{"id":22580,"date":"2024-08-27T14:55:17","date_gmt":"2024-08-27T06:55:17","guid":{"rendered":"https:\/\/shchimay.com\/?p=22580"},"modified":"2024-08-28T13:45:26","modified_gmt":"2024-08-28T05:45:26","slug":"ph-sensor-rs485","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/ph-sensor-rs485\/","title":{"rendered":"c\u1ea3m bi\u1ebfn ph rs485"},"content":{"rendered":"<h1 id=\"understanding-the-benefits-of-using-rs485-communication-for-ph-sensors-wpaicgheading\">Hi\u1ec3u r\u00f5 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng giao ti\u1ebfp RS485 cho c\u1ea3m bi\u1ebfn pH<\/h1>\n<p>\nTrong th\u1ebf gi\u1edbi t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh, c\u1ea3m bi\u1ebfn pH \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c theo d\u00f5i v\u00e0 ki\u1ec3m so\u00e1t m\u1ee9c \u0111\u1ed9 pH c\u1ee7a c\u00e1c ch\u1ea5t l\u1ecfng kh\u00e1c nhau. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, bao g\u1ed3m nh\u00e0 m\u00e1y x\u1eed l\u00fd n\u01b0\u1edbc, nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t v\u00e0 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng. M\u1ed9t trong nh\u1eefng \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc khi s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn pH l\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t hi\u1ec7u qu\u1ea3 d\u1eef li\u1ec7u m\u00e0 ch\u00fang thu th\u1eadp \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m. M\u1ed9t giao th\u1ee9c truy\u1ec1n th\u00f4ng ph\u1ed5 bi\u1ebfn d\u00e0nh cho c\u1ea3m bi\u1ebfn pH l\u00e0 RS485.<\/p>\n<p>RS485 l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n cho giao ti\u1ebfp n\u1ed1i ti\u1ebfp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. N\u00f3 cho ph\u00e9p nhi\u1ec1u thi\u1ebft b\u1ecb li\u00ean l\u1ea1c qua kho\u1ea3ng c\u00e1ch xa b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p d\u00e2y xo\u1eafn. \u0110i\u1ec1u n\u00e0y khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c c\u1ea3m bi\u1ebfn pH v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p l\u1edbn, n\u01a1i c\u00e1c c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t c\u00e1ch xa nhau.<\/p>\n<p>M\u1ed9t trong nh\u1eefng l\u1ee3i \u00edch ch\u00ednh c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng giao ti\u1ebfp RS485 cho c\u1ea3m bi\u1ebfn pH l\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch xa m\u00e0 kh\u00f4ng b\u1ecb suy gi\u1ea3m t\u00edn hi\u1ec7u. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p n\u01a1i c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf nh\u1eefng v\u1ecb tr\u00ed xa ho\u1eb7c kh\u00f3 ti\u1ebfp c\u1eadn. RS485 c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady trong kho\u1ea3ng c\u00e1ch l\u00ean t\u1edbi 1.200 m\u00e9t, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p l\u1edbn.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>CCT-5300<\/td>\n<td><\/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 colspan=\"2\">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 colspan=\"2\">(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 colspan=\"2\">\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 colspan=\"2\">(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 colspan=\"2\">ppm<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh.<\/td>\n<td colspan=\"5\">(0\uff5e50)\u2103\uff08Nhi\u1ec7t \u0111\u1ed9. B\u1ed3i th\u01b0\u1eddng : NTC10K\uff09<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"4\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td colspan=\"5\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: 1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\">\u0110i\u1ec7n tr\u1edf su\u1ea5t: 2,0% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\">TDS: 1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"5\">Nhi\u1ec7t \u0111\u1ed9.:\u00b10.5\u2103<\/td>\n<\/tr>\n<tr>\n<td>B\u00f9 nhi\u1ec7t \u0111\u1ed9<\/td>\n<td colspan=\"5\">(0\uff5e50)\u2103\u00a0v\u1edbi 25\u2103 l\u00e0m Ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra T\u01b0\u01a1ng T\u1ef1<\/td>\n<td colspan=\"5\">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=\"5\">R\u01a1le SPDT, Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i: AC 230V\/50A(Max)<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td colspan=\"3\">CCT-5300E : DC24V<\/td>\n<td colspan=\"2\">CCT-5320E : AC 220V\u00b115 ph\u1ea7n tr\u0103m <\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/td>\n<td colspan=\"5\">Nhi\u1ec7t \u0111\u1ed9.\u00a0(0\uff5e50)\u2103\uff1b\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\u00a0\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=\"5\">Nhi\u1ec7t \u0111\u1ed9.(-20\uff5e60)\u2103; \u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\u00a0\u226485 ph\u1ea7n tr\u0103m RH(kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td colspan=\"5\">96mm\u00d796mm\u00d7105mm (H\u00d7W\u00d7D)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td colspan=\"5\">91mm\u00d791mm (H\u00d7W)<\/td>\n<\/tr>\n<tr>\n<td>C\u00e0i \u0111\u1eb7t<\/td>\n<td colspan=\"5\">\u00a0G\u1eafn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, c\u00e0i \u0111\u1eb7t nhanh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\n<div style=\"width: 640px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-22580-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/FCT-8350.mp4?_=1\" \/><a href=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/FCT-8350.mp4\">http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/FCT-8350.mp4<\/a><\/video><\/div>M\u1ed9t \u01b0u \u0111i\u1ec3m kh\u00e1c c\u1ee7a giao ti\u1ebfp RS485 l\u00e0 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 nhi\u1ec1u c\u1ea3m bi\u1ebfn tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u c\u1ea3m bi\u1ebfn pH c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t m\u1ea1ng RS485 duy nh\u1ea5t, cho ph\u00e9p gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t t\u1eadp trung t\u1ea5t c\u1ea3 c\u00e1c c\u1ea3m bi\u1ebfn t\u1eeb m\u1ed9t v\u1ecb tr\u00ed duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c \u0111i d\u00e2y v\u00e0 gi\u1ea3m chi ph\u00ed t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p>Giao ti\u1ebfp RS485 c\u0169ng mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u cao, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, n\u01a1i nhi\u1ec5u \u0111i\u1ec7n c\u00f3 th\u1ec3 l\u00e0 v\u1ea5n \u0111\u1ec1. C\u1eb7p d\u00e2y xo\u1eafn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giao ti\u1ebfp RS485 gi\u00fap gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn pH, v\u1ed1n y\u00eau c\u1ea7u d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ki\u1ec3m so\u00e1t \u0111\u00fang m\u1ee9c \u0111\u1ed9 pH.<\/p>\n<p>Ngo\u00e0i c\u00e1c l\u1ee3i \u00edch k\u1ef9 thu\u1eadt, giao ti\u1ebfp RS485 c\u00f2n ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n. B\u1ed9 thu ph\u00e1t RS485 c\u00f3 s\u1eb5n v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i r\u1ebb ti\u1ec1n, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u1ec3 k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn pH v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m. Giao th\u1ee9c c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp t\u1ed1t v\u00e0 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i, gi\u00fap d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n c\u00f3.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/chimaytech.net\/wp-content\/uploads\/2023\/11\/ROC-7000-2.jpg\" alt=\"alt-4910\" class=\"wp-image-4910\" id=\"i4910\" \/><\/p>\n<p>Nh\u00ecn chung, giao ti\u1ebfp RS485 mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i \u00edch khi k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn pH trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. Kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u qua kho\u1ea3ng c\u00e1ch xa, h\u1ed7 tr\u1ee3 nhi\u1ec1u c\u1ea3m bi\u1ebfn tr\u00ean c\u00f9ng m\u1ed9t m\u1ea1ng v\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u cao khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, n\u01a1i c\u1ea7n c\u00f3 d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng giao ti\u1ebfp RS485, c\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3m bi\u1ebfn pH c\u1ee7a h\u1ecd ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 hi\u1ec7u su\u1ea5t, gi\u00fap duy tr\u00ec m\u1ee9c \u0111\u1ed9 pH t\u1ed1i \u01b0u v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u r\u00f5 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng giao ti\u1ebfp RS485 cho c\u1ea3m bi\u1ebfn pH Trong th\u1ebf gi\u1edbi t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh, c\u1ea3m bi\u1ebfn pH \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c theo d\u00f5i v\u00e0 ki\u1ec3m so\u00e1t m\u1ee9c \u0111\u1ed9 pH c\u1ee7a c\u00e1c ch\u1ea5t l\u1ecfng kh\u00e1c nhau. Nh\u1eefng c\u1ea3m&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[200],"tags":[11650,134481],"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\/22580"}],"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=22580"}],"version-history":[{"count":17,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/22580\/revisions"}],"predecessor-version":[{"id":22752,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/22580\/revisions\/22752"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=22580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=22580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=22580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}