{"id":10180,"date":"2024-04-10T11:33:02","date_gmt":"2024-04-10T03:33:02","guid":{"rendered":"https:\/\/shchimay.com\/?p=10180"},"modified":"2024-04-12T09:55:51","modified_gmt":"2024-04-12T01:55:51","slug":"4-20ma-flow-sensor","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/4-20ma-flow-sensor\/","title":{"rendered":"C\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 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\/4-20ma-flow-sensor\/#Loi_ich_cua_viec_su_dung_cam_bien_luu_luong_4-20mA_trong_ung_dung_cong_nghiep\" title=\"L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p\">L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<\/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\/4-20ma-flow-sensor\/#Cach_hieu_chinh_va_khac_phuc_su_co_cam_bien_luu_luong_4-20mA\" title=\"C\u00e1ch hi\u1ec7u ch\u1ec9nh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA\">C\u00e1ch hi\u1ec7u ch\u1ec9nh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA<\/a><\/li><\/ul><\/nav><\/div>\n<h1 id=\"benefits-of-using-a-4-20ma-flow-sensor-in-industrial-applications-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Loi_ich_cua_viec_su_dung_cam_bien_luu_luong_4-20mA_trong_ung_dung_cong_nghiep\"><\/span>L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nTrong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, vi\u1ec7c \u0111o l\u01b0\u1eddng v\u00e0 gi\u00e1m s\u00e1t t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y ch\u00ednh x\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. M\u1ed9t thi\u1ebft b\u1ecb th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch n\u00e0y l\u00e0 c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA. Lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y cung c\u1ea5p m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady v\u00e0 ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd th\u1ea3o lu\u1eadn v\u1ec1 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/p>\n<p>M\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA l\u00e0 kh\u1ea3 n\u0103ng cung c\u1ea5p t\u00edn hi\u1ec7u \u0111\u1ea7u ra tuy\u1ebfn t\u00ednh v\u00e0 li\u00ean t\u1ee5c. T\u00edn hi\u1ec7u 4-20mA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00ec n\u00f3 mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u \u0111i\u1ec7n v\u00e0 c\u00f3 th\u1ec3 truy\u1ec1n \u0111i qu\u00e3ng \u0111\u01b0\u1eddng d\u00e0i m\u00e0 kh\u00f4ng b\u1ecb suy gi\u1ea3m t\u00edn hi\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t c\u00e1ch xa ph\u00f2ng \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c tr\u1ea1m gi\u00e1m s\u00e1t m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o.<\/p>\n<p>M\u1ed9t l\u1ee3i \u00edch kh\u00e1c c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA l\u00e0 m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady cao. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p kh\u1eafc nghi\u1ec7t, n\u01a1i s\u1ef1 dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 rung v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn. M\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c quy tr\u00ecnh \u0111ang di\u1ec5n ra su\u00f4n s\u1ebb v\u00e0 m\u1ecdi sai l\u1ec7ch so v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng mong mu\u1ed1n \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda ch\u1eefa nhanh ch\u00f3ng.<\/p>\n<p>Ngo\u00e0i ra, c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA r\u1ea5t d\u1ec5 l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tr\u1edf th\u00e0nh thi\u1ebft b\u1ecb c\u1eafm v\u00e0 ch\u1ea1y, ngh\u0129a l\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p nhanh ch\u00f3ng v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n c\u00f3 m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i c\u1ea5u h\u00ecnh l\u1ea1i ho\u1eb7c l\u1eadp tr\u00ecnh r\u1ed9ng r\u00e3i. Sau khi \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t, nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y y\u00eau c\u1ea7u b\u1ea3o tr\u00ec v\u00e0 hi\u1ec7u chu\u1ea9n \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u, gi\u00fap gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3m bi\u1ebfn ti\u1ebfp t\u1ee5c cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c theo th\u1eddi gian.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>CCT-3300<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng \u0111\u1ed5i<\/td>\n<td>10,00cm-1<\/td>\n<td>1.000cm-1<\/td>\n<td>0.100cm-1<\/td>\n<td>0,010cm-1<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>\n<td>(500\uff5e20.000)<\/td>\n<td>(1.0\uff5e2,000)<\/td>\n<td>(0.5\uff5e200)<\/td>\n<td>(0.05\uff5e18.25)<\/td>\n<\/tr>\n<tr>\n<td>\u03bcS\/cm<\/td>\n<td>\u03bcS\/cm<\/td>\n<td>\u03bcS\/cm<\/td>\n<td>M\u03a9\u00b7cm<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">TDS<\/td>\n<td>(250\uff5e10.000)<\/td>\n<td>(0,5\uff5e1.000)<\/td>\n<td>(0,25\uff5e100)<\/td>\n<td rowspan=\"2\">\u2014\u2014<\/td>\n<\/tr>\n<tr>\n<td>ppm<\/td>\n<td>ppm<\/td>\n<td>ppm<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh.<\/td>\n<td colspan=\"4\">(0\uff5e50)\u2103\uff08Nhi\u1ec7t \u0111\u1ed9. B\u1ed3i th\u01b0\u1eddng : NTC10K\uff09<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\">\u0110\u1ed9 ph\u00e2n gi\u1ea3i<\/td>\n<td colspan=\"4\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: 0,01\u03bcS\/cm\uff1b0,01mS\/cm<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">TDS: 0,01ppm<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9: 0,1\u2103<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"4\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td colspan=\"4\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n:1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">\u0110i\u1ec7n tr\u1edf su\u1ea5t: 2,0% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">TDS:1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9:\u00b10.5\u2103<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra T\u01b0\u01a1ng T\u1ef1<\/td>\n<td colspan=\"4\">B\u1ed9 ph\u00e1t\/b\u1ed9 ph\u00e1t \u0111\u01a1n c\u00e1ch ly(4\uff5e20)mA\uff0cin \u0111\u1ec3 l\u1ef1a ch\u1ecdn<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra \u0110i\u1ec1u Khi\u1ec3n<\/td>\n<td colspan=\"4\">R\u01a1le SPDT\uff0cC\u00f4ng su\u1ea5t t\u1ea3i: AC 230V\/50A(T\u1ed1i \u0111a)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/td>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9: v\u00e0 nbsp;(0\uff5e50)\u2103\uff1b\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\uff1a v\u00e0 nbsp;\u226485 ph\u1ea7n tr\u0103m RH(kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u01b0u tr\u1eef<\/td>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9:(-20\uff5e60)\u2103; \u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 nbsp;\u226485 ph\u1ea7n tr\u0103m RH(kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td colspan=\"4\">DC 24V\/AC 110V\/AC 220V\u00b115 ph\u1ea7n tr\u0103m \uff08\u0111\u1ec3 l\u1ef1a ch\u1ecdn\uff09<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td colspan=\"4\">48mm\u00d796mm\u00d780mm (H\u00d7W\u00d7D)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td colspan=\"4\">44mm\u00d792mm (H\u00d7W)<\/td>\n<\/tr>\n<tr>\n<td>C\u00e0i \u0111\u1eb7t<\/td>\n<td colspan=\"4\">G\u1eafn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, l\u1eafp \u0111\u1eb7t nhanh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>H\u01a1n n\u1eefa, c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA r\u1ea5t linh ho\u1ea1t v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng, kh\u00ed v\u00e0 th\u1eadm ch\u00ed c\u1ea3 h\u01a1i n\u01b0\u1edbc trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m x\u1eed l\u00fd h\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed, x\u1eed l\u00fd n\u01b0\u1edbc v\u00e0 s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng. T\u00ednh linh ho\u1ea1t n\u00e0y l\u00e0m cho c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m chi ph\u00ed cho c\u00e1c c\u00f4ng ty c\u1ea7n theo d\u00f5i t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong nhi\u1ec1u quy tr\u00ecnh ho\u1eb7c \u1ee9ng d\u1ee5ng.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"What is On-Line Monitoring Electrical Conductivity Meter like(www.chimaytech.com)\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/M161HOnyENI?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>T\u00f3m l\u1ea1i, l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p l\u00e0 r\u1ea5t r\u00f5 r\u00e0ng. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y cung c\u1ea5p t\u00edn hi\u1ec7u \u0111\u1ea7u ra tuy\u1ebfn t\u00ednh v\u00e0 li\u00ean t\u1ee5c, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady cao, l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng c\u0169ng nh\u01b0 t\u00ednh linh ho\u1ea1t trong nhi\u1ec1u \u1ee9ng d\u1ee5ng. B\u1eb1ng c\u00e1ch \u0111\u1ea7u t\u01b0 v\u00e0o c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA, c\u00e1c c\u00f4ng ty c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng quy tr\u00ecnh c\u1ee7a h\u1ecd ch\u1ea1y tr\u01a1n tru, duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<h1 id=\"how-to-calibrate-and-troubleshoot-a-4-20ma-flow-sensor-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Cach_hieu_chinh_va_khac_phuc_su_co_cam_bien_luu_luong_4-20mA\"><\/span>C\u00e1ch hi\u1ec7u ch\u1ec9nh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nC\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA l\u00e0 thi\u1ebft b\u1ecb ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed. Lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y cung c\u1ea5p t\u00edn hi\u1ec7u \u0111\u1ea7u ra tuy\u1ebfn t\u00ednh t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y, gi\u00fap d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n nh\u1eb1m m\u1ee5c \u0111\u00edch gi\u00e1m s\u00e1t v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a. Tuy nhi\u00ean, gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 c\u1ea3m bi\u1ebfn n\u00e0o kh\u00e1c, c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA c\u00f3 th\u1ec3 y\u00eau c\u1ea7u hi\u1ec7u chu\u1ea9n v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>Vi\u1ec7c hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u00f3 cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c. Hi\u1ec7u chu\u1ea9n bao g\u1ed3m vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a c\u1ea3m bi\u1ebfn \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y th\u1ef1c t\u1ebf c\u1ee7a ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c \u0111o. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng b\u1ed9 hi\u1ec7u chu\u1ea9n bao g\u1ed3m \u0111\u1ed3ng h\u1ed3 \u0111o l\u01b0u l\u01b0\u1ee3ng tham chi\u1ebfu ho\u1eb7c b\u1eb1ng c\u00e1ch so s\u00e1nh \u0111\u1ea7u ra c\u1ee7a c\u1ea3m bi\u1ebfn v\u1edbi m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u00e3 bi\u1ebft.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/Main-071.png\" alt=\"alt-8912\" class=\"wp-image-8912\" id=\"i8912\" \/><\/p>\n<p>\u0110\u1ec3 hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA, h\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn v\u1edbi ngu\u1ed3n \u0111i\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u. Sau \u0111\u00f3, \u0111\u01b0a t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea5t l\u1ecfng \u0111\u00e3 bi\u1ebft qua c\u1ea3m bi\u1ebfn v\u00e0 ghi l\u1ea1i t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a c\u1ea3m bi\u1ebfn. So s\u00e1nh t\u00edn hi\u1ec7u n\u00e0y v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y th\u1ef1c t\u1ebf v\u00e0 th\u1ef1c hi\u1ec7n m\u1ecdi \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e0i \u0111\u1eb7t hi\u1ec7u chu\u1ea9n c\u1ee7a c\u1ea3m bi\u1ebfn cho \u0111\u1ebfn khi t\u00edn hi\u1ec7u \u0111\u1ea7u ra kh\u1edbp v\u1edbi gi\u00e1 tr\u1ecb mong \u0111\u1ee3i.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/shchimay.com\/wp-content\/uploads\/2024\/04\/Spec-pH-ORP8500A-meter-pH-controller-with-RS485.png\" alt=\"alt-8914\" class=\"wp-image-8914\" id=\"i8914\" \/><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>CCT-8301A B\u1ed9 \u0111i\u1ec1u khi\u1ec3n tr\u1ef1c tuy\u1ebfn \u0110\u1ed9 d\u1eabn \u0111i\u1ec7n\/\u0110i\u1ec7n tr\u1edf su\u1ea5t\/TDS\/TEMP<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng \u0111\u1ed5i<\/td>\n<td>0,01cm<sup>-1<\/sup>, 0,1cm<sup>-1<\/sup>, 1,0cm<sup>-1<\/sup>, 10,0cm<sup>-1<\/sup><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>\n<td>(500~100.000)uS\/cm,(1~10.000)uS\/cm, (0,5~200)uS\/cm, (0,05~18,25) M\u03a9\u00b7cm<\/td>\n<\/tr>\n<tr>\n<td>TDS<\/td>\n<td>(250~50.000)ppm, (0,5~5.000)ppm, (0,25~100)ppm<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh.<\/td>\n<td>(0~180)\u00b0C(Nhi\u1ec7t \u0111\u1ed9. B\u1ed3i th\u01b0\u1eddng: Pt1000)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u00e2n gi\u1ea3i<\/td>\n<td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: 0,01uS\/cm, 0,01mS\/cm; \u0110i\u1ec7n tr\u1edf su\u1ea5t: 0,01M\u03a9\u00b7cm; TDS:0,01ppm, Nhi\u1ec7t \u0111\u1ed9: 0,1\u2103<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: 1,5 ph\u1ea7n tr\u0103m (FS), \u0110i\u1ec7n tr\u1edf su\u1ea5t: 2,0 ph\u1ea7n tr\u0103m (FS), TDS: 1,5 ph\u1ea7n tr\u0103m (FS), Nhi\u1ec7t \u0111\u1ed9: +\/- 0,5\u2103<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9. b\u1ed3i th\u01b0\u1eddng<\/td>\n<td>V\u1edbi25\u00b0C l\u00e0 ti\u00eau chu\u1ea9n trong m\u00f4i tr\u01b0\u1eddng b\u00ecnh th\u01b0\u1eddng; V\u1edbi 90C l\u00e0 ti\u00eau chu\u1ea9n trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao<\/td>\n<\/tr>\n<tr>\n<td>C\u1ed5ng giao ti\u1ebfp<\/td>\n<td>Giao th\u1ee9c RS485 Modbus RTU<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u ra t\u01b0\u01a1ng t\u1ef1<\/td>\n<td>K\u00eanh \u0111\u00f4i (4~20)mA. D\u1ee5ng c\u1ee5\/M\u00e1y ph\u00e1t \u0111\u1ec3 l\u1ef1a ch\u1ecdn<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra \u0110i\u1ec1u Khi\u1ec3n<\/td>\n<td>C\u00f4ng t\u1eafc r\u01a1le b\u00e1n d\u1eabn quang \u0111i\u1ec7n t\u1eed ba k\u00eanh, Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i: AC\/DC 30V,50mA(max)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/td>\n<td>Nhi\u1ec7t \u0111\u1ed9.(0~50)\u2103; \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 lt;95% RH (kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u01b0u tr\u1eef<\/td>\n<td>Nhi\u1ec7t \u0111\u1ed9.(-20~60)\u2103;\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i \u226485 ph\u1ea7n tr\u0103m RH (kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>DC24V+\/- 15 ph\u1ea7n tr\u0103m <\/td>\n<\/tr>\n<tr>\n<td>M\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7<\/td>\n<td>IP65 (c\u00f3 n\u1eafp l\u01b0ng)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td>96mmx96mmx94mm(CxRxS)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td>9lmx91mm(CxR)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i th\u1ef1c hi\u1ec7n ki\u1ec3m tra hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean tr\u00ean c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3m bi\u1ebfn n\u00e0y ti\u1ebfp t\u1ee5c cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c theo th\u1eddi gian. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t ho\u1eb7c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 c\u00f3 th\u1ec3 c\u1ea7n hi\u1ec7u chu\u1ea9n l\u1ea1i.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"water pipe plastic connector factory\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/ByNRSPEuiNA?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>Ngo\u00e0i vi\u1ec7c hi\u1ec7u chu\u1ea9n, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 n\u1ebfu c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 ph\u00e1t sinh bao g\u1ed3m \u0111\u1ed9 l\u1ec7ch t\u00edn hi\u1ec7u, \u0111\u1ed9 l\u1ec7ch 0 ho\u1eb7c \u0111\u1ed9 l\u1ec7ch c\u1ea3m bi\u1ebfn. S\u1ef1 l\u1ec7ch t\u00edn hi\u1ec7u x\u1ea3y ra khi t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a c\u1ea3m bi\u1ebfn l\u1ec7ch kh\u1ecfi ph\u1ea1m vi d\u1ef1 ki\u1ebfn, trong khi \u0111\u1ed9 l\u1ec7ch b\u1eb1ng 0 bi\u1ec3u th\u1ecb s\u1ef1 thay \u0111\u1ed5i t\u00edn hi\u1ec7u c\u01a1 b\u1ea3n c\u1ee7a c\u1ea3m bi\u1ebfn. Hi\u1ec7n t\u01b0\u1ee3ng tr\u00f4i c\u1ea3m bi\u1ebfn x\u1ea3y ra khi t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a c\u1ea3m bi\u1ebfn thay \u0111\u1ed5i theo th\u1eddi gian, ngay c\u1ea3 khi t\u1ed1c \u0111\u1ed9 d\u00f2ng kh\u00f4ng \u0111\u1ed5i.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"How does a pressure sensor work? Working Principle of a Pressure Sensor - Chimaytech.com\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/1Ym2p8WXYPc?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>\n\u0110\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng s\u1ef1 c\u1ed1 n\u00e0y, h\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch ki\u1ec3m tra c\u00e1c k\u1ebft n\u1ed1i d\u00e2y c\u1ee7a c\u1ea3m bi\u1ebfn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u00fang \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i an to\u00e0n v\u00e0 \u0111\u00fang c\u00e1ch. Ti\u1ebfp theo, h\u00e3y x\u00e1c minh r\u1eb1ng c\u1ea3m bi\u1ebfn \u0111ang nh\u1eadn \u0111\u01b0\u1ee3c ngu\u1ed3n \u0111i\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u c\u00f3 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c hay kh\u00f4ng. N\u1ebfu s\u1ef1 c\u1ed1 v\u1eabn ti\u1ebfp di\u1ec5n, h\u00e3y c\u00e2n nh\u1eafc vi\u1ec7c hi\u1ec7u ch\u1ec9nh l\u1ea1i c\u1ea3m bi\u1ebfn ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 th\u00eam.<\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c hi\u1ec7u ch\u1ec9nh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. Ki\u1ec3m tra hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u1ea3m bi\u1ebfn theo th\u1eddi gian, \u0111\u1ed3ng th\u1eddi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft m\u1ecdi v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 ph\u00e1t sinh. B\u1eb1ng c\u00e1ch l\u00e0m theo c\u00e1c b\u01b0\u1edbc n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA ti\u1ebfp t\u1ee5c cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p c\u1ee7a b\u1ea1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng 4-20mA trong \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p Trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, vi\u1ec7c \u0111o l\u01b0\u1eddng v\u00e0 gi\u00e1m s\u00e1t t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y ch\u00ednh x\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. M\u1ed9t thi\u1ebft b\u1ecb&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3260,"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":[200],"tags":[174],"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":false,"content":false,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"ko":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"id":{"title":false,"content":false,"excerpt":false},"hi":{"title":false,"content":false,"excerpt":false},"th":{"title":false,"content":false,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"tr":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/10180"}],"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=10180"}],"version-history":[{"count":6,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/10180\/revisions"}],"predecessor-version":[{"id":10669,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/10180\/revisions\/10669"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media\/3260"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=10180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=10180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=10180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}