{"id":1767,"date":"2026-09-10T05:01:59","date_gmt":"2026-09-10T05:01:59","guid":{"rendered":"https:\/\/benlongkj.com\/?p=1767"},"modified":"2026-09-10T05:02:02","modified_gmt":"2026-09-10T05:02:02","slug":"measurement-and-measuring-instruments","status":"publish","type":"post","link":"https:\/\/benlongkj.com\/vi\/blog\/measurement-and-measuring-instruments\/","title":{"rendered":"M\u00f4 t\u1ea3 chi ti\u1ebft v\u1ec1 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng v\u00e0 d\u1ee5ng c\u1ee5 \u0111o cho thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m c\u1ea7u dao"},"content":{"rendered":"<p>Trong b\u1ea5t k\u1ef3 cu\u1ed9c ki\u1ec3m to\u00e1n nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t c\u1ea7u dao, ki\u1ec3m to\u00e1n vi\u00ean th\u01b0\u1eddng chuy\u1ec3n tr\u1ecdng t\u00e2m t\u1eeb ch\u00ednh c\u1ea7u dao sang thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m c\u1ea7u dao \u0111\u00f3. C\u00e2u h\u1ecfi li\u00ean quan l\u00e0 b\u00e0n th\u1eed c\u00f3 \u0111\u00e1ng tin c\u1eady hay kh\u00f4ng. Th\u1eddi gian 47,2 gi\u00e2y kh\u00f4ng c\u00f3 \u00fd ngh\u0129a n\u1ebfu \u0111\u1ee9ng ri\u00eang l\u1ebb. Quan tr\u1ecdng l\u00e0 bi\u1ebft \u0111\u01b0\u1ee3c ph\u00e9p \u0111o n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb \u0111\u00e2u v\u00e0 d\u1ef1a tr\u00ean nh\u1eefng ph\u00e1t hi\u1ec7n n\u00e0o m\u00e0 n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi ti\u00eau chu\u1ea9n qu\u1ed1c gia v\u1ec1 gi\u00e2y. Do \u0111\u00f3, \u0111\u00e2y l\u00e0 chu\u1ed7i c\u00e1c ph\u00e9p \u0111o m\u00e0 m\u1ed7i ph\u00e9p \u0111o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh th\u00f4ng qua t\u00e0i li\u1ec7u.<\/p>\n<p>\u0110\u00e2y l\u00e0 l\u0129nh v\u1ef1c c\u1ee7a <strong>\u0111o l\u01b0\u1eddng v\u00e0 thi\u1ebft b\u1ecb \u0111o<\/strong>: \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t MCB, MCCB, RCCB v\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o n\u0103ng l\u01b0\u1ee3ng, \u0111\u00e2y l\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf h\u01a1n l\u00e0 b\u00e0i t\u1eadp tr\u00ed tu\u1ec7. N\u00f3i c\u00e1ch kh\u00e1c, ng\u01b0\u1eddi ta m\u1eb7c \u0111\u1ecbnh r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 v\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n b\u1edfi ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u1edbi t\u00e0i li\u1ec7u ph\u00f9 h\u1ee3p.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y tr\u00ecnh b\u00e0y c\u00e1ch \u0111o nh\u1eefng g\u00ec c\u1ea7n \u0111o t\u1ea1i b\u00e0n th\u1eed c\u1ea7u dao, c\u00e1ch hi\u1ec3u chu\u1ed7i c\u00e1c ph\u00e9p \u0111o, c\u00e1ch \u0111\u1ecdc b\u00e1o c\u00e1o hi\u1ec7u chu\u1ea9n t\u1eeb ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn, c\u00e1ch x\u00e1c \u0111\u1ecbnh kho\u1ea3ng th\u1eddi gian th\u1eed nghi\u1ec7m v\u00e0 c\u00e1ch t\u00edch h\u1ee3p kh\u1ea3 n\u0103ng \u0111o l\u01b0\u1eddng v\u00e0o h\u1ee3p \u0111\u1ed3ng mua h\u00e0ng ngay c\u1ea3 tr\u01b0\u1edbc khi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t.<\/p>\n<h2>\u00dd ngh\u0129a c\u1ee7a \u0110o l\u01b0\u1eddng v\u00e0 Thi\u1ebft b\u1ecb \u0110o trong Nh\u00e0 m\u00e1y C\u1ea7u dao<\/h2>\n<p>Trong k\u1ef9 thu\u1eadt k\u1ef9 thu\u1eadt, <strong>thi\u1ebft b\u1ecb \u0111o<\/strong> l\u00e0 c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t ph\u00e9p \u0111o nh\u1ea5t \u0111\u1ecbnh. Trong m\u1ed9t nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n h\u1ea1 th\u1ebf kh\u00e1c nhau, vi\u1ec7c n\u00e0y tr\u1edf n\u00ean ch\u00ednh x\u00e1c v\u00e0 ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u v\u00ec th\u01b0\u1eddng th\u00ec m\u1ed7i ph\u00e9p \u0111o c\u1ea7n thi\u1ebft ho\u1eb7c r\u1ea5t l\u1edbn, r\u1ea5t nh\u1ecf, ho\u1eb7c c\u00f3 th\u1eddi gian ng\u1eafn.<\/p>\n<p>S\u1ea3n xu\u1ea5t c\u1ea7u dao bao g\u1ed3m vi\u1ec7c \u0111o n\u0103m lo\u1ea1i ph\u00e9p \u0111o kh\u00e1c nhau, \u0111\u00f2i h\u1ecfi c\u00e1c lo\u1ea1i <strong>thi\u1ebft b\u1ecb \u0111o<\/strong>:<\/p>\n<ul>\n<li>D\u00f2ng \u0111i\u1ec7n. B\u1eaft \u0111\u1ea7u t\u1eeb d\u00f2ng \u0111\u1ecbnh m\u1ee9c 6 A trong MCB gia \u0111\u00ecnh v\u00e0 t\u0103ng l\u00ean \u0111\u1ebfn 10 kA c\u1ee7a d\u00f2ng ti\u1ebfp c\u1eadn t\u1ee9c th\u1eddi. D\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng bi\u1ebfn d\u00f2ng, cu\u1ed9n Rogowski ho\u1eb7c \u0111i\u1ec7n tr\u1edf shunt ch\u00ednh x\u00e1c c\u1ea5p ngu\u1ed3n cho \u0111\u1ed3ng h\u1ed3 hi\u1ec7u chu\u1ea9n.<br \/>\nTh\u1eddi gian. Th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng nhi\u1ec7t ph\u1ea3i dao \u0111\u1ed9ng t\u1eeb v\u00e0i gi\u00e2y \u0111\u1ebfn v\u00e0i gi\u1edd trong khi th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng t\u1eeb t\u00ednh ph\u1ea3i \u0111\u01b0\u1ee3c \u0111o trong v\u00e0i mili gi\u00e2y. Th\u1eddi gian \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng b\u1ed9 \u0111\u1ebfm th\u1eddi gian k\u1ef9 thu\u1eadt s\u1ed1 tham chi\u1ebfu tinh th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00f3ng b\u1edfi c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n ng\u1eaft m\u1ea1ch.<br \/>\n\u0110i\u1ec7n tr\u1edf. Gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m ph\u1ea3i \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng micro ohm k\u1ebf Kelvin. \u0110\u1ed1i v\u1edbi \u0111i\u1ec7n tr\u1edf \u0111\u1ea7u cu\u1ed1i tr\u00ean 100 micro ohm, n\u00f3 b\u1eaft \u0111\u1ea7u l\u00e0m bi\u1ebfn d\u1ea1ng d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o c\u1ea7u dao.<br \/>\n\u0110i\u1ec7n \u00e1p. C\u00e1ch \u0111i\u1ec7n ch\u1ecbu th\u1eed nghi\u1ec7m t\u0103ng d\u1ea7n v\u1edbi \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u t\u1eeb 1500 V \u0111\u1ebfn 2500 V v\u00e0 \u0111\u01b0\u1ee3c \u0111o c\u00f9ng v\u1edbi gi\u00e1 tr\u1ecb d\u00f2ng r\u00f2.<br \/>\nNhi\u1ec7t \u0111\u1ed9. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a kh\u00f4ng gian xung quanh v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ti\u1ebfp \u0111i\u1ec3m trong qu\u00e1 tr\u00ecnh \u0111o.<\/li>\n<\/ul>\n<p>M\u1ed7i lo\u1ea1i quy tr\u00ecnh \u0111o l\u01b0\u1eddng y\u00eau c\u1ea7u thi\u1ebft b\u1ecb \u0111o c\u1ee5 th\u1ec3, ph\u1ea1m vi \u0111\u1eb7c t\u00ednh c\u1ee5 th\u1ec3, h\u00e0nh vi tr\u00f4i d\u1ea1t v\u00e0 th\u1eadm ch\u00ed y\u00eau c\u1ea7u hi\u1ec7u chu\u1ea9n c\u1ee5 th\u1ec3. Thi\u1ebft b\u1ecb \u0111o kh\u00f4ng c\u00f3 m\u1ed9t \u0111i\u1ec1u ki\u1ec7n hi\u1ec7u chu\u1ea9n duy nh\u1ea5t, m\u00e0 c\u00f3 c\u00f9ng s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec1u ki\u1ec7n hi\u1ec7u chu\u1ea9n nh\u01b0 s\u1ed1 \u0111i\u1ec3m \u0111o c\u1ee7a n\u00f3, do \u0111\u00f3 t\u1ea1o c\u01a1 h\u1ed9i cho b\u1ea5t k\u1ef3 ki\u1ec3m to\u00e1n vi\u00ean n\u00e0o c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0a ra v\u00e0 h\u1ecfi m\u1ed9t c\u00e1ch tri\u1ec7t \u0111\u1ec3 v\u1ec1 b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n n\u00e0o trong s\u1ed1 \u0111\u00f3.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1768\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/09\/Calibration-Traceability-in-Breaker-Testing.webp\" alt=\"\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>B\u00e0n th\u1eed nghi\u1ec7m ch\u00ednh n\u00f3 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111o<\/h2>\n<p>Thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong c\u00e1ch h\u1ea7u h\u1ebft c\u00e1c qu\u1ea3n l\u00fd s\u1ea3n xu\u1ea5t nh\u00ecn nh\u1eadn th\u1ebf gi\u1edbi l\u00e0 c\u00e1c b\u00e0n hi\u1ec7u chu\u1ea9n nhi\u1ec7t \u0111\u01b0\u1ee3c xem nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t. Chi ph\u00ed c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh nh\u01b0 chi ph\u00ed ph\u01b0\u01a1ng ti\u1ec7n s\u1ea3n xu\u1ea5t, v\u00e0 vi\u1ec7c b\u1ea3o tr\u00ec c\u0169ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t. Tuy nhi\u00ean, th\u1ef1c t\u1ebf, ch\u00fang thu\u1ed9c v\u00e0o lo\u1ea1i <strong>\u0111o l\u01b0\u1eddng v\u00e0 thi\u1ebft b\u1ecb \u0111o<\/strong>, b\u1edfi v\u00ec, kh\u00f4ng gi\u1ed1ng nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t t\u1ea1o ra s\u1ea3n ph\u1ea9m v\u1eadt l\u00fd, b\u00e0n hi\u1ec7u chu\u1ea9n nhi\u1ec7t ch\u1ec9 t\u1ea1o ra m\u1ed9t con s\u1ed1, do \u0111\u00f3 cung c\u1ea5p m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>Do \u0111\u00f3, c\u00e1c y\u00eau c\u1ea7u t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111o ki\u1ec3m tra \u00e1p d\u1ee5ng cho c\u00e1c b\u00e0n hi\u1ec7u chu\u1ea9n 500 A, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1eadn d\u1ea1ng, \u0111\u00e1nh d\u1ea5u tr\u1ea1ng th\u00e1i hi\u1ec7u chu\u1ea9n, kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh, d\u1eef li\u1ec7u khi t\u00ecm th\u1ea5y v\u00e0 khi r\u1eddi \u0111i, vi ph\u1ea1m dung sai v\u00e0 ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng. H\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/blog\/what-is-an-mcb-testing-laboratory\/\">nh\u1eefng g\u00ec m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m tra MCB th\u1ef1c s\u1ef1 ch\u1ee9a \u0111\u1ef1ng<\/a> \u0111i qua c\u00e1ch nh\u1eefng y\u00eau c\u1ea7u n\u00e0y \u0111\u1ecbnh h\u00ecnh b\u1ed1 c\u1ee5c v\u1eadt l\u00fd c\u1ee7a khu v\u1ef1c th\u1eed nghi\u1ec7m.<\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t v\u00e0 thi\u1ebft b\u1ecb \u0111o c\u0169ng r\u1ea5t quan tr\u1ecdng \u1edf \u0111\u00e2y. Thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t ch\u1ec9 \u0111\u01a1n gi\u1ea3n ki\u1ec3m tra xem c\u00e1c k\u1ebft qu\u1ea3 \u0111o c\u00f3 n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ed1 \u0111\u1ecbnh hay kh\u00f4ng, trong khi b\u00e0n hi\u1ec7u chu\u1ea9n \u0111o m\u1ed9t s\u1ed1 tham s\u1ed1, do \u0111\u00f3 cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng tr\u00e1ch nhi\u1ec7m li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c cung c\u1ea5p. H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/blog\/mccb-calibration-machine-tips-for-optimal-performance\/\">l\u1ef1a ch\u1ecdn m\u00e1y hi\u1ec7u chu\u1ea9n MCCB<\/a> bao g\u1ed3m v\u1ecb tr\u00ed ranh gi\u1edbi \u0111\u00f3 trong th\u1ef1c t\u1ebf.<\/p>\n<h2>Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111o l\u01b0\u1eddng: Chu\u1ed7i \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch<\/h2>\n<p><strong>Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111o l\u01b0\u1eddng<\/strong> l\u00e0 thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 th\u1ef1c t\u1ebf r\u1eb1ng m\u1ed9t ph\u00e9p \u0111o nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn m\u1ed9t chu\u1ea9n tham chi\u1ebfu ch\u00ednh th\u00f4ng qua m\u1ed9t chu\u1ed7i hi\u1ec7u chu\u1ea9n li\u00ean t\u1ee5c (m\u1ed7i m\u1eaft x\u00edch c\u1ee7a chu\u1ed7i \u0111\u1ea3m b\u1ea3o m\u1ed9t \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn \u0111o nh\u1ea5t \u0111\u1ecbnh).<br \/>\nTrong tr\u01b0\u1eddng h\u1ee3p nh\u00e0 s\u1ea3n xu\u1ea5t c\u1ea7u dao, chu\u1ed7i n\u00e0y s\u1ebd bao g\u1ed3m b\u1ed1n m\u1eaft x\u00edch.<\/p>\n<ol>\n<li>\u2460. m\u1eaft x\u00edch: \u0110\u1ecbnh ngh\u0129a SI. \u0110\u1ecbnh ngh\u0129a ampe v\u00e0 gi\u00e2y d\u1ef1a tr\u00ean c\u00e1c h\u1eb1ng s\u1ed1 v\u1eadt l\u00fd v\u00e0 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c vi\u1ec7n \u0111o l\u01b0\u1eddng qu\u1ed1c gia.\n<p>\u2461. m\u1eaft x\u00edch l\u00e0 m\u1ed9t t\u1ed5 ch\u1ee9c \u0111o l\u01b0\u1eddng qu\u1ed1c gia. NIST (M\u1ef9), PTB (\u0110\u1ee9c), NPL (Anh), NIM (Trung Qu\u1ed1c). C\u00e1c t\u1ed5 ch\u1ee9c n\u00e0y duy tr\u00ec c\u00e1c chu\u1ea9n ch\u00ednh v\u00e0 th\u1ef1c hi\u1ec7n hi\u1ec7u chu\u1ea9n c\u00e1c chu\u1ea9n l\u00e0m vi\u1ec7c c\u1ee7a c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn.<\/p>\n<p>\u2462. m\u1eaft x\u00edch l\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m hi\u1ec7u chu\u1ea9n b\u00ean th\u1ee9 ba \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn \u0111\u00e3 \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO\/IEC 17025, gi\u1eef c\u00e1c chu\u1ea9n tham chi\u1ebfu \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n so v\u1edbi vi\u1ec7n qu\u1ed1c gia, v\u00e0 cung c\u1ea5p c\u00e1c ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef b\u1edfi nh\u00e0 m\u00e1y.<\/p>\n<p>\u2463. m\u1eaft x\u00edch l\u00e0 b\u00e0n th\u1eed nghi\u1ec7m (\u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n t\u1ea1i ch\u1ed7 ho\u1eb7c g\u1eedi \u0111i hi\u1ec7u chu\u1ea9n) d\u1ef1a tr\u00ean c\u00e1c chu\u1ea9n tham chi\u1ebfu \u0111\u00f3 v\u00e0 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo c\u00e1c kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<\/ol>\n<p>Lo\u1ea1i b\u1ecf b\u1ea5t k\u1ef3 li\u00ean k\u1ebft n\u00e0o trong chu\u1ed7i n\u00e0y v\u00e0 chu\u1ed7i s\u1ebd tr\u1edf n\u00ean v\u00f4 gi\u00e1 tr\u1ecb. Gi\u1ea5y ch\u1ee9ng nh\u1eadn hi\u1ec7u chu\u1ea9n t\u1eeb m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 ch\u1ee9ng nh\u1eadn n\u00e0o ho\u1eb7c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn cho c\u00e1c tham s\u1ed1 kh\u00e1c kh\u00f4ng th\u1ec3 l\u00e0m b\u1eb1ng ch\u1ee9ng v\u1ec1 kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/p>\n<h3>Ph\u1ea1m vi ch\u1ee9ng nh\u1eadn l\u00e0 \u0111i\u1ec1u m\u00e0 ng\u01b0\u1eddi mua th\u01b0\u1eddng b\u1ecf qua qu\u00e1 nhi\u1ec1u.<\/h3>\n<p>Ch\u1ee9ng nh\u1eadn ho\u1ea1t \u0111\u1ed9ng theo tham s\u1ed1 \u0111o v\u00e0 ph\u1ea1m vi, kh\u00f4ng ph\u1ea3i theo ph\u00f2ng th\u00ed nghi\u1ec7m\/c\u00f4ng ty. M\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn cho d\u00f2ng \u0111i\u1ec7n DC \u0111\u1ebfn gi\u00e1 tr\u1ecb 100 A kh\u00f4ng th\u1ec3 ch\u1ee9ng nh\u1eadn ngu\u1ed3n d\u00f2ng \u0111i\u1ec7n AC 2000 A ngay c\u1ea3 khi ph\u00f2ng th\u00ed nghi\u1ec7m s\u1eb5n s\u00e0ng cung c\u1ea5p cho b\u1ea1n gi\u1ea5y ch\u1ee9ng nh\u1eadn.<\/p>\n<h2>\u0110\u1ecdc B\u00e1o c\u00e1o Hi\u1ec7u chu\u1ea9n B\u00ean th\u1ee9 Ba<\/h2>\n<p>M\u1ed9t b\u00e1o c\u00e1o hi\u1ec7u chu\u1ea9n tu\u00e2n th\u1ee7 ch\u1ee9a m\u1ed9t b\u1ed9 c\u00e1c y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. Bi\u1ebft nh\u1eefng g\u00ec n\u00ean c\u00f3 \u1edf \u0111\u00f3 gi\u00fap d\u1ec5 d\u00e0ng nh\u1eadn ra nh\u1eefng g\u00ec c\u00f2n thi\u1ebfu.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Y\u1ebfu t\u1ed1<\/td>\n<td>Nh\u1eefng g\u00ec n\u00f3 n\u00ean n\u00f3i<\/td>\n<td>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i quan tr\u1ecdng<\/td>\n<\/tr>\n<tr>\n<td>Nh\u1eadn d\u1ea1ng ph\u00f2ng th\u00ed nghi\u1ec7m<\/td>\n<td>T\u00ean, \u0111\u1ecba ch\u1ec9, c\u01a1 quan ch\u1ee9ng nh\u1eadn, s\u1ed1 ch\u1ee9ng nh\u1eadn<\/td>\n<td>Cho ph\u00e9p ki\u1ec3m to\u00e1n vi\u00ean x\u00e1c minh ch\u1ee9ng nh\u1eadn m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp<\/td>\n<\/tr>\n<tr>\n<td>Nh\u1eadn d\u1ea1ng thi\u1ebft b\u1ecb<\/td>\n<td>M\u00f4 t\u1ea3 thi\u1ebft b\u1ecb, nh\u00e0 s\u1ea3n xu\u1ea5t, m\u1eabu m\u00e3, s\u1ed1 s\u00ea-ri ho\u1eb7c s\u1ed1 t\u00e0i s\u1ea3n duy nh\u1ea5t<\/td>\n<td>Li\u00ean k\u1ebft gi\u1ea5y ch\u1ee9ng nh\u1eadn v\u1edbi m\u1ed9t m\u00e1y v\u1eadt l\u00fd c\u1ee5 th\u1ec3, kh\u00f4ng ph\u1ea3i lo\u1ea1i m\u00e1y<\/td>\n<\/tr>\n<tr>\n<td>Ng\u00e0y hi\u1ec7u chu\u1ea9n<\/td>\n<td>Ng\u00e0y th\u1ef1c t\u1ebf ti\u1ebfn h\u00e0nh \u0111o l\u01b0\u1eddng<\/td>\n<td>\u0110i\u1ec3m b\u1eaft \u0111\u1ea7u cho kho\u1ea3ng th\u1eddi gian hi\u1ec7u chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/td>\n<td>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i trong qu\u00e1 tr\u00ecnh hi\u1ec7u chu\u1ea9n<\/td>\n<td>K\u1ebft qu\u1ea3 ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng t\u1ef1<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n tham chi\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/td>\n<td>Nh\u1eadn d\u1ea1ng v\u00e0 tr\u1ea1ng th\u00e1i hi\u1ec7u chu\u1ea9n c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n ri\u00eang c\u1ee7a ph\u00f2ng th\u00ed nghi\u1ec7m<\/td>\n<td>Ch\u1ee9ng minh li\u00ean k\u1ebft th\u01b0\u1ee3ng ngu\u1ed3n trong chu\u1ed7i truy xu\u1ea5t ngu\u1ed3n g\u1ed1c<\/td>\n<\/tr>\n<tr>\n<td>D\u1eef li\u1ec7u tr\u01b0\u1edbc hi\u1ec7u ch\u1ec9nh<\/td>\n<td>\u0110\u1ecdc s\u1ed1 tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 \u0111i\u1ec1u ch\u1ec9nh n\u00e0o<\/td>\n<td>D\u1eef li\u1ec7u duy nh\u1ea5t cho bi\u1ebft li\u1ec7u s\u1ea3n xu\u1ea5t tr\u01b0\u1edbc \u0111\u00f3 c\u00f3 h\u1ee3p l\u1ec7 hay kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>D\u1eef li\u1ec7u sau hi\u1ec7u ch\u1ec9nh<\/td>\n<td>\u0110\u1ecdc s\u1ed1 sau khi \u0111i\u1ec1u ch\u1ec9nh<\/td>\n<td>Thi\u1ebft l\u1eadp \u0111i\u1ec1u ki\u1ec7n b\u1eaft \u0111\u1ea7u cho kho\u1ea3ng th\u1eddi gian ti\u1ebfp theo<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 kh\u00f4ng ch\u1eafc \u0111o l\u01b0\u1eddng<\/td>\n<td>\u0110\u1ed9 kh\u00f4ng ch\u1eafc m\u1edf r\u1ed9ng v\u1edbi h\u1ec7 s\u1ed1 bao ph\u1ee7 v\u00e0 x\u00e1c su\u1ea5t bao ph\u1ee7<\/td>\n<td>N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, c\u00e1c con s\u1ed1 kh\u00f4ng c\u00f3 \u0111\u1ed9 tin c\u1eady x\u00e1c \u0111\u1ecbnh<\/td>\n<\/tr>\n<tr>\n<td>Quy t\u1eafc quy\u1ebft \u0111\u1ecbnh<\/td>\n<td>C\u00e1ch x\u1eed l\u00fd \u0111\u1ed9 kh\u00f4ng ch\u1eafc trong b\u1ea5t k\u1ef3 tuy\u00ean b\u1ed1 \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t n\u00e0o<\/td>\n<td>Y\u00eau c\u1ea7u khi gi\u1ea5y ch\u1ee9ng nh\u1eadn n\u00eau r\u00f5 s\u1ef1 ph\u00f9 h\u1ee3p<\/td>\n<\/tr>\n<tr>\n<td>\u1ee6y quy\u1ec1n<\/td>\n<td>Ng\u01b0\u1eddi k\u00fd t\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c \u1ee7y quy\u1ec1n \u0111i\u1ec7n t\u1eed t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/td>\n<td>Thi\u1ebft l\u1eadp tr\u00e1ch nhi\u1ec7m cho b\u00e1o c\u00e1o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>D\u1eef li\u1ec7u tr\u01b0\u1edbc hi\u1ec7u ch\u1ec9nh l\u00e0 th\u00f4ng tin m\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng b\u1ecf qua<\/h3>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi mua ch\u1ec9 \u0111\u01a1n gi\u1ea3n y\u00eau c\u1ea7u m\u1ed9t gi\u1ea5y t\u1edd cho bi\u1ebft m\u00e1y \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n. N\u1ebfu ph\u00f2ng th\u00ed nghi\u1ec7m hi\u1ec7u chu\u1ea9n thi\u1ebft b\u1ecb tr\u01b0\u1edbc v\u00e0 ch\u1ec9 sau \u0111\u00f3 s\u1eed d\u1ee5ng n\u00f3, gi\u1ea5y t\u1edd s\u1ebd n\u00f3i r\u1eb1ng thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u1ea1t, tuy nhi\u00ean, n\u00f3 kh\u00f4ng n\u00f3i g\u00ec v\u1ec1 th\u00e1ng s\u1ea3n xu\u1ea5t tr\u01b0\u1edbc \u0111\u00f3. Lu\u00f4n ghi d\u1eef li\u1ec7u tr\u01b0\u1edbc v\u00e0 sau hi\u1ec7u ch\u1ec9nh theo th\u1ee9 t\u1ef1 cho d\u1ecbch v\u1ee5 hi\u1ec7u chu\u1ea9n. \u0110i\u1ec1u n\u00e0y kh\u00f4ng t\u1ed1n th\u00eam chi ph\u00ed v\u00e0 l\u00e0 s\u1ef1 b\u1ea3o v\u1ec7 duy nh\u1ea5t ch\u1ed1ng l\u1ea1i s\u1ef1 tr\u00f4i d\u1ea1t \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n sau n\u00e0y.<\/p>\n<h3>\u0110o l\u01b0\u1eddng \u0111\u1ed9 kh\u00f4ng ch\u1eafc kh\u00f4ng gi\u1ed1ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n<p><strong>\u0110\u1ed9 kh\u00f4ng ch\u1eafc \u0111o l\u01b0\u1eddng<\/strong> \u0111\u1ecbnh l\u01b0\u1ee3ng x\u00e1c \u0111\u1ecbnh s\u1ef1 nghi ng\u1edd li\u00ean quan \u0111\u1ebfn k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ea1t d\u01b0\u1edbi d\u1ea1ng \u0111\u1ed9 kh\u00f4ng ch\u1eafc m\u1edf r\u1ed9ng v\u1edbi k = 2, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 95 ph\u1ea7n tr\u0103m \u0111\u1ed9 tin c\u1eady. N\u1ebfu ch\u00fang ta c\u00f3 ph\u00e9p \u0111o 135,0 A v\u1edbi \u0111\u1ed9 kh\u00f4ng ch\u1eafc m\u1edf r\u1ed9ng 0,4 A t\u1ea1i k = 2, ch\u00fang ta c\u00f3 th\u1ec3 n\u00f3i r\u1eb1ng gi\u00e1 tr\u1ecb th\u1ef1c r\u1ea5t c\u00f3 th\u1ec3 n\u1eb1m gi\u1eefa 134,6 A v\u00e0 135,4 A. Tuy nhi\u00ean, \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a c\u00f4ng ty v\u1ec1 m\u1ee9c \u0111\u1ed9 g\u1ea7n \u0111\u00fang c\u1ee7a gi\u00e1 tr\u1ecb thu \u0111\u01b0\u1ee3c. M\u1ed9t l\u00e0 gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c v\u00e0 c\u00e1i c\u00f2n l\u1ea1i l\u00e0 tuy\u00ean b\u1ed1. K\u1ebft qu\u1ea3 ki\u1ec3m to\u00e1n th\u01b0\u1eddng ph\u00e1t sinh t\u1eeb vi\u1ec7c l\u1ea5y c\u00e1i sau l\u00e0m c\u00e1i \u0111\u1ea7u ti\u00ean.<\/p>\n<h2>T\u1ef7 l\u1ec7 \u0110\u1ed9 kh\u00f4ng ch\u1eafc c\u1ee7a Ki\u1ec3m tra: T\u1ea1i sao Tham chi\u1ebfu c\u1ee7a B\u1ea1n Ph\u1ea3i T\u1ed1t H\u01a1n B\u00e0n Th\u00ed nghi\u1ec7m c\u1ee7a B\u1ea1n<\/h2>\n<p>Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n trong \u0111o l\u01b0\u1eddng c\u00f4ng nghi\u1ec7p l\u00e0 t\u1ef7 l\u1ec7 \u0111\u1ed9 kh\u00f4ng ch\u1eafc c\u1ee7a ki\u1ec3m tra n\u00ean l\u00e0 4:1 ho\u1eb7c l\u1edbn h\u01a1n, c\u00f3 ngh\u0129a l\u00e0 ti\u00eau chu\u1ea9n tham chi\u1ebfu n\u00ean ch\u00ednh x\u00e1c g\u1ea5p b\u1ed1n l\u1ea7n so v\u1edbi thi\u1ebft b\u1ecb hi\u1ec7u chu\u1ea9n. Nhi\u1ec1u h\u1ec7 th\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng \u01b0u ti\u00ean t\u1ef7 l\u1ec7 10:1 n\u1ebfu kh\u1ea3 thi v\u1ec1 m\u1eb7t kinh t\u1ebf.<\/p>\n<p>\u00c1p d\u1ee5ng cho ki\u1ec3m tra b\u1ed9 ng\u1eaft m\u1ea1ch, ph\u00e9p t\u00ednh l\u00e0 c\u1ee5 th\u1ec3. Benlong\u2019s <a href=\"https:\/\/benlongkj.com\/vi\/mcb-automatic-testing-line-product\/\">D\u00e2y chuy\u1ec1n ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng MCB<\/a> x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 ch\u00ednh x\u00e1c d\u00f2ng \u0111i\u1ec7n l\u00e0 c\u1ed9ng ho\u1eb7c tr\u1eeb 0,5 ph\u1ea7n tr\u0103m c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ecdc v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1eddi gian l\u00e0 c\u1ed9ng ho\u1eb7c tr\u1eeb 1 ms cho ng\u1eaft t\u1ee9c th\u1eddi. \u0110\u1ec3 hi\u1ec7u chu\u1ea9n k\u00eanh d\u00f2ng \u0111i\u1ec7n \u0111\u00f3 v\u1edbi t\u1ef7 l\u1ec7 4:1, b\u1ea1n c\u1ea7n m\u1ed9t ampe k\u1ebf tham chi\u1ebfu ch\u00ednh x\u00e1c h\u01a1n c\u1ed9ng ho\u1eb7c tr\u1eeb 0,125 ph\u1ea7n tr\u0103m tr\u00ean to\u00e0n d\u1ea3i l\u00e0m vi\u1ec7c. \u0110\u1ec3 hi\u1ec7u chu\u1ea9n k\u00eanh th\u1eddi gian \u0111\u00f3, b\u1ea1n c\u1ea7n m\u1ed9t tham chi\u1ebfu th\u1eddi gian ch\u00ednh x\u00e1c h\u01a1n c\u1ed9ng ho\u1eb7c tr\u1eeb 0,25 ms.<\/p>\n<p>C\u00f9ng logic \u0111\u00f3 \u00e1p d\u1ee5ng cho c\u00f4ng vi\u1ec7c \u0111o \u0111i\u1ec7n n\u0103ng, n\u01a1i t\u1ef7 l\u1ec7 \u0111\u01b0\u1ee3c vi\u1ebft tr\u1ef1c ti\u1ebfp v\u00e0o th\u1ef1c ti\u1ec5n: m\u1ed9t \u0111\u1ed3ng h\u1ed3 \u0111o l\u1edbp 0.2 \u0111\u01b0\u1ee3c x\u00e1c minh so v\u1edbi ti\u00eau chu\u1ea9n tham chi\u1ebfu l\u1edbp 0.05, t\u1ef7 l\u1ec7 b\u1ed1n tr\u00ean m\u1ed9t. Ph\u00e2n t\u00edch chi ti\u1ebft trong h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/news\/electric-meter-test\/\">thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ed3ng h\u1ed3 \u0111i\u1ec7n v\u00e0 x\u00e1c minh \u0111\u1ed9 ch\u00ednh x\u00e1c<\/a> cho th\u1ea5y c\u00e1ch y\u00eau c\u1ea7u \u0111\u00f3 \u0111i\u1ec1u khi\u1ec3n to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac b\u00e0n th\u00ed nghi\u1ec7m.<\/p>\n<p><span style=\"color: #991b1b;\">N\u1ebfu nh\u00e0 cung c\u1ea5p b\u00e1o gi\u00e1 cho b\u1ea1n m\u1ed9t b\u00e0n th\u00ed nghi\u1ec7m v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c ch\u1eb7t ch\u1ebd h\u01a1n b\u1ea5t k\u1ef3 ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn n\u00e0o trong khu v\u1ef1c c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec7u chu\u1ea9n, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u00f3 ch\u1ec9 mang t\u00ednh trang tr\u00ed. H\u00e3y x\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng hi\u1ec7u chu\u1ea9n tr\u01b0\u1edbc khi b\u1ea1n k\u00fd h\u1ee3p \u0111\u1ed3ng.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1769\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/09\/MCB-Long-Time-Thermal-Calibration-Test-Report.webp\" alt=\"\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Nh\u1eefng Tham S\u1ed1 N\u00e0o C\u1ea7n Hi\u1ec7u Chu\u1ea9n, v\u00e0 Bao L\u00e2u M\u1ed9t L\u1ea7n<\/h2>\n<p>Kh\u00f4ng ph\u1ea3i k\u00eanh n\u00e0o tr\u00ean b\u00e0n th\u00ed nghi\u1ec7m c\u0169ng mang c\u00f9ng m\u1ee9c r\u1ee7i ro, v\u00e0 ng\u00e2n s\u00e1ch hi\u1ec7u chu\u1ea9n l\u00e0 c\u00f3 h\u1ea1n. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y ph\u1ea3n \u00e1nh th\u1ef1c ti\u1ec5n c\u00f4ng nghi\u1ec7p ph\u1ed5 bi\u1ebfn cho thi\u1ebft b\u1ecb ki\u1ec3m tra b\u1ed9 ng\u1eaft \u0111i\u1ec7n \u00e1p th\u1ea5p.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Tham s\u1ed1<\/td>\n<td>Thi\u1ebft b\u1ecb \u0111i\u1ec3n h\u00ecnh<\/td>\n<td>Kho\u1ea3ng th\u1eddi gian ph\u1ed5 bi\u1ebfn<\/td>\n<td>R\u1ee7i ro n\u1ebfu kh\u00f4ng hi\u1ec7u chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng ki\u1ec3m tra, ph\u1ea1m vi th\u1ea5p<\/td>\n<td>\u0110i\u1ec7n tr\u1edf ch\u00ednh x\u00e1c ho\u1eb7c CT c\u1ed9ng v\u1edbi \u0111\u1ed3ng h\u1ed3 hi\u1ec7u chu\u1ea9n<\/td>\n<td>12 th\u00e1ng<\/td>\n<td>Th\u1eddi gian ng\u1eaft nhi\u1ec7t thay \u0111\u1ed5i c\u00f3 h\u1ec7 th\u1ed1ng; c\u1ea3 l\u00f4 b\u1ecb hi\u1ec7u chu\u1ea9n sai<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng ki\u1ec3m tra, ph\u1ea1m vi cao<\/td>\n<td>\u0110i\u1ec7n tr\u1edf d\u00f2ng cao ho\u1eb7c cu\u1ed9n Rogowski<\/td>\n<td>12 th\u00e1ng<\/td>\n<td>Ng\u1eaft t\u1eeb \u0111\u01b0\u1ee3c x\u00e1c minh sai \u1edf b\u1ed9i s\u1ed1 d\u00f2ng \u0111\u1ecbnh m\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 h\u1eb9n gi\u1edd ng\u1eaft, nhi\u1ec7t<\/td>\n<td>B\u1ed9 h\u1eb9n gi\u1edd k\u1ef9 thu\u1eadt s\u1ed1, tham chi\u1ebfu tinh th\u1ec3<\/td>\n<td>12 \u0111\u1ebfn 24 th\u00e1ng<\/td>\n<td>C\u1eeda s\u1ed5 ng\u1eaft \u00e1p d\u1ee5ng sai; cho ph\u00e9p b\u1ed9 ng\u1eaft ch\u1eadm v\u01b0\u1ee3t qua sai<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 h\u1eb9n gi\u1edd ng\u1eaft, t\u1ee9c th\u1eddi<\/td>\n<td>B\u1ed9 h\u1eb9n gi\u1edd \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao, l\u1edbp mili gi\u00e2y<\/td>\n<td>12 th\u00e1ng<\/td>\n<td>Ph\u1ea3n \u1ee9ng ng\u1eafn m\u1ea1ch \u0111\u01b0\u1ee3c khai b\u00e1o sai tr\u00ean b\u1ea3ng d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng h\u1ed3 micro-ohm<\/td>\n<td>C\u1ea7u Kelvin b\u1ed1n d\u00e2y<\/td>\n<td>12 th\u00e1ng<\/td>\n<td>M\u1ed1i h\u00e0n k\u00e9m v\u00e0 ti\u1ebfp \u0111i\u1ec3m b\u1ecb \u00f4 nhi\u1ec5m v\u1eabn qua ki\u1ec3m tra<\/td>\n<\/tr>\n<tr>\n<td>M\u00e1y ki\u1ec3m tra \u0111i\u1ec7n m\u00f4i<\/td>\n<td>Ngu\u1ed3n \u0111i\u1ec7n \u00e1p cao v\u00e0 \u0111\u1ed3ng h\u1ed3 r\u00f2 r\u1ec9<\/td>\n<td>12 th\u00e1ng<\/td>\n<td>Khi\u1ebfm khuy\u1ebft c\u00e1ch \u0111i\u1ec7n tho\u00e1t l\u1ecdt; ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi an to\u00e0n<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/td>\n<td>C\u1eb7p nhi\u1ec7t \u0111i\u1ec7n ho\u1eb7c RTD v\u1edbi b\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u<\/td>\n<td>12 \u0111\u1ebfn 24 th\u00e1ng<\/td>\n<td>B\u00f9 nhi\u1ec7t \u00e1p d\u1ee5ng hi\u1ec7u ch\u1ec9nh sai<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n tham chi\u1ebfu \u0111\u01b0\u1ee3c gi\u1eef trong nh\u00e0<\/td>\n<td>Ti\u00eau chu\u1ea9n l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra b\u00e0n th\u1eed<\/td>\n<td>12 th\u00e1ng, ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn<\/td>\n<td>M\u1ecdi ki\u1ec3m tra n\u1ed9i b\u1ed9 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n k\u1ec3 t\u1eeb l\u1ea7n hi\u1ec7u chu\u1ea9n cu\u1ed1i c\u00f9ng \u0111\u1ec1u kh\u00f4ng c\u00f2n gi\u00e1 tr\u1ecb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Th\u1eddi gian ti\u00eau chu\u1ea9n l\u00e0 m\u01b0\u1eddi hai th\u00e1ng, nh\u01b0ng vi\u1ec7c x\u00e1c \u0111\u1ecbnh kho\u1ea3ng th\u1eddi gian n\u00e0y n\u00ean l\u00e0 m\u1ed9t \u0111\u00e1nh gi\u00e1 th\u1eadn tr\u1ecdng thay v\u00ec m\u1ed9t th\u00f3i quen \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp. Th\u1eddi h\u1ea1n n\u00e0y n\u00ean \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn n\u1ebfu thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u00edch c\u1ef1c, n\u1ebfu l\u1ecbch s\u1eed c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u01b0\u1edbc \u0111\u00f3 cho th\u1ea5y thi\u1ebft b\u1ecb g\u1ea7n \u0111\u1ea1t gi\u1edbi h\u1ea1n sai s\u1ed1 cho ph\u00e9p, n\u1ebfu thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c di chuy\u1ec3n ho\u1eb7c s\u1eeda ch\u1eefa, ho\u1eb7c theo y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng ho\u1eb7c t\u1ed5 ch\u1ee9c th\u1ef1c hi\u1ec7n ch\u1ee9ng nh\u1eadn. Vi\u1ec7c gia h\u1ea1n th\u1eddi gian m\u00e0 kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u tr\u00f4i t\u00e0i li\u1ec7u l\u00e0 kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n<h2>Khi v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n dung sai<\/h2>\n<p>Khi ph\u00e1t hi\u1ec7n b\u00e0n th\u1eed \u0111\u00e3 t\u1ea1o ra c\u00e1c k\u1ebft qu\u1ea3 \u201cv\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n dung sai\u201d, \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00e0i li\u1ec7u m\u00e0 l\u00e0 l\u1ed7i trong s\u1ea3n xu\u1ea5t, v\u00ec m\u1ed7i \u0111\u01a1n v\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb gi\u1edd \u0111\u00e2y \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn l\u00e0 \u0111\u00e3 t\u1ea1o ra c\u00e1c k\u1ebft qu\u1ea3 sai l\u1ec7ch.<\/p>\n<p>Ph\u1ea3n \u1ee9ng c\u1ea7n th\u1ef1c hi\u1ec7n l\u00e0 ph\u1ea3i ti\u1ebfn h\u00e0nh c\u00e1c b\u01b0\u1edbc sau theo truy xu\u1ea5t ng\u01b0\u1ee3c:<\/p>\n<p>X\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u00e0 h\u01b0\u1edbng c\u1ee7a sai s\u1ed1 cho \u201cd\u1eef li\u1ec7u ph\u00e1t hi\u1ec7n ban \u0111\u1ea7u.\u201d<br \/>\nX\u00e1c \u0111\u1ecbnh c\u00e1c l\u00f4 kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t cho k\u00eanh \u0111\u00f3 k\u1ec3 t\u1eeb l\u1ea7n hi\u1ec7u chu\u1ea9n tr\u01b0\u1edbc, s\u1eed d\u1ee5ng nh\u1eadt k\u00fd.<br \/>\nT\u00ednh to\u00e1n l\u1ea1i xem k\u1ebft qu\u1ea3 c\u00f3 \u0111\u1ea1t y\u00eau c\u1ea7u sau khi \u0111i\u1ec1u ch\u1ec9nh sai s\u1ed1 hay kh\u00f4ng.<br \/>\nB\u01b0\u1edbc ti\u1ebfp theo l\u00e0 ban h\u00e0nh c\u00e1c h\u00e0nh \u0111\u1ed9ng ki\u1ec3m so\u00e1t cho nh\u1eefng l\u00f4 c\u00f3 k\u1ebft qu\u1ea3 kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u sau khi \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh k\u1ebft qu\u1ea3.<br \/>\nGhi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c ph\u00e9p t\u00ednh v\u00e0 quy\u1ebft \u0111\u1ecbnh c\u1ee7a b\u1ea1n, b\u1ea5t k\u1ec3 k\u1ebft qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 g\u00ec.<\/p>\n<p><span style=\"color: #800000;\">\u0110i\u1ec1u n\u00e0y ch\u1ec9 kh\u1ea3 thi khi c\u00f3 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed ghi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft qu\u1ea3. N\u1ebfu b\u00e0n th\u1eed ch\u1ec9 c\u00f3 k\u1ebft qu\u1ea3 \u201c\u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t\u201d ho\u1eb7c kh\u00f4ng c\u00f3 g\u00ec c\u1ea3, th\u00ec t\u00ecnh hu\u1ed1ng \u201cv\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n dung sai\u201d s\u1ebd tr\u1edf th\u00e0nh m\u1ed9t c\u01a1n \u00e1c m\u1ed9ng.<\/span><\/p>\n<h2>\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>K\u1ebft qu\u1ea3 ki\u1ec3m tra c\u1ea7u dao b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1eb7c bi\u1ec7t b\u1edfi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng xung quanh, v\u00ec d\u1ea3i kim lo\u1ea1i k\u00e9p kh\u00f4ng ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c nhi\u1ec7t t\u1eeb d\u00f2ng \u0111i\u1ec7n th\u1eed v\u00e0 nhi\u1ec7t t\u1eeb m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p>Th\u1eddi gian ng\u1eaft c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1edbi 1-2 ph\u1ea7n tr\u0103m cho m\u1ed7i \u0111\u1ed9 C thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. Do \u0111\u00f3, n\u1ebfu gi\u1ea3 s\u1eed nhi\u1ec7t \u0111\u1ed9 bu\u1ed5i chi\u1ec1u cao h\u01a1n bu\u1ed5i s\u00e1ng 12 \u0111\u1ed9, k\u1ebft qu\u1ea3 \u0111o s\u1ebd sai ch\u1ec9 v\u00ec nhi\u1ec7t \u0111\u1ed9. C\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3m thi\u1ec3u c\u00f3 s\u1eb5n nh\u01b0ng kh\u00f4ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau:<\/p>\n<ul>\n<li>Ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng. Kh\u00f4ng gian hi\u1ec7u chu\u1ea9n ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra \u1edf nhi\u1ec7t \u0111\u1ed9 25\u00b0C\u00b13\u00b0C, \u0111\u00e2y c\u0169ng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ch\u1ee9ng nh\u1eadn.<\/li>\n<li>B\u00f9 tr\u1eeb trong ph\u1ea7n m\u1ec1m. Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t theo th\u1eddi gian th\u1ef1c v\u00e0 ho\u1eb7c d\u00f2ng \u0111i\u1ec7n th\u1eed ho\u1eb7c ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c s\u1ebd \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh t\u01b0\u01a1ng \u1ee9ng. <a href=\"https:\/\/benlongkj.com\/vi\/mccb-long-time-thermal-calibration-bench-product\/\">B\u00e0n hi\u1ec7u chu\u1ea9n nhi\u1ec7t l\u00e2u d\u00e0i MCCB<\/a> Ghi l\u1ea1i th\u1eddi gian ng\u1eaft, d\u00f2ng \u0111i\u1ec7n th\u1eed, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 tr\u1ea1ng th\u00e1i \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t cho t\u1eebng tr\u1ea1m ch\u00ednh v\u00ec l\u00fd do n\u00e0y, v\u00e0 h\u1ed7 tr\u1ee3 bu\u1ed3ng m\u00f4i tr\u01b0\u1eddng t\u00f9y ch\u1ecdn khi y\u00eau c\u1ea7u \u0111\u1ed9 l\u1eb7p l\u1ea1i \u0111\u1ea1t chu\u1ea9n ph\u00f2ng th\u00ed nghi\u1ec7m.<\/li>\n<\/ul>\n<p>B\u1ea5t k\u1ec3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, b\u1ea1n s\u1ebd c\u1ea7n c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong qu\u00e1 tr\u00ecnh \u0111o l\u01b0\u1eddng v\u00e0 do \u0111\u00f3 th\u1ef1c hi\u1ec7n hi\u1ec7u chu\u1ea9n gi\u1ed1ng nh\u01b0 c\u00e1c k\u00eanh d\u00f2ng \u0111i\u1ec7n c\u0169ng nh\u01b0 th\u1eddi gian. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c s\u01a1 \u0111\u1ed3 b\u00f9 d\u1ef1a tr\u00ean nhi\u1ec7t \u0111i\u1ec7n tr\u1edf ch\u01b0a hi\u1ec7u chu\u1ea9n ch\u1ec9 t\u1ea1o ra nhi\u1ec1u sai s\u1ed1 h\u01a1n v\u00e0 kh\u00f4ng lo\u1ea1i b\u1ecf \u0111\u01b0\u1ee3c ch\u00fang.<\/p>\n<h2>L\u00e0m m\u00e1t, tu\u1ea7n t\u1ef1 v\u00e0 t\u00ednh l\u1eb7p l\u1ea1i<\/h2>\n<p>C\u00f3 hai hi\u1ec7u \u1ee9ng b\u1ed5 sung l\u00e0m m\u00e9o c\u00e1c ph\u00e9p \u0111o c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch kh\u00e1c v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ee7a thi\u1ebft b\u1ecb \u0111o.<\/p>\n<p>Hi\u1ec7u \u1ee9ng \u0111\u1ea7u ti\u00ean l\u00e0 nhi\u1ec7t d\u01b0 xu\u1ea5t hi\u1ec7n trong bimetal trong kho\u1ea3nh kh\u1eafc ng\u1eaft m\u1ea1ch v\u00e0 l\u00e0m cho b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c ki\u1ec3m tra nhi\u1ec7t th\u1ee9 hai ng\u1eaft nhanh h\u01a1n. Hi\u1ec7u \u1ee9ng n\u00e0y c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ch\u1edd t\u1eeb ba \u0111\u1ebfn b\u1ed1n ph\u00fat sau l\u1ea7n ki\u1ec3m tra \u0111\u1ea7u ti\u00ean ho\u1eb7c l\u00e0m m\u00e1t c\u01b0\u1ee1ng b\u1ee9c gi\u1eefa c\u00e1c l\u1ea7n ki\u1ec3m tra.<br \/>\nHi\u1ec7u \u1ee9ng th\u1ee9 hai l\u00e0 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ea7u cu\u1ed1i. N\u1ebfu c\u00e1c \u0111\u1ea7u cu\u1ed1i b\u1ecb oxy h\u00f3a ho\u1eb7c b\u1ea9n, n\u00f3 t\u1ea1o ra \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac v\u00e0 \u0111i\u1ec7n \u00e1p gi\u1ea3m t\u1ea1i c\u00e1c \u0111\u1ea7u cu\u1ed1i c\u1ee7a thi\u1ebft b\u1ecb. Vi\u1ec7c l\u00e0m s\u1ea1ch c\u00e1c \u0111\u1ea7u cu\u1ed1i tr\u01b0\u1edbc khi ki\u1ec3m tra kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 l\u00e0m s\u1ea1ch; n\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh \u0111o l\u01b0\u1eddng.<\/p>\n<p>T\u00ednh l\u1eb7p l\u1ea1i ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh thay v\u00ec gi\u1ea3 \u0111\u1ecbnh. \u0110\u1ed1i v\u1edbi m\u1ee5c \u0111\u00edch ki\u1ec3m tra, k\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ch\u1ea1y m\u01b0\u1eddi l\u1ea7n ki\u1ec3m tra tr\u00ean c\u00f9ng m\u1ed9t m\u00e1y v\u00e0 t\u00ednh \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a th\u1eddi gian ki\u1ec3m tra. N\u1ebfu \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a th\u1eddi gian ki\u1ec3m tra trung b\u00ecnh nh\u1ecf h\u01a1n 5 ph\u1ea7n tr\u0103m, kh\u1ea3 n\u0103ng qu\u00e1 tr\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 Cpk b\u1eb1ng 1,33.<\/p>\n<h2>\u0110o l\u01b0\u1eddng tr\u00ean d\u00e2y chuy\u1ec1n t\u1ef1 \u0111\u1ed9ng<\/h2>\n<p>T\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111ang thay \u0111\u1ed5i kinh t\u1ebf c\u1ee7a c\u00e1c ph\u00e9p \u0111o m\u1ed9t c\u00e1ch kh\u00f4ng \u0111\u01b0\u1ee3c ch\u00fa \u00fd. Trong ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng, k\u1ef9 thu\u1eadt vi\u00ean \u0111o gi\u00e1 tr\u1ecb v\u00e0 ghi l\u1ea1i, trong khi trong quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng t\u1ea5t c\u1ea3 c\u00e1c ph\u00e9p \u0111o \u0111\u01b0\u1ee3c ghi l\u1ea1i trong m\u00e1y t\u00ednh v\u00e0 li\u00ean k\u1ebft v\u1edbi s\u1ed1 s\u00ea-ri c\u1ee7a thi\u1ebft b\u1ecb \u0111o. Do \u0111\u00f3, nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 theo d\u00f5i ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang \u0111\u1eafn c\u1ee7a n\u00f3 <strong>thi\u1ebft b\u1ecb \u0111o<\/strong> li\u00ean t\u1ee5c.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y mang l\u1ea1i nh\u1eefng l\u1ee3i th\u1ebf m\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng kh\u00f4ng th\u1ec3 cung c\u1ea5p:<\/p>\n<p>Ph\u00e1t hi\u1ec7n tr\u00f4i d\u1ea1t gi\u1eefa c\u00e1c l\u1ea7n hi\u1ec7u chu\u1ea9n. Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 s\u1ef1 tr\u00f4i d\u1ea1t thi\u1ebft b\u1ecb n\u00e0o t\u1eeb l\u00e2u tr\u01b0\u1edbc khi hi\u1ec7u chu\u1ea9n h\u00e0ng n\u0103m b\u1eb1ng c\u00e1ch x\u00e2y d\u1ef1ng bi\u1ec3u \u0111\u1ed3 th\u1eddi gian ki\u1ec3m tra trung b\u00ecnh.<br \/>\nSo s\u00e1nh gi\u1eefa c\u00e1c tr\u1ea1m. Trong quy tr\u00ecnh \u0111a tr\u1ea1m, n\u1ebfu m\u1ed9t tr\u1ea1m c\u00f3 c\u00e1c k\u1ebft qu\u1ea3 \u0111o nh\u1ea5t qu\u00e1n kh\u00e1c v\u1edbi c\u00e1c tr\u1ea1m kh\u00e1c, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng c\u00f3 \u0111i\u1ec1u g\u00ec \u0111\u00f3 sai v\u1edbi tr\u1ea1m \u0111\u00f3 thay v\u00ec v\u1edbi s\u1ea3n ph\u1ea9m.<br \/>\nXu\u1ea5t d\u1eef li\u1ec7u s\u1eb5n s\u00e0ng ki\u1ec3m to\u00e1n. D\u1eef li\u1ec7u ki\u1ec3m tra c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xu\u1ea5t ra CSV, SQL ho\u1eb7c MES t\u0103ng hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh ki\u1ec3m to\u00e1n.<br \/>\nKi\u1ec3m so\u00e1t quy tr\u00ecnh th\u1ed1ng k\u00ea. Bi\u1ec3u \u0111\u1ed3 ki\u1ec3m so\u00e1t cho ph\u00e9p gi\u00e1m s\u00e1t kh\u00f4ng ch\u1ec9 k\u1ebft qu\u1ea3 ki\u1ec3m tra cu\u1ed1i c\u00f9ng m\u00e0 c\u00f2n c\u1ea3 c\u00e1c quy tr\u00ecnh th\u01b0\u1ee3ng ngu\u1ed3n trong h\u00e0n ho\u1eb7c l\u1eafp r\u00e1p.<\/p>\n<p>Ph\u00e2n t\u00edch theo t\u1eebng tr\u1ea1m trong h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/benlongkj.com\/vi\/news\/what-is-an-mcb-automatic-testing-line-a-complete-technical-guide\/\">c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a d\u00e2y chuy\u1ec1n ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng MCB<\/a> cho th\u1ea5y v\u1ecb tr\u00ed l\u1ea5y m\u1ed7i ph\u00e9p \u0111o d\u1ecdc theo d\u00f2ng ch\u1ea3y. \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ch\u01b0a s\u1eb5n s\u00e0ng cho t\u1ef1 \u0111\u1ed9ng h\u00f3a ho\u00e0n to\u00e0n, m\u1ed9t <a href=\"https:\/\/benlongkj.com\/vi\/mcb-semi-automatic-thermal-trip-calibration-bench-type-a-product\/\">b\u00e0n hi\u1ec7u chu\u1ea9n ng\u1eaft nhi\u1ec7t b\u00e1n t\u1ef1 \u0111\u1ed9ng<\/a> \u0111\u00e3 lo\u1ea1i b\u1ecf l\u1ed7i th\u1eddi gian c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, v\u1ed1n th\u01b0\u1eddng l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng ch\u1eafc ch\u1eafn l\u1edbn nh\u1ea5t tr\u00ean m\u1ed9t tr\u1ea1m th\u1ee7 c\u00f4ng.<\/p>\n<h2>X\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng \u0111o khi b\u1ea1n mua thi\u1ebft b\u1ecb<\/h2>\n<p>H\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o ra \u1edf giai \u0111o\u1ea1n \u0111\u1eb7t h\u00e0ng mua, khi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00f4 t\u1ea3 chi ti\u1ebft c\u00f4ng su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng c\u01a1 h\u1ecdc v\u00e0 coi \u0111\u1ed9 ch\u00ednh x\u00e1c nh\u01b0 m\u1ed9t m\u1ee5c \u0111\u01a1n l\u1ebb. M\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua ki\u1ec3m to\u00e1n s\u1ebd \u0111\u1ec1 c\u1eadp <strong>\u0111o l\u01b0\u1eddng v\u00e0 thi\u1ebft b\u1ecb \u0111o<\/strong> m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng.<\/p>\n<h3>C\u00e1c c\u00e2u h\u1ecfi c\u1ea7n h\u1ecfi nh\u00e0 cung c\u1ea5p tr\u01b0\u1edbc khi k\u00fd k\u1ebft th\u1ecfa thu\u1eadn<\/h3>\n<ul>\n<li>M\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho t\u1eebng k\u00eanh \u0111o ri\u00eang l\u1ebb l\u00e0 g\u00ec: n\u00f3 l\u00e0 ph\u1ea7n tr\u0103m c\u1ee7a m\u1ee9c t\u1ed1i \u0111a c\u1ee7a thang \u0111o hay ph\u1ea7n tr\u0103m c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ecdc cu\u1ed1i? S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng \u1edf c\u00e1c gi\u00e1 tr\u1ecb th\u1ea5p h\u01a1n.<br \/>\nPh\u1ea1m vi \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 bao nhi\u00eau? M\u1ed9t thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c m\u1ed9t ph\u1ea7n tr\u0103m c\u1ee7a m\u1ee9c t\u1ed1i \u0111a c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng k\u00e9m h\u01a1n nhi\u1ec1u \u1edf c\u00e1c ph\u00e9p \u0111o d\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n.<br \/>\nC\u00e1c th\u00f4ng s\u1ed1 tr\u00f4i v\u00e0 \u1ed5n \u0111\u1ecbnh trong su\u1ed1t ca l\u00e0m vi\u1ec7c l\u00e0 g\u00ec, kh\u00f4ng ph\u1ea3i ch\u1ec9 trong m\u1ed9t ph\u00e9p \u0111o?<br \/>\nC\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a thi\u1ebft b\u1ecb l\u00e0 g\u00ec v\u00e0 c\u00f3 th\u1ec3 thay th\u1ebf v\u00e0 hi\u1ec7u chu\u1ea9n ch\u00fang m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp kh\u00f4ng?<br \/>\nC\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ti\u00eau chu\u1ea9n b\u00ean th\u1ee9 ba \u0111\u1ec3 hi\u1ec7u chu\u1ea9n kh\u00f4ng, hay c\u1ea7n g\u1eedi thi\u1ebft b\u1ecb \u0111\u1ebfn n\u01a1i kh\u00e1c?<br \/>\nC\u00f3 ch\u1ee9ng ch\u1ec9 hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c c\u1ea5p sau khi mua h\u00e0ng cho th\u1ea5y c\u00e1ch c\u00e1c ph\u00e9p \u0111o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n kh\u00f4ng?<br \/>\nC\u00e1c b\u00e0i ki\u1ec3m tra FAT v\u00e0 SAT bao g\u1ed3m nh\u1eefng g\u00ec v\u00e0 c\u00f3 b\u00e0i ki\u1ec3m tra n\u00e0o ki\u1ec3m tra c\u00e1c k\u00eanh b\u1eb1ng ti\u00eau chu\u1ea9n kh\u00f4ng?<br \/>\nLo\u1ea1i \u0111\u1ea7u ra n\u00e0o \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb t\u1ea1o ra v\u00e0 c\u00f3 ghi l\u1ea1i d\u1eef li\u1ec7u n\u00e0o hay ch\u1ec9 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3?<\/p>\n<p>H\u01a1n n\u1eefa, cung c\u1ea5p b\u1ea3ng so s\u00e1nh tu\u00e2n th\u1ee7 v\u1edbi IEC 60898-1 ho\u1eb7c IEC 60947-2 cho th\u1ea5y c\u00e1c b\u00e0i ki\u1ec3m tra n\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh v\u00e0 thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. \u0110\u1ed1i v\u1edbi nh\u1eefng ai c\u00f3 th\u1ec3 cung c\u1ea5p t\u00e0i li\u1ec7u nh\u01b0 v\u1eady, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a nh\u00e0 cung c\u1ea5p \u0111\u00e3 l\u00e0m r\u1ea5t nhi\u1ec1u vi\u1ec7c.<\/li>\n<\/ul>\n<h2>Nh\u1eefng sai s\u00f3t ph\u1ed5 bi\u1ebfn trong qu\u1ea3n l\u00fd thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng<\/h2>\n<ul>\n<li>Hi\u1ec7u chu\u1ea9n b\u00e0n \u0111o trong khi \u0111\u1ec3 chu\u1ea9n tham chi\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n. M\u1ed9t chu\u1ea9n l\u00e0m vi\u1ec7c l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a quy tr\u00ecnh b\u1ea3o tr\u00ec c\u00f4ng ty v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho ki\u1ec3m so\u00e1t trung gian c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn.<br \/>\nNh\u1eadn ch\u1ee9ng ch\u1ec9 m\u00e0 kh\u00f4ng xem x\u00e9t ph\u1ea1m vi c\u1ee7a n\u00f3. Ph\u00f2ng th\u00ed nghi\u1ec7m n\u00ean \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn cho ph\u1ea1m vi v\u00e0 tham s\u1ed1, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn.<br \/>\nB\u1ecf qua c\u00e1c \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn khi ch\u00fang g\u1ea7n gi\u1edbi h\u1ea1n. Gi\u00e1 tr\u1ecb \u0111\u1ecdc n\u1eb1m trong dung sai nh\u01b0ng \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn v\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n th\u00ec kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn. C\u00e1c quy t\u1eafc quy \u0111\u1ecbnh c\u00e1ch x\u1eed l\u00fd c\u00e1c tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady.<br \/>\nKh\u00f4ng t\u00ednh \u0111\u1ebfn d\u1eef li\u1ec7u ph\u00e1t hi\u1ec7n ban \u0111\u1ea7u. L\u1ed7i n\u00e0y \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3 l\u00e0 sai l\u1ea7m t\u1ed1n k\u00e9m nh\u1ea5t trong danh s\u00e1ch.<br \/>\nX\u1eed l\u00fd vi\u1ec7c c\u1ed1 \u0111\u1ecbnh nh\u01b0 c\u01a1 h\u1ecdc thay v\u00ec \u0111o l\u01b0\u1eddng. Thanh d\u1eabn, k\u1eb9p v\u00e0 ti\u1ebfp \u0111i\u1ec3m c\u00f3 m\u1eb7t trong qu\u00e1 tr\u00ecnh \u0111o v\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3.<br \/>\nQu\u00ean c\u00e1c kho\u1ea3ng th\u1eddi gian. Ch\u1ee9ng nh\u1eadn h\u1ebft h\u1ea1n c\u00f3 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 hai th\u00e1ng s\u1ea3n xu\u1ea5t n\u00e0o l\u00e0 h\u1ee3p l\u1ec7, b\u1ea5t k\u1ec3 thi\u1ebft b\u1ecb c\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng hay kh\u00f4ng.<br \/>\nL\u01b0u tr\u1eef ch\u1ee9ng ch\u1ec9 m\u00e0 kh\u00f4ng t\u1ed5 ch\u1ee9c ch\u1ec9 m\u1ee5c c\u1ee7a ch\u00fang. Ch\u1ee9ng ch\u1ec9 kh\u00f4ng th\u1ec3 tr\u00ecnh b\u00e0y trong ki\u1ec3m to\u00e1n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi ch\u1ee9ng ch\u1ec9 ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c c\u1ea5p.<\/li>\n<\/ul>\n<h2>Chi ph\u00ed n\u00e0y l\u00e0 bao nhi\u00eau v\u00e0 n\u00f3 mang l\u1ea1i g\u00ec<\/h2>\n<p>Chi ph\u00ed h\u00e0ng n\u0103m cho vi\u1ec7c hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn c\u1ee7a b\u0103ng th\u1eed nghi\u1ec7m b\u1ed9 ng\u1eaft m\u1ea1ch \u0111a k\u00eanh l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3 so v\u1edbi chi ph\u00ed v\u1ed1n c\u1ee7a thi\u1ebft b\u1ecb, v\u00e0 n\u00f3 nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi chi ph\u00ed c\u00f3 th\u1ec3 x\u1ea3y ra do m\u1ed9t cu\u1ed9c ki\u1ec3m to\u00e1n k\u00e9m: ch\u1ee9ng nh\u1eadn kh\u00f4ng \u0111\u1ea1t, l\u00e0m tr\u00ec ho\u00e3n vi\u1ec7c ra m\u1eaft s\u1ea3n ph\u1ea9m, ki\u1ec3m to\u00e1n nh\u00e0 ph\u00e2n ph\u1ed1i d\u1eabn \u0111\u1ebfn h\u1ee7y b\u1ecf th\u1ecfa thu\u1eadn giao h\u00e0ng, \u0111i\u1ec1u tra s\u1ef1 c\u1ed1 hi\u1ec7n tr\u01b0\u1eddng do thi\u1ebfu h\u1ed3 s\u01a1 ki\u1ec3m tra h\u1ee3p l\u1ec7, ho\u1eb7c thu h\u1ed3i s\u1ea3n ph\u1ea9m do sai l\u1ec7ch kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n so v\u1edbi ti\u00eau chu\u1ea9n.<\/p>\n<p>L\u1eadp lu\u1eadn th\u01b0\u01a1ng m\u1ea1i n\u00e0y \u00edt ph\u1ee9c t\u1ea1p h\u01a1n l\u1eadp lu\u1eadn k\u1ef9 thu\u1eadt. B\u1ea5t k\u1ef3 nh\u00e0 s\u1ea3n xu\u1ea5t n\u00e0o b\u00e1n s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh tr\u00ean c\u00e1c th\u1ecb tr\u01b0\u1eddng xu\u1ea5t kh\u1ea9u c\u00f3 quy \u0111\u1ecbnh kh\u00f4ng ch\u1ec9 b\u00e1n ph\u1ea7n c\u1ee9ng m\u00e0 c\u00f2n b\u00e1n s\u1ef1 tu\u00e2n th\u1ee7 \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a \u0111\u1ea7y \u0111\u1ee7. <strong>hi\u1ec7u chu\u1ea9n c\u00e1c thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng<\/strong> l\u00e0 \u0111i\u1ec1u \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ef1 tu\u00e2n th\u1ee7 t\u1ed3n t\u1ea1i. Kh\u00e1ch h\u00e0ng t\u1eeb c\u00e1c qu\u1ed1c gia nh\u01b0 \u1ea4n \u0110\u1ed9, Th\u1ed5 Nh\u0129 K\u1ef3, Brazil v\u00e0 c\u00e1c qu\u1ed1c gia V\u00f9ng V\u1ecbnh hi\u1ec7n nay h\u1ecfi nh\u00e0 cung c\u1ea5p v\u1ec1 tr\u1ea1ng th\u00e1i hi\u1ec7u chu\u1ea9n c\u1ee7a thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m khi \u0111\u00e1nh gi\u00e1 nh\u00e0 cung c\u1ea5p thay v\u00ec ch\u1ec9 c\u00f3 ch\u1ee9ng ch\u1ec9 cho s\u1ea3n ph\u1ea9m. N\u1ebfu nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eb5n s\u00e0ng tr\u1ea3 l\u1eddi ngay c\u00e2u h\u1ecfi v\u1ec1 tr\u1ea1ng th\u00e1i hi\u1ec7u chu\u1ea9n, vi\u1ec7c \u0111\u00e1nh gi\u00e1 c\u00f3 th\u1ec3 m\u1ea5t \u00edt th\u1eddi gian h\u01a1n, v\u00ec c\u00e1c ph\u1ea3n \u0111\u1ed1i c\u1ee7a kh\u00e1ch h\u00e0ng s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u01b0a ra \u1edf giai \u0111o\u1ea1n \u0111\u00e1nh gi\u00e1.<\/p>\n<h2>Benlong Automation v\u00e0 Thi\u1ebft B\u1ecb Ki\u1ec3m Tra C\u1ea5p \u0110o L\u01b0\u1eddng<\/h2>\n<p><a href=\"https:\/\/benlongkj.com\/vi\/\">C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 T\u1ef1 \u0111\u1ed9ng h\u00f3a Benlong.<\/a> l\u00e0 nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m tra cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n h\u1ea1 \u00e1p t\u1eeb khi th\u00e0nh l\u1eadp n\u0103m 2008 t\u1ea1i V\u0129nh Ch\u00e2u, t\u1ec9nh Chi\u1ebft Giang, trung t\u00e2m ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n h\u1ea1 \u00e1p c\u1ee7a Trung Qu\u1ed1c. C\u00f4ng ty thi\u1ebft k\u1ebf c\u00e1c gi\u00e1 hi\u1ec7u chu\u1ea9n nhi\u1ec7t, gi\u00e1 th\u1eed nghi\u1ec7m ng\u1eaft t\u1eeb t\u00ednh, thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m \u0111i\u1ec7n m\u00f4i, gi\u00e1 th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n, thi\u1ebft b\u1ecb hi\u1ec7u chu\u1ea9n \u0111\u1ed3ng h\u1ed3 \u0111o n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00e1c t\u1ed5 h\u1ee3p ki\u1ec3m tra \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng m\u00e1y t\u00ednh.<\/p>\n<p>V\u00ec c\u00e1c thi\u1ebft b\u1ecb n\u00e0y l\u00e0 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng c\u0169ng gi\u1ed1ng nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t, m\u1ed7i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tu\u00e2n th\u1ee7 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u00e3 c\u00f4ng b\u1ed1 cho m\u1ed7i k\u00eanh, c\u00e1c ch\u1ec9 s\u1ed1 \u1ed5n \u0111\u1ecbnh trong ng\u00e0y l\u00e0m vi\u1ec7c, ghi d\u1eef li\u1ec7u \u0111\u1ec3 tham kh\u1ea3o trong t\u01b0\u01a1ng lai v\u00e0 k\u1ebft n\u1ed1i MES. Do \u0111\u00f3, t\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb \u0111\u1ec1u \u0111\u01b0\u1ee3c cung c\u1ea5p k\u00e8m theo ch\u1ee9ng ch\u1ec9 hi\u1ec7u chu\u1ea9n v\u00e0 tr\u1ea3i qua c\u00e1c b\u00e0i ki\u1ec3m tra nghi\u1ec7m thu t\u1ea1i FAT v\u00e0 SAT \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t ch\u00ednh th\u1ee9c, kh\u00f4ng ph\u1ea3i sau \u0111\u00f3.<\/p>\n<p>Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u l\u00e0m vi\u1ec7c tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ecd hi\u1ec3u h\u1ecd \u0111ang \u0111o g\u00ec, \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0 h\u1ecd \u0111\u00e3 c\u00f4ng b\u1ed1 l\u00e0 g\u00ec v\u00e0 h\u1ecd c\u00f3 th\u1ec3 ch\u1ee9ng minh \u0111i\u1ec1u g\u00ec. C\u00e1c k\u1ef9 s\u01b0 c\u1ee7a Benlong b\u1eaft \u0111\u1ea7u c\u00f4ng vi\u1ec7c t\u1eeb ph\u00e2n t\u00edch \u0111\u00f3.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.iso.org\/standard\/66912.html\" target=\"_blank\" rel=\"noopener\">ISO\/IEC 17025:2017 \u2014 Y\u00eau c\u1ea7u chung v\u1ec1 n\u0103ng l\u1ef1c c\u1ee7a ph\u00f2ng th\u1eed nghi\u1ec7m v\u00e0 hi\u1ec7u chu\u1ea9n<\/a>. Ti\u00eau chu\u1ea9n c\u00f4ng nh\u1eadn x\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec m\u1ed9t ph\u00f2ng hi\u1ec7u chu\u1ea9n b\u00ean th\u1ee9 ba ph\u1ea3i ch\u1ee9ng minh v\u00e0 nh\u1eefng g\u00ec b\u00e1o c\u00e1o c\u1ee7a n\u00f3 ph\u1ea3i ch\u1ee9a.<\/li>\n<li><a href=\"https:\/\/ilac.org\/publications-and-resources\/ilac-policy-series\/\" target=\"_blank\" rel=\"noopener\">ILAC Policy Series \u2014 ILAC P14, Ch\u00ednh s\u00e1ch v\u1ec1 \u0110\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn \u0111o l\u01b0\u1eddng trong Hi\u1ec7u chu\u1ea9n<\/a>. \u0110\u1eb7t ra c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u01b0\u1edbc l\u01b0\u1ee3ng v\u00e0 khai b\u00e1o \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn m\u1edf r\u1ed9ng tr\u00ean c\u00e1c ch\u1ee9ng ch\u1ec9 hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn.<\/li>\n<li><a href=\"https:\/\/www.bipm.org\/en\/committees\/jc\/jcgm\/publications\" target=\"_blank\" rel=\"noopener\">C\u00e1c \u1ea5n ph\u1ea9m JCGM (BIPM) \u2014 H\u01b0\u1edbng d\u1eabn bi\u1ec3u th\u1ecb \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn trong \u0111o l\u01b0\u1eddng (GUM) v\u00e0 T\u1eeb v\u1ef1ng qu\u1ed1c t\u1ebf v\u1ec1 \u0111o l\u01b0\u1eddng (VIM)<\/a>. Hai t\u00e0i li\u1ec7u n\u1ec1n t\u1ea3ng \u0111\u1ee9ng sau m\u1ecdi ng\u00e2n s\u00e1ch \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn v\u00e0 m\u1ecdi \u0111\u1ecbnh ngh\u0129a v\u1ec1 kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" target=\"_blank\" rel=\"noopener\">IEC 60947-2 \u2014 Thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p th\u1ea5p, Ph\u1ea7n 2: B\u1ed9 ng\u1eaft m\u1ea1ch<\/a>. \u0110\u1ecbnh ngh\u0129a c\u00e1c y\u00eau c\u1ea7u th\u1eed qu\u00e1 t\u1ea3i, ng\u1eafn m\u1ea1ch v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3 m\u00e0 c\u00e1c b\u0103ng th\u1eed MCCB ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66269\" target=\"_blank\" rel=\"noopener\">IEC 60898-1 \u2014 B\u1ed9 ng\u1eaft m\u1ea1ch b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho c\u00e1c l\u1eafp \u0111\u1eb7t gia \u0111\u00ecnh v\u00e0 t\u01b0\u01a1ng t\u1ef1<\/a>. Quy \u0111\u1ecbnh c\u00e1c c\u1eeda s\u1ed5 th\u1eddi gian ng\u1eaft m\u1ea1ch v\u00e0 \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m m\u00e0 thi\u1ebft b\u1ecb hi\u1ec7u chu\u1ea9n MCB ph\u1ea3i t\u1ea1o ra v\u00e0 \u0111o l\u01b0\u1eddng.<\/li>\n<\/ul>\n<p>M\u1ed9t b\u1ed9 ng\u1eaft r\u1eddi kh\u1ecfi nh\u00e0 m\u00e1y mang theo m\u1ed9t l\u1eddi h\u1ee9a ng\u1ea7m v\u1ec1 c\u00e1ch n\u00f3 s\u1ebd ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u1ed7i. B\u1eb1ng ch\u1ee9ng duy nh\u1ea5t \u0111\u1eb1ng sau l\u1eddi h\u1ee9a \u0111\u00f3 l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c con s\u1ed1 do m\u00e1y m\u00f3c t\u1ea1o ra, v\u00e0 nh\u1eefng con s\u1ed1 \u0111\u00f3 c\u00f3 gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c b\u1eb1ng kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1eb1ng sau ch\u00fang. Vi\u1ec7c x\u1eed l\u00fd <strong>\u0111o l\u01b0\u1eddng v\u00e0 thi\u1ebft b\u1ecb \u0111o<\/strong> nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd, v\u1edbi hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn, \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn \u0111\u01b0\u1ee3c ghi ch\u00e9p, \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 ghi nh\u1eadt k\u00fd d\u1eef li\u1ec7u t\u1eebng \u0111\u01a1n v\u1ecb, ch\u00ednh l\u00e0 \u0111i\u1ec1u bi\u1ebfn k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m th\u00e0nh b\u1eb1ng ch\u1ee9ng. N\u00f3 c\u0169ng l\u00e0 \u0111i\u1ec1u m\u00e0 c\u00e1c nh\u00e0 mua qu\u1ed1c t\u1ebf ng\u00e0y c\u00e0ng ki\u1ec3m tra \u0111\u1ea7u ti\u00ean.<\/p>","protected":false},"excerpt":{"rendered":"<p>At any factory audit of circuit breaker manufacturing, the auditor tends to shift the focus from the breaker itself to the equipment that has been used during the testing of the same breaker. The relevant question is how trustworthy the bench is. A time of 47.2 seconds is meaningless on its own. It is important [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1770,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/comments?post=1767"}],"version-history":[{"count":1,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1767\/revisions"}],"predecessor-version":[{"id":1771,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1767\/revisions\/1771"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media\/1770"}],"wp:attachment":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media?parent=1767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/categories?post=1767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/tags?post=1767"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}