{"id":3330,"date":"2026-01-16T17:37:50","date_gmt":"2026-01-16T17:37:50","guid":{"rendered":"https:\/\/yunrui-controls.com\/?post_type=products&p=3330"},"modified":"2026-03-29T16:09:15","modified_gmt":"2026-03-29T16:09:15","slug":"rosemount-644","status":"publish","type":"products","link":"https:\/\/www.yunrui-controls.com\/th\/products\/rosemount-644\/","title":{"rendered":"\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e2a\u0e48\u0e07\u0e2a\u0e31\u0e0d\u0e0d\u0e32\u0e13\u0e2d\u0e38\u0e13\u0e2b\u0e20\u0e39\u0e21\u0e34 Rosemount 644 \u0e02\u0e2d\u0e07\u0e41\u0e17\u0e49 \u0e43\u0e2b\u0e21\u0e48\u0e40\u0e2d\u0e35\u0e48\u0e22\u0e21 \uff5cRosemount 644"},"content":{"rendered":"
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\u0e04\u0e38\u0e13\u0e2a\u0e21\u0e1a\u0e31\u0e15\u0e34<\/h4>\n<\/div>\n
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  • \u0e15\u0e31\u0e27\u0e40\u0e25\u0e37\u0e2d\u0e01 LOI \u0e0a\u0e48\u0e27\u0e22\u0e25\u0e14\u0e04\u0e27\u0e32\u0e21\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e43\u0e19\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e21\u0e37\u0e2d\u0e01\u0e32\u0e23\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e04\u0e48\u0e32\u0e1e\u0e34\u0e40\u0e28\u0e29 (\u0e40\u0e0a\u0e48\u0e19 \u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e2a\u0e37\u0e48\u0e2d\u0e2a\u0e32\u0e23\u0e20\u0e32\u0e04\u0e2a\u0e19\u0e32\u0e21) \u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e04\u0e27\u0e32\u0e21\u0e2a\u0e30\u0e14\u0e27\u0e01\u0e43\u0e19\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19<\/li>\n
  • \u0e01\u0e32\u0e23\u0e08\u0e31\u0e1a\u0e04\u0e39\u0e48\u0e15\u0e31\u0e27\u0e2a\u0e48\u0e07\u0e2a\u0e31\u0e0d\u0e0d\u0e32\u0e13\u0e41\u0e25\u0e30\u0e40\u0e0b\u0e47\u0e19\u0e40\u0e0b\u0e2d\u0e23\u0e4c\u0e42\u0e14\u0e22\u0e43\u0e0a\u0e49\u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48\u0e02\u0e2d\u0e07 Callendar-Van Dusen \u0e0a\u0e48\u0e27\u0e22\u0e25\u0e14\u0e02\u0e49\u0e2d\u0e1c\u0e34\u0e14\u0e1e\u0e25\u0e32\u0e14\u0e43\u0e19\u0e01\u0e32\u0e23\u0e27\u0e31\u0e14\u0e42\u0e14\u0e22\u0e23\u0e27\u0e21<\/li>\n
  • \u0e1f\u0e31\u0e07\u0e01\u0e4c\u0e0a\u0e31\u0e19 Hot Backup\u2122 \u0e41\u0e25\u0e30\u0e01\u0e32\u0e23\u0e41\u0e08\u0e49\u0e07\u0e40\u0e15\u0e37\u0e2d\u0e19\u0e01\u0e32\u0e23\u0e40\u0e1a\u0e35\u0e48\u0e22\u0e07\u0e40\u0e1a\u0e19\u0e02\u0e2d\u0e07\u0e40\u0e0b\u0e47\u0e19\u0e40\u0e0b\u0e2d\u0e23\u0e4c\u0e14\u0e49\u0e27\u0e22\u0e40\u0e0b\u0e47\u0e19\u0e40\u0e0b\u0e2d\u0e23\u0e4c\u0e04\u0e39\u0e48 \u0e0a\u0e48\u0e27\u0e22\u0e43\u0e2b\u0e49\u0e21\u0e31\u0e48\u0e19\u0e43\u0e08\u0e44\u0e14\u0e49\u0e16\u0e36\u0e07\u0e04\u0e27\u0e32\u0e21\u0e16\u0e39\u0e01\u0e15\u0e49\u0e2d\u0e07\u0e41\u0e21\u0e48\u0e19\u0e22\u0e33\u0e02\u0e2d\u0e07\u0e01\u0e32\u0e23\u0e27\u0e31\u0e14<\/li>\n
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  • \u0e41\u0e1c\u0e07\u0e04\u0e27\u0e1a\u0e04\u0e38\u0e21\u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e21\u0e35\u0e2d\u0e34\u0e19\u0e40\u0e17\u0e2d\u0e23\u0e4c\u0e40\u0e1f\u0e0b\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19\u0e07\u0e48\u0e32\u0e22 \u0e0a\u0e48\u0e27\u0e22\u0e43\u0e2b\u0e49\u0e01\u0e32\u0e23\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e04\u0e48\u0e32\u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e41\u0e25\u0e30\u0e01\u0e32\u0e23\u0e41\u0e01\u0e49\u0e44\u0e02\u0e1b\u0e31\u0e0d\u0e2b\u0e32\u0e17\u0e33\u0e44\u0e14\u0e49\u0e07\u0e48\u0e32\u0e22\u0e02\u0e36\u0e49\u0e19<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"

    The Rosemount 644 is engineered for maximum versatility across diverse industrial environments. Supporting HART\u2122, FOUNDATION\u2122 Fieldbus, and PROFIBUS\u2122 protocols, it offers ultimate flexibility with head, field, or rail mount options and a wide selection of specialized enclosures.
    \nStreamline your field operations with the integrated Local Operator Interface (LOI), allowing for tool-free configuration updates directly at the device. To ensure process integrity, the 644 features advanced diagnostic suites, including Hot Backup\u2122 capability, sensor drift alerts, and thermocouple degradation monitoring.<\/p>","protected":false},"author":1,"featured_media":3337,"parent":0,"menu_order":789,"comment_status":"open","ping_status":"open","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 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protocol","accuracy":"","range":"","power":"","materials":"","fluid":"","mounting":"","communication_protocol":"","process_media_density":"","viscosity":"","operating_pressure":"","operating_temperature":"","safety":"","diagnostics":"Basic diagnostics, Hot Backup\u2122 capability, sensor drift alert, thermocouple degradation, min\/max tracking","input":"Dual and single sensor capability with universal sensor inputs (RTD, T\/C, mV, ohms)","housing":"Field mount, DIN A head mount or rail mount","displayinterface":"LCD Display, LCD Display with Local Operator Interface (LOI), or LED","calibration_options":"Transmitter-sensor matching (Callendar-Van Dusen constants), 5-point calibration","certificationsapprovals":"SIL 2\/3 certified to IEC 61508 by an independent 3rd party, hazardous location, marine type, see full specs for complete list of certifications","turndown":"","flange_options":"","line_size":"","interchangeability":"","compatibility":"","enclosure_rating":"","transmitter_coil_drive_current":"","conductivity_limits":"","line_power_fuses":"","switch-on_current":"","measurement_types":"","stability_":"","response_time":"","burst_pressure_absolute":"","specification_conformance":"","rangeability":"","over-pressure_effect":"","measuring_principle":"","characteristic":"","supply_voltage":"","reference_accuracy":"","long_term_stability":"","process_temperature":"","ambient_temperature":"","measuring_cell":"","smallest_calibratable_span":"","vacuum_resistance":"","max_turn_down":"","max_overpressure_limit":"","process_connection":"","process_connection_hygienic":"","material_process_membrane":"","material_gasket":"","material_housing":"","design_approvals":"","hygienic_approvals":"","marine_approvals":"","drinking_water_approvals":"","datasheet":3342,"live_photos":"","available_certificates":[1823,1822,1821],"available_logistics":"","configured_models":null},"yoast_head":"\nRosemount 644 Temperature Transmitter | High Quality & Best Price<\/title>\n<meta name=\"description\" content=\"Upgrade your systems with the genuine Rosemount 644 Temperature Transmitter. We guarantee competitive wholesale pricing and swift global delivery from o...\" \/>\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\/th\/products\/rosemount-644\/\" \/>\n<meta property=\"og:locale\" content=\"th_TH\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Original Brand New Rosemount 644 Temperature Transmitter \uff5cRosemount 644\" \/>\n<meta property=\"og:description\" content=\"Upgrade your systems with the genuine Rosemount 644 Temperature Transmitter. We guarantee competitive wholesale pricing and swift global delivery from o...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.yunrui-controls.com\/th\/products\/rosemount-644\/\" \/>\n<meta property=\"og:site_name\" content=\"Fisher, E+H & Rosemount Supplier from China | 100% Original | YUNRUI\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-29T16:09:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.yunrui-controls.com\/wp-content\/uploads\/2026\/01\/original-brand-new-rosemount-644-temperature-transmitter-\uff5crosemount-644-from-china-supplier-yunrui.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"370\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.yunrui-controls.com\/products\/rosemount-644\/\",\"url\":\"https:\/\/www.yunrui-controls.com\/products\/rosemount-644\/\",\"name\":\"Rosemount 644 Temperature Transmitter | High Quality & Best Price\",\"isPartOf\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/products\/rosemount-644\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.yunrui-controls.com\/products\/rosemount-644\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.yunrui-controls.com\/wp-content\/uploads\/2026\/01\/original-brand-new-rosemount-644-temperature-transmitter-\uff5crosemount-644-from-china-supplier-yunrui.jpg\",\"datePublished\":\"2026-01-16T17:37:50+00:00\",\"dateModified\":\"2026-03-29T16:09:15+00:00\",\"description\":\"Upgrade your systems with the genuine Rosemount 644 Temperature Transmitter. 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