{"id":17996,"date":"2022-11-25T11:41:38","date_gmt":"2022-11-25T04:41:38","guid":{"rendered":"https:\/\/vn-tech.com.vn\/?p=17996"},"modified":"2023-03-01T15:36:11","modified_gmt":"2023-03-01T08:36:11","slug":"bo-chuyen-doi-tin-hieu-ac-dc-pr-4179-dan-mach","status":"publish","type":"post","link":"https:\/\/vn-tech.com.vn\/?p=17996","title":{"rendered":"B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u AC\/DC \u2013 PR Electronics 4179 \u0110an M\u1ea1ch"},"content":{"rendered":"<h3 style=\"text-align: center;\"><strong>B\u1ed8 BI\u1ebeN D\u00d2NG V\u00c0 THI\u1ebeT B\u1eca CHUY\u1ec2N \u0110\u1ed4I T\u00cdN HI\u1ec6U T\u1eea B\u1ed8 BI\u1ebeN D\u00d2NG<\/strong><\/h3>\n<p style=\"text-align: left;\"><strong>B\u1ed9 bi\u1ebfn d\u00f2ng (CT d\u00f2ng) v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u CT d\u00f2ng <a href=\"https:\/\/prelectronics.com.vn\/\" target=\"_blank\" rel=\"noopener\">PR Electronics<\/a> <a href=\"https:\/\/www.prelectronics.com\/products\/multifunctional-devices\/4100\/universal-ac-dc-transmitter-4179\/\" target=\"_blank\" rel=\"noopener\">4179<\/a><\/strong><\/p>\n<p>D\u00f2ng \u0111i\u1ec7n c\u0169ng nh\u01b0 \u0111i\u1ec7n \u00e1p c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n th\u01b0\u1eddng c\u00f3 tr\u1ecb s\u1ed1 r\u1ea5t l\u1edbn, kh\u00f4ng th\u1ec3 \u0111\u01b0a tr\u1ef1c ti\u1ebfp v\u00e0o d\u1ee5ng c\u1ee5 \u0111o ho\u1eb7c relay b\u1ea3o v\u1ec7, c\u00e1c thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng kh\u00e1c, v\u00ec v\u1eady c\u00e1c d\u1ee5ng c\u1ee5 v\u00e0 thi\u1ebft b\u1ecb n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c\u00a0\u0111\u1ea5u n\u1ed1i qua b\u1ed9 bi\u1ebfn d\u00f2ng \u0111i\u1ec7n hay c\u00f2n g\u1ecdi l\u00e0 CT d\u00f2ng (<strong><em>current<\/em><\/strong>\u00a0<strong><em>transformer<\/em><\/strong>)<\/p>\n<h4><strong>1. Ch\u1ee9c n\u0103ng<\/strong><\/h4>\n<p>M\u00e1y bi\u1ebfn d\u00f2ng \u0111i\u1ec7n(CT) l\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n d\u00f9ng \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n c\u00f3 tr\u1ecb s\u1ed1 l\u1edbn v\u00e0 \u0111i\u1ec7n \u00e1p cao xu\u1ed1ng d\u00f2ng \u0111i\u1ec7n c\u00f3 tr\u1ecb s\u1ed1 ti\u00eau chu\u1ea9n 5A ho\u1eb7c 1A, \u0111i\u1ec7n \u00e1p an to\u00e0n \u0111\u1ec3 cung c\u1ea5p cho m\u1ea1ch \u0111o l\u01b0\u1eddng, \u0111i\u1ec1u khi\u1ec3n v\u00e0 b\u1ea3o v\u1ec7.<\/p>\n<p>CT c\u00f3 cu\u1ed9n d\u00e2y s\u01a1 c\u1ea5p \u0111\u1ea5u n\u1ed1i ti\u1ebfp v\u00e0o m\u1ea1ch s\u01a1 c\u1ea5p. T\u1ed5ng tr\u1edf c\u1ee7a CT, k\u1ec3 c\u1ea3 t\u1ed5ng tr\u1edf c\u1ee7a ph\u1ee5 t\u1ea3i ph\u00eda th\u1ee9 c\u1ea5p r\u1ea5t b\u00e9 so v\u1edbi t\u1ed5ng tr\u1edf ph\u00eda s\u01a1 c\u1ea5p c\u1ee7a m\u1ea1ch \u0111i\u1ec7n.<\/p>\n<h4><strong>2. C\u1ea5u t\u1ea1o c\u1ee7a CT d\u00f2ng<\/strong><\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-17998 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong3.jpg\" alt=\"C\u1ea5u t\u1ea1o c\u1ee7a CT d\u00f2ng\" width=\"694\" height=\"392\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong3.jpg 694w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong3-300x169.jpg 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong3-600x339.jpg 600w\" sizes=\"(max-width: 694px) 100vw, 694px\" \/><\/p>\n<p>Current Transformer l\u00e0 thi\u1ebft b\u1ecb \u0111o d\u00f2ng v\u1edbi c\u1ea5u t\u1ea1o g\u1ed3m nhi\u1ec1u v\u00f2ng d\u00e2y \u0111\u01b0\u1ee3c cu\u1ed9c tr\u00ean m\u1ed9t khung s\u1eaft t\u1eeb. Nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3 l\u00e0 bi\u1ebfn \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n l\u1edbn tr\u1ef1c ti\u1ebfp ch\u1ea1y qua t\u1ea3i, m\u1ea1ch \u0111\u1ed9ng l\u1ef1c theo m\u1ed9t h\u1ec7 s\u1ed1 nh\u1ea5t \u0111\u1ecbnh. C\u00f3 3 lo\u1ea1i CT d\u00f2ng c\u01a1 b\u1ea3n tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay l\u00e0: d\u00e2y qu\u1ea5n, v\u00f2ng, kh\u1ed1i.<\/p>\n<p>Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang ta th\u01b0\u1eddng th\u1ea5y H\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o nh\u01b0\u00a0 sau: <strong>10\/5A; 15\/5; 20\/5; 25\/5; 50\/5A; 75\/5; 100\/5; 150\/5; 200\/5; 250\/5; 300\/5; 400\/5; 500\/5; 600\/5; 700\/5; 750\/5; 800\/5; 850\/5; 900\/5; 950\/5 ; 1.000\/5; 1.500\/5,<\/strong>..\u2026. V\u1eady c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y c\u00f3 \u00fd ngh\u0129a g\u00ec ? \u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a l\u00e0 khi cho d\u00f2ng\u00a0<strong>100A, 300A<\/strong>\u00a0qua CT d\u00f2ng th\u00ec ta thu \u0111\u01b0\u1ee3c d\u00f2ng\u00a0<strong>5A, 1A<\/strong>. Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n nh\u01b0 bi\u1ebfn t\u1ea7n, PLC l\u1ea1i kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c d\u00f2ng 5A, 1A n\u00e0y n\u00ean b\u1eaft bu\u1ed9c ta ph\u1ea3i s\u1eed d\u1ee5ng th\u00eam b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u.<\/p>\n<figure id=\"attachment_17999\" aria-describedby=\"caption-attachment-17999\" style=\"width: 622px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-17999 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong4.png\" alt=\"B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u PR electronic 4179 s\u1ea3n xu\u1ea5t t\u1ea1i \u0110an M\u1ea1ch\" width=\"632\" height=\"417\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong4.png 632w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong4-300x198.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong4-600x396.png 600w\" sizes=\"(max-width: 632px) 100vw, 632px\" \/><figcaption id=\"caption-attachment-17999\" class=\"wp-caption-text\"><em>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u PR electronic 4179 s\u1ea3n xu\u1ea5t t\u1ea1i \u0110an M\u1ea1ch<\/em><\/figcaption><\/figure>\n<ul>\n<li>Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u CT d\u00f2ng 0 \u2013 5 V AC sang 4-20mA v\u00e0 0 \u2013 10 V<\/li>\n<li>\u0110o t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u<\/li>\n<li>\u0110\u1ea7u ra t\u00edn hi\u1ec7u 4-20mA active ho\u1eb7c passive<\/li>\n<li>L\u1eadp tr\u00ecnh, theo d\u00f5i qu\u00e1 tr\u00ecnh qua b\u1ed9 hi\u1ec3n th\u1ecb 45xx<\/li>\n<li>Th\u1eddi gian \u0111\u00e1p \u1ee9ng &lt;0,75 gi\u00e2y v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c tuy\u1ec7t v\u1eddi 0,3%<\/li>\n<li>Ngu\u1ed3n c\u1ea5p \u0111a n\u0103ng 21,6\u2026 253 VAC \/ 19,2 .<a href=\"https:\/\/www.thietbicongnghiepdien.com\/\" target=\"_blank\" rel=\"noopener\">.<\/a>. 300 VDC<\/li>\n<\/ul>\n<h4><strong>3. Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 bi\u1ebfn d\u00f2ng<\/strong><\/h4>\n<p>CT d\u00f2ng c\u00f3 hai ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c c\u01a1 b\u1ea3n: ch\u1ebf \u0111\u1ed9 ng\u1eafn m\u1ea1ch v\u00e0 ch\u1ebf \u0111\u1ed9 h\u1edf m\u1ea1ch.<\/p>\n<ul>\n<li><strong><em>Ch\u1ebf \u0111\u1ed9 ng\u1eafn m\u1ea1ch c\u1ee7a d\u00f2ng s\u01a1 c\u1ea5p, th\u1ee9c c\u1ea5p c\u00f3 ph\u1ee5 t\u1ea3i Z2:<\/em><\/strong>\u00a0T\u1ef7 s\u1ed1 gi\u1eefa d\u00f2ng ng\u1eafn m\u1ea1ch s\u01a1 c\u1ea5p tr\u00ean d\u00f2ng \u0111\u1ecbnh m\u1ee9c g\u1ecdi l\u00e0 b\u1ed9i s\u1ed1 d\u00f2ng c\u1ee7a m\u00e1y bi\u1ebfn d\u00f2ng. Khi b\u1ed9i s\u1ed1 n\u00e0y l\u1edbn, sai s\u1ed1 CT t\u0103ng v\u00e0 sai s\u1ed1 n\u00e0y c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng th\u1ee9 c\u1ea5p ho\u1eb7c t\u1ea3i. Th\u01b0\u1eddng v\u1edbi m\u1ea1ch b\u1ea3o v\u1ec7, b\u1ed9i s\u1ed1 d\u00f2ng \u0111i\u1ec7n c\u1ee7a CT d\u00f2ng ph\u1ea3i \u0111\u1ea1t gi\u00e1 tr\u1ecb sao cho sai s\u1ed1 c\u1ee7a n\u00f3 d\u01b0\u1edbi 10%.<\/li>\n<li><strong><em>Ch\u1ebf \u0111\u1ed9 h\u1edf m\u1ea1ch th\u1ee9 c\u1ea5p:<\/em><\/strong> khi th\u1ee9 c\u1ea5p h\u1edf m\u1ea1ch, ph\u00eda th\u1ee9 c\u1ea5p s\u1ebd c\u00f3 \u0111i\u1ec7n \u00e1p c\u1ea3m \u1ee9ng v\u1edbi bi\u00ean \u0111\u1ed9 r\u1ea5t cao g\u00e2y nguy hi\u1ec3m cho ng\u01b0\u1eddi v\u00e0 c\u00e1c thi\u1ebft b\u1ecb th\u1ee9 c\u1ea5p. \u0110\u1ec3 ch\u1ed1ng hi\u1ec7n t\u01b0\u1ee3ng b\u1ea3o h\u00f2a trong m\u1ea1ch t\u1eeb, ng\u01b0\u1eddi ta c\u00f2n ch\u1ebf t\u1ea1o ra m\u00e1y bi\u1ebfn d\u00f2ng c\u00f3 khe h\u1edf kh\u00f4ng kh\u00ed hay c\u00f2n g\u1ecdi l\u00e0 bi\u1ebfn d\u00f2ng tuy\u1ebfn t\u00ednh.<\/li>\n<\/ul>\n<p>CT d\u00f2ng c\u00f3 t\u1ef7 s\u1ed1 d\u00f2ng \u0111i\u1ec7n t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi s\u1ed1 v\u00f2ng d\u00e2y qu\u1ea5n. Do \u0111\u00f3, ch\u00fang ta ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1ef7 s\u1ed1 bi\u1ebfn d\u00f2ng b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i s\u1ed1 v\u00f2ng d\u00e2y qu\u1ea5n ph\u00eda s\u01a1 c\u1ea5p ho\u1eb7c th\u1ee9 c\u1ea5p.<\/p>\n<h4><strong>4. \u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u PR Electronics<\/strong><\/h4>\n<p><strong><em>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u PR electronics 4179\u00a0 s\u1ea3n xu\u1ea5t t\u1ea1i \u0110an M\u1ea1ch<\/em><\/strong><\/p>\n<ul>\n<li>Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u CT d\u00f2ng 0 \u2013 5 V AC sang 4-20 mA v\u00e0 0\u201310 V<\/li>\n<li>\u0110o t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u<\/li>\n<li>\u0110\u1ea7u ra t\u00edn hi\u1ec7u 4-20 mA active ho\u1eb7c passive<\/li>\n<li>L\u1eadp tr\u00ecnh, theo d\u00f5i qu\u00e1 tr\u00ecnh qua b\u1ed9 hi\u1ec3n th\u1ecb 45xx truy\u1ec1n th\u00f4ng modbus RS485<\/li>\n<li>Th\u1eddi gian \u0111\u00e1p \u1ee9ng &lt;0,75 gi\u00e2y v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c tuy\u1ec7t v\u1eddi 0,3%<\/li>\n<li>Ngu\u1ed3n c\u1ea5p \u0111a n\u0103ng 21,6\u2026 253 VAC \/ 19,2 .<a href=\"https:\/\/www.thietbicongnghiepdien.com\/\" target=\"_blank\" rel=\"noopener\">.<\/a>. 300 VDC<\/li>\n<\/ul>\n<h5><strong>a. Gi\u00e1m s\u00e1t tr\u1ea1m bi\u1ebfn \u00e1p<\/strong><\/h5>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18000 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong5.png\" alt=\"\" width=\"717\" height=\"571\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong5.png 717w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong5-300x239.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong5-600x478.png 600w\" sizes=\"(max-width: 717px) 100vw, 717px\" \/><\/p>\n<p>Gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng tr\u1ea1m bi\u1ebfn \u00e1p l\u00e0 m\u1ed9t y\u00eau c\u1ea7u quan tr\u1ecdng. D\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c l\u00e0 th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i s\u1ea3n v\u00e0 th\u00edch \u1ee9ng v\u1edbi vi\u1ec7c thay \u0111\u1ed5i \u0111i\u1ec1u ki\u1ec7n t\u1ea3i theo th\u1eddi gian.<\/p>\n<p>Nhi\u1ec1u ph\u00e9p \u0111o \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb m\u1ed9t m\u00e1y bi\u1ebfn \u00e1p bao g\u1ed3m, nhi\u1ec7t \u0111\u1ed9 d\u1ea7u, \u00e1p su\u1ea5t, m\u1ee9c &amp; l\u01b0u l\u01b0\u1ee3ng, \u0111\u1ed9 rung, \u0111\u1ed9 \u1ea9m, m\u1eadt \u0111\u1ed9 kh\u00ed SF6, ph\u00e2n t\u00edch kh\u00ed h\u00f2a tan, d\u00f2ng \u0111i\u1ec7n &amp; \u0111i\u1ec7n \u00e1p.<\/p>\n<p>Trong \u1ee9ng d\u1ee5ng n\u00e0y, CT d\u00f2ng c\u1ee7a tr\u1ea1m bi\u1ebfn \u00e1p cung c\u1ea5p t\u00edn hi\u1ec7u cho 4179 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi t\u1ea3i m\u00e1y bi\u1ebfn \u00e1p v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh 4-20mA \u0111\u1ec3 truy\u1ec1n l\u1ea1i cho \u0110\u01a1n v\u1ecb gi\u00e1m s\u00e1t bi\u1ebfn \u00e1p, t\u1eeb \u0111\u00f3 chuy\u1ec3n d\u1eef li\u1ec7u theo d\u00f5i t\u00ecnh tr\u1ea1ng m\u00e1y bi\u1ebfn \u00e1p sang RTU \u0111\u1ec3 truy\u1ec1n \u0111\u1ebfn trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<h5><strong>b. M\u00e1y tr\u1ed9n b\u00f9n trong h\u1ec7 th\u1ed1ng x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i<\/strong><\/h5>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18001 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong6.png\" alt=\"\" width=\"902\" height=\"597\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong6.png 902w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong6-300x199.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong6-768x508.png 768w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong6-600x397.png 600w\" sizes=\"(max-width: 902px) 100vw, 902px\" \/><\/p>\n<p>Trong h\u1ec7 th\u1ed1ng x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i, m\u00e1y tr\u1ed9n b\u00f9n r\u1ea5t quan tr\u1ecdng trong kh\u00e2u x\u1eed l\u00fd l\u00e0m l\u01b0u th\u00f4ng h\u00e0m l\u01b0\u1ee3ng b\u00f9n trong b\u1ec3 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u l\u01b0\u1ee3ng b\u00f9n t\u00edch t\u1ee5 c\u1eb7n \u1edf \u0111\u00e1y b\u1ec3, ph\u00e2n ph\u1ed1i nhi\u1ec7t \u0111\u1ed9 v\u00e0 gi\u1eef l\u01b0\u1ee3ng c\u1eb7n \u1edf tr\u1ea1ng th\u00e1i l\u01a1 l\u1eedng trong ch\u1ea5t l\u1ecfng<\/p>\n<p>Trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh, v\u1eadt li\u1ec7u s\u1ee3i c\u00f3 th\u1ec3 t\u00edch t\u1ee5 tr\u00ean c\u00e1c l\u01b0\u1ee1i c\u1ee7a m\u00e1y tr\u1ed9n, l\u00e0m gi\u00e1n \u0111o\u1ea1n hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh tr\u1ed9n v\u00e0 g\u00e2y th\u00eam \u00e1p l\u1ef1c l\u00ean tr\u1ee5c.<\/p>\n<p>Trong \u1ee9ng d\u1ee5ng n\u00e0y, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u PR electronic 4179\u00a0 chuy\u1ec3n t\u00edn hi\u1ec7u d\u00f2ng 0-5A AC t\u1eeb CT d\u00f2ng c\u1ee7a \u0111\u1ed9ng c\u01a1 tr\u1ed9n th\u00e0nh 4-20mA \u0111\u1ec3 truy\u1ec1n l\u1ea1i cho h\u1ec7 th\u1ed1ng SCADA, t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh xem c\u00f3 d\u1eebng \/ b\u00e1o \u0111\u1ed9ng hay \u0111\u1ea3o chi\u1ec1u quay \u0111\u1ed9ng c\u01a1 \u0111\u1ec3 tr\u00e1nh nguy c\u01a1 qu\u00e1 \u00e1p v\u00e0 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 tr\u1ed9n<\/p>\n<h5><strong>c. Trong l\u00f2 nung th\u00e9p<\/strong><\/h5>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18002 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong7.png\" alt=\"\" width=\"863\" height=\"694\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong7.png 863w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong7-300x241.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong7-768x618.png 768w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong7-600x483.png 600w\" sizes=\"(max-width: 863px) 100vw, 863px\" \/><\/p>\n<p>L\u00f2 \u0111i\u1ec7n h\u1ed3 quang l\u00e0 l\u00f2 nung l\u00e0m n\u00f3ng v\u1eadt li\u1ec7u t\u00edch \u0111i\u1ec7n b\u1eb1ng h\u1ed3 quang \u0111i\u1ec7n. M\u1ed9t d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1c \u0111i\u1ec7n c\u1ef1c \u0111\u1ec3 t\u1ea1o th\u00e0nh h\u1ed3 quang cho v\u1eadt li\u1ec7u t\u00edch \u0111i\u1ec7n. Nhi\u1ec7t \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi h\u1ed3 quang n\u00e0y l\u00e0m tan ch\u1ea3y kim lo\u1ea1i. Trong qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y, c\u00e1c kim lo\u1ea1i kh\u00e1c (h\u1ee3p kim s\u1eaft) \u0111\u01b0\u1ee3c th\u00eam v\u00e0o th\u00e9p \u0111\u1ec3 t\u1ea1o \u00a0th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ea7n thi\u1ebft c\u1ee7a th\u00e9p<\/p>\n<p>D\u00f2ng h\u1ed3 quang \u0111i\u1ec7n ph\u1ea3i ch\u00ednh x\u00e1c cho qu\u00e1 tr\u00ecnh nung th\u00e9p hi\u1ec7u qu\u1ea3, Ki\u1ec3m so\u00e1t d\u00f2ng \u00a0h\u1ed3 quang \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng su\u1ea5t h\u1ed3 quang \u0111i\u1ec7n v\u00e0 chi\u1ec1u d\u00e0i h\u1ed3 quang (\u0111\u1ed9 cao \u0111i\u1ec7n c\u1ef1c) gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c v\u00e0 v\u1eadt li\u1ec7u t\u00edch \u0111i\u1ec7n.<\/p>\n<p>Trong \u1ee9ng d\u1ee5ng n\u00e0y, B\u1ed9 bi\u1ebfn d\u00f2ng cung c\u1ea5p t\u00edn hi\u1ec7u 0-5A AC cho b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u 4179 t\u1ef7 l\u1ec7 v\u1edbi d\u00f2ng h\u1ed3 quang. T\u00edn hi\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh 4-20mA \u0111\u1ec3 truy\u1ec1n l\u1ea1i cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n PID \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n c\u00f4ng su\u1ea5t h\u1ed3 quang \u0111i\u1ec7n v\u00e0 chi\u1ec1u d\u00e0i h\u1ed3 quang.<\/p>\n<ul>\n<li><em>Ngo\u00e0i nh\u1eefng \u1ee9ng d\u1ee5ng tr\u00ean th\u00ec b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u 4179 c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng tr\u00ean th\u1ef1c t\u1ebf nh\u01b0: gi\u00e1m s\u00e1t d\u00f2ng c\u00e1c h\u1ec7 th\u1ed1ng b\u0103ng t\u1ea3i, c\u00e1nh khu\u1ea5y, m\u00e1y nghi\u1ec1n \u0111\u00e1, m\u00e1y n\u00e9n kh\u00ed, m\u00e1y l\u1ea1nh, c\u00e1c lo\u1ea1i b\u01a1m\u2026t\u1eeb \u0111\u00f3 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111\u01b0a t\u00edn hi\u1ec7u 4-20 mA v\u1ec1 trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 theo d\u00f5i, gi\u00e1m s\u00e1t d\u00f2ng c\u00e1c \u0111\u1ed9ng c\u01a1 \u0111\u1ec3 c\u00f3 k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec, s\u1eeda ch\u1eefa ph\u00f9 h\u1ee3p nh\u1eb1m n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t, tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb.<\/em><\/li>\n<li><em>Gi\u00e1m s\u00e1t d\u00f2ng \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng qu\u1ea1t l\u00e0m m\u00e1t<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18003 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong8.png\" alt=\"\" width=\"574\" height=\"161\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong8.png 574w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong8-300x84.png 300w\" sizes=\"(max-width: 574px) 100vw, 574px\" \/><\/p>\n<ul>\n<li><em>Gi\u00e1m s\u00e1t n\u0103ng l\u01b0\u1ee3ng cung c\u1ea5p cho h\u1ec7 th\u1ed1ng x\u1eed l\u00fd n\u01b0\u1edbc<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18004 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong9.png\" alt=\"\" width=\"565\" height=\"148\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong9.png 565w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong9-300x79.png 300w\" sizes=\"(max-width: 565px) 100vw, 565px\" \/><\/p>\n<ul>\n<li><em>Gi\u00e1m s\u00e1t t\u1ea3i c\u1ee5c b\u1ed9 c\u1ee7a c\u00e1c tr\u1ea1m bi\u1ebfn \u00e1p thay v\u00ec c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p c\u0169.<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18005 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong10.png\" alt=\"\" width=\"613\" height=\"276\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong10.png 613w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong10-300x135.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong10-600x270.png 600w\" sizes=\"(max-width: 613px) 100vw, 613px\" \/><\/p>\n<ul>\n<li><em>Gi\u00e1m s\u00e1t n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 c\u1ee7a m\u00e1y phun s\u01b0\u01a1ng<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18006 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong11.png\" alt=\"\" width=\"620\" height=\"183\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong11.png 620w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong11-300x89.png 300w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong11-600x177.png 600w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><\/p>\n<ul>\n<li><em>4179 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m so\u00e1t d\u00f2ng \u0111i\u1ec7n d\u01b0\u1edbi \u0111\u1ed9ng c\u01a1 b\u01a1m n\u1ebfu b\u01a1m b\u1ecb m\u1ea5t \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh l\u00e0m s\u1ea1ch b\u1ed9 l\u1ecdc v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u1ebf \u0111\u1ed9 l\u1ecdc. Vi\u1ec7c m\u1ea5t n\u0103ng l\u01b0\u1ee3ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ch\u1ea1y kh\u00f4 c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng m\u00e1y b\u01a1m.<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18007 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong12.jpg\" alt=\"\" width=\"384\" height=\"288\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong12.jpg 384w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong12-300x225.jpg 300w\" sizes=\"(max-width: 384px) 100vw, 384px\" \/><\/p>\n<ul>\n<li><em>\u1ee8ng d\u1ee5ng \u0111o \u0111i\u1ec7n \u00e1p l\u01b0\u1edbi 120VAC \/ 230VAC c\u1ee7a m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/em><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18008 size-full\" src=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong13.png\" alt=\"\" width=\"577\" height=\"168\" srcset=\"https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong13.png 577w, https:\/\/vn-tech.com.vn\/wp-content\/uploads\/2022\/11\/CTDong13-300x87.png 300w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/><\/p>\n<p>&#8230;<\/p>\n<p><a href=\"https:\/\/vn-tech.com.vn\/\"><strong>VN Tech<\/strong><\/a> l\u00e0 \u0111\u1ea1i di\u1ec7n ph\u00e2n ph\u1ed1i ch\u00ednh th\u1ee9c <strong>b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u<\/strong> PR Electronics 4179 t\u1eeb \u0110an M\u1ea1ch v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c t\u1eeb thi\u1ebft b\u1ecb \u0111o, t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 c\u00f4ng nghi\u1ec7p xu\u1ea5t x\u1ee9 100% t\u1eeb Ch\u00e2u \u00c2u.<\/p>\n<p>T\u01b0 v\u1ea5n v\u00e0 \u0111\u01b0a gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u \u0111\u1ebfn Qu\u00fd kh\u00e1ch h\u00e0ng. Li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u00e0 h\u1ed7 tr\u1ee3 t\u1ed1t nh\u1ea5t.<\/p>\n<div dir=\"auto\">\n<p>Xem th\u00eam b\u00e0i vi\u1ebft:<\/p>\n<ul>\n<li><a href=\"https:\/\/vn-tech.com.vn\/bo-chuyen-doi-tin-hieu-va-cac-loai-tin-hieu.html\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u v\u00e0 c\u00e1c lo\u1ea1i t\u00edn hi\u1ec7u ph\u1ed5 bi\u1ebfn<\/a><\/li>\n<li><a href=\"https:\/\/vn-tech.com.vn\/10-cau-hoi-man-hinh-hien-thi-tin-hieu-pr-4511.html\">10 c\u00e2u h\u1ecfi \u0111\u00e1p v\u1ec1 m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb t\u00edn hi\u1ec7u PR 4511<\/a><\/li>\n<\/ul>\n<div dir=\"auto\">\u2014\u2014\u2013<\/div>\n<div dir=\"auto\">\n<div dir=\"auto\"><strong><a href=\"https:\/\/vntechgroup.com.vn\/\" target=\"_blank\" rel=\"noopener\">VNTECH GROUP<\/a>\u00a0\u2013 Your Partner For Automation, Instrumentation &amp; Industrial Valves<\/strong><\/div>\n<div dir=\"auto\">C\u00f4ng Ty Thi\u1ebft B\u1ecb C\u00f4ng Nghi\u1ec7p Vi\u1ec7t Nh\u1eadt<\/div>\n<div dir=\"auto\">Hotline: 0918 113 733<\/div>\n<div dir=\"auto\">Email: info@vntechgroup.com.vn<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ed8 BI\u1ebeN D\u00d2NG V\u00c0 THI\u1ebeT B\u1eca CHUY\u1ec2N \u0110\u1ed4I T\u00cdN HI\u1ec6U T\u1eea B\u1ed8 BI\u1ebeN D\u00d2NG B\u1ed9 bi\u1ebfn d\u00f2ng (CT d\u00f2ng) v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u CT d\u00f2ng PR Electronics 4179 D\u00f2ng \u0111i\u1ec7n c\u0169ng nh\u01b0 \u0111i\u1ec7n \u00e1p c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n th\u01b0\u1eddng c\u00f3 tr\u1ecb s\u1ed1 r\u1ea5t l\u1edbn, kh\u00f4ng th\u1ec3 \u0111\u01b0a tr\u1ef1c ti\u1ebfp &#8230; <a title=\"B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u AC\/DC \u2013 PR Electronics 4179 \u0110an M\u1ea1ch\" class=\"read-more\" href=\"https:\/\/vn-tech.com.vn\/?p=17996\" aria-label=\"More on B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u AC\/DC \u2013 PR Electronics 4179 \u0110an M\u1ea1ch\">\u0110\u1ecdc ti\u1ebfp<\/a><\/p>\n","protected":false},"author":8,"featured_media":17997,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[229],"tags":[5144,5146,4914,5148,4908,4934,5018],"class_list":["post-17996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","tag-5144","tag-bo-bien-dong","tag-bo-chuyen-doi-tin-hieu","tag-ct-dong","tag-pr-electronics","tag-vn-tech","tag-vntech-group"],"lang":"vi","translations":{"vi":17996},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/17996"}],"collection":[{"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17996"}],"version-history":[{"count":4,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/17996\/revisions"}],"predecessor-version":[{"id":18342,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/17996\/revisions\/18342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=\/wp\/v2\/media\/17997"}],"wp:attachment":[{"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vn-tech.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}