<\/span><\/h2>\n\n\n\n\u0110i\u1ec3m m\u1ea1nh l\u1edbn nh\u1ea5t c\u1ee7a nhi\u1ec7t k\u1ebf bimetal l\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 \u0111o th\u00f4ng qua s\u1ef1 l\u1ec7ch ho\u1eb7c dao \u0111\u1ed9ng c\u1ee7a kim ch\u1ec9 th\u1ecb. Nhi\u1ec7t k\u1ebf bimetal ph\u1ea3i ch\u1edd kim lo\u1ea1i b\u00ean trong gi\u00e3n n\u1edf \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9, do \u0111\u00f3 th\u1eddi gian ph\u1ea3n h\u1ed3i ch\u1eadm h\u01a1n. Th\u00e9p kh\u00f4ng g\u1ec9 ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi v\u00e0 \u1edf c\u00e1c n\u01a1i kh\u00e1c. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh l\u00e0 t\u1eeb -70\u00b0C \u0111\u1ebfn 600\u00b0C.<\/p>\n\n\n\n
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n\n![\"\"](\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/SJ-Gauge_Bottom_mount_thermometer_Large-300x250.jpg\")
Thermometer hai kim lo\u1ea1i l\u1eafp d\u01b0\u1edbi<\/figcaption><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/SJ-Gauge-thermometer-angle-adjustabled-L-300x250.jpg\")
Thermometer kim lo\u1ea1i k\u00e9p c\u00f3 g\u00f3c \u0111i\u1ec1u ch\u1ec9nh<\/figcaption><\/figure>\n<\/figure>\n\n\n\nHai t\u1ea5m kim lo\u1ea1i kh\u00e1c nhau \u0111\u01b0\u1ee3c g\u1eafn ch\u1eb7t v\u00e0o nhau v\u00e0 u\u1ed1n th\u00e0nh h\u00ecnh xo\u1eafn \u1ed1c. Nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111o d\u1ef1a tr\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a kim lo\u1ea1i. G\u1eafn m\u1ed9t \u0111\u1ea7u c\u1ee7a xo\u1eafn \u1ed1c kim lo\u1ea1i hai l\u1edbp v\u00e0o \u0111\u1ea7u c\u1ed1 \u0111\u1ecbnh v\u00e0 \u0111\u1ea7u c\u00f2n l\u1ea1i v\u00e0o kim ch\u1ec9. Khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i, t\u1ea5m kim lo\u1ea1i s\u1ebd gi\u00e3n n\u1edf ho\u1eb7c co l\u1ea1i, l\u00e0m cong kim lo\u1ea1i, t\u1eeb \u0111\u00f3 l\u00e0m kim ch\u1ec9 quay.<\/p>\n\n\n\n
<\/span>3. Nhi\u1ec7t k\u1ebf gi\u00e3n n\u1edf kh\u00ed<\/span><\/h2>\n\n\n\nThermometers \u0111o nhi\u1ec7t \u0111\u1ed9 b\u1eb1ng s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a kh\u00ed c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 ngay l\u1eadp t\u1ee9c v\u00e0 c\u00f3 th\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 \u1edf kho\u1ea3ng c\u00e1ch xa (l\u00ean \u0111\u1ebfn 60 m) th\u00f4ng qua \u1ed1ng mao d\u1eabn. Ch\u00fang ph\u00f9 h\u1ee3p cho c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c. Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 kh\u00ed s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng, do \u0111\u00f3 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng s\u1ebd khi\u1ebfn kim ch\u1ec9 th\u1ecb rung l\u1eafc ho\u1eb7c d\u1ecbch chuy\u1ec3n. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh l\u00e0 t\u1eeb -200\u00b0C \u0111\u1ebfn 700\u00b0C.<\/p>\n\n\n\n
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n\n![\"\"](\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/SJ-Gauge-expansion-thermometer-gas-actuated-1024x853.jpg\")
Thermometer gi\u00e3n n\u1edf<\/figcaption><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/12\/SJ-Gauge-expansion-thermometer-capillary-1024x853.jpg\")
Thermometer gi\u00e3n n\u1edf mao qu\u1ea3n<\/figcaption><\/figure>\n<\/figure>\n\n\n\nNguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t k\u1ebf gi\u00e3n n\u1edf kh\u00ed l\u00e0 s\u1eed d\u1ee5ng kh\u00ed \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9. Kh\u00ed \u0111\u01b0\u1ee3c b\u01a1m v\u00e0o \u1ed1ng mao d\u1eabn, v\u00e0 khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i, \u00e1p su\u1ea5t kh\u00ed trong \u1ed1ng s\u1ebd thay \u0111\u1ed5i. \u00c1p su\u1ea5t n\u00e0y l\u00e0m bi\u1ebfn d\u1ea1ng \u1ed1ng Bourdon v\u00e0 \u0111\u1ea9y kim ch\u1ec9 th\u1ecb \u0111\u1ec3 hi\u1ec3n th\u1ecb nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n
<\/span>4. Nhi\u1ec7t k\u1ebf c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n<\/span><\/h2>\n\n\n\nC\u00e1c nhi\u1ec7t k\u1ebf c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 d\u1ea3i \u0111o r\u1ed9ng. D\u1ea5u hi\u1ec7u \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh, do \u0111\u00f3 ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p. Tuy nhi\u00ean, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u trong d\u1ea3i \u0111o m\u1ea5t nhi\u1ec1u th\u1eddi gian v\u00e0 ph\u1ee9c t\u1ea1p, n\u00ean ch\u00fang kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111o c\u00e1c thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 nh\u1ecf. Ch\u00fang d\u1ec5 b\u1ecb \u0103n m\u00f2n v\u00e0 m\u00e0i m\u00f2n, do \u0111\u00f3 c\u1ea7n thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh l\u00e0 t\u1eeb -200\u00b0C \u0111\u1ebfn 2500\u00b0C (c\u00e1c v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t kh\u00e1c nhau c\u00f3 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau).<\/p>\n\n\n\n
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n![\"\"](\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/07_SJ_thermocouple_thermometer.png\")
Thermocouple nhi\u1ec7t k\u1ebf<\/strong><\/figcaption><\/figure>\n\n\n\nNguy\u00ean l\u00fd ch\u00ednh c\u1ee7a nhi\u1ec7t k\u1ebf nhi\u1ec7t \u0111i\u1ec7n l\u00e0 hi\u1ec7u \u1ee9ng nhi\u1ec7t \u0111i\u1ec7n, bao g\u1ed3m hai d\u00e2y d\u1eabn kim lo\u1ea1i c\u00f3 t\u00ednh ch\u1ea5t kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ea1ch \u0111i\u1ec7n, sao cho nhi\u1ec7t \u0111\u1ed9 t\u1ea1i \u0111i\u1ec3m n\u1ed1i c\u1ee7a hai kim lo\u1ea1i l\u00e0 kh\u00e1c nhau. S\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 n\u00e0y s\u1ebd t\u1ea1o ra m\u1ed9t l\u1ef1c \u0111i\u1ec7n nhi\u1ec7t, sinh ra m\u1ed9t \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9. Khi v\u1eadt li\u1ec7u c\u1ee7a kim lo\u1ea1i \u1edf c\u1ea3 hai \u0111\u1ea7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c \u0111i\u1ec7n nhi\u1ec7t li\u00ean quan \u0111\u1ebfn s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 t\u1ea1i hai \u0111i\u1ec3m n\u1ed1i. Hai \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u2014 \u0111\u1ea7u \u0111o v\u00e0 \u0111\u1ea7u tham chi\u1ebfu (ho\u1eb7c \u0111\u1ea7u c\u1ed1 \u0111\u1ecbnh). \u0110\u1ea7u tham chi\u1ebfu th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf 0\u00b0C.<\/p>\n\n\n\n
<\/span>5. C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n tr\u1edf (RTD)<\/span><\/h2>\n\n\n\nC\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n tr\u1edf (RTD) c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 d\u1ea3i \u0111o r\u1ed9ng. Ch\u00fang c\u00f3 \u0111\u1ed9 b\u1ec1n cao, \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111o nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 ch\u1ebf bi\u1ebfn kim lo\u1ea1i, n\u0103ng l\u01b0\u1ee3ng, l\u1ecdc d\u1ea7u v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. Tuy nhi\u00ean, ch\u00fang d\u1ec5 b\u1ecb \u0103n m\u00f2n, c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u1ea5p v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n trong m\u00f4i tr\u01b0\u1eddng kh\u00f4 r\u00e1o. D\u1ea3i nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh l\u00e0 t\u1eeb -200\u00b0C \u0111\u1ebfn 600\u00b0C.<\/p>\n\n\n\n
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n![\"\"](\"https:\/\/sj-gauge.com\/wp-content\/uploads\/2025\/12\/08_SJ_resistance_thermometer_RTD.png\")
C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n tr\u1edf (RTD)<\/figcaption><\/figure>\n\n\n\nNguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n tr\u1edf (RTD) l\u00e0 \u0111o \u0111i\u1ec7n tr\u1edf. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t d\u00e2y d\u1eabn \u0111i\u1ec7n b\u1eb1ng kim lo\u1ea1i tinh khi\u1ebft, gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf s\u1ebd thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9, t\u1eeb \u0111\u00f3 \u0111o \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Kim lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 b\u1ea1ch kim (PT), c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 oxy h\u00f3a xu\u1ea5t s\u1eafc, c\u00f9ng v\u1edbi \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n cao v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh. Pt100 l\u00e0 lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t.<\/p>\n\n\n\n
Sau khi \u0111\u1ecdc v\u1ec1 n\u0103m lo\u1ea1i nhi\u1ec7t k\u1ebf c\u00f4ng nghi\u1ec7p n\u00e0y, b\u1ea1n \u0111\u00e3 c\u00f3 c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng h\u01a1n v\u1ec1 lo\u1ea1i nhi\u1ec7t k\u1ebf ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh ch\u01b0a? H\u00e3y nh\u1ea5p v\u00e0o li\u00ean k\u1ebft b\u00ean d\u01b0\u1edbi \u0111\u1ec3 \u0111\u1ecdc th\u00eam v\u00e0 t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i nhi\u1ec7t k\u1ebf!<\/p>","protected":false},"excerpt":{"rendered":"
C\u00f3 nhi\u1ec1u lo\u1ea1i nhi\u1ec7t k\u1ebf kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, v\u1edbi c\u00e1c nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng kh\u00e1c nhau. H\u00e3y theo d\u00f5i ch\u00fang t\u00f4i \u0111\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c nguy\u00ean l\u00fd v\u00e0 lo\u1ea1i nhi\u1ec7t k\u1ebf n\u00e0y. 1. Nhi\u1ec7t k\u1ebf th\u1ee7y tinh Nhi\u1ec7t k\u1ebf th\u1ee7y tinh c\u00f3 c\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n v\u00e0 chi ph\u00ed th\u1ea5p. Kh\u00f4ng ch\u1ec9 ph\u1ed5 bi\u1ebfn trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, b\u1ea1n s\u1ebd th\u1ea5y ch\u00fang c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. [\u2026]<\/p>","protected":false},"author":2,"featured_media":2388,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[72],"class_list":["post-2378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-temperature"],"blocksy_meta":[],"acf":[],"yoast_head":"\n
Types of Industrial Thermometers - SJ Gauge | Pressure Gauges, Thermometers & Pressure Sensors<\/title>\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.sj-gauge.com\/vi\/industrial-thermometers-types\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Types of Industrial Thermometers\" \/>\n<meta property=\"og:description\" content=\"There are many different types of thermometers for industrial applications, with different working principles and uses. Follow us to learn about these principles and types of thermometers. 1.Glass Thermometer Glass thermometers have a simple structure and low cost. Not only common in daily life, you will find these are also widely used in industrial applications. 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