{"id":6166,"date":"2026-02-08T18:40:36","date_gmt":"2026-02-08T18:40:36","guid":{"rendered":"https:\/\/yunrui-controls.com\/?post_type=products&#038;p=6166"},"modified":"2026-03-29T16:23:34","modified_gmt":"2026-03-29T16:23:34","slug":"endresshauser-deltabar-fmd77","status":"publish","type":"products","link":"https:\/\/www.yunrui-controls.com\/ja\/products\/endresshauser-deltabar-fmd77\/","title":{"rendered":"\u30a8\u30f3\u30c9\u30ec\u30b9\u30cf\u30a6\u30b6\u30fc Deltabar FMD77 | \u30d5\u30ec\u30ad\u30b7\u30d6\u30eb\u30c0\u30a4\u30e4\u30d5\u30e9\u30e0\u30b7\u30fc\u30eb\u69cb\u6210\u306b\u3088\u308b\u5dee\u5727\u6e2c\u5b9a\uff5c\u30a8\u30f3\u30c9\u30ec\u30b9\u30cf\u30a6\u30b6\u30fc\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc"},"content":{"rendered":"<h3 data-path-to-node=\"2\">\u91cd\u8981\u306a\u6280\u8853\u7684\u5229\u70b9<\/h3>\n<ul data-path-to-node=\"3\">\n<li>\n<p data-path-to-node=\"3,0,0\">Optimized for Pressurized Tanks: The FMD77 is ideal for vessels where the transmitter can be bolted directly to the lower flange. The capillary on the low-pressure side then compensates for the head pressure at the top of the tank, providing an accurate level reading without the need for complex impulse piping.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"3,1,0\"><span class=\"citation-907 citation-end-907\">TempC Membrane Technology: Like the FMD78, this device features the TempC Membrane.<\/span> This advanced technology significantly reduces measurement errors caused by varying process temperatures or ambient weather conditions, ensuring a stable zero point and high precision even during rapid temperature changes.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"3,2,0\">Extreme Temperature Range: The diaphragm seal system allows the FMD77 to operate in processes ranging from -70\u00b0C to +400\u00b0C. By isolating the sensor electronics from these extreme temperatures, the device maintains long-term reliability and accuracy.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"3,3,0\">High Safety Standards (SIL3): Designed for high-integrity safety loops, the FMD77 is suitable for SIL2 applications and SIL3 in redundant setups. <span class=\"citation-906 citation-end-906\">The gas-tight feedthrough provides an essential barrier between the process and the electronics, protecting the plant and personnel.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"3,4,0\"><span class=\"citation-905 citation-end-905\">HistoROM Data Management: All device and process parameters are stored in the HistoROM data module.<\/span> This makes &#8220;plug-and-play&#8221; maintenance possible, as settings can be automatically transferred to a replacement electronics module, drastically reducing downtime.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"3,5,0\"><span class=\"citation-904 citation-end-904\">Modular Serviceability: The sensor, electronics, and display are separate modules.<\/span> If one component fails, it can be replaced individually without needing to buy a completely new instrument, lowering the total cost of ownership.<\/p>\n<\/li>\n<\/ul>\n<h4 data-path-to-node=\"4\">\u6280\u8853\u6027\u80fd\u30de\u30c8\u30ea\u30c3\u30af\u30b9<\/h4>\n<table data-path-to-node=\"5\">\n<thead>\n<tr>\n<td><strong>\u7279\u5fb4<\/strong><\/td>\n<td><strong>\u8a73\u7d30<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"5,1,0,0\">\u6e2c\u5b9a\u539f\u7406<\/span><\/td>\n<td><span data-path-to-node=\"5,1,1,0\">Differential Pressure (Metal sensor with Diaphragm Seals)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"5,2,0,0\">\u30b7\u30b9\u30c6\u30e0\u7cbe\u5ea6<\/span><\/td>\n<td><span data-path-to-node=\"5,2,1,0\">\u00b10.075%<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"5,3,0,0\">\u30d7\u30ed\u30bb\u30b9\u6e29\u5ea6<\/span><\/td>\n<td><span data-path-to-node=\"5,3,1,0\">-70 to +400\u00b0C (-94 to +752\u00b0F)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"5,4,0,0\"><span class=\"citation-903 citation-end-903\">\u6e2c\u5b9a\u7bc4\u56f2<\/span><\/span><\/td>\n<td><span data-path-to-node=\"5,4,1,0\"><span class=\"citation-902 citation-end-902\">100 mbar to 16 bar (1.5 to 240 psi)<\/span><\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"5,5,0,0\">\u5b89\u5168\u8a55\u4fa1<\/span><\/td>\n<td><span data-path-to-node=\"5,5,1,0\">SIL2\/3 (IEC 61508) \/ WHG Overfill Prevention<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"5,6,0,0\">\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3<\/span><\/td>\n<td><span data-path-to-node=\"5,6,1,0\">HART\u3001PROFIBUS PA\u3001FOUNDATION Fieldbus<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5 data-path-to-node=\"6\">\u4e3b\u306a\u7528\u9014<\/h5>\n<ul data-path-to-node=\"7\">\n<li>\n<p data-path-to-node=\"7,0,0\">Pressurized Liquid Level: Measuring the level, volume, or mass of liquids in closed tanks where the transmitter is flange-mounted at the bottom.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,1,0\">Distillation Columns: Reliable level monitoring in refinery or chemical columns where the process medium is at high temperatures.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,2,0\">Corrosive Media: Using specialized membrane materials like Tantalum or Hastelloy to measure aggressive chemicals that would destroy standard stainless steel sensors.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,3,0\">Vacuum Applications: The FMD77 is designed to handle measurements in vessels under vacuum, where traditional impulse lines would struggle with gas bubbles or fluid vaporization.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,4,0\">Hygienic Level Measurement: Monitoring levels in food and pharmaceutical tanks using flush-mounted diaphragm seals that meet EHEDG or 3-A standards.<\/p>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The Deltabar FMD77 is a specialized differential pressure transmitter designed primarily for level measurement in the process industry. It features a unique asymmetric design: it typically uses a direct-mount diaphragm seal on the high-pressure side (HP) and a capillary-connected diaphragm seal on the low-pressure side (LP), or a one-sided diaphragm seal for open tanks. This configuration is perfect for pressurized vessels where the transmitter is mounted directly to the bottom process connection, while the top connection is reached via a flexible capillary.<\/p>","protected":false},"author":1,"featured_media":6167,"parent":0,"menu_order":271,"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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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"tags":[335],"brands":[115,283],"model_series":[],"industries":[54,53],"product_cat":[95,92],"class_list":["post-6166","products","type-products","status-publish","format-standard","has-post-thumbnail","hentry","tag-endresshauser-supplier","brands-endress-hauser","brands-flow-measurement","industries-chemical-petrochemical","industries-oil-gas","product_cat-differential-pressure-transmitters","product_cat-transmitters"],"acf":{"output":"","accuracy":"","range":"","power":"","materials":"","fluid":"Silicone oil,\r\nInert oil,\r\nVegetable oil\r\nLow- temperature oil\r\nHigh- temperature oil","mounting":"","communication_protocol":"4...20 mA HART\r\nPROFIBUS PA\r\nFOUNDATION Fieldbus","process_media_density":"","viscosity":"","operating_pressure":"","operating_temperature":"","safety":"SIL","diagnostics":"","input":"","housing":"","displayinterface":"","calibration_options":"","certificationsapprovals":"ATEX, FM, CSA, CSA C\/US, IEC Ex, INMETRO, NEPSI, EAC, UK Ex","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":"Differential pressure","characteristic":"Digital transmitter with metallic measuring diaphragms, one side with diaphragm seal\r\nModular transmitter\r\nLong-term stability\r\nSecondary process barrier\r\nenhanced saftey via self diagnostic functions","supply_voltage":"4...20mA HART\r\n10,5...45V DC (Non Ex):\r\nEx ia: 10,5...30V DC\r\nPROFIBUS PA:\r\n9...32 V DC (Non Ex)\r\nFOUNDATION Fieldbus:\r\n9...32 V DC (Non Ex)","reference_accuracy":"0,075% + influence of diaphragm seal","long_term_stability":"0.08 % of URL\/ year\r\n0.14 % of URL\/ 5 years\r\n0.27 % of URL\/ 10 years","process_temperature":"-40\u00b0C...400\u00b0C\r\n(-40\u00b0F...752\u00b0F)","ambient_temperature":"-50\u00b0C...85\u00b0C\r\n(-58\u00b0F...185\u00b0F)","measuring_cell":"100 mbar...16 bar\r\n(40 inH20...240 psi)","smallest_calibratable_span":"5 mbar (0.075 psi)","vacuum_resistance":"50 mbar (0.73 psi)","max_turn_down":"100:1","max_overpressure_limit":"160 bar\r\n(2400 psi)","process_connection":"Low pressure side:\r\n1\/4-18NPT\r\nRC1\/4\"\r\nHigh pressure side:\r\nFlanges (DIN, ASME, JIS)","process_connection_hygienic":"","material_process_membrane":"316L, AlloyC,\r\nTantal,\r\nGold-Rhodium,\r\nPTFE","material_gasket":"None, diaphragm seal welded","material_housing":"316L, Die-cast aluminum","design_approvals":"NACE MR0175\r\nEN10204-3.1","hygienic_approvals":"","marine_approvals":"","drinking_water_approvals":"","datasheet":6153,"live_photos":"","available_certificates":"","available_logistics":"","configured_models":null},"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>Endress+Hauser Deltabar FMD77 | Ready to Ship | Quote Now<\/title>\n<meta name=\"description\" content=\"Searching for a trusted Endress+Hauser Deltabar FMD77 supplier? 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