{"id":8390,"date":"2026-06-10T17:32:48","date_gmt":"2026-06-10T17:32:48","guid":{"rendered":"https:\/\/www.yunrui-controls.com\/?p=8390"},"modified":"2026-06-10T17:32:48","modified_gmt":"2026-06-10T17:32:48","slug":"radar-level-transmitter-frequency-guide","status":"publish","type":"post","link":"https:\/\/www.yunrui-controls.com\/vi\/radar-level-transmitter-frequency-guide\/","title":{"rendered":"M\u00e1y \u0111o m\u1ee9c b\u1eb1ng radar: T\u1ea7n s\u1ed1 cao so v\u1edbi t\u1ea7n s\u1ed1 th\u1ea5p \u2013 Lo\u1ea1i n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u t\u1ed1t h\u01a1n?"},"content":{"rendered":"<p>&nbsp;<\/p>\n<div style=\"font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.8; color: #333; max-width: 100%;\">\n<p style=\"font-size: 16px; color: #666; font-style: italic; margin-bottom: 30px; border-left: 4px solid #1e5aa8; padding-left: 15px;\">L\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 sai s\u1ebd d\u1eabn \u0111\u1ebfn m\u1ea5t t\u00edn hi\u1ec7u. Hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean t\u1eafc l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 ch\u1ecdn \u0111\u00fang m\u00f4 h\u00ecnh.<\/p>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">1. L\u00e0m th\u1ebf n\u00e0o <a href=\"https:\/\/www.yunrui-controls.com\/vi\/brands\/endress-hauser\/radar-level-measurement\/\">B\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u \u0111o m\u1ee9c b\u1eb1ng radar<\/a> M\u1ee9c \u0111\u1ed9 \u0111o<\/h3>\n<p>C\u00e1c thi\u1ebft b\u1ecb \u0111o m\u1ee9c b\u1eb1ng radar ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd... <strong>Th\u1eddi gian bay (TOF)<\/strong> Nguy\u00ean l\u00fd: S\u00f3ng vi ba \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb \u0103ng-ten, ph\u1ea3n x\u1ea1 t\u1eeb b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng v\u00e0 quay tr\u1edf l\u1ea1i m\u00e1y ph\u00e1t. B\u1eb1ng c\u00e1ch \u0111o th\u1eddi gian kh\u1ee9 h\u1ed3i v\u00e0 nh\u00e2n v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng chia cho hai, kho\u1ea3ng c\u00e1ch \u0111\u1ebfn b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n.<\/p>\n<div style=\"background: #f8f9fa; padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #1e5aa8;\">\n<p style=\"margin: 0; font-family: monospace; font-size: 16px;\"><strong>Kho\u1ea3ng c\u00e1ch D = (c \u00d7 t) \/ 2<\/strong><\/p>\n<p style=\"margin: 10px 0 0 0; font-size: 14px; color: #666;\">c = T\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng (~3\u00d710\u2078 m\/s)<br \/>\nt = Th\u1eddi gian kh\u1ee9 h\u1ed3i (m\u1ee9c picogi\u00e2y)<\/p>\n<\/div>\n<p>T\u1ea7n s\u1ed1 quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp b\u01b0\u1edbc s\u00f3ng, g\u00f3c ch\u00f9m tia v\u00e0 \u0111\u1ed9 t\u1eadp trung n\u0103ng l\u01b0\u1ee3ng \u2013 \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111o l\u01b0\u1eddng, \u0111\u1ed9 r\u1ed9ng ch\u00f9m tia v\u00e0 t\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a \u1ee9ng d\u1ee5ng. \u0110\u00e2y l\u00e0 quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng \u0111\u1ea7u ti\u00ean trong vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 ph\u00e1t. C\u00e1c nh\u00e0 cung c\u1ea5p h\u00e0ng \u0111\u1ea7u nh\u01b0 <a style=\"color: #1e5aa8; text-decoration: none; font-weight: 600;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/brands\/endress-hauser\/\">Endress+Hauser (E+H)<\/a>, L\u00e0 m\u1ed9t c\u00f4ng ty ti\u00ean phong trong c\u00f4ng ngh\u1ec7 \u0111o m\u1ee9c b\u1eb1ng radar, cung c\u1ea5p c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m to\u00e0n di\u1ec7n tr\u1ea3i r\u1ed9ng tr\u00ean c\u00e1c t\u1ea7n s\u1ed1 6 GHz, 26 GHz v\u00e0 80 GHz \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111a d\u1ea1ng.<\/p>\n<div style=\"background: #e8f4f8; padding: 20px; border-radius: 8px; margin: 20px 0;\">\n<h4 style=\"color: #1e5aa8; margin-top: 0;\">\ud83d\udd0a T\u1ea7n s\u1ed1 th\u1ea5p so v\u1edbi t\u1ea7n s\u1ed1 cao: So s\u00e1nh b\u01b0\u1edbc s\u00f3ng<\/h4>\n<ul style=\"margin: 10px 0; padding-left: 20px;\">\n<li><strong>6 GHz<\/strong> B\u01b0\u1edbc s\u00f3ng \u2248 50mm (k\u00edch th\u01b0\u1edbc b\u1eb1ng n\u1eafm tay)<\/li>\n<li><strong>26 GHz<\/strong> B\u01b0\u1edbc s\u00f3ng \u2248 11mm (k\u00edch th\u01b0\u1edbc b\u1eb1ng m\u00f3ng tay)<\/li>\n<li><strong>80 GHz<\/strong> B\u01b0\u1edbc s\u00f3ng \u2248 3,7mm (\u0111\u1ea7u kim)<\/li>\n<\/ul>\n<p style=\"margin-bottom: 0; color: #666;\">\u2191 T\u1ea7n s\u1ed1 cao h\u01a1n = b\u01b0\u1edbc s\u00f3ng ng\u1eafn h\u01a1n = ch\u00f9m tia h\u1eb9p h\u01a1n = \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao h\u01a1n<\/p>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">2. T\u1ea7n s\u1ed1 th\u1ea5p so v\u1edbi t\u1ea7n s\u1ed1 cao: So s\u00e1nh to\u00e0n di\u1ec7n<\/h3>\n<div style=\"display: flex; flex-wrap: wrap; gap: 20px; margin: 20px 0;\">\n<div style=\"flex: 1; min-width: 280px; background: #fff3e0; padding: 20px; border-radius: 8px; border-top: 4px solid #ff9800;\">\n<h4 style=\"color: #e65100; margin-top: 0;\">\ud83d\udfe0 Radar t\u1ea7n s\u1ed1 th\u1ea5p<\/h4>\n<p style=\"font-size: 14px; color: #666; margin-bottom: 15px;\">T\u1ea7n s\u1ed1 ti\u00eau bi\u1ec3u: 6 GHz \/ 10 GHz<\/p>\n<ul style=\"padding-left: 20px; margin: 0;\">\n<li>B\u01b0\u1edbc s\u00f3ng: 30-50 mm<\/li>\n<li>K\u00edch th\u01b0\u1edbc \u0103ng-ten l\u1edbn<\/li>\n<li>G\u00f3c chi\u1ebfu r\u1ed9ng (15\u00b0-30\u00b0)<\/li>\n<li>\u0110\u1ed9 ch\u00ednh x\u00e1c: \u00b15-10 mm<\/li>\n<li>T\u1ea7m b\u1eafn: l\u00ean \u0111\u1ebfn 20-30 m<\/li>\n<li>\u2705 Kh\u1ea3 n\u0103ng th\u1ea9m th\u1ea5u b\u1ecdt m\u1ea1nh m\u1ebd<\/li>\n<li>\u2705 Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t c\u1ee7a kh\u00ed<\/li>\n<li>\u274c Kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi b\u1ec3 c\u00e1 nh\u1ecf<\/li>\n<li>Gi\u00e1 th\u1ea5p h\u01a1n<\/li>\n<\/ul>\n<\/div>\n<div style=\"flex: 1; min-width: 280px; background: #e3f2fd; padding: 20px; border-radius: 8px; border-top: 4px solid #2196f3;\">\n<h4 style=\"color: #1565c0; margin-top: 0;\">\ud83d\udd35 Radar t\u1ea7n s\u1ed1 cao<\/h4>\n<p style=\"font-size: 14px; color: #666; margin-bottom: 15px;\">T\u1ea7n s\u1ed1 ti\u00eau bi\u1ec3u: 26 GHz \/ 80 GHz<\/p>\n<ul style=\"padding-left: 20px; margin: 0;\">\n<li>B\u01b0\u1edbc s\u00f3ng: 3,7-11 mm<\/li>\n<li>\u0102ng-ten nh\u1ecf (c\u00f3 th\u1ec3 l\u00e0 lo\u1ea1i ph\u1eb3ng)<\/li>\n<li>G\u00f3c ch\u00f9m tia h\u1eb9p (3\u00b0-8\u00b0)<\/li>\n<li>\u0110\u1ed9 ch\u00ednh x\u00e1c: \u00b11-2 mm<\/li>\n<li>Ph\u1ea1m vi: 30-100 m (80G)<\/li>\n<li>\u274c Kh\u1ea3 n\u0103ng t\u1ea1o b\u1ecdt y\u1ebfu<\/li>\n<li>\u26a0\ufe0f C\u00e1c l\u01b0u \u00fd v\u1ec1 vi\u1ec7c ni\u00eam phong<\/li>\n<li>\u2705 Tuy\u1ec7t v\u1eddi cho b\u1ec3 c\u00e1 nh\u1ecf<\/li>\n<li>Gi\u00e1 cao h\u01a1n (\u0111\u1eb7c bi\u1ec7t l\u00e0 lo\u1ea1i 80G)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div style=\"background: #fff8e1; padding: 15px 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #ffc107;\">\n<p style=\"margin: 0;\"><strong>\u26a0\ufe0f L\u01b0u \u00fd quan tr\u1ecdng:<\/strong> Thu\u1eadt ng\u1eef \u201ckh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u\u201d c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m r\u00f5 c\u1ea9n th\u1eadn trong \u0111o m\u1ee9c ch\u1ea5t l\u1ecfng b\u1eb1ng radar \u2013 t\u1ea7n s\u1ed1 th\u1ea5p xuy\u00ean th\u1ea5u b\u1ecdt v\u00e0 h\u01a1i n\u01b0\u1edbc t\u1ed1t h\u01a1n do b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n, trong khi t\u1ea7n s\u1ed1 cao cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng t\u1eadp trung v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao h\u01a1n nh\u01b0ng nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi s\u1ef1 suy gi\u1ea3m c\u1ee7a b\u1ecdt v\u00e0 h\u01a1i n\u01b0\u1edbc. C\u1ea3 hai \u0111\u1ec1u kh\u00f4ng xuy\u00ean th\u1ea5u v\u00e0o b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng \u2013 radar \u0111o s\u1ef1 ph\u1ea3n x\u1ea1 b\u1ec1 m\u1eb7t, ch\u1ee9 kh\u00f4ng ph\u1ea3i s\u1ef1 xuy\u00ean th\u1ea5u!<\/p>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">3. T\u1ea1i sao t\u1ea7n s\u1ed1 th\u1ea5p xuy\u00ean th\u1ea5u b\u1ecdt t\u1ed1t h\u01a1n?<\/h3>\n<p>B\u1ecdt x\u1ed1p bao g\u1ed3m v\u00f4 s\u1ed1 bong b\u00f3ng nh\u1ecf li ti t\u1ea1o th\u00e0nh m\u1ed9t m\u00f4i tr\u01b0\u1eddng kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t. Khi s\u00f3ng vi ba \u0111i qua b\u1ecdt x\u1ed1p, hi\u1ec7n t\u01b0\u1ee3ng t\u00e1n x\u1ea1 v\u00e0 h\u1ea5p th\u1ee5 g\u00e2y ra s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u.<\/p>\n<h4 style=\"color: #1e5aa8; margin-top: 20px;\">M\u1ed1i quan h\u1ec7 gi\u1eefa t\u00e1n x\u1ea1 v\u00e0 b\u01b0\u1edbc s\u00f3ng<\/h4>\n<p>Theo <strong>L\u00fd thuy\u1ebft t\u00e1n x\u1ea1 Rayleigh<\/strong>Khi k\u00edch th\u01b0\u1edbc v\u1eadt c\u1ea3n nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi b\u01b0\u1edbc s\u00f3ng, s\u1ef1 t\u00e1n x\u1ea1 l\u00e0 t\u1ed1i thi\u1ec3u; khi k\u00edch th\u01b0\u1edbc v\u1eadt c\u1ea3n g\u1ea7n b\u1eb1ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 b\u01b0\u1edbc s\u00f3ng, s\u1ef1 t\u00e1n x\u1ea1 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3.<\/p>\n<div style=\"background: #f5f5f5; padding: 20px; border-radius: 8px; margin: 20px 0;\">\n<p style=\"margin: 0 0 15px 0;\"><strong>Hi\u1ec3u bi\u1ebft th\u1ef1c ti\u1ec5n:<\/strong><\/p>\n<p style=\"margin: 0;\">\u0110\u01b0\u1eddng k\u00ednh bong b\u00f3ng b\u1ecdt th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 0,1-5 mm.<\/p>\n<ul style=\"margin: 10px 0 0 0; padding-left: 20px;\">\n<li><strong>T\u1ea7n s\u1ed1 th\u1ea5p (6 GHz)<\/strong> B\u01b0\u1edbc s\u00f3ng \u2248 50 mm \u2192 b\u1ecdt kh\u00ed nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi b\u01b0\u1edbc s\u00f3ng \u2192 t\u00e1n x\u1ea1 y\u1ebfu, kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u t\u1ed1t.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 cao (80 GHz)<\/strong> B\u01b0\u1edbc s\u00f3ng \u2248 3,7 mm \u2192 b\u1ecdt kh\u00ed c\u00f3 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u01b0\u01a1ng b\u01b0\u1edbc s\u00f3ng \u2192 t\u00e1n x\u1ea1 m\u1ea1nh, m\u1ea5t t\u00edn hi\u1ec7u \u0111\u00e1ng k\u1ec3<\/li>\n<\/ul>\n<\/div>\n<h4 style=\"color: #1e5aa8; margin-top: 20px;\">Hi\u1ec7u \u1ee9ng h\u01a1i n\u01b0\u1edbc v\u00e0 ng\u01b0ng t\u1ee5<\/h4>\n<p>C\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc h\u1ea5p th\u1ee5 m\u1ea1nh s\u00f3ng vi ba (l\u00f2 vi s\u00f3ng s\u1eed d\u1ee5ng nguy\u00ean l\u00fd n\u00e0y). T\u1ea7n s\u1ed1 cao h\u01a1n b\u1ecb c\u00e1c ph\u00e2n t\u1eed h\u01a1i n\u01b0\u1edbc h\u1ea5p th\u1ee5 nhi\u1ec1u h\u01a1n. Do \u0111\u00f3, trong c\u00e1c b\u1ec3 ch\u1ee9a v\u00e0 l\u00f2 ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao v\u1edbi h\u01a1i n\u01b0\u1edbc \u0111\u1eadm \u0111\u1eb7c, radar t\u1ea7n s\u1ed1 th\u1ea5p \u00edt b\u1ecb suy gi\u1ea3m t\u00edn hi\u1ec7u h\u01a1n v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u h\u01a1i n\u01b0\u1edbc t\u1ed1t h\u01a1n.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px;\">\n<thead>\n<tr style=\"background: #1e5aa8; color: white;\">\n<th style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\">M\u00f4i tr\u01b0\u1eddng giao thoa<\/th>\n<th style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">T\u1ea7n s\u1ed1 th\u1ea5p (6 GHz)<\/th>\n<th style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">T\u1ea7n s\u1ed1 cao (26 GHz)<\/th>\n<th style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">T\u1ea7n s\u1ed1 cao (80 GHz)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f9f9f9;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">L\u1edbp x\u1ed1p (&lt; 100mm)<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 C\u00f3 th\u1ec3 xuy\u00ean th\u1ee7ng<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f Suy gi\u1ea3m nh\u1eb9<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #f44336;\">\u274c Suy gi\u1ea3m nghi\u00eam tr\u1ecdng<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">L\u1edbp x\u1ed1p (&gt; 200mm)<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 V\u1eabn c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #f44336;\">\u274c M\u1ea5t t\u00edn hi\u1ec7u cao<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #f44336;\">\u274c V\u1ec1 c\u01a1 b\u1ea3n l\u00e0 th\u1ea5t b\u1ea1i<\/td>\n<\/tr>\n<tr style=\"background: #f9f9f9;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">H\u01a1i n\u01b0\u1edbc (\u00e1nh s\u00e1ng)<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 T\u00e1c \u0111\u1ed9ng t\u1ed1i thi\u1ec3u<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 T\u00e1c \u0111\u1ed9ng t\u1ed1i thi\u1ec3u<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f C\u00f3 m\u1ed9t s\u1ed1 suy gi\u1ea3m<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">H\u01a1i n\u01b0\u1edbc (nhi\u1ec7t \u0111\u1ed9\/n\u1ed3ng \u0111\u1ed9 cao)<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 Kh\u1ea3 n\u0103ng th\u1ea9m th\u1ea5u t\u1ed1t<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f B\u1ecb \u1ea3nh h\u01b0\u1edfng<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #f44336;\">\u274c \u1ea2nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3<\/td>\n<\/tr>\n<tr style=\"background: #f9f9f9;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Kh\u00ed \u0103n m\u00f2n<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 T\u00e1c \u0111\u1ed9ng t\u1ed1i thi\u1ec3u<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f Y\u00eau c\u1ea7u ni\u00eam phong cao.<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f Y\u00eau c\u1ea7u ni\u00eam phong cao.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">B\u1ec1 m\u1eb7t khu\u1ea5y \u0111\u1ed9ng\/xo\u00e1y<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #ff9800;\">\u26a0\ufe0f M\u1ee9c \u0111\u1ed9 v\u1eeba ph\u1ea3i<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 Ph\u1ea3n h\u1ed3i nhanh h\u01a1n<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd; color: #4caf50;\">\u2705 Ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">4. G\u00f3c chi\u1ebfu s\u00e1ng \u2013 Li\u1ec7u n\u00f3 c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi b\u1ec3 ch\u1ee9a c\u1ee7a b\u1ea1n kh\u00f4ng?<\/h3>\n<p><strong>G\u00f3c ch\u00f9m tia<\/strong> Tham s\u1ed1 n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn g\u00f3c ph\u00e2n k\u1ef3 c\u1ee7a s\u00f3ng vi ba ph\u00e1t ra t\u1eeb \u0103ng-ten. T\u1ea7n s\u1ed1 cao h\u01a1n cho ph\u00e9p kh\u1ea9u \u0111\u1ed9 \u0103ng-ten l\u1edbn h\u01a1n so v\u1edbi b\u01b0\u1edbc s\u00f3ng, t\u1ea1o ra ch\u00f9m tia t\u1eadp trung h\u01a1n (h\u1eb9p h\u01a1n). <a style=\"color: #1e5aa8; text-decoration: none; font-weight: 600;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/brands\/endress-hauser\/\">D\u00f2ng Micropilot FMR6x c\u1ee7a E+H<\/a>, V\u00ed d\u1ee5, thi\u1ebft k\u1ebf \u0103ng-ten ph\u1eb3ng 80 GHz c\u1ee7a n\u00f3 cho ph\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c g\u00f3c ch\u00f9m tia h\u1eb9p t\u1edbi 3\u00b0, l\u00fd t\u01b0\u1edfng cho vi\u1ec7c l\u1eafp \u0111\u1eb7t trong c\u00e1c b\u1ec3 ch\u1ee9a nh\u1ecf c\u00f3 v\u1eadt c\u1ea3n b\u00ean trong.<\/p>\n<div style=\"background: #f8f9fa; padding: 20px; border-radius: 8px; margin: 20px 0;\">\n<h4 style=\"color: #1e5aa8; margin-top: 0;\">\ud83d\udce1 D\u1eef li\u1ec7u g\u00f3c ch\u00f9m tia \u0111i\u1ec3n h\u00ecnh:<\/h4>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>\u0102ng-ten 6 GHz + DN100 \u2192 g\u00f3c ch\u00f9m tia ~24\u00b0<\/li>\n<li>\u0102ng-ten 26 GHz + DN80 \u2192 g\u00f3c ch\u00f9m tia ~8\u00b0<\/li>\n<li>\u0102ng-ten ph\u1eb3ng 80 GHz \u2192 g\u00f3c ch\u00f9m tia ~3\u00b0-4\u00b0<\/li>\n<\/ul>\n<\/div>\n<h4 style=\"color: #1e5aa8; margin-top: 20px;\">\u1ea2nh h\u01b0\u1edfng c\u1ee7a g\u00f3c ch\u00f9m tia \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t<\/h4>\n<p>N\u1ebfu \u0111\u01b0\u1eddng k\u00ednh b\u1ec3 nh\u1ecf nh\u01b0ng g\u00f3c chi\u1ebfu r\u1ed9ng, s\u00f3ng vi ba s\u1ebd va v\u00e0o th\u00e0nh b\u1ec3 ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn b\u00ean trong (c\u00e1nh khu\u1ea5y, cu\u1ed9n d\u00e2y gia nhi\u1ec7t), t\u1ea1o ra c\u00e1c t\u00edn hi\u1ec7u ph\u1ea3n x\u1ea1 sai l\u1ec7ch g\u00e2y ra c\u00e1c k\u1ebft qu\u1ea3 \u0111o kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c c\u00e1c \u0111\u1ec9nh nhi\u1ec5u c\u1ed1 \u0111\u1ecbnh.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px;\">\n<thead>\n<tr style=\"background: #1e5aa8; color: white;\">\n<th style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\">\u0110\u01b0\u1eddng k\u00ednh b\u1ec3 ch\u1ee9a<\/th>\n<th style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">T\u1ea7n su\u1ea5t khuy\u1ebfn ngh\u1ecb<\/th>\n<th style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\">L\u00fd lu\u1eadn<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f9f9f9;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">DN &lt; 500mm (b\u1ec3 ch\u1ee9a nh\u1ecf, \u0111\u01b0\u1eddng \u1ed1ng)<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\"><strong>80 GHz<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Ch\u00f9m s\u00e1ng c\u1ef1c h\u1eb9p, s\u1ebd kh\u00f4ng ch\u1ea1m v\u00e0o t\u01b0\u1eddng.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">DN 500mm-2000mm<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">26 GHz ho\u1eb7c 80 GHz<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong<\/td>\n<\/tr>\n<tr style=\"background: #f9f9f9;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">DN &gt; 2000mm b\u1ec3 ch\u1ee9a l\u1edbn<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\">6 GHz ho\u1eb7c 26 GHz<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Kh\u00f4ng gian r\u1ed9ng, t\u1ea7n s\u1ed1 th\u1ea5p c\u00f3 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng xa h\u01a1n.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">B\u1ec3 ch\u1ee9a c\u00f3 m\u00e1y khu\u1ea5y<\/td>\n<td style=\"padding: 12px; text-align: center; border: 1px solid #ddd;\"><strong>80 GHz<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Ch\u00f9m tia h\u1eb9p tr\u00e1nh g\u00e2y nhi\u1ec5u cho m\u00e1y khu\u1ea5y.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"background: #e8f5e9; padding: 15px 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #4caf50;\">\n<p style=\"margin: 0;\"><strong>\ud83d\udca1 L\u01b0u \u00fd v\u1ec1 v\u00f9ng khu\u1ea5t khi l\u1eafp \u0111\u1eb7t:<\/strong> C\u00e1c thi\u1ebft b\u1ecb \u0111o m\u1ee9c b\u1eb1ng radar c\u00f3 v\u00f9ng m\u00f9 g\u1ea7n \u0111\u1ea7u (th\u01b0\u1eddng t\u1eeb 50-200 mm t\u00ednh t\u1eeb \u0103ng-ten), c\u00e1c lo\u1ea1i t\u1ea7n s\u1ed1 cao c\u00f3 v\u00f9ng m\u00f9 nh\u1ecf h\u01a1n. Khi m\u1ef1c ch\u1ea5t l\u1ecfng \u0111i v\u00e0o v\u00f9ng n\u00e0y, thi\u1ebft b\u1ecb s\u1ebd b\u00e1o l\u1ed7i. Lu\u00f4n lu\u00f4n \u0111\u1ec3 l\u1ea1i kho\u1ea3ng an to\u00e0n th\u00edch h\u1ee3p d\u1ef1a tr\u00ean m\u1ef1c ch\u1ea5t l\u1ecfng t\u1ed1i \u0111a th\u1ef1c t\u1ebf.<\/p>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">5. V\u00ec sao 80 GHz tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn sau n\u0103m 2015<\/h3>\n<p>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng h\u00e0ng \u0111\u1ea7u nh\u01b0 <a style=\"color: #1e5aa8; text-decoration: none; font-weight: 600;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/brands\/endress-hauser\/\">Endress+Hauser (E+H)<\/a>, E+H, Emerson v\u00e0 Siemens \u0111\u00e3 th\u00fac \u0111\u1ea9y s\u1ef1 chuy\u1ec3n \u0111\u1ed5i c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p sang c\u00f4ng ngh\u1ec7 80 GHz. \u0110\u1eb7c bi\u1ec7t, d\u00f2ng s\u1ea3n ph\u1ea9m Micropilot c\u1ee7a E+H \u0111\u00e3 ch\u1ee9ng minh nh\u1eefng l\u1ee3i th\u1ebf th\u1ef1c ti\u1ec5n c\u1ee7a radar t\u1ea7n s\u1ed1 cao trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau.<\/p>\n<p>Kho\u1ea3ng n\u0103m 2015, c\u00e1c thi\u1ebft b\u1ecb \u0111o m\u1ee9c b\u1eb1ng radar FMCW (s\u00f3ng li\u00ean t\u1ee5c \u0111i\u1ec1u t\u1ea7n) 80 GHz \u0111\u00e3 \u0111\u01b0\u1ee3c tung ra th\u1ecb tr\u01b0\u1eddng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn v\u00e0 nhanh ch\u00f3ng tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n c\u1ee7a ng\u00e0nh. M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh \u0111\u00e3 th\u00fac \u0111\u1ea9y s\u1ef1 thay \u0111\u1ed5i n\u00e0y:<\/p>\n<ul style=\"padding-left: 20px; line-height: 2;\">\n<li><strong>B\u01b0\u1edbc ti\u1ebfn v\u01b0\u1ee3t b\u1eadc v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111o l\u01b0\u1eddng:<\/strong> C\u00f4ng ngh\u1ec7 FMCW b\u0103ng r\u1ed9ng 80 GHz \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c \u00b11 mm, t\u1ed1t h\u01a1n m\u1ed9t b\u1eadc so v\u1edbi c\u00e1c m\u1eabu 6 GHz c\u0169 h\u01a1n v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u00b15 mm.<\/li>\n<li><strong>\u0102ng-ten thu nh\u1ecf:<\/strong> B\u01b0\u1edbc s\u00f3ng 80 GHz ch\u1ec9 3,7 mm cho ph\u00e9p t\u1ea1o ra c\u00e1c \u0103ng-ten m\u1ea3ng ph\u1eb3ng v\u1edbi k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, l\u00fd t\u01b0\u1edfng cho c\u00e1c t\u00e0u v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng nh\u1ecf.<\/li>\n<li><strong>G\u00f3c ch\u00f9m tia c\u1ef1c h\u1eb9p:<\/strong> ~3\u00b0-4\u00b0 c\u00f3 ngh\u0129a l\u00e0 s\u1ef1 nhi\u1ec5u t\u1eeb b\u00ean trong b\u1ec3 ch\u1ee9a l\u00e0 t\u1ed1i thi\u1ec3u, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a \u0111\u00e1ng k\u1ec3 c\u00e1c thi\u1ebft l\u1eadp tri\u1ec7t ti\u00eau ti\u1ebfng v\u1ecdng gi\u1ea3.<\/li>\n<li><strong>Ph\u1ea1m vi m\u1edf r\u1ed9ng:<\/strong> M\u1ed9t s\u1ed1 m\u1eabu c\u00f3 chi\u1ec1u d\u00e0i l\u00ean \u0111\u1ebfn 100 m, \u0111\u00e1p \u1ee9ng h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng l\u01b0u tr\u1eef c\u00f4ng nghi\u1ec7p.<\/li>\n<li><strong>Gi\u00e1 gi\u1ea3m nhanh ch\u00f3ng:<\/strong> S\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t \u0111\u00e3 \u0111\u01b0a gi\u00e1 th\u00e0nh c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb 80 GHz l\u00ean g\u1ea7n b\u1eb1ng gi\u00e1 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb 26 GHz, t\u1ea1o ra gi\u00e1 tr\u1ecb h\u1ea5p d\u1eabn.<\/li>\n<\/ul>\n<div style=\"background: #ffebee; padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #f44336;\">\n<h4 style=\"color: #c62828; margin-top: 0;\">Gi\u1edbi h\u1ea1n c\u1ee7a t\u1ea7n s\u1ed1 80 GHz:<\/h4>\n<ol style=\"margin: 0; padding-left: 20px;\">\n<li>\u0110i\u1ec1u ki\u1ec7n nhi\u1ec1u b\u1ecdt (b\u1ec3 l\u00ean men, d\u1ecbch \u0111en) \u2013 b\u1ecdt h\u1ea5p th\u1ee5 t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao; n\u00ean s\u1eed d\u1ee5ng radar t\u1ea7n s\u1ed1 th\u1ea5p ho\u1eb7c radar s\u00f3ng d\u1eabn h\u01b0\u1edbng.<\/li>\n<li>H\u01a1i n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9\/\u00e1p su\u1ea5t cao \u0111\u00f2i h\u1ecfi thi\u1ebft k\u1ebf l\u00e0m k\u00edn ch\u1eb7t ch\u1ebd h\u01a1n.<\/li>\n<li>\u1ee8ng d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u00ed \u0103n m\u00f2n m\u1ea1nh c\u1ea7n \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn tu\u1ed5i th\u1ecd c\u1ee7a l\u1edbp b\u1ecbt k\u00edn anten.<\/li>\n<\/ol>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">6. Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 theo \u1ee9ng d\u1ee5ng<\/h3>\n<div style=\"background: #e3f2fd; padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #2196f3;\">\n<h4 style=\"color: #1565c0; margin-top: 0;\">\u2705 \u01afu ti\u00ean b\u0103ng t\u1ea7n 80 GHz cho:<\/h4>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>C\u00e1c m\u1ea1ch m\u00e1u nh\u1ecf (DN &lt; 1000mm)<\/li>\n<li>L\u00f2 ph\u1ea3n \u1ee9ng c\u00f3 b\u1ed9 khu\u1ea5y ho\u1eb7c cu\u1ed9n d\u00e2y gia nhi\u1ec7t<\/li>\n<li>\u1ee8ng d\u1ee5ng \u0111\u01b0\u1eddng \u1ed1ng g\u1eafn b\u00ean h\u00f4ng<\/li>\n<li>\u0110o m\u1ee9c ch\u1ea5t r\u1eafn trong silo<\/li>\n<li>B\u1ec3 ch\u1ee9a chuy\u1ec3n giao quy\u1ec1n s\u1edf h\u1eefu c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao<\/li>\n<li>C\u1ed5ng l\u1eafp \u0111\u1eb7t r\u1ea5t nh\u1ecf (d\u01b0\u1edbi DN50)<\/li>\n<\/ul>\n<\/div>\n<div style=\"background: #fff3e0; padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #ff9800;\">\n<h4 style=\"color: #e65100; margin-top: 0;\">\ud83d\udfe0 \u01afu ti\u00ean t\u1ea7n s\u1ed1 th\u1ea5p 6 GHz cho:<\/h4>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>L\u1edbp b\u1ecdt d\u00e0y \u0111\u1eb7c li\u00ean t\u1ee5c tr\u00ean b\u1ec1 m\u1eb7t trung b\u00ecnh<\/li>\n<li>B\u1ec3 ch\u1ee9a nhi\u1ec7t \u0111\u1ed9 cao (h\u01a1i n\u01b0\u1edbc t\u1eadp trung)<\/li>\n<li>C\u00e1c b\u1ec3 ch\u1ee9a th\u1eb3ng \u0111\u1ee9ng c\u1ee1 l\u1edbn (cao &gt; 30 m)<\/li>\n<li>H\u01a1i c\u00f3 t\u00ednh \u0103n m\u00f2n m\u1ea1nh (clo, amoniac)<\/li>\n<li>C\u00e1c d\u1ef1 \u00e1n nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed v\u1edbi y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1ea5p h\u01a1n<\/li>\n<\/ul>\n<\/div>\n<div style=\"background: #f3e5f5; padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #9c27b0;\">\n<h4 style=\"color: #6a1b9a; margin-top: 0;\">\ud83d\udd35 \u0110\u1ecbnh v\u1ecb 26 GHz:<\/h4>\n<p style=\"margin: 0;\">L\u1ef1a ch\u1ecdn chuy\u1ec3n ti\u1ebfp gi\u1eefa t\u1ea7n s\u1ed1 th\u1ea5p v\u00e0 cao. Th\u00edch h\u1ee3p cho b\u1ec3 ch\u1ee9a c\u1ee1 trung b\u00ecnh (DN 1000-3000mm), \u0111i\u1ec1u ki\u1ec7n \u00edt b\u1ecdt. C\u00f4ng ngh\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n v\u1edbi ngu\u1ed3n cung c\u1ea5p ph\u1ee5 t\u00f9ng thay th\u1ebf \u1ed5n \u0111\u1ecbnh.<\/p>\n<\/div>\n<div style=\"background: #fce4ec; padding: 15px 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #e91e63;\">\n<p style=\"margin: 0;\"><strong>\u274c B\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u \u0111o m\u1ee9c b\u1eb1ng radar KH\u00d4NG ph\u00f9 h\u1ee3p v\u1edbi:<\/strong><\/p>\n<ul style=\"margin: 10px 0 0 0; padding-left: 20px;\">\n<li>M\u00f4i tr\u01b0\u1eddng c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ef1c th\u1ea5p (kh\u00ed h\u00f3a l\u1ecfng \u03b5 &lt; 1,5) \u2013 ph\u1ea3n x\u1ea1 t\u1ed1i thi\u1ec3u; s\u1eed d\u1ee5ng radar s\u00f3ng d\u1eabn h\u01b0\u1edbng.<\/li>\n<li>C\u1ea5u tr\u00fac b\u1ec3 ch\u1ee9a b\u1eb1ng l\u01b0\u1edbi kim lo\u1ea1i (r\u00f2 r\u1ec9 t\u00edn hi\u1ec7u)<\/li>\n<li>Hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec5u \u0111\u1ed9ng\/phun s\u01b0\u01a1ng m\u1ea1nh, kh\u00f4ng c\u00f3 b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<\/div>\n<div style=\"background: #e8f5e9; padding: 15px 20px; border-radius: 8px; margin: 20px 0; border-left: 4px solid #4caf50;\">\n<p style=\"margin: 0;\"><strong>\u2705 L\u00e0m r\u00f5 b\u1ec3 ch\u00e2n kh\u00f4ng:<\/strong> S\u00f3ng vi ba (s\u00f3ng \u0111i\u1ec7n t\u1eeb) lan truy\u1ec1n d\u1ec5 d\u00e0ng trong ch\u00e2n kh\u00f4ng (t\u1ed1c \u0111\u1ed9 b\u1eb1ng t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng). C\u00e1c b\u1ed9 \u0111o m\u1ee9c b\u1eb1ng radar ho\u1ea1t \u0111\u1ed9ng ho\u00e0n h\u1ea3o trong c\u00e1c b\u1ec3 ch\u00e2n kh\u00f4ng, th\u01b0\u1eddng ch\u00ednh x\u00e1c h\u01a1n so v\u1edbi trong m\u00f4i tr\u01b0\u1eddng kh\u00ed (lo\u1ea1i b\u1ecf c\u00e1c l\u1ed7i hi\u1ec7u ch\u1ec9nh chi\u1ebft su\u1ea5t c\u1ee7a kh\u00ed).<\/p>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">7. Ba quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn<\/h3>\n<div style=\"margin: 20px 0;\">\n<div style=\"background: #ffebee; padding: 20px; border-radius: 8px; margin-bottom: 15px;\">\n<h4 style=\"color: #c62828; margin-top: 0;\">\u2753 Quan ni\u1ec7m sai l\u1ea7m 1: \u201cT\u1ea7n s\u1ed1 c\u00e0ng cao c\u00e0ng t\u1ed1t \u2013 h\u00e3y ch\u1ecdn lo\u1ea1i 80 GHz \u0111\u1eaft nh\u1ea5t \u0111\u1ec3 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao\u201d<\/h4>\n<p style=\"margin-bottom: 0;\"><strong>\u274c Sai.<\/strong> C\u00e1c b\u1ec3 l\u00ean men, b\u1ec3 ch\u1ee9a n\u01b0\u1edbc th\u1ea3i \u0111en c\u1ee7a nh\u00e0 m\u00e1y gi\u1ea5y, b\u1ec3 s\u1ea3n xu\u1ea5t ch\u1ea5t t\u1ea9y r\u1eeda c\u00f3 nhi\u1ec1u b\u1ecdt s\u1ebd khi\u1ebfn t\u00edn hi\u1ec7u 80 GHz b\u1ecb h\u1ea5p th\u1ee5 b\u1edfi b\u1ecdt, th\u01b0\u1eddng xuy\u00ean b\u00e1o l\u1ed7i \u201cm\u1ea5t t\u00edn hi\u1ec7u\u201d. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, radar t\u1ea7n s\u1ed1 th\u1ea5p ho\u1eb7c radar s\u00f3ng d\u1eabn h\u01b0\u1edbng l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u1eaft nh\u1ea5t.<\/p>\n<\/div>\n<div style=\"background: #ffebee; padding: 20px; border-radius: 8px; margin-bottom: 15px;\">\n<h4 style=\"color: #c62828; margin-top: 0;\">\u2753 Quan ni\u1ec7m sai l\u1ea7m 2: \u201cT\u1ea7n s\u1ed1 th\u1ea5p c\u00f3 kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u m\u1ea1nh, v\u00ec v\u1eady n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi \u1ee9ng d\u1ee5ng\u201d<\/h4>\n<p style=\"margin-bottom: 0;\"><strong>\u274c Sai.<\/strong> G\u00f3c ch\u00f9m tia r\u1ed9ng \u1edf t\u1ea7n s\u1ed1 th\u1ea5p g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng v\u1ecdng \u00e2m gi\u1ea3 khi l\u1eafp \u0111\u1eb7t trong c\u00e1c b\u1ec3 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf; \u0111\u1ed9 ch\u00ednh x\u00e1c \u1edf t\u1ea7n s\u1ed1 th\u1ea5p (\u00b15-10mm) t\u1ea1o ra sai s\u1ed1 \u0111o trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao; \u0103ng-ten l\u1edbn \u1edf t\u1ea7n s\u1ed1 th\u1ea5p c\u00f3 th\u1ec3 kh\u00f4ng v\u1eeba v\u1edbi m\u1ed9t s\u1ed1 c\u1ed5ng l\u1eafp \u0111\u1eb7t.<\/p>\n<\/div>\n<div style=\"background: #ffebee; padding: 20px; border-radius: 8px;\">\n<h4 style=\"color: #c62828; margin-top: 0;\">\u2753 Quan ni\u1ec7m sai l\u1ea7m 3: \u201cT\u00edn hi\u1ec7u radar xuy\u00ean qua b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng \u0111\u1ec3 \u0111o kho\u1ea3ng c\u00e1ch \u0111\u1ebfn \u0111\u00e1y b\u1ec3\u201d<\/h4>\n<p style=\"margin-bottom: 0;\"><strong>\u274c Ho\u00e0n to\u00e0n sai.<\/strong> C\u1ea3m bi\u1ebfn \u0111o m\u1ee9c b\u1eb1ng radar \u0111o s\u1ef1 ph\u1ea3n x\u1ea1 b\u1ec1 m\u1eb7t, ch\u1ee9 kh\u00f4ng ph\u1ea3i s\u1ef1 xuy\u00ean th\u1ea5u. S\u00f3ng vi ba chi\u1ebfu v\u00e0o b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng v\u00e0 ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i \u2013 \u0111\u00f3 ch\u00ednh l\u00e0 ph\u00e9p \u0111o. N\u1ebfu c\u1ea7n \u0111o d\u01b0\u1edbi b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng, \u0111\u00f3 l\u00e0 nhi\u1ec7m v\u1ee5 c\u1ee7a c\u1ea3m bi\u1ebfn \u0111o m\u1ee9c si\u00eau \u00e2m ho\u1eb7c c\u1ea3m bi\u1ebfn \u0111o m\u1ee9c ki\u1ec3u d\u1ecbch chuy\u1ec3n.<\/p>\n<\/div>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 30px; margin-bottom: 15px;\">Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/h3>\n<div style=\"background: #e8f4f8; padding: 20px; border-radius: 8px; margin: 20px 0;\">\n<ul style=\"margin: 0; padding-left: 20px; line-height: 2;\">\n<li>M\u00e1y \u0111o m\u1ee9c b\u1eb1ng radar \u0111o \u0111\u1ed9 ph\u1ea3n x\u1ea1 c\u1ee7a ch\u1ea5t l\u1ecfng tr\u00ean b\u1ec1 m\u1eb7t, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ed9 xuy\u00ean th\u1ea5u.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 th\u1ea5p (6 GHz):<\/strong> B\u01b0\u1edbc s\u00f3ng d\u00e0i, kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u b\u1ecdt\/h\u01a1i n\u01b0\u1edbc m\u1ea1nh, th\u00edch h\u1ee3p cho c\u00e1c b\u1ec3 ch\u1ee9a l\u1edbn v\u00e0 nhi\u1ec1u b\u1ecdt, \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1ea5p h\u01a1n.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 cao (80 GHz):<\/strong> Ch\u00f9m tia c\u1ef1c h\u1eb9p, \u0111\u1ed9 ch\u00ednh x\u00e1c cao (\u00b11mm), l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ch m\u00e1u nh\u1ecf v\u00e0 c\u1ea5u tr\u00fac b\u00ean trong ph\u1ee9c t\u1ea1p, nh\u1ea1y c\u1ea3m v\u1edbi b\u1ecdt.<\/li>\n<li><strong>26 GHz:<\/strong> Lo\u1ea1i m\u00e1y chuy\u1ec3n ti\u1ebfp, \u0111\u1ed9 ch\u00ednh x\u00e1c trung b\u00ecnh, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i.<\/li>\n<li>T\u1ea7n s\u1ed1 80 GHz \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u \u2013 \u0111\u1ed1i v\u1edbi b\u1ecdt x\u1ed1p d\u00e0y, n\u00ean ch\u1ecdn t\u1ea7n s\u1ed1 th\u1ea5p ho\u1eb7c radar s\u00f3ng d\u1eabn h\u01b0\u1edbng.<\/li>\n<li>G\u00f3c ch\u00f9m tia h\u1eb9p h\u01a1n = \u00edt nhi\u1ec5u t\u1eeb th\u00e0nh v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn b\u00ean trong b\u1ec3 ch\u1ee9a, \u01b0u ti\u00ean t\u1ea7n s\u1ed1 cao cho c\u00e1c b\u1ec3 ch\u1ee9a nh\u1ecf.<\/li>\n<\/ul>\n<\/div>\n<div style=\"background: #f8f9fa; padding: 20px; border-radius: 8px; margin: 30px 0; text-align: center;\">\n<p style=\"margin: 0 0 10px 0; font-size: 16px; color: #666;\">\u0110\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt v\u00e0 h\u1ed7 tr\u1ee3 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111o m\u1ee9c b\u1eb1ng radar, vui l\u00f2ng li\u00ean h\u1ec7.<\/p>\n<p style=\"margin: 0; font-size: 14px;\">\ud83d\udce7 <a style=\"color: #1e5aa8; text-decoration: none;\" href=\"mailto:sales@yunrui-controls.com\">sales@yunrui-controls.com<\/a> | \ud83d\udcf1 <a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/wa.me\/8618710784030\">WhatsApp: +86 187 1078 4030<\/a><\/p>\n<\/div>\n<h3 style=\"color: #2c3e50; font-size: 22px; margin-top: 40px; margin-bottom: 15px;\">\u0110\u1ec1 xu\u1ea5t \u0111\u1ecdc<\/h3>\n<ul style=\"padding-left: 20px; line-height: 2;\">\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/19-common-liquid-level-gauges\/\">Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 19 lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u0111o m\u1ee9c ch\u1ea5t l\u1ecfng th\u00f4ng d\u1ee5ng: Nguy\u00ean l\u00fd, \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn.<\/a><\/li>\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/brands\/endress-hauser\/\">Gi\u1ea3i ph\u00e1p \u0111o m\u1ee9c c\u1ee7a Endress+Hauser (E+H): Radar, si\u00eau \u00e2m v\u00e0 s\u00f3ng d\u1eabn h\u01b0\u1edbng<\/a><\/li>\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/eh-fmu30-aaheaaggf-ultrasonic-level-transmitter\/\">Gi\u1ea3i quy\u1ebft nh\u1eefng r\u1eafc r\u1ed1i trong vi\u1ec7c \u0111o m\u1ee9c ch\u1ea5t l\u1ecfng trong b\u1ed3n ch\u1ee9a: B\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u \u0111o m\u1ee9c si\u00eau \u00e2m E+H FMU30-AAHEAAGGF<\/a><\/li>\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/understanding-gauge-and-absolute-pressure\/\">Hi\u1ec3u v\u1ec1 \u00e1p su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 \u00e1p su\u1ea5t tuy\u1ec7t \u0111\u1ed1i: H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n<\/a><\/li>\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/rosemount-3051-pressure-transmitter-selection-guide\/\">H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn b\u1ed9 truy\u1ec1n \u00e1p su\u1ea5t Rosemount 3051: Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/a><\/li>\n<li><a style=\"color: #1e5aa8; text-decoration: none;\" href=\"https:\/\/www.yunrui-controls.com\/vi\/endresshauser-cerabar-pmp71b-1tx53-101\/\">C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t k\u1ef9 thu\u1eadt s\u1ed1 Endress+Hauser Cerabar PMP71B-1TX53\/101: Ti\u00eau chu\u1ea9n m\u1edbi cho \u0111o l\u01b0\u1eddng quy tr\u00ecnh c\u00f4ng nghi\u1ec7p.<\/a><\/li>\n<\/ul>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>&nbsp; Wrong frequency choice means signal loss. Understanding the principles is the first step to selecting the right model. 1. How Radar Level Transmitters Measure Level Radar level transmitters operate on the Time of Flight (TOF) principle: microwaves are emitted from the antenna, reflect off the liquid surface, and return to the transmitter. By measuring [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8397,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[384,1],"tags":[548,549,550,551,411,415,410,285],"class_list":["post-8390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-blogs","tag-radar-level-transmitter","tag-level-measurement","tag-80ghz-radar","tag-6ghz-radar","tag-process-control","tag-eh","tag-industrial-instrumentation","tag-endresshauser"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Radar Level Transmitter Frequency : 6GHz vs 26GHz vs 80GHz<\/title>\n<meta name=\"description\" content=\"Compare low vs high frequency radar level transmitters. Learn which frequency penetrates foam better and how to select 6GHz, 26GHz, or 80GHz for your application.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yunrui-controls.com\/vi\/radar-level-transmitter-frequency-guide\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Radar Level Transmitter: High vs Low Frequency \u2013 Which Has Better Penetration?\" \/>\n<meta property=\"og:description\" content=\"Compare low vs high frequency radar level transmitters. Learn which frequency penetrates foam better and how to select 6GHz, 26GHz, or 80GHz for your application.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.yunrui-controls.com\/vi\/radar-level-transmitter-frequency-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Fisher, E+H &amp; Rosemount Supplier from China | 100% Original | YUNRUI\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-10T17:32:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.yunrui-controls.com\/wp-content\/uploads\/2026\/06\/0611.png\" \/>\n\t<meta property=\"og:image:width\" content=\"240\" \/>\n\t<meta property=\"og:image:height\" content=\"321\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"sales@yunrui-controls.com\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"sales@yunrui-controls.com\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/\"},\"author\":{\"name\":\"sales@yunrui-controls.com\",\"@id\":\"https:\/\/www.yunrui-controls.com\/#\/schema\/person\/b9b385704b61e72ea9254fc3b56001af\"},\"headline\":\"Radar Level Transmitter: High vs Low Frequency \u2013 Which Has Better Penetration?\",\"datePublished\":\"2026-06-10T17:32:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/\"},\"wordCount\":1456,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.yunrui-controls.com\/wp-content\/uploads\/2026\/06\/0611.png\",\"keywords\":[\"radar level transmitter\",\"level measurement\",\"80GHz radar\",\"6GHz radar\",\"Process Control\",\"E+H\",\"Industrial Instrumentation\",\"Endress+Hauser\"],\"articleSection\":[\"News\",\"Blogs\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/\",\"url\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/\",\"name\":\"Radar Level Transmitter Frequency : 6GHz vs 26GHz vs 80GHz\",\"isPartOf\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/radar-level-transmitter-frequency-guide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.yunrui-controls.com\/wp-content\/uploads\/2026\/06\/0611.png\",\"datePublished\":\"2026-06-10T17:32:48+00:00\",\"description\":\"Compare low vs high frequency radar level transmitters. 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