{"id":27334,"date":"2024-09-19T16:01:38","date_gmt":"2024-09-19T08:01:38","guid":{"rendered":"https:\/\/shchimay.com\/?p=27334"},"modified":"2024-09-20T17:00:49","modified_gmt":"2024-09-20T09:00:49","slug":"ph-meter-3-point-calibration","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/ph-meter-3-point-calibration\/","title":{"rendered":"ph m\u00e9t hi\u1ec7u chu\u1ea9n 3 \u0111i\u1ec3m"},"content":{"rendered":"<h1 id=\"importance-of-proper-ph-meter-calibration-wpaicgheading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH th\u00edch h\u1ee3p<\/h1>\n<p>\nVi\u1ec7c hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH ph\u00f9 h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c s\u1ed1 \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau nh\u01b0 th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng, d\u01b0\u1ee3c ph\u1ea9m, gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng v\u00e0 nghi\u00ean c\u1ee9u. M\u00e1y \u0111o pH l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 khoa h\u1ecdc d\u00f9ng \u0111\u1ec3 \u0111o \u0111\u1ed9 axit ho\u1eb7c \u0111\u1ed9 ki\u1ec1m c\u1ee7a dung d\u1ecbch. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u00e1y \u0111o pH \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n ch\u00ednh x\u00e1c \u0111\u1ec3 thu \u0111\u01b0\u1ee3c s\u1ed1 \u0111\u1ecdc ch\u00ednh x\u00e1c.<\/p>\n<p>M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u chu\u1ea9n ph\u1ed5 bi\u1ebfn nh\u1ea5t cho m\u00e1y \u0111o pH l\u00e0 hi\u1ec7u chu\u1ea9n 3 \u0111i\u1ec3m. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m vi\u1ec7c hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111o pH b\u1eb1ng ba dung d\u1ecbch \u0111\u1ec7m ti\u00eau chu\u1ea9n \u0111\u00e3 bi\u1ebft gi\u00e1 tr\u1ecb pH. C\u00e1c dung d\u1ecbch \u0111\u1ec7m th\u01b0\u1eddng c\u00f3 pH 4,01, pH 7,00 v\u00e0 pH 10,01. B\u1eb1ng c\u00e1ch hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH \u1edf ba \u0111i\u1ec3m kh\u00e1c nhau, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n ch\u00ednh x\u00e1c tr\u00ean nhi\u1ec1u gi\u00e1 tr\u1ecb pH.<\/p>\n<p>B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean khi th\u1ef1c hi\u1ec7n hi\u1ec7u chu\u1ea9n 3 \u0111i\u1ec3m l\u00e0 chu\u1ea9n b\u1ecb dung d\u1ecbch \u0111\u1ec7m. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 s\u1eed d\u1ee5ng dung d\u1ecbch \u0111\u1ec7m m\u1edbi v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u00fang \u1edf nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ec3 hi\u1ec7u chu\u1ea9n. M\u00e1y \u0111o pH c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 r\u1eeda \u0111\u00fang c\u00e1ch b\u1eb1ng n\u01b0\u1edbc c\u1ea5t tr\u01b0\u1edbc khi hi\u1ec7u chu\u1ea9n \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u1eb7n ho\u1eb7c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a k\u1ebft qu\u1ea3 \u0111o.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>B\u1ed9 \u0111i\u1ec1u khi\u1ec3n Oline d\u1eabn \u0111i\u1ec7n\/n\u1ed3ng \u0111\u1ed9 c\u1ea3m \u1ee9ng CIT-8800<\/td>\n<\/tr>\n<tr>\n<td>T\u1eadp trung<\/td>\n<td>1.NaOH:(0~15) ph\u1ea7n tr\u0103m ho\u1eb7c (25~50) ph\u1ea7n tr\u0103m ; 2.HNO<sub>3<\/sub>:(0~25) ph\u1ea7n tr\u0103m ho\u1eb7c (36~82) ph\u1ea7n tr\u0103m ; 3. \u0110\u01b0\u1eddng cong n\u1ed3ng \u0111\u1ed9 do ng\u01b0\u1eddi d\u00f9ng x\u00e1c \u0111\u1ecbnh<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>\n<td>(500~2.000.000)uS\/cm<\/td>\n<\/tr>\n<tr>\n<td>TDS<\/td>\n<td>(250~1.000.000)ppm<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9.<\/td>\n<td>(0~120)\u00b0C<\/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; N\u1ed3ng \u0111\u1ed9: 0,01% ; TDS:0,01ppm, Nhi\u1ec7t \u0111\u1ed9: 0,1\u2103<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: (500~1000)uS\/cm +\/-10uS\/cm; (1~2000)mS\/cm+\/-1,0 ph\u1ea7n tr\u0103m <\/td>\n<\/tr>\n<tr>\n<td>TDS: m\u1ee9c 1,5, 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>Ph\u1ea1m vi: (0~120)\u00b0C; ph\u1ea7n t\u1eed: Pt1000<\/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>Hai k\u00eanh c\u00e1ch ly\/c\u00f3 th\u1ec3 v\u1eadn chuy\u1ec3n (4-20)mA, Thi\u1ebft b\u1ecb \/ 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 quang \u0111i\u1ec7n b\u00e1n d\u1eabn ba k\u00eanh, C\u00f4ng t\u1eafc l\u1eadp tr\u00ecnh, xung v\u00e0 t\u1ea7n s\u1ed1<\/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 <95%RH (non-condensing)<\/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>DC 24V+15% <\/td>\n<\/tr>\n<tr>\n<td>M\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7<\/td>\n<td>IP65 (c\u00f3 n\u1eafp sau)<\/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>\nSau khi chu\u1ea9n b\u1ecb xong dung d\u1ecbch \u0111\u1ec7m, m\u00e1y \u0111o pH c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh b\u1eb1ng c\u00e1ch nh\u00fang \u0111i\u1ec7n c\u1ef1c v\u00e0o t\u1eebng dung d\u1ecbch \u0111\u1ec7m v\u00e0 \u0111i\u1ec1u ch\u1ec9nh m\u00e1y \u0111o \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi gi\u00e1 tr\u1ecb pH \u0111\u00e3 bi\u1ebft c\u1ee7a dung d\u1ecbch. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i r\u1eeda s\u1ea1ch \u0111i\u1ec7n c\u1ef1c b\u1eb1ng n\u01b0\u1edbc c\u1ea5t gi\u1eefa m\u1ed7i \u0111i\u1ec3m hi\u1ec7u chu\u1ea9n \u0111\u1ec3 tr\u00e1nh nhi\u1ec5m b\u1ea9n v\u00e0 \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 \u0111\u1ecdc ch\u00ednh x\u00e1c.<\/p>\n<div class=\"entry-content-asset videofit\"><iframe loading=\"lazy\" title=\"How to operate conductivity\/resisitivity controller (chimay@chimaytech.com; www.chimaytech.com)\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/6Ndt6aM1G9w?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>Sau khi hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111o pH \u1edf ba \u0111i\u1ec3m kh\u00e1c nhau, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ki\u1ec3m tra \u0111\u1ed9 d\u1ed1c v\u00e0 \u0111\u1ed9 l\u1ec7ch c\u1ee7a \u0111i\u1ec7n c\u1ef1c. \u0110\u1ed9 d\u1ed1c l\u00e0 th\u01b0\u1edbc \u0111o \u0111\u1ed9 nh\u1ea1y c\u1ee7a \u0111i\u1ec7n c\u1ef1c, trong khi \u0111\u1ed9 l\u1ec7ch l\u00e0 th\u01b0\u1edbc \u0111o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a s\u1ed1 \u0111\u1ecdc. N\u1ebfu \u0111\u1ed9 d\u1ed1c ho\u1eb7c \u0111\u1ed9 l\u1ec7ch n\u1eb1m ngo\u00e0i ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c th\u00ec c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i thay th\u1ebf ho\u1eb7c hi\u1ec7u chu\u1ea9n l\u1ea1i \u0111i\u1ec7n c\u1ef1c.<\/p>\n<p>Hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH \u0111\u00fang c\u00e1ch l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c s\u1ed1 \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. Vi\u1ec7c \u0111o pH kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng k\u1ebft lu\u1eadn v\u00e0 quy\u1ebft \u0111\u1ecbnh kh\u00f4ng ch\u00ednh x\u00e1c trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. V\u00ed d\u1ee5, trong ng\u00e0nh th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng, vi\u1ec7c \u0111o \u0111\u1ed9 pH r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 an to\u00e0n c\u1ee7a s\u1ea3n ph\u1ea9m. Trong ng\u00e0nh d\u01b0\u1ee3c ph\u1ea9m, ph\u00e9p \u0111o pH r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a thu\u1ed1c. Trong gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, ph\u00e9p \u0111o \u0111\u1ed9 pH \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ecnh tr\u1ea1ng c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc.<\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c hi\u1ec7u chu\u1ea9n \u0111\u00fang m\u00e1y \u0111o \u0111\u1ed9 pH l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c s\u1ed1 \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u chu\u1ea9n 3 \u0111i\u1ec3m l\u00e0 c\u00e1ch ph\u1ed5 bi\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111o pH tr\u00ean nhi\u1ec1u gi\u00e1 tr\u1ecb pH. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c quy tr\u00ecnh hi\u1ec7u chu\u1ea9n th\u00edch h\u1ee3p v\u00e0 s\u1eed d\u1ee5ng dung d\u1ecbch \u0111\u1ec7m m\u1edbi, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u00e1y \u0111o pH \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n ch\u00ednh x\u00e1c v\u00e0 cung c\u1ea5p s\u1ed1 \u0111\u1ecdc ch\u00ednh x\u00e1c. \u0110\u1ea7u t\u01b0 th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c v\u00e0o vi\u1ec7c hi\u1ec7u ch\u1ec9nh ph\u00f9 h\u1ee3p cu\u1ed1i c\u00f9ng s\u1ebd d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c h\u01a1n v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh t\u1ed1t h\u01a1n trong ng\u00e0nh c\u1ee7a b\u1ea1n.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/Detail-04.png\" alt=\"alt-2412\" class=\"wp-image-2412\" id=\"i2412\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH th\u00edch h\u1ee3p Vi\u1ec7c hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o pH ph\u00f9 h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c s\u1ed1 \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau nh\u01b0 th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng, d\u01b0\u1ee3c ph\u1ea9m, gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng v\u00e0&#8230;<\/p>\n","protected":false},"author":1,"featured_media":20866,"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":[134429,11579,134481],"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\/27334"}],"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=27334"}],"version-history":[{"count":17,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/27334\/revisions"}],"predecessor-version":[{"id":27659,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/27334\/revisions\/27659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media\/20866"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=27334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=27334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=27334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}