{"id":27300,"date":"2024-09-19T15:34:18","date_gmt":"2024-09-19T07:34:18","guid":{"rendered":"https:\/\/shchimay.com\/?p=27300"},"modified":"2024-09-20T12:38:45","modified_gmt":"2024-09-20T04:38:45","slug":"dissolved-oxygen-meter-ppb","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/dissolved-oxygen-meter-ppb\/","title":{"rendered":"m\u00e1y \u0111o oxy h\u00f2a tan ppb"},"content":{"rendered":"<h1 id=\"the-importance-of-monitoring-dissolved-oxygen-levels-in-parts-per-billion-ppb-wpaicgheading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c theo d\u00f5i m\u1ee9c oxy h\u00f2a tan theo ph\u1ea7n t\u1ef7 (ppb)<\/h1>\n<p>\nOxy h\u00f2a tan l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng trong gi\u00e1m s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc. N\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan trong n\u01b0\u1edbc th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng ph\u1ea7n tri\u1ec7u (ppm) ho\u1eb7c miligam tr\u00ean l\u00edt (mg\/L). Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 nh\u1ea1y cao nh\u01b0 c\u01a1 s\u1edf nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n ho\u1eb7c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p, c\u1ea7n ph\u1ea3i \u0111o n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan theo ph\u1ea7n t\u1ef7 (ppb).<\/p>\n<p>Vi\u1ec7c theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan trong ppb l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ee9c kh\u1ecfe v\u00e0 s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e1c sinh v\u1eadt d\u01b0\u1edbi n\u01b0\u1edbc, v\u00ec ngay c\u1ea3 nh\u1eefng bi\u1ebfn \u0111\u1ed9ng nh\u1ecf v\u1ec1 n\u1ed3ng \u0111\u1ed9 oxy c\u0169ng c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn s\u1ef1 s\u1ed1ng s\u00f3t c\u1ee7a ch\u00fang. V\u00ed d\u1ee5, trong c\u00e1c c\u01a1 s\u1edf nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n, vi\u1ec7c duy tr\u00ec m\u1ee9c oxy h\u00f2a tan t\u1ed1i \u01b0u l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1 v\u00e0 c\u00e1c lo\u00e0i th\u1ee7y sinh kh\u00e1c. B\u1eb1ng c\u00e1ch theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan t\u00ednh b\u1eb1ng ppb, ng\u01b0\u1eddi v\u1eadn h\u00e0nh nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng c\u1ee7a h\u1ecd \u0111ang ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc ph\u00f9 h\u1ee3p cho v\u1eadt nu\u00f4i c\u1ee7a h\u1ecd.<\/p>\n<p>Trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p, vi\u1ec7c theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan t\u00ednh b\u1eb1ng ppb c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc kh\u00e1c nhau. Nhi\u1ec1u quy tr\u00ecnh c\u00f4ng nghi\u1ec7p d\u1ef1a v\u00e0o n\u1ed3ng \u0111\u1ed9 oxy c\u1ee5 th\u1ec3 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 mong mu\u1ed1n v\u00e0 th\u1eadm ch\u00ed nh\u1eefng sai l\u1ec7ch nh\u1ecf so v\u1edbi c\u00e1c m\u1ee9c n\u00e0y c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c n\u0103ng su\u1ea5t s\u1ea3n ph\u1ea9m. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y \u0111o oxy h\u00f2a tan c\u00f3 kh\u1ea3 n\u0103ng \u0111o m\u1ee9c t\u00ednh b\u1eb1ng ppb, c\u00e1c nh\u00e0 v\u1eadn h\u00e0nh c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 theo d\u00f5i v\u00e0 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c n\u1ed3ng \u0111\u1ed9 oxy \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh c\u1ee7a h\u1ecd.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/Paddle-Wheel-Flow-Meter-Controller-For-Water-Treatment-System-4.png\" alt=\"alt-324\" class=\"wp-image-324\" id=\"i324\" \/><\/p>\n<p><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-27300-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CCT-5300E-Series.mp4?_=1\" \/><a href=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CCT-5300E-Series.mp4\">http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CCT-5300E-Series.mp4<\/a><\/video><\/div>M\u1ed9t trong nh\u1eefng l\u1ee3i \u00edch ch\u00ednh c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y \u0111o oxy h\u00f2a tan \u0111\u1ec3 \u0111o m\u1ee9c t\u00ednh b\u1eb1ng ppb l\u00e0 \u0111\u1ed9 nh\u1ea1y v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n m\u00e0 n\u00f3 mang l\u1ea1i. M\u00e1y \u0111o oxy h\u00f2a tan truy\u1ec1n th\u1ed1ng \u0111o b\u1eb1ng ppm ho\u1eb7c mg\/L c\u00f3 th\u1ec3 kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c nh\u1eefng thay \u0111\u1ed5i nh\u1ecf v\u1ec1 n\u1ed3ng \u0111\u1ed9 oxy c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn sinh v\u1eadt d\u01b0\u1edbi n\u01b0\u1edbc ho\u1eb7c c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y \u0111o \u0111o b\u1eb1ng ppb, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ngay c\u1ea3 nh\u1eefng bi\u1ebfn \u0111\u1ed9ng nh\u1ecf nh\u1ea5t v\u1ec1 n\u1ed3ng \u0111\u1ed9 oxy v\u00e0 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng kh\u1eafc ph\u1ee5c tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c n\u00e0o x\u1ea3y ra.<\/p>\n<p>M\u1ed9t \u01b0u \u0111i\u1ec3m kh\u00e1c c\u1ee7a vi\u1ec7c theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan trong ppb l\u00e0 kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng c\u1ea1n ki\u1ec7t oxy . Trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng r\u1ea5t nh\u1ea1y c\u1ea3m, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c c\u01a1 s\u1edf nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n ho\u1eb7c c\u00e1c v\u00f9ng n\u01b0\u1edbc t\u1ef1 nhi\u00ean, s\u1ef1 suy gi\u1ea3m oxy c\u00f3 th\u1ec3 x\u1ea3y ra nhanh ch\u00f3ng v\u00e0 g\u00e2y h\u1eadu qu\u1ea3 t\u00e0n kh\u1ed1c cho \u0111\u1eddi s\u1ed1ng th\u1ee7y sinh. B\u1eb1ng c\u00e1ch li\u00ean t\u1ee5c theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan t\u00ednh b\u1eb1ng ppb, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh b\u1ea5t k\u1ef3 s\u1ef1 ki\u1ec7n suy gi\u1ea3m oxy ti\u1ec1m \u1ea9n n\u00e0o v\u00e0 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng ngay l\u1eadp t\u1ee9c \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u00e1c h\u1ea1i \u0111\u1ebfn h\u1ec7 sinh th\u00e1i.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\">N\u1ec1n t\u1ea3ng HMI \u0111i\u1ec1u khi\u1ec3n ch\u01b0\u01a1ng tr\u00ecnh ROS-8600 RO<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>M\u00f4 h\u00ecnh<\/td>\n<td>ROS-8600 m\u1ed9t t\u1ea7ng<\/td>\n<td>S\u00e2n kh\u1ea5u \u0111\u00f4i ROS-8600<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ea1m vi \u0111o<\/td>\n<td>Ngu\u1ed3n n\u01b0\u1edbc0~2000uS\/cm<\/td>\n<td>Ngu\u1ed3n n\u01b0\u1edbc0~2000uS\/cm<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>N\u01b0\u1edbc th\u1ea3i c\u1ea5p 1 0~200uS\/cm<\/td>\n<td>N\u01b0\u1edbc th\u1ea3i c\u1ea5p 1 0~200uS\/cm<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>n\u01b0\u1edbc th\u1ea3i th\u1ee9 c\u1ea5p 0~20uS\/cm<\/td>\n<td>n\u01b0\u1edbc th\u1ea3i th\u1ee9 c\u1ea5p 0~20uS\/cm<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t (t\u00f9y ch\u1ecdn)<\/td>\n<td>\u00c1p su\u1ea5t tr\u01b0\u1edbc\/sau m\u00e0ng<\/td>\n<td>\u00c1p su\u1ea5t tr\u01b0\u1edbc\/sau m\u00e0ng s\u01a1 c\u1ea5p\/th\u1ee9 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea3m bi\u1ebfn pH (t\u00f9y ch\u1ecdn)<\/td>\n<td>&#8212;-<\/td>\n<td>0~14.00pH<\/td>\n<\/tr>\n<tr>\n<td>Thu th\u1eadp t\u00edn hi\u1ec7u<\/td>\n<td>1.\u00c1p su\u1ea5t th\u1ea5p n\u01b0\u1edbc th\u00f4<\/td>\n<td>1.\u00c1p su\u1ea5t th\u1ea5p n\u01b0\u1edbc th\u00f4<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>2.\u00c1p su\u1ea5t th\u1ea5p \u0111\u1ea7u v\u00e0o b\u01a1m t\u0103ng \u00e1p ch\u00ednh<\/td>\n<td>2.\u00c1p su\u1ea5t th\u1ea5p \u0111\u1ea7u v\u00e0o b\u01a1m t\u0103ng \u00e1p ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>3.\u0110\u1ea7u ra \u00e1p su\u1ea5t cao c\u1ee7a b\u01a1m t\u0103ng \u00e1p ch\u00ednh<\/td>\n<td>3.\u0110\u1ea7u ra \u00e1p su\u1ea5t cao c\u1ee7a b\u01a1m t\u0103ng \u00e1p ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>4.M\u1ee9c ch\u1ea5t l\u1ecfng cao c\u1ee7a b\u1ec3 c\u1ea5p 1<\/td>\n<td>4.M\u1ee9c ch\u1ea5t l\u1ecfng cao c\u1ee7a b\u1ec3 c\u1ea5p 1<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>5.M\u1ee9c ch\u1ea5t l\u1ecfng c\u1ee7a b\u1ec3 c\u1ea5p 1 th\u1ea5p<\/td>\n<td>5.M\u1ee9c ch\u1ea5t l\u1ecfng c\u1ee7a b\u1ec3 c\u1ea5p 1 th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>6.T\u00edn hi\u1ec7u ti\u1ec1n x\u1eed l\u00fd\u00a0<\/td>\n<td>\u00c1p su\u1ea5t cao \u0111\u1ea7u ra c\u1ee7a b\u01a1m t\u0103ng \u00e1p th\u1ee9 6.2<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>7.C\u1ed5ng d\u1ef1 ph\u00f2ng \u0111\u1ea7u v\u00e0o x2<\/td>\n<td>7.M\u1ee9c ch\u1ea5t l\u1ecfng cao c\u1ee7a b\u1ec3 c\u1ea5p 2<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>8.M\u1ee9c ch\u1ea5t l\u1ecfng c\u1ee7a b\u1ec3 c\u1ea5p 2 th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>9.T\u00edn \u200b\u200bhi\u1ec7u ti\u1ec1n x\u1eed l\u00fd<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>10.C\u1ed5ng d\u1ef1 ph\u00f2ng \u0111\u1ea7u v\u00e0o x2<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m so\u00e1t \u0111\u1ea7u ra<\/td>\n<td>1.Van c\u1ea5p n\u01b0\u1edbc<\/td>\n<td>1.Van c\u1ea5p n\u01b0\u1edbc<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>2.M\u00e1y b\u01a1m n\u01b0\u1edbc ngu\u1ed3n<\/td>\n<td>2.M\u00e1y b\u01a1m n\u01b0\u1edbc ngu\u1ed3n<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>3.B\u01a1m t\u0103ng \u00e1p s\u01a1 c\u1ea5p<\/td>\n<td>3.B\u01a1m t\u0103ng \u00e1p s\u01a1 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>4.Van x\u1ea3 s\u01a1 c\u1ea5p<\/td>\n<td>4.Van x\u1ea3 s\u01a1 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>5.B\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng s\u01a1 c\u1ea5p<\/td>\n<td>5.B\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng s\u01a1 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>6.N\u01b0\u1edbc s\u01a1 c\u1ea5p qua van x\u1ea3 ti\u00eau chu\u1ea9n<\/td>\n<td>6.N\u01b0\u1edbc s\u01a1 c\u1ea5p qua van x\u1ea3 ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>7.N\u00fat \u0111\u1ea7u ra c\u1ea3nh b\u00e1o<\/td>\n<td>7.B\u01a1m t\u0103ng \u00e1p th\u1ee9 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>8.B\u01a1m d\u1ef1 ph\u00f2ng th\u1ee7 c\u00f4ng<\/td>\n<td>8.Van x\u1ea3 th\u1ee9 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>9.B\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng th\u1ee9 c\u1ea5p<\/td>\n<td>9.B\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng th\u1ee9 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>C\u1ed5ng d\u1ef1 ph\u00f2ng \u0111\u1ea7u ra x2<\/td>\n<td>10.N\u01b0\u1edbc th\u1ee9 c\u1ea5p qua van x\u1ea3 ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>11.N\u00fat \u0111\u1ea7u ra c\u1ea3nh b\u00e1o<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>12.B\u01a1m d\u1ef1 ph\u00f2ng th\u1ee7 c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>\u3000<\/td>\n<td>C\u1ed5ng d\u1ef1 ph\u00f2ng \u0111\u1ea7u ra x2<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ee9c n\u0103ng ch\u00ednh<\/td>\n<td>1.Hi\u1ec7u ch\u1ec9nh h\u1eb1ng s\u1ed1 \u0111i\u1ec7n c\u1ef1c<\/td>\n<td>1.Hi\u1ec7u ch\u1ec9nh h\u1eb1ng s\u1ed1 \u0111i\u1ec7n c\u1ef1c<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>2.C\u00e0i \u0111\u1eb7t c\u1ea3nh b\u00e1o tr\u00e0n<\/td>\n<td>2.C\u00e0i \u0111\u1eb7t c\u1ea3nh b\u00e1o tr\u00e0n<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>3.C\u00f3 th\u1ec3 \u0111\u1eb7t t\u1ea5t c\u1ea3 th\u1eddi gian \u1edf ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c<\/td>\n<td>3.C\u00f3 th\u1ec3 \u0111\u1eb7t t\u1ea5t c\u1ea3 th\u1eddi gian \u1edf ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>4.C\u00e0i \u0111\u1eb7t ch\u1ebf \u0111\u1ed9 x\u1ea3 \u00e1p su\u1ea5t cao v\u00e0 th\u1ea5p<\/td>\n<td>4.C\u00e0i \u0111\u1eb7t ch\u1ebf \u0111\u1ed9 x\u1ea3 \u00e1p su\u1ea5t cao v\u00e0 th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>5.B\u01a1m \u00e1p su\u1ea5t th\u1ea5p \u0111\u01b0\u1ee3c m\u1edf khi ti\u1ec1n x\u1eed l\u00fd<\/td>\n<td>5.B\u01a1m \u00e1p su\u1ea5t th\u1ea5p \u0111\u01b0\u1ee3c m\u1edf khi ti\u1ec1n x\u1eed l\u00fd<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>6.C\u00f3 th\u1ec3 ch\u1ecdn th\u1ee7 c\u00f4ng\/t\u1ef1 \u0111\u1ed9ng khi kh\u1edfi \u0111\u1ed9ng<\/td>\n<td>6.C\u00f3 th\u1ec3 ch\u1ecdn th\u1ee7 c\u00f4ng\/t\u1ef1 \u0111\u1ed9ng khi kh\u1edfi \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>7.Ch\u1ebf \u0111\u1ed9 g\u1ee1 l\u1ed7i th\u1ee7 c\u00f4ng<\/td>\n<td>7.Ch\u1ebf \u0111\u1ed9 g\u1ee1 l\u1ed7i th\u1ee7 c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>8.B\u00e1o \u0111\u1ed9ng n\u1ebfu gi\u00e1n \u0111o\u1ea1n li\u00ean l\u1ea1c<\/td>\n<td>8.B\u00e1o \u0111\u1ed9ng n\u1ebfu gi\u00e1n \u0111o\u1ea1n li\u00ean l\u1ea1c<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>9. Th\u00fac gi\u1ee5c c\u00e0i \u0111\u1eb7t thanh to\u00e1n<\/td>\n<td>9. Th\u00fac gi\u1ee5c c\u00e0i \u0111\u1eb7t thanh to\u00e1n<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>10. T\u00ean c\u00f4ng ty, trang web c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh<\/td>\n<td>10. T\u00ean c\u00f4ng ty, trang web c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>DC24V\u00b110 ph\u1ea7n tr\u0103m <\/td>\n<td>DC24V\u00b110 ph\u1ea7n tr\u0103m <\/td>\n<\/tr>\n<tr>\n<td>Giao di\u1ec7n m\u1edf r\u1ed9ng<\/td>\n<td>1.\u0110\u1ea7u ra r\u01a1le d\u1ef1 tr\u1eef<\/td>\n<td>1.\u0110\u1ea7u ra r\u01a1le d\u1ef1 tr\u1eef<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>2.Giao ti\u1ebfp RS485<\/td>\n<td>2.Giao ti\u1ebfp RS485<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>3.C\u1ed5ng IO d\u1ef1 tr\u1eef, m\u00f4-\u0111un analog<\/td>\n<td>3.C\u1ed5ng IO d\u1ef1 tr\u1eef, m\u00f4-\u0111un analog<\/td>\n<\/tr>\n<tr>\n<td>\u3000<\/td>\n<td>4.M\u00e0n h\u00ecnh \u0111\u1ed3ng b\u1ed9 tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng\/m\u00e1y t\u00ednh\/m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng\u00a0<\/td>\n<td>4.M\u00e0n h\u00ecnh \u0111\u1ed3ng b\u1ed9 tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng\/m\u00e1y t\u00ednh\/m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng\u00a0<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i<\/td>\n<td>\u226685 ph\u1ea7n tr\u0103m <\/td>\n<td>\u226485 ph\u1ea7n tr\u0103m <\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/td>\n<td>0~50\u2103<\/td>\n<td>0~50\u2103<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng<\/td>\n<td>163x226x80mm (Cao x R\u1ed9ng x S\u00e2u)<\/td>\n<td>163x226x80mm (C x R x S)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td>7 inch:215*152mm(r\u1ed9ng*cao)<\/td>\n<td>215*152mm(r\u1ed9ng*cao)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc b\u1ed9 \u0111i\u1ec1u khi\u1ec3n<\/td>\n<td>180*99(d\u00e0i*r\u1ed9ng)<\/td>\n<td>180*99(d\u00e0i*r\u1ed9ng)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc m\u00e1y ph\u00e1t<\/td>\n<td>92*125(d\u00e0i*r\u1ed9ng)<\/td>\n<td>92*125(d\u00e0i*r\u1ed9ng)<\/td>\n<\/tr>\n<tr>\n<td>Ph\u01b0\u01a1ng ph\u00e1p c\u00e0i \u0111\u1eb7t<\/td>\n<td>M\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng: b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c nh\u00fang; B\u1ed9 \u0111i\u1ec1u khi\u1ec3n: m\u1eb7t ph\u1eb3ng c\u1ed1 \u0111\u1ecbnh<\/td>\n<td>M\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng: b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c nh\u00fang; B\u1ed9 \u0111i\u1ec1u khi\u1ec3n: m\u1eb7t ph\u1eb3ng c\u1ed1 \u0111\u1ecbnh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\nT\u00f3m l\u1ea1i, vi\u1ec7c gi\u00e1m s\u00e1t n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan theo ph\u1ea7n t\u1ef7 (ppb) l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec s\u1ee9c kh\u1ecfe v\u00e0 s\u1ef1 th\u1ecbnh v\u01b0\u1ee3ng c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y \u0111o oxy h\u00f2a tan c\u00f3 kh\u1ea3 n\u0103ng \u0111o m\u1ee9c t\u00ednh b\u1eb1ng ppb, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 theo d\u00f5i ch\u00ednh x\u00e1c n\u1ed3ng \u0111\u1ed9 oxy, ph\u00e1t hi\u1ec7n nh\u1eefng dao \u0111\u1ed9ng nh\u1ecf v\u00e0 ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng c\u1ea1n ki\u1ec7t oxy. \u0110\u1ea7u t\u01b0 v\u00e0o m\u00e1y \u0111o oxy h\u00f2a tan ch\u1ea5t l\u01b0\u1ee3ng cao \u0111o b\u1eb1ng ppb l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t cho b\u1ea5t k\u1ef3 ai tham gia nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n, gi\u00e1m s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc ho\u1eb7c c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p trong \u0111\u00f3 vi\u1ec7c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c n\u1ed3ng \u0111\u1ed9 oxy l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c theo d\u00f5i m\u1ee9c oxy h\u00f2a tan theo ph\u1ea7n t\u1ef7 (ppb) Oxy h\u00f2a tan l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng trong gi\u00e1m s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc. 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