1eddi gian d\u00e0i.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"manual filter water flow control valve for water treatment\" width=\"720\" height=\"540\" src=\"https:\/\/www.youtube.com\/embed\/64mwEw9Sso4?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><\/div>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/AFC2-LCD.jpg\" alt=\"alt-4011\" class=\"wp-image-4011\" id=\"i4011\" \/><br \/>\nT\u00f3m l\u1ea1i, van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u qu\u1ea3, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p. T\u1eeb m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u1ed5n \u0111\u1ecbnh cao \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n \u0111\u1ea1i v\u00e0 l\u1ee3i th\u1ebf v\u1ec1 hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng, c\u00e1c van n\u00e0y \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u00e0 n\u00e2ng cao n\u0103ng su\u1ea5t t\u1ed5ng th\u1ec3. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng l\u1ee3i \u00edch c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n v\u1edbi t\u00edn hi\u1ec7u 4-20mA, c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng cao h\u01a1n, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 b\u1ec1n v\u1eefng v\u1ec1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n<h1 id=\"troubleshooting-common-issues-with-control-valves-using-4-20ma-signal-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Khac_phuc_su_co_thuong_gap_voi_Van_dieu_khien_su_dung_tin_hieu_4-20mA\"><\/span>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p v\u1edbi Van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nVan \u0111i\u1ec1u khi\u1ec3n l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed qua \u0111\u01b0\u1eddng \u1ed1ng. M\u1ed9t lo\u1ea1i van \u0111i\u1ec1u khi\u1ec3n ph\u1ed5 bi\u1ebfn s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA \u0111\u1ec3 v\u1eadn h\u00e0nh, cung c\u1ea5p c\u01a1 ch\u1ebf \u0111i\u1ec1u khi\u1ec3n v\u00e0 ph\u1ea3n h\u1ed3i ch\u00ednh x\u00e1c. Tuy nhi\u00ean, gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb c\u01a1 kh\u00ed n\u00e0o, van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i c\u00e1c v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn c\u00e1c van \u0111i\u1ec1u khi\u1ec3n n\u00e0y v\u00e0 th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1c k\u1ef9 thu\u1eadt kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111\u1ec3 gi\u1ea3i quy\u1ebft ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p>M\u1ed9t v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i v\u1edbi c\u00e1c van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA l\u00e0 h\u00e0nh vi th\u1ea5t th\u01b0\u1eddng. H\u00e0nh vi th\u1ea5t th\u01b0\u1eddng n\u00e0y c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n khi van kh\u00f4ng ph\u1ea3n \u1ee9ng ch\u00ednh x\u00e1c v\u1edbi t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o ho\u1eb7c dao \u0111\u1ed9ng b\u1ea5t ng\u1edd gi\u1eefa c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau. H\u00e0nh vi nh\u01b0 v\u1eady c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 d\u1eabn \u0111\u1ebfn s\u1ef1 thi\u1ebfu hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh c\u00f4ng nghi\u1ec7p. \u0110\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 n\u00e0y, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i ki\u1ec3m tra c\u00e1c k\u1ebft n\u1ed1i d\u00e2y gi\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng van. C\u00e1c k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo ho\u1eb7c b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec5u t\u00edn hi\u1ec7u, d\u1eabn \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng van th\u1ea5t th\u01b0\u1eddng. B\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i an to\u00e0n v\u00e0 \u0111\u00fang c\u00e1ch, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p n\u00e0y v\u00e0 kh\u00f4i ph\u1ee5c ch\u1ee9c n\u0103ng c\u1ee7a van.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>Danh m\u1ee5c<\/td>\n<td>C\u00f4ng su\u1ea5t n\u01b0\u1edbc m3\/h<\/td>\n<td>LCD<\/td>\n<td>LED<\/td>\n<td>BI\u1ec2U T\u01af\u1ee2NG<\/td>\n<td>DIOD<\/td>\n<\/tr>\n<tr>\n<td>ASE2<\/td>\n<td>Van l\u00e0m m\u1ec1m t\u1ef1 \u0111\u1ed9ng ch\u1ee9c n\u0103ng n\u00e2ng cao<\/td>\n<td>2<\/td>\n<td>O<\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td>X<\/td>\n<\/tr>\n<tr>\n<td>ASE4<\/td>\n<td>Van l\u00e0m m\u1ec1m t\u1ef1 \u0111\u1ed9ng ch\u1ee9c n\u0103ng n\u00e2ng cao<\/td>\n<td>4<\/td>\n<td>O<\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td>X<\/td>\n<\/tr>\n<tr>\n<td>ASS2<\/td>\n<td>Van l\u00e0m m\u1ec1m t\u1ef1 \u0111\u1ed9ng<\/td>\n<td>2<\/td>\n<td>O<\/td>\n<td>O<\/td>\n<td>O<\/td>\n<td>O<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>M\u1ed9t th\u00e1ch th\u1ee9c ph\u1ed5 bi\u1ebfn kh\u00e1c m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i \u0111\u1ed1i m\u1eb7t l\u00e0 van \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec3m \u0111\u1eb7t mong mu\u1ed1n. Khi van kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh m\u1eb7c d\u00f9 nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o ch\u00ednh x\u00e1c, n\u00f3 c\u00f3 th\u1ec3 ch\u1ec9 ra s\u1ef1 c\u1ed1 v\u1edbi b\u1ed9 truy\u1ec1n \u0111\u1ed9ng van ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn b\u00ean trong. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, tr\u01b0\u1edbc ti\u00ean ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i x\u00e1c minh r\u1eb1ng t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn van c\u00f3 n\u1eb1m trong ph\u1ea1m vi 4-20mA hay kh\u00f4ng. Nh\u1eefng sai l\u1ec7ch so v\u1edbi ph\u1ea1m vi n\u00e0y c\u00f3 th\u1ec3 ng\u0103n van \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec3m \u0111\u1eb7t mong mu\u1ed1n. Ngo\u00e0i ra, vi\u1ec7c ki\u1ec3m tra hi\u1ec7u chu\u1ea9n c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng van v\u00e0 \u0111i\u1ec1u ch\u1ec9nh n\u00f3 khi c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 gi\u00fap \u0111\u1ea3m b\u1ea3o \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"Automatic Water Softener Control Valve For Water Treatment Softening\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/spy3zgYx4H8?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><\/div>\n<p>R\u00f2 r\u1ec9 xung quanh th\u00e2n van l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u00e1c m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i v\u1edbi van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA. R\u00f2 r\u1ec9 th\u00e2n van c\u00f3 th\u1ec3 do v\u00f2ng \u0111\u1ec7m b\u1ecb m\u00f2n ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn b\u1ecb h\u1ecfng, d\u1eabn \u0111\u1ebfn ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed tho\u00e1t ra ngo\u00e0i c\u1ee5m van. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 c\u00f2n g\u00e2y ra r\u1ee7i ro v\u1ec1 an to\u00e0n t\u1ea1i n\u01a1i l\u00e0m vi\u1ec7c. \u0110\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 n\u00e0y, ng\u01b0\u1eddi v\u1eadn h\u00e0nh n\u00ean ki\u1ec3m tra th\u00e2n van v\u00e0 v\u00f2ng \u0111\u1ec7m xem c\u00f3 d\u1ea5u hi\u1ec7u m\u00f2n ho\u1eb7c h\u01b0 h\u1ecfng n\u00e0o kh\u00f4ng. Thay th\u1ebf c\u00e1c v\u00f2ng \u0111\u1ec7m b\u1ecb m\u00f2n v\u00e0 si\u1ebft ch\u1eb7t b\u1ea5t k\u1ef3 b\u1ed9 ph\u1eadn l\u1ecfng l\u1ebbo n\u00e0o c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ng\u1eeba r\u00f2 r\u1ec9 v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<p>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, van \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 c\u00f3 th\u1eddi gian ph\u1ea3n h\u1ed3i ch\u1eadm, g\u00e2y ra s\u1ef1 ch\u1eadm tr\u1ec5 trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn n\u0103ng su\u1ea5t t\u1ed5ng th\u1ec3. Th\u1eddi gian ph\u1ea3n h\u1ed3i ch\u1eadm c\u00f3 th\u1ec3 l\u00e0 do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 cung c\u1ea5p kh\u00f4ng kh\u00ed kh\u00f4ng \u0111\u1ee7 cho b\u1ed9 truy\u1ec1n \u0111\u1ed9ng ho\u1eb7c ma s\u00e1t qu\u00e1 m\u1ee9c trong c\u1ee5m van. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, ng\u01b0\u1eddi v\u1eadn h\u00e0nh n\u00ean ki\u1ec3m tra ngu\u1ed3n cung c\u1ea5p kh\u00f4ng kh\u00ed cho b\u1ed9 truy\u1ec1n \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u00f3 \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 \u00e1p su\u1ea5t c\u1ea7n thi\u1ebft. Ngo\u00e0i ra, vi\u1ec7c b\u00f4i tr\u01a1n c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a van v\u00e0 ki\u1ec3m tra xem c\u00f3 v\u1eadt c\u1ea3n n\u00e0o c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf chuy\u1ec3n \u0111\u1ed9ng c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a van v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 hay kh\u00f4ng.<\/p>\n<p>T\u00f3m l\u1ea1i, van \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 4-20mA \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p, cung c\u1ea5p th\u00f4ng tin ch\u00ednh x\u00e1c ki\u1ec3m so\u00e1t d\u00f2ng ch\u1ea5t l\u1ecfng v\u00e0 kh\u00ed. B\u1eb1ng c\u00e1ch nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u01b0 h\u00e0nh vi th\u1ea5t th\u01b0\u1eddng, kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u1eb7t, r\u00f2 r\u1ec9 v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i ch\u1eadm, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng s\u1ef1 c\u1ed1 n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. B\u1ea3o tr\u00ec th\u01b0\u1eddng xuy\u00ean, hi\u1ec7u chu\u1ea9n th\u00edch h\u1ee3p v\u00e0 ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a van l\u00e0 nh\u1eefng bi\u1ec7n ph\u00e1p thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a van \u0111i\u1ec1u khi\u1ec3n trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng van \u0111i\u1ec1u khi\u1ec3n c\u00f3 t\u00edn hi\u1ec7u 4-20mA Van \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed trong h\u1ec7 th\u1ed1ng. Nh\u1eefng van n\u00e0y l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m d\u1ea7u kh\u00ed, x\u1eed l\u00fd h\u00f3a&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2995,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[199],"tags":[141],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"vi","enabled_languages":["en","zh","es","de","fr","ru","pt","ar","ja","ko","it","id","hi","th","vi","tr"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"zh":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/16310"}],"collection":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/comments?post=16310"}],"version-history":[{"count":16,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/16310\/revisions"}],"predecessor-version":[{"id":16818,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/16310\/revisions\/16818"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media\/2995"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=16310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=16310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=16310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}