{"id":10808,"date":"2024-04-13T10:24:48","date_gmt":"2024-04-13T02:24:48","guid":{"rendered":"https:\/\/shchimay.com\/?p=10808"},"modified":"2024-04-13T14:01:44","modified_gmt":"2024-04-13T06:01:44","slug":"dissolved-oxygen-meter-accuracy","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/dissolved-oxygen-meter-accuracy\/","title":{"rendered":"\u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan"},"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\/dissolved-oxygen-meter-accuracy\/#Cac_yeu_to_anh_huong_den_do_chinh_xac_cua_may_do_oxy_hoa_tan\" title=\"C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan\">C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan<\/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\/dissolved-oxygen-meter-accuracy\/#Tam_quan_trong_cua_viec_hieu_chuan_thuong_xuyen_doi_voi_may_do_oxy_hoa_tan\" title=\"T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean \u0111\u1ed1i v\u1edbi m\u00e1y \u0111o oxy h\u00f2a tan\">T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean \u0111\u1ed1i v\u1edbi m\u00e1y \u0111o oxy h\u00f2a tan<\/a><\/li><\/ul><\/nav><\/div>\n<h1 id=\"factors-affecting-dissolved-oxygen-meter-accuracy-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Cac_yeu_to_anh_huong_den_do_chinh_xac_cua_may_do_oxy_hoa_tan\"><\/span>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nM\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n v\u00e0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i. Nh\u1eefng m\u00e1y \u0111o n\u00e0y \u0111o l\u01b0\u1ee3ng oxy h\u00f2a tan trong n\u01b0\u1edbc, cung c\u1ea5p th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00e0 s\u1ee9c kh\u1ecfe c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc. Tuy nhi\u00ean, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1. C\u00e1c y\u1ebfu t\u1ed1 n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t c\u1ea9n th\u1eadn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 nhi\u1ec7t \u0111\u1ed9. \u0110\u1ed9 h\u00f2a tan c\u1ee7a oxy trong n\u01b0\u1edbc ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o nhi\u1ec7t \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao th\u00ec \u0111\u1ed9 h\u00f2a tan c\u1ee7a oxy c\u00e0ng th\u1ea5p. H\u1ea7u h\u1ebft c\u00e1c m\u00e1y \u0111o oxy h\u00f2a tan \u0111\u1ec1u \u0111\u01b0\u1ee3c trang b\u1ecb t\u00ednh n\u0103ng b\u00f9 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 gi\u1ea3i quy\u1ebft hi\u1ec7u \u1ee9ng n\u00e0y. Tuy nhi\u00ean, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u1eabn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i nhanh ch\u00f3ng. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111o oxy h\u00f2a tan th\u01b0\u1eddng xuy\u00ean v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e0i \u0111\u1eb7t b\u00f9 nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh h\u1ee3p l\u00fd \u0111\u1ec3 gi\u1ea3m thi\u1ec3u sai s\u00f3t do bi\u1ebfn \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9.<\/p>\n<p>M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 \u0111\u1ed9 m\u1eb7n. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a mu\u1ed1i trong n\u01b0\u1edbc c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u1ed9 h\u00f2a tan c\u1ee7a oxy, d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t trong c\u00e1c ph\u00e9p \u0111o. M\u1ed9t s\u1ed1 m\u00e1y \u0111o oxy h\u00f2a tan \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho nh\u1eefng thay \u0111\u1ed5i v\u1ec1 \u0111\u1ed9 m\u1eb7n, nh\u01b0ng \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111o theo m\u1ee9c \u0111\u1ed9 m\u1eb7n c\u1ee5 th\u1ec3 c\u1ee7a n\u01b0\u1edbc \u0111ang \u0111\u01b0\u1ee3c ki\u1ec3m tra. Vi\u1ec7c kh\u00f4ng t\u00ednh \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 m\u1eb7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 \u0111\u1ecdc kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 hi\u1ec3u sai v\u1ec1 d\u1eef li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc.<br \/>\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-10808-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/DO-Meter.mp4?_=1\" \/><a href=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/DO-Meter.mp4\">http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/DO-Meter.mp4<\/a><\/video><\/div><\/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(CxRxD)<\/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>Ngo\u00e0i nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 m\u1eb7n, c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nh\u01b0 \u00e1p su\u1ea5t, \u0111\u1ed9 pH v\u00e0 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan. V\u00ed d\u1ee5, \u00e1p su\u1ea5t cao c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 d\u1eabn \u0111\u1ebfn sai s\u1ed1 trong ph\u00e9p \u0111o. T\u01b0\u01a1ng t\u1ef1, m\u1ee9c \u0111\u1ed9 pH qu\u00e1 cao ho\u1eb7c s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c ch\u1ea5t ph\u1ea3n \u1ee9ng v\u1edbi oxy c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y khi s\u1eed d\u1ee5ng m\u00e1y \u0111o oxy h\u00f2a tan trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p th\u00edch h\u1ee3p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"Why are pressure sensors used? chimaytech.com\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/2b3HVNwTzCQ?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>\nVi\u1ec7c b\u1ea3o tr\u00ec v\u00e0 hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean m\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. Hi\u1ec7u chu\u1ea9n bao g\u1ed3m vi\u1ec7c so s\u00e1nh s\u1ed1 \u0111\u1ecdc c\u1ee7a \u0111\u1ed3ng h\u1ed3 v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n \u0111\u00e3 bi\u1ebft v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u1eafc ph\u1ee5c m\u1ecdi sai l\u1ec7ch. B\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u00e0m s\u1ea1ch c\u1ea3m bi\u1ebfn v\u00e0 thay th\u1ebf c\u00e1c b\u1ed9 ph\u1eadn b\u1ecb m\u00f2n, c\u0169ng c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan. N\u00ean tu\u00e2n theo h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 hi\u1ec7u chu\u1ea9n v\u00e0 b\u1ea3o tr\u00ec \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u c\u1ee7a m\u00e1y \u0111o.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/pH-ORP-5500-series-pH-ORP-online-transmitting-controller2.png\" alt=\"alt-728\" class=\"wp-image-728\" id=\"i728\" \/><\/p>\n<p>T\u00f3m l\u1ea1i, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau, bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 m\u1eb7n, \u00e1p su\u1ea5t, \u0111\u1ed9 pH v\u00e0 ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y khi s\u1eed d\u1ee5ng m\u00e1y \u0111o oxy h\u00f2a tan v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p th\u00edch h\u1ee3p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c. Vi\u1ec7c hi\u1ec7u chu\u1ea9n v\u00e0 b\u1ea3o tr\u00ec th\u01b0\u1eddng xuy\u00ean m\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc ch\u1ee7 \u0111\u1ed9ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft ch\u00fang, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 c\u00f3 \u00fd ngh\u0129a v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc c\u0169ng nh\u01b0 t\u00ecnh tr\u1ea1ng c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc.<\/p>\n<h1 id=\"importance-of-regular-calibration-for-dissolved-oxygen-meters-wpaicgheading\"><span class=\"ez-toc-section\" id=\"Tam_quan_trong_cua_viec_hieu_chuan_thuong_xuyen_doi_voi_may_do_oxy_hoa_tan\"><\/span>T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean \u0111\u1ed1i v\u1edbi m\u00e1y \u0111o oxy h\u00f2a tan<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>\nM\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n v\u00e0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i. Nh\u1eefng m\u00e1y \u0111o n\u00e0y \u0111o l\u01b0\u1ee3ng oxy h\u00f2a tan trong n\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng cho s\u1ef1 s\u1ed1ng c\u00f2n c\u1ee7a c\u00e1c sinh v\u1eadt d\u01b0\u1edbi n\u01b0\u1edbc v\u00e0 s\u1ee9c kh\u1ecfe t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i th\u01b0\u1eddng xuy\u00ean hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o oxy h\u00f2a tan.<\/p>\n<p>Hi\u1ec7u chu\u1ea9n l\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u ch\u1ec9nh ch\u1ec9 s\u1ed1 c\u1ee7a m\u00e1y \u0111o \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi gi\u00e1 tr\u1ecb tham chi\u1ebfu ho\u1eb7c ti\u00eau chu\u1ea9n \u0111\u00e3 bi\u1ebft. \u0110i\u1ec1u n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft v\u00ec theo th\u1eddi gian, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 suy gi\u1ea3m c\u1ea3m bi\u1ebfn, dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m. N\u1ebfu kh\u00f4ng hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean, s\u1ed1 li\u1ec7u do m\u00e1y \u0111o cung c\u1ea5p c\u00f3 th\u1ec3 ng\u00e0y c\u00e0ng kh\u00f4ng ch\u00ednh x\u00e1c, d\u1eabn \u0111\u1ebfn vi\u1ec7c gi\u1ea3i th\u00edch d\u1eef li\u1ec7u kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng sai s\u00f3t t\u1ed1n k\u00e9m.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>M\u00e1y \u0111o pH\/ORP-1800 pH\/ORP<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ea1m vi<\/td>\n<td>0-14 pH; -1600 &#8211; +1600mV<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td>\u00b10.1pH; \u00b12mV<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9. Comp.<\/td>\n<td>B\u00f9 nhi\u1ec7t \u0111\u1ed9 b\u1eb1ng tay\/t\u1ef1 \u0111\u1ed9ng; Kh\u00f4ng c\u00f3 ph\u1ea7n b\u00f9<\/td>\n<\/tr>\n<tr>\n<td>Ho\u1ea1t \u0111\u1ed9ng. Nhi\u1ec7t \u0111\u1ed9<\/td>\n<td>B\u00ecnh th\u01b0\u1eddng 0\uff5e50\u2103; Nhi\u1ec7t \u0111\u1ed9 cao 0\uff5e100\u2103<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea3m bi\u1ebfn<\/td>\n<td>c\u1ea3m bi\u1ebfn pH \u0111\u00f4i\/ba; C\u1ea3m bi\u1ebfn ORP<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec3n th\u1ecb<\/td>\n<td>M\u00e0n h\u00ecnh LCD 128*64<\/td>\n<\/tr>\n<tr>\n<td>Giao ti\u1ebfp<\/td>\n<td>\u0110\u1ea7u ra 4-20mA\/RS485<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u ra<\/td>\n<td>\u0110i\u1ec1u khi\u1ec3n r\u01a1le k\u00e9p gi\u1edbi h\u1ea1n Cao\/Th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>S\u1ee9c m\u1ea1nh<\/td>\n<td>AC 220V\u00b110 ph\u1ea7n tr\u0103m 50\/60Hz ho\u1eb7c AC 110V\u00b110 ph\u1ea7n tr\u0103m 50\/60Hz ho\u1eb7c DC24V\/0,5A<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/td>\n<td>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng:0\uff5e50\u2103<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\u226485 ph\u1ea7n tr\u0103m<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td>96\u00d796\u00d7100mm(H\u00d7W\u00d7L)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td>92\u00d792mm(H\u00d7W)<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ebf \u0110\u1ed9 C\u00e0i \u0110\u1eb7t<\/td>\n<td>\u0110\u00e3 nh\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>M\u1ed9t trong nh\u1eefng l\u00fd do ch\u00ednh t\u1ea1i sao vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o. Ngay c\u1ea3 nh\u1eefng sai l\u1ec7ch nh\u1ecf trong k\u1ebft qu\u1ea3 \u0111o c\u0169ng c\u00f3 th\u1ec3 c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u01b0 nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n ho\u1eb7c gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng. B\u1eb1ng c\u00e1ch hi\u1ec7u ch\u1ec9nh \u0111\u1ed3ng h\u1ed3 \u0111\u1ecbnh k\u1ef3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 x\u00e1c minh \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3 v\u00e0 th\u1ef1c hi\u1ec7n m\u1ecdi \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ed1 \u0111\u1ecdc l\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>Ngo\u00e0i \u0111\u1ed9 ch\u00ednh x\u00e1c, hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean c\u00f2n gi\u00fap duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3. \u0110\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn kh\u1ea3 n\u0103ng c\u1ee7a m\u00e1y \u0111o \u0111\u1ec3 cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o nh\u1ea5t qu\u00e1n v\u00e0 l\u1eb7p l\u1ea1i. Theo th\u1eddi gian, c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 l\u1ec7ch c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3, d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i trong k\u1ebft qu\u1ea3 \u0111o. B\u1eb1ng c\u00e1ch hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o th\u01b0\u1eddng xuy\u00ean, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 hi\u1ec7u ch\u1ec9nh m\u1ecdi ngu\u1ed3n bi\u1ebfn thi\u00ean, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c ph\u00e9p \u0111o nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>M\u1ed9t l\u00fd do quan tr\u1ecdng kh\u00e1c \u0111\u1ec3 hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean l\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 quy \u0111\u1ecbnh c\u1ee7a ng\u00e0nh. Nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i v\u00e0 nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n, \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 v\u1ec1 n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan trong n\u01b0\u1edbc. Vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean m\u00e1y \u0111o oxy h\u00f2a tan th\u01b0\u1eddng l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 ch\u1ee9ng minh s\u1ef1 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp.<\/p>\n<p>H\u01a1n n\u1eefa, vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a m\u00e1y \u0111o v\u00e0 tr\u00e1nh vi\u1ec7c s\u1eeda ch\u1eefa ho\u1eb7c thay th\u1ebf t\u1ed1n k\u00e9m. B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft s\u1edbm m\u1ecdi v\u1ea5n \u0111\u1ec1, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng th\u00eam cho \u0111\u1ed3ng h\u1ed3 v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ed3ng h\u1ed3 ti\u1ebfp t\u1ee5c cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady trong nhi\u1ec1u n\u0103m t\u1edbi. Ngo\u00e0i ra, vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ecdi v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n v\u1edbi m\u00e1y \u0111o tr\u01b0\u1edbc khi ch\u00fang leo thang, ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 ti\u1ec1n b\u1ea1c v\u1ec1 l\u00e2u d\u00e0i.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/shchimay.com\/wp-content\/uploads\/2024\/04\/MFC-8800-IOT-Meter-Multi-channel-Controller-3.png\" alt=\"alt-7220\" class=\"wp-image-7220\" id=\"i7220\" \/><\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan. B\u1eb1ng c\u00e1ch hi\u1ec7u ch\u1ec9nh \u0111\u1ed3ng h\u1ed3 \u0111\u1ecbnh k\u1ef3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c k\u1ebft qu\u1ea3 \u0111o l\u00e0 ch\u00ednh x\u00e1c, nh\u1ea5t qu\u00e1n v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh. Ngo\u00e0i ra, vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed3ng h\u1ed3 v\u00e0 tr\u00e1nh vi\u1ec7c s\u1eeda ch\u1eefa ho\u1eb7c thay th\u1ebf t\u1ed1n k\u00e9m. Nh\u00ecn chung, \u0111\u1ea7u t\u01b0 v\u00e0o vi\u1ec7c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean ch\u1ec9 l\u00e0 m\u1ed9t c\u00e1i gi\u00e1 nh\u1ecf \u0111\u1ec3 tr\u1ea3 cho s\u1ef1 an t\u00e2m khi bi\u1ebft r\u1eb1ng m\u00e1y \u0111o oxy h\u00f2a tan c\u1ee7a b\u1ea1n \u0111ang cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y \u0111o oxy h\u00f2a tan M\u00e1y \u0111o oxy h\u00f2a tan l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n v\u00e0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i. Nh\u1eefng m\u00e1y \u0111o n\u00e0y \u0111o&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1700,"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":[165],"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":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"ja":{"title":false,"content":false,"excerpt":false},"ko":{"title":false,"content":false,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"id":{"title":false,"content":false,"excerpt":false},"hi":{"title":false,"content":false,"excerpt":false},"th":{"title":true,"content":true,"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\/10808"}],"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=10808"}],"version-history":[{"count":9,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/10808\/revisions"}],"predecessor-version":[{"id":10944,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/10808\/revisions\/10944"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media\/1700"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=10808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=10808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=10808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}