{"id":3330,"date":"2026-01-16T17:37:50","date_gmt":"2026-01-16T17:37:50","guid":{"rendered":"https:\/\/yunrui-controls.com\/?post_type=products&#038;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\/ms\/products\/rosemount-644\/","title":{"rendered":"Pemancar Suhu Rosemount 644 Baharu Asli \uff5cRosemount 644"},"content":{"rendered":"<div class=\"col-xs-12 col-sm-4 col-md-3\">\n<h4>Ciri-ciri<\/h4>\n<\/div>\n<div id=\"featuresButton-726575\" class=\"col-xs-12 col-sm-8 col-md-9\"><\/div>\n<div class=\"col-xs-12\">\n<ul>\n<li>Pemancar suhu yang sangat versatil tersedia dalam protokol HART\u2122, FOUNDATION\u2122 Fieldbus atau PROFIBUS\u2122<\/li>\n<li>Konfigurasi pelekap yang pelbagai termasuk pelekap kepala, medan atau rel dengan banyak pilihan penutup<\/li>\n<li>Pilihan LOI menghapuskan keperluan untuk alat konfigurasi khas (iaitu komunikator lapangan) untuk kemudahan penggunaan<\/li>\n<li>Pemadanan sensor pemancar dengan pemalar Callendar-Van Dusen mengurangkan ralat pengukuran keseluruhan<\/li>\n<li>Keupayaan Hot Backup\u2122 dan amaran hanyutan sensor dengan sensor berganda memastikan integriti pengukuran<\/li>\n<li>Diagnostik degradasi termogandingan memantau kesihatan termogandingan untuk mengesan degradasi sebelum kegagalan<\/li>\n<li>Penjejakan suhu minimum dan maksimum memerhatikan suhu ekstrem untuk penyelesaian masalah yang mudah<\/li>\n<li>Papan pemuka peranti menyediakan antara muka yang mudah untuk konfigurasi peranti yang dipermudahkan dan penyelesaian masalah diagnostik<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>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.<br \/>\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 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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":"<!-- 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