{"id":5588,"date":"2015-04-29T16:38:26","date_gmt":"2015-04-29T15:38:26","guid":{"rendered":"https:\/\/www.ultraflux.net\/?page_id=5588"},"modified":"2015-06-04T16:36:28","modified_gmt":"2015-06-04T14:36:28","slug":"expertise","status":"publish","type":"page","link":"https:\/\/www.ultraflux.net\/en\/expertise\/","title":{"rendered":"Expertise"},"content":{"rendered":"<ul class=\"gallery\"><li class=\"active image-1\"><p><img width=\"1000\" height=\"1000\" src=\"https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/Measurement-principle.jpg\" class=\"attachment-large size-large\" alt=\"ultrasonic flow meters\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/Measurement-principle.jpg 1000w, https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/Measurement-principle-150x150.jpg 150w, https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/Measurement-principle-300x300.jpg 300w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><\/li><\/ul><nav id=\"gallery-nav\"><ul class=\"gallery-nav\"><li class=\"active image-1\"><p><\/p><\/li><\/ul><\/nav>\n<div class=\"block\"><div class=\"title\">Measurement method choice: transit time difference<\/div><div class=\"text\"><div class=\"text-container\"><\/p>\n<p align=\"JUSTIFY\">From the various possible methods that use ultrasound to measure flow speed, Ultraflux chose the <strong>&#8220;transit time difference&#8221; method<\/strong>, which was identified as the most <strong>precise<\/strong> and the only one that can <strong>truly incorporate the velocity profile<\/strong> along the entire acoustic path.<\/p>\n<p align=\"JUSTIFY\">One or more chords can be used (one chord is made up of two probes) depending on the hydraulic conditions of the flow and the required precision.<\/p>\n<p align=\"JUSTIFY\">Two successive operations are used to measure the flow rate:<\/p>\n<ul>\n<li>First: speed is measured using one or more chords,<\/li>\n<li>Second: the flow rate is calculated using the measured speed(s).<\/li>\n<\/ul>\n<p>\n<\/div><\/div><\/div>\n<div class=\"block\"><div class=\"title\">Animation<\/div><div class=\"text\"><div class=\"text-container\">\n<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\"\n\t\t\tid=\"fm_anim_principe_gb_942980752\"\n\t\t\tclass=\"flashmovie\"\n\t\t\twidth=\"400\"\n\t\t\theight=\"300\">\n\t<param name=\"movie\" value=\"https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/anim_principe_gb.swf\" \/>\n\t<!--[if !IE]>-->\n\t<object\ttype=\"application\/x-shockwave-flash\"\n\t\t\tdata=\"https:\/\/www.ultraflux.net\/wp-content\/uploads\/2014\/06\/anim_principe_gb.swf\"\n\t\t\tname=\"fm_anim_principe_gb_942980752\"\n\t\t\twidth=\"400\"\n\t\t\theight=\"300\">\n\t<!--<![endif]-->\n\t\t\n<p><a href=\"http:\/\/adobe.com\/go\/getflashplayer\"><img decoding=\"async\" src=\"http:\/\/www.adobe.com\/images\/shared\/download_buttons\/get_flash_player.gif\" alt=\"Get Adobe Flash player\" \/><\/a><\/p>\n\n\t<!--[if !IE]>-->\n\t<\/object>\n\t<!--<![endif]-->\n<\/object>\n<\/div><\/div><\/div>\n<div class=\"block\"><div class=\"title\">Advantages of the transit time difference measurement procedure<\/div><div class=\"text\"><div class=\"text-container\"><\/p>\n<ul>\n<li>it only uses the geometric parameters L and D,<\/li>\n<li>it is totally independent of the speed\u00a0of sound in the fluid,<\/li>\n<li>it uses the average speed from several velocity profiles (up to 8),<\/li>\n<li>it enables bidirectional measurements to be taken,<\/li>\n<li>it is non-intrusive,<\/li>\n<li>it does not produce any loss of pressure,<\/li>\n<li>it enables highly dynamic measurements.<\/li>\n<\/ul>\n<p>\n<\/div><\/div><\/div>\n<div class=\"block_enhanced\"><p>\nThis measurement principle can be used for both <strong>liquids<\/strong> and <strong>gases<\/strong>. The probes used can be <strong><a title=\"Intrusive probes\" href=\"https:\/\/www.ultraflux.net\/en\/intrusive-probes\/\" target=\"_blank\">intrusive<\/a><\/strong>, <a title=\"External probes\" href=\"https:\/\/www.ultraflux.net\/en\/external-probes\/\" target=\"_blank\">external<\/a> (clamp-on) or <strong><a title=\"Wetted probes\" href=\"https:\/\/www.ultraflux.net\/en\/wetted-probes\/\" target=\"_blank\">wetted<\/a><\/strong>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":3998,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Expertise | Ultraflux - Expert in flow meters<\/title>\n<meta name=\"description\" content=\"Ultraflux, specialist in non intrusive ultrasound flow meters, employs the &quot;transit time difference&quot; method to determine a flow (for full pipe or channels).\" \/>\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.ultraflux.net\/en\/expertise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Expertise | Ultraflux - 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