{"id":2211,"date":"2018-10-02T13:13:59","date_gmt":"2018-10-02T11:13:59","guid":{"rendered":"http:\/\/www.tunnelsicherheit.at\/en\/?post_type=portfolio&#038;p=2211"},"modified":"2018-10-02T13:18:08","modified_gmt":"2018-10-02T11:18:08","slug":"t-fl-dp-air-flow-monitoring-system-differential-pressure","status":"publish","type":"portfolio","link":"https:\/\/www.tunnelsicherheit.at\/en\/product\/t-fl-dp-air-flow-monitoring-system-differential-pressure\/","title":{"rendered":"t\/FL-DP Air flow monitoring system &#8211; Differential pressure"},"content":{"rendered":"<div  class='flex_column av-1ck7kp2-a6ca6bcca44e5ec36c113da97d048cee av_one_full  avia-builder-el-0  el_before_av_three_fourth  avia-builder-el-first  first flex_column_div  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jmkosczu-b29b352b5a4118572b50c5280c55a98d\">\n.avia-image-container.av-jmkosczu-b29b352b5a4118572b50c5280c55a98d img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jmkosczu-b29b352b5a4118572b50c5280c55a98d .av-image-caption-overlay-center{\ncolor:#ffffff;\nfont-size:30px;\n}\n<\/style>\n<div  class='avia-image-container av-jmkosczu-b29b352b5a4118572b50c5280c55a98d av-styling- avia-align-center  avia-builder-el-1  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-2181 avia-img-lazy-loading-not-2181 avia_image ' src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?fit=1210%2C564&ssl=1\" alt='' title='tFL-DP_Slider'  height=\"564\" width=\"1210\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?w=1210&amp;ssl=1 1210w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=300%2C140&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=768%2C358&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=1030%2C480&amp;ssl=1 1030w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=705%2C329&amp;ssl=1 705w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=450%2C210&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/tFL-DP_Slider.jpg?resize=800%2C373&amp;ssl=1 800w\" sizes=\"(max-width: 1210px) 100vw, 1210px\" \/><\/div><\/div><\/div><\/div>\n<div  class='flex_column av-1avwkty-a39508341183a8f9420dae2bb542e17c av_three_fourth  avia-builder-el-2  el_after_av_one_full  el_before_av_one_fourth  first flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-ff9bc9e8803bd7cee847099078a29f1e\">\n#top .av-special-heading.av-av_heading-ff9bc9e8803bd7cee847099078a29f1e{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-ff9bc9e8803bd7cee847099078a29f1e .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-ff9bc9e8803bd7cee847099078a29f1e .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-ff9bc9e8803bd7cee847099078a29f1e av-special-heading-h3  avia-builder-el-3  el_before_av_textblock  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Air flow measurement by differential pressure<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-jmkotzte-b7f8d80caf79eb8d214bd3305581eb7a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>The air flow monitoring system measures the longitudinal air flow at 2 points in a tunnel cross section. The method allows to optionally remove all electronic components from the tunnels driving area to maintain a measurement also under high temperatures.<br \/>\nTwo differential pressure pitot tubes are mounted on opposite tunnel walls. Measuring the air flow at 2 points allows to calculate a representative average air flow over the tunnel cross section.<br \/>\nAn air flow in the tunnel generates a dynamic pressure on the side of the pitot tube facing the flow of air while on the other side only the static pressure is present. The measured differential pressure is used to calculate the air velocity under consideration of the also measured temperature. The values of the 2 measuring points are then averaged.<br \/>\nFollowing outputs are available: air velocity, direction of air flow, air tem-perature.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-16p1hv-c61bb3f8944f63b633b417634b48e605\">\n.flex_column.av-16p1hv-c61bb3f8944f63b633b417634b48e605{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-16p1hv-c61bb3f8944f63b633b417634b48e605 av_one_fourth  avia-builder-el-5  el_after_av_three_fourth  el_before_av_three_fourth  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-bcmp1f-a4ec5816bd7d33b8fcdf774c585b57e9\">\n#top .av-special-heading.av-bcmp1f-a4ec5816bd7d33b8fcdf774c585b57e9{\npadding-bottom:0;\n}\nbody .av-special-heading.av-bcmp1f-a4ec5816bd7d33b8fcdf774c585b57e9 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-bcmp1f-a4ec5816bd7d33b8fcdf774c585b57e9 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-bcmp1f-a4ec5816bd7d33b8fcdf774c585b57e9 av-special-heading-h3  avia-builder-el-6  el_before_av_promobox  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Request a quote<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  class='av_promobox av-8xt9lv-eacc9d1c9d9be5b27d277a379271dba7 avia-button-no  avia-builder-el-7  el_after_av_heading  el_before_av_button_big  avia-builder-el-last '><div class='avia-promocontent'><p>\nWould you like to request a quote for any of our products or services?<\/p>\n<p>Please click below and leave your details. We will contact you as soon as possible.<\/p>\n<\/div><\/div><br \/>\n<div  class='avia-button-wrap avia-button-center  avia-builder-el-8  el_after_av_promobox  avia-builder-el-last '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7axplf-1d50d73d31c38a1539207cf7cdc87407\">\n#top #wrap_all .avia-button.av-7axplf-1d50d73d31c38a1539207cf7cdc87407:hover{\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-7axplf-1d50d73d31c38a1539207cf7cdc87407:hover .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n<\/style>\n<a href='https:\/\/www.tunnelsicherheit.at\/kontakt\/anfrage\/' class='avia-color-theme-color avia-button avia-button-fullwidth av-7axplf-1d50d73d31c38a1539207cf7cdc87407 avia-icon_select-no avia-color-theme-color'   aria-label=\"Request\"><span class='avia_iconbox_title' >Request<\/span><span class='avia_button_background avia-button avia-button-fullwidth avia-color-theme-color'><\/span><\/a><\/div><\/p><\/div><\/p>\n<div  class='flex_column av-129ab3q-383510fd7dc877fd0a85151ee76e503b av_three_fourth  avia-builder-el-9  el_after_av_one_fourth  el_before_av_one_fourth  first flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4soeab-57a6671253d4f403b28d623f27b4e400\">\n#top .av-special-heading.av-4soeab-57a6671253d4f403b28d623f27b4e400{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-4soeab-57a6671253d4f403b28d623f27b4e400 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-4soeab-57a6671253d4f403b28d623f27b4e400 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-4soeab-57a6671253d4f403b28d623f27b4e400 av-special-heading-h3  avia-builder-el-10  el_before_av_tab_container  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >t\/FL-DP Air flow monitoring system &#8211; Differential pressure<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  class='tabcontainer av-jmkoxbe5-c0a8868bf5beab7856149895153db5f8 top_tab  avia-builder-el-11  el_after_av_heading  avia-builder-el-last '>\n<section class='av_tab_section av_tab_section av-7pmosz-202ef408f2cbab798b38ed5a5db41941'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div id='tab-id-1-tab' class='tab active_tab' role='tab' aria-selected=\"true\" tabindex=\"0\" data-fake-id='#tab-id-1' aria-controls='tab-id-1-content'  itemprop=\"headline\" ><span class='tab_icon avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue81e' data-av_iconfont='entypo-fontello' ><\/span>Features<\/div><div id='tab-id-1-content' class='tab_content active_tab_content' role='tabpanel' aria-labelledby='tab-id-1-tab' aria-hidden=\"false\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><ul>\n<li>Robust air flow monitoring system based on <strong>high-precision differential pressure measurement <\/strong><\/li>\n<li><strong>2-point mesh <\/strong><\/li>\n<li><strong>Automatic zeroing<\/strong> of differential pressure transducers<\/li>\n<li><strong>Touch evaluation and control unit<\/strong> to display measured values, status and set parameters<\/li>\n<li>Connection to tunnel control system by <strong>RS-485 MODBUS RTU<\/strong>, optionally by analogue outputs and relay contacts<\/li>\n<\/ul>\n<\/div><\/div><\/section>\n<section class='av_tab_section av_tab_section av-5rx1kz-5632bbb8800678ce341fdd31d8de6935'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div id='tab-id-2-tab' class='tab' role='tab' aria-selected=\"false\" tabindex=\"0\" data-fake-id='#tab-id-2' aria-controls='tab-id-2-content'  itemprop=\"headline\" ><span class='tab_icon avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue856' data-av_iconfont='entypo-fontello' ><\/span>System<\/div><div id='tab-id-2-content' class='tab_content' role='tabpanel' aria-labelledby='tab-id-2-tab' aria-hidden=\"true\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><ul>\n<li><strong>Two differential pressure pitot tubes<\/strong> mounted on opposite tunnel walls; pneumatically connected to the terminal boxes<\/li>\n<li><strong>Terminal boxes with differential pressure transducers<\/strong> to be mounted in the tunnel or remotely outside of the driving area (high temperature variant); either\n<ul>\n<li>1 terminal box: pneumatic connection to opposite side<\/li>\n<li>2 terminal boxes: electric connection to opposite side<\/li>\n<\/ul>\n<\/li>\n<li><strong>Touch evaluation and control unit<\/strong> to be mounted in closet outside the tunnel\u2019s driving area (niche, cross-cut, etc.); Connection to terminal box by RS-485 MODBUS RTU; Connection to tunnel control system by RS-485 MODBUS RTU<\/li>\n<li>Optional analogue outputs and relay contacts by DIN rail mounted devices<\/li>\n<\/ul>\n<\/div><\/div><\/section>\n<section class='av_tab_section av_tab_section av-3l3gsz-f461388b32d5d99801c5484ff2f0642a'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div id='tab-id-3-tab' class='tab' role='tab' aria-selected=\"false\" tabindex=\"0\" data-fake-id='#tab-id-3' aria-controls='tab-id-3-content'  itemprop=\"headline\" ><span class='tab_icon avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue82b' data-av_iconfont='entypo-fontello' ><\/span>Advantages<\/div><div id='tab-id-3-content' class='tab_content' role='tabpanel' aria-labelledby='tab-id-3-tab' aria-hidden=\"true\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><ul>\n<li>Specifically designed for tunnels<\/li>\n<li><strong>Easy installation and setup<\/strong><\/li>\n<li><strong>Long term stability<\/strong> by automatic zeroing<\/li>\n<li><strong>Measurement possible at high temperatures<\/strong><\/li>\n<li>Corrosion resistant against aggressive tunnel atmosphere<\/li>\n<li>Minimised spare requirements<\/li>\n<li>Extremely low maintenance requirements<\/li>\n<\/ul>\n<\/div><\/div><\/section>\n<section class='av_tab_section av_tab_section av-2vzm83-a982c1aa1b427f696dc190db1afa6c9f'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div id='tab-id-4-tab' class='tab' role='tab' aria-selected=\"false\" tabindex=\"0\" data-fake-id='#tab-id-4' aria-controls='tab-id-4-content'  itemprop=\"headline\" ><span class='tab_icon avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' ><\/span>Technical Specifications<\/div><div id='tab-id-4-content' class='tab_content' role='tabpanel' aria-labelledby='tab-id-4-tab' aria-hidden=\"true\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><table class=\"table_default\" width=\"100%\">\n<tbody>\n<tr>\n<th colspan=\"2\" width=\"100%\">Air flow measurement<\/th>\n<\/tr>\n<tr>\n<td width=\"25%\">Measuring method<\/td>\n<td width=\"75%\">Determination of average air flow through 2 point mesh measurement by differential pressure pitot tubes<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Measured values<\/td>\n<td width=\"75%\">Air velocity<br \/>\nAir flow direction<br \/>\nTemperature<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Measuring range<\/td>\n<td width=\"75%\">-20 .. 20 m\/s<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Resolution<\/td>\n<td width=\"75%\">0.1 m\/s, Accuracy depending on: installation, flow profile, typ. &lt;\u00b10.2 m\/s at 3 m\/s<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Response time<\/td>\n<td width=\"75%\">1 .. 180 s,configurable<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Alignment<\/td>\n<td width=\"75%\">Differential pressure pitot tubes mounted on opposite tunnel walls<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"table_default\" width=\"100%\">\n<tbody>\n<tr>\n<th colspan=\"2\" width=\"100%\">Outputs<\/th>\n<\/tr>\n<tr>\n<td width=\"25%\">Digital interface<\/td>\n<td width=\"75%\">1 x RS-485 MODBUS RTU to tunnel control system<br \/>\n(other interfaces on request)<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Analogue outputs (optional)<\/td>\n<td width=\"75%\">up to 4 x 4-20 mA, 500 \u2126<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Relay contacts (optional)<\/td>\n<td width=\"75%\">1 x fault indication (NC)<br \/>\n1 x direction of air flow (NC)<br \/>\nmax. 2 A @ 30 VDC or 2 A @ 250 VAC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"table_default\" width=\"100%\">\n<tbody>\n<tr>\n<th colspan=\"2\" width=\"100%\">Pitot tube<\/th>\n<\/tr>\n<tr>\n<td width=\"25%\">Type<\/td>\n<td width=\"75%\">JES t\/FL-DP SR<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Temperature range<\/td>\n<td width=\"75%\">-30 .. 400 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Dimensions<\/td>\n<td width=\"75%\">609 x h x 400 mm (w x h x d)<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Weight<\/td>\n<td width=\"75%\">5.5 kg<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Material<\/td>\n<td width=\"75%\">Stainless steel 1.4571\/316Ti or 1.4404\/316L<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"table_default\" width=\"100%\">\n<tbody>\n<tr>\n<th colspan=\"2\" width=\"100%\">Terminal box<\/th>\n<\/tr>\n<tr>\n<td width=\"25%\">Type<\/td>\n<td width=\"75%\">JES t\/FL-DP TB<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Operating voltage<\/td>\n<td width=\"75%\">85 .. 264 VAC, 47 .. 63 Hz<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">IP rating<\/td>\n<td width=\"75%\">IP65<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Temperature range<\/td>\n<td width=\"75%\">-30 .. 80 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Dimensions<\/td>\n<td width=\"75%\">360 x 250 x 173 mm<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Weight<\/td>\n<td width=\"75%\">11 kg<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Material<\/td>\n<td width=\"75%\">Solid rubber self-extinguishing, halogen and silicon free<br \/>\nor Stainless steel 1.4404 or 1.4571 (at surcharge)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"table_default\" width=\"100%\">\n<tbody>\n<tr>\n<th colspan=\"2\" width=\"100%\">Conformities<\/th>\n<\/tr>\n<tr>\n<td width=\"25%\">Electrical standards<\/td>\n<td width=\"75%\">2006\/95\/EC Low voltage directive (LVD)<br \/>\n2004\/108\/EC Electromagnetic compatibility (EMC)<\/td>\n<\/tr>\n<tr>\n<td width=\"25%\">Tunnel safety standards<\/td>\n<td width=\"75%\">AT: RVS 09.02.22 2010 &amp; ASFiNAG PlaPB<br \/>\nDE: RABT 2006<br \/>\nCH: ASTRA RL 13001 &amp; FHB BSA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/section>\n<\/div><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vc0bty-f4eba0109890a9dab2ab8b6b4031d8b6\">\n.flex_column.av-vc0bty-f4eba0109890a9dab2ab8b6b4031d8b6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vc0bty-f4eba0109890a9dab2ab8b6b4031d8b6 av_one_fourth  avia-builder-el-12  el_after_av_three_fourth  el_before_av_three_fourth  flex_column_div 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id=\"style-css-av-qzwh0m-fd60bbaaf6a6e772479555745c3c1d03\">\n.av_font_icon.av-qzwh0m-fd60bbaaf6a6e772479555745c3c1d03 .av-icon-char{\nfont-size:25px;\nline-height:25px;\nwidth:25px;\n}\n<\/style>\n<span  class='av_font_icon av-qzwh0m-fd60bbaaf6a6e772479555745c3c1d03 avia_animate_when_visible av-icon-style-border avia-icon-pos-center avia-iconfont avia-font-entypo-fontello av-no-color avia-icon-animate'><a href='\/wp-content\/uploads\/2018\/09\/PI_tFL-DP_DE.pdf'   class='av-icon-char' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' aria-hidden=\"false\" ><\/a><span class='av_icon_caption av-special-font'>Produktinfo DE (PDF, 579 kB)<\/span><\/span><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-pe2fba-14e5e1b87d103b64e2ac1fd54386bed5\">\n#top .hr.hr-invisible.av-pe2fba-14e5e1b87d103b64e2ac1fd54386bed5{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-pe2fba-14e5e1b87d103b64e2ac1fd54386bed5 hr-invisible  avia-builder-el-15  el_after_av_font_icon  el_before_av_font_icon '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ngxzza-5149f731ab85b83b74dab3e31070eb95\">\n.av_font_icon.av-ngxzza-5149f731ab85b83b74dab3e31070eb95 .av-icon-char{\nfont-size:25px;\nline-height:25px;\nwidth:25px;\n}\n<\/style>\n<span  class='av_font_icon av-ngxzza-5149f731ab85b83b74dab3e31070eb95 avia_animate_when_visible av-icon-style-border avia-icon-pos-center avia-iconfont avia-font-entypo-fontello av-no-color avia-icon-animate'><a href='\/wp-content\/uploads\/2018\/09\/PI_tFL-DP_EN.pdf'   class='av-icon-char' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' aria-hidden=\"false\" ><\/a><span class='av_icon_caption av-special-font'>Produktinfo EN (PDF, 579 kB)<\/span><\/span><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lum5ue-303d872769048ceebc2d1e67b5f15dd8\">\n#top .hr.hr-invisible.av-lum5ue-303d872769048ceebc2d1e67b5f15dd8{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-lum5ue-303d872769048ceebc2d1e67b5f15dd8 hr-invisible  avia-builder-el-17  el_after_av_font_icon  el_before_av_heading '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jmrlbrcu-29ae091b095e454e97a11bfa090f4ef6\">\n#top .av-special-heading.av-jmrlbrcu-29ae091b095e454e97a11bfa090f4ef6{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-jmrlbrcu-29ae091b095e454e97a11bfa090f4ef6 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jmrlbrcu-29ae091b095e454e97a11bfa090f4ef6 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jmrlbrcu-29ae091b095e454e97a11bfa090f4ef6 av-special-heading-h3  avia-builder-el-18  el_after_av_hr  el_before_av_codeblock '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Share<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<\/p><\/div>\n<div  class='flex_column av-h0cssm-ee7c9c32ea9bfa19f8845aba99a43499 av_three_fourth  avia-builder-el-20  el_after_av_one_fourth  el_before_av_one_fourth  first flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jmrlr9rm-3e0e54f427e086b0c35d5d27a7c49ce2\">\n#top .av-special-heading.av-jmrlr9rm-3e0e54f427e086b0c35d5d27a7c49ce2{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-jmrlr9rm-3e0e54f427e086b0c35d5d27a7c49ce2 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jmrlr9rm-3e0e54f427e086b0c35d5d27a7c49ce2 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jmrlr9rm-3e0e54f427e086b0c35d5d27a7c49ce2 av-special-heading-h3  avia-builder-el-21  el_before_av_image_hotspot  avia-builder-el-no-sibling '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >System setup<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-sub-av-gfb4k6-a2d69274b154ad8e1da8f1d47c7cc41f\">\n.av-hotspot-image-container .av-image-hotspot.av-85u3w3-d288b380d4aa7a8fdb48b269c302096b{\ntop:54%;\nleft:50.7%;\n}\n.av-hotspot-image-container .av-image-hotspot.av-5hpvzn-594d04b069f6cb466b5d9bb6b6d5d89f{\ntop:12.5%;\nleft:50.3%;\n}\n.av-hotspot-image-container .av-image-hotspot.av-3wo4sz-542f4bb06c0ccecb2932a1e479acf6b4{\ntop:68.2%;\nleft:59.3%;\n}\n.av-hotspot-image-container .av-image-hotspot.av-20u7ur-9a875d4dcba8997a2495a941b9477a1f{\ntop:92.1%;\nleft:53.6%;\n}\n<\/style>\n<div  class='av-hotspot-image-container av-gfb4k6-a2d69274b154ad8e1da8f1d47c7cc41f  avia-builder-el-22  el_after_av_heading  avia-builder-el-last  av-hotspot-numbered av-mobile-fallback-active  av-non-fullwidth-hotspot-image'  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class='av-hotspot-container'><div class='av-hotspot-container-inner-cell'><div class='av-hotspot-container-inner-wrap'><div class='av-image-hotspot av-85u3w3-d288b380d4aa7a8fdb48b269c302096b av-image-hotspot-1 ' data-avia-tooltip-position='right' data-avia-tooltip-alignment='bottom' data-avia-tooltip-class='av-tt-large-width av-tt-pos-right av-tt-align-bottom  av-mobile-fallback-active  main_color av-tt-hotspot' data-avia-tooltip='&lt;p&gt;&lt;strong&gt;&lt;sub&gt;Pitot tube A&lt;br \/&gt;\n&lt;\/sub&gt;&lt;\/strong&gt;&lt;\/p&gt;\n&lt;p&gt;Pitot tube A is mounted on the right lane in positive direction of flow.&lt;\/p&gt;\n'><div class='av-image-hotspot_inner'>1<\/div><div class='av-image-hotspot-pulse'><\/div><\/div><div class='av-image-hotspot av-5hpvzn-594d04b069f6cb466b5d9bb6b6d5d89f av-image-hotspot-2 ' data-avia-tooltip-position='right' data-avia-tooltip-alignment='bottom' data-avia-tooltip-class='av-tt-large-width av-tt-pos-right av-tt-align-bottom  av-mobile-fallback-active  main_color av-tt-hotspot' data-avia-tooltip='&lt;p&gt;&lt;strong&gt;&lt;sub&gt;Pitot tube B&lt;br \/&gt;\n&lt;\/sub&gt;&lt;\/strong&gt;&lt;\/p&gt;\n&lt;p&gt;Pitot tube B is mounted on the left lane in positive direction of flow.&lt;\/p&gt;\n'><div class='av-image-hotspot_inner'>2<\/div><div class='av-image-hotspot-pulse'><\/div><\/div><div class='av-image-hotspot av-3wo4sz-542f4bb06c0ccecb2932a1e479acf6b4 av-image-hotspot-3 ' data-avia-tooltip-position='right' data-avia-tooltip-alignment='bottom' data-avia-tooltip-class='av-tt-large-width av-tt-pos-right av-tt-align-bottom  av-mobile-fallback-active  main_color av-tt-hotspot' data-avia-tooltip='&lt;p&gt;&lt;strong&gt;&lt;sub&gt;Terminal box&lt;\/sub&gt;&lt;\/strong&gt;&lt;\/p&gt;\n&lt;p&gt;The pitot tube are pneumatically connected to the terminal boxes by hoses. The terminal box accomodates the differential pressure transducers and a temperature measurement. It is connected to the evaluation and control unit by a RS-485 bus cable.&lt;\/p&gt;\n'><div class='av-image-hotspot_inner'>3<\/div><div class='av-image-hotspot-pulse'><\/div><\/div><div class='av-image-hotspot av-20u7ur-9a875d4dcba8997a2495a941b9477a1f av-image-hotspot-4 ' data-avia-tooltip-position='top' data-avia-tooltip-alignment='left' data-avia-tooltip-class='av-tt-default-width av-tt-pos-above av-tt-align-left  av-mobile-fallback-active  main_color av-tt-hotspot' data-avia-tooltip='&lt;p&gt;&lt;strong&gt;Evaluation and control unit&lt;\/strong&gt;&lt;\/p&gt;\n&lt;p&gt;The evaluation and control unit collects the measured values of the differential pressure transmitters and the temperature measurement and processes the. The measured values are provided via RS-485 MODBUS RTU interface or optionally via analogue outputs and relay contacts.&lt;\/p&gt;\n'><div class='av-image-hotspot_inner'>4<\/div><div class='av-image-hotspot-pulse'><\/div><\/div><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-2184 avia-img-lazy-loading-not-2184 avia_image' src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/FL-DP_Grafik.png?resize=845%2C321&ssl=1\" alt='' title='FL-DP_Grafik'  height=\"321\" width=\"845\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/FL-DP_Grafik.png?resize=845%2C321&amp;ssl=1 845w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/FL-DP_Grafik.png?zoom=2&amp;resize=845%2C321&amp;ssl=1 1690w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/FL-DP_Grafik.png?zoom=3&amp;resize=845%2C321&amp;ssl=1 2535w\" sizes=\"(max-width: 845px) 100vw, 845px\" \/><\/div><\/div><\/div><div class='av-hotspot-fallback-tooltip av-image-hotspot-1 '><div class=\"av-hotspot-fallback-tooltip-count\">1<div class=\"avia-arrow\"><\/div><\/div><div class=\"av-hotspot-fallback-tooltip-inner clearfix\"><p>\n<strong><sub>Pitot tube A<br \/>\n<\/sub><\/strong><\/p>\n<p>Pitot tube A is mounted on the right lane in positive direction of flow.<\/p>\n<\/div><\/div><div class='av-hotspot-fallback-tooltip av-image-hotspot-2 '><div class=\"av-hotspot-fallback-tooltip-count\">2<div class=\"avia-arrow\"><\/div><\/div><div class=\"av-hotspot-fallback-tooltip-inner clearfix\"><p>\n<strong><sub>Pitot tube B<br \/>\n<\/sub><\/strong><\/p>\n<p>Pitot tube B is mounted on the left lane in positive direction of flow.<\/p>\n<\/div><\/div><div class='av-hotspot-fallback-tooltip av-image-hotspot-3 '><div class=\"av-hotspot-fallback-tooltip-count\">3<div class=\"avia-arrow\"><\/div><\/div><div class=\"av-hotspot-fallback-tooltip-inner clearfix\"><p>\n<strong><sub>Terminal box<\/sub><\/strong><\/p>\n<p>The pitot tube are pneumatically connected to the terminal boxes by hoses. The terminal box accomodates the differential pressure transducers and a temperature measurement. It is connected to the evaluation and control unit by a RS-485 bus cable.<\/p>\n<\/div><\/div><div class='av-hotspot-fallback-tooltip av-image-hotspot-4 '><div class=\"av-hotspot-fallback-tooltip-count\">4<div class=\"avia-arrow\"><\/div><\/div><div class=\"av-hotspot-fallback-tooltip-inner clearfix\"><p>\n<strong>Evaluation and control unit<\/strong><\/p>\n<p>The evaluation and control unit collects the measured values of the differential pressure transmitters and the temperature measurement and processes the. The measured values are provided via RS-485 MODBUS RTU interface or optionally via analogue outputs and relay contacts.<\/p>\n<\/div><\/div><\/div><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-96fu52-259981bb5c05dfb15c24d402bde60822\">\n.flex_column.av-96fu52-259981bb5c05dfb15c24d402bde60822{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-96fu52-259981bb5c05dfb15c24d402bde60822 av_one_fourth  avia-builder-el-23  el_after_av_three_fourth  el_before_av_one_full  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jmrlpmd7-adebeb52ad95dcd77e68f4e543dac959\">\n#top .av-special-heading.av-jmrlpmd7-adebeb52ad95dcd77e68f4e543dac959{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-jmrlpmd7-adebeb52ad95dcd77e68f4e543dac959 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jmrlpmd7-adebeb52ad95dcd77e68f4e543dac959 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jmrlpmd7-adebeb52ad95dcd77e68f4e543dac959 av-special-heading-h3  avia-builder-el-24  el_before_av_gallery  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Gallery<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-6dqkvq-7a32db8cd2f6ef249816dbb83a7e55a6\">\n#top .avia-gallery.av-6dqkvq-7a32db8cd2f6ef249816dbb83a7e55a6 .avia-gallery-thumb a{\nwidth:50%;\n}\n<\/style>\n<div  class='avia-gallery av-6dqkvq-7a32db8cd2f6ef249816dbb83a7e55a6 avia_animate_when_visible  avia-builder-el-25  el_after_av_heading  avia-builder-el-last  avia_lazyload avia-gallery-animate avia-gallery-1'  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><meta itemprop=\"contentURL\" content=\"https:\/\/www.tunnelsicherheit.at\/en\/product\/t-fl-dp-air-flow-monitoring-system-differential-pressure\/\"><div class='avia-gallery-thumb'><a href=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?fit=1030%2C1004&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?w=2988&amp;ssl=1 2988w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=300%2C293&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=768%2C749&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=1030%2C1004&amp;ssl=1 1030w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=1500%2C1463&amp;ssl=1 1500w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=705%2C688&amp;ssl=1 705w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=450%2C439&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=800%2C780&amp;ssl=1 800w\" data-sizes=\"(max-width: 1030px) 100vw, 1030px\" data-rel='gallery-1' data-prev-img='https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=495%2C400&ssl=1' class='first_thumb lightbox ' data-onclick='1' title='Pitot tube A and Terminal box mounted on tunnel wall'  itemprop=\"thumbnailUrl\"  ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-2205 avia-img-lazy-loading-not-2205\"   src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=80%2C80&ssl=1\" width=\"80\" height=\"80\"  title='Pitot tube A and Terminal box mounted on tunnel wall' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=80%2C80&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=180%2C180&amp;ssl=1 180w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=120%2C120&amp;ssl=1 120w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=450%2C450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=600%2C600&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?zoom=3&amp;resize=80%2C80&amp;ssl=1 240w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><div class='big-prev-fake'><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-2205 avia-img-lazy-loading-2205\"  width=\"495\" height=\"400\" src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=495%2C400&ssl=1\" title='Pitot tube A and Terminal box mounted on tunnel wall' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=495%2C400&amp;ssl=1 495w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?resize=845%2C684&amp;ssl=1 845w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?zoom=2&amp;resize=495%2C400&amp;ssl=1 990w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135703.jpg?zoom=3&amp;resize=495%2C400&amp;ssl=1 1485w\" sizes=\"auto, (max-width: 495px) 100vw, 495px\" \/><\/div><\/a><a href=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?fit=1030%2C949&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?w=2988&amp;ssl=1 2988w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=300%2C276&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=768%2C708&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=1030%2C949&amp;ssl=1 1030w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=1500%2C1382&amp;ssl=1 1500w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=705%2C650&amp;ssl=1 705w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=450%2C415&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=800%2C737&amp;ssl=1 800w\" data-sizes=\"(max-width: 1030px) 100vw, 1030px\" data-rel='gallery-1' data-prev-img='https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=495%2C400&ssl=1' class='lightbox ' data-onclick='2' title='Pitot tube B with pneumatic connection to terminal box'  itemprop=\"thumbnailUrl\"  ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-2207 avia-img-lazy-loading-not-2207\"   src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=80%2C80&ssl=1\" width=\"80\" height=\"80\"  title='Pitot tube B with pneumatic connection to terminal box' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=80%2C80&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=180%2C180&amp;ssl=1 180w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=120%2C120&amp;ssl=1 120w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135944.jpg?resize=450%2C450&amp;ssl=1 450w, 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fetchpriority=\"high\" class=\"wp-image-2197 avia-img-lazy-loading-not-2197\"   src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=80%2C80&ssl=1\" width=\"80\" height=\"80\"  title='Air flow monitoring system t\/FL-DP mounted in tunnel' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=80%2C80&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=180%2C180&amp;ssl=1 180w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=120%2C120&amp;ssl=1 120w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135908.jpg?resize=450%2C450&amp;ssl=1 450w, 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class='first_thumb lightbox ' data-onclick='5' title='Pitot tube A and Terminal box mounted on tunnel wall'  itemprop=\"thumbnailUrl\"  ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-2203 avia-img-lazy-loading-not-2203\"   src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=80%2C80&ssl=1\" width=\"80\" height=\"80\"  title='Pitot tube A and Terminal box mounted on tunnel wall' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=80%2C80&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=180%2C180&amp;ssl=1 180w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=120%2C120&amp;ssl=1 120w, 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srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=495%2C400&amp;ssl=1 495w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?resize=845%2C684&amp;ssl=1 845w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?zoom=2&amp;resize=495%2C400&amp;ssl=1 990w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/20170926_135234.jpg?zoom=3&amp;resize=495%2C400&amp;ssl=1 1485w\" sizes=\"auto, (max-width: 495px) 100vw, 495px\" \/><\/div><\/a><a href=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?fit=1030%2C773&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?w=2560&amp;ssl=1 2560w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=300%2C225&amp;ssl=1 300w, 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data-prev-img='https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=495%2C400&ssl=1' class='lightbox ' data-onclick='6' title='Pitot tube A and Terminal box mounted on tunnel wall'  itemprop=\"thumbnailUrl\"  ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-2209 avia-img-lazy-loading-not-2209\"   src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=80%2C80&ssl=1\" width=\"80\" height=\"80\"  title='Pitot tube A and Terminal box mounted on tunnel wall' alt='' srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=80%2C80&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=36%2C36&amp;ssl=1 36w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=180%2C180&amp;ssl=1 180w, 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srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=495%2C400&amp;ssl=1 495w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?resize=845%2C684&amp;ssl=1 845w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?zoom=2&amp;resize=495%2C400&amp;ssl=1 990w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2018\/09\/P1080181.jpg?zoom=3&amp;resize=495%2C400&amp;ssl=1 1485w\" sizes=\"auto, (max-width: 495px) 100vw, 495px\" \/><\/div><\/a><\/div><\/div><\/p><\/div>\n<div  class='flex_column av-4ekunq-d4f1b614272b8f45720764fd422629aa av_one_full  avia-builder-el-26  el_after_av_one_fourth  avia-builder-el-last  first flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jmrm3bqx-46b17286cc502e0be3df98c15722c41a\">\n#top .av-special-heading.av-jmrm3bqx-46b17286cc502e0be3df98c15722c41a{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-jmrm3bqx-46b17286cc502e0be3df98c15722c41a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jmrm3bqx-46b17286cc502e0be3df98c15722c41a .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jmrm3bqx-46b17286cc502e0be3df98c15722c41a av-special-heading-h3  avia-builder-el-27  el_before_av_portfolio  avia-builder-el-no-sibling '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Related products<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  id=\"av-sc-portfolio-1\"  class=' grid-sort-container isotope   no_margin-container with-excerpt-container grid-total-even grid-col-4 grid-links-' data-portfolio-id='1'><div data-ajax-id='690' class=' grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-690 grid-entry-overview grid-loop-1 grid-parity-odd  air_sort  av_one_fourth first default_av_fullwidth '><article class='main_color inner-entry'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><a href=\"https:\/\/www.tunnelsicherheit.at\/en\/product\/tfl-us-air-flow-measuring-system-ultrasonic\/\" title='t\/FL-USX Air flow monitoring system &#8211; Ultrasonic cross-section'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/tASUS_Portfolio1.jpg?resize=260%2C185&amp;ssl=1\" class=\"wp-image-851 avia-img-lazy-loading-not-851 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/tASUS_Portfolio1.jpg?w=450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/tASUS_Portfolio1.jpg?resize=300%2C213&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/tASUS_Portfolio1.jpg?resize=260%2C185&amp;ssl=1 260w\" sizes=\"(max-width: 260px) 100vw, 260px\" data-wp-pid=\"851\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portfolio: t\/FL-USX Air flow monitoring system &#8211; Ultrasonic cross-section&lt;br&gt;\"><h3 class='grid-entry-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.tunnelsicherheit.at\/en\/product\/tfl-us-air-flow-measuring-system-ultrasonic\/' title='t\/FL-USX Air flow monitoring system &#8211; Ultrasonic cross-section'>t\/FL-USX Air flow monitoring system &#8211; Ultrasonic cross-section<br><\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='703' class=' grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-703 grid-entry-overview grid-loop-2 grid-parity-even  air_sort  av_one_fourth  default_av_fullwidth '><article class='main_color inner-entry'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><a href=\"https:\/\/www.tunnelsicherheit.at\/en\/product\/text-extractive-visibility-and-gas-monitoring-system\/\" title='t\/EXT Extractive visibility and gas monitoring system'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/t_COVISext_Portfolio.jpg?resize=260%2C185&amp;ssl=1\" class=\"wp-image-849 avia-img-lazy-loading-not-849 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/t_COVISext_Portfolio.jpg?w=450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/t_COVISext_Portfolio.jpg?resize=300%2C213&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2015\/07\/t_COVISext_Portfolio.jpg?resize=260%2C185&amp;ssl=1 260w\" sizes=\"(max-width: 260px) 100vw, 260px\" data-wp-pid=\"849\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portfolio: t\/EXT Extractive visibility and gas monitoring system\"><h3 class='grid-entry-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.tunnelsicherheit.at\/en\/product\/text-extractive-visibility-and-gas-monitoring-system\/' title='t\/EXT Extractive visibility and gas monitoring system'>t\/EXT Extractive visibility and gas monitoring system<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='3607' class=' grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-3607 grid-entry-overview grid-loop-3 grid-parity-odd  air_sort  av_one_fourth  default_av_fullwidth '><article class='main_color inner-entry'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><a href=\"https:\/\/www.tunnelsicherheit.at\/en\/product\/smart-aqm-air-quality-monitor\/\" title='smart\/AQM Air Quality Monitor'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/08\/smartAQM_Portfolio.png?resize=260%2C185&amp;ssl=1\" class=\"wp-image-3594 avia-img-lazy-loading-not-3594 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/08\/smartAQM_Portfolio.png?w=450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/08\/smartAQM_Portfolio.png?resize=300%2C213&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/08\/smartAQM_Portfolio.png?resize=260%2C185&amp;ssl=1 260w\" sizes=\"(max-width: 260px) 100vw, 260px\" data-wp-pid=\"3594\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portfolio: smart\/AQM Air Quality Monitor\"><h3 class='grid-entry-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.tunnelsicherheit.at\/en\/product\/smart-aqm-air-quality-monitor\/' title='smart\/AQM Air Quality Monitor'>smart\/AQM Air Quality Monitor<\/a><\/h3><\/header><div class='grid-entry-excerpt entry-content'  itemprop=\"text\" >smart\/AQM is an IoT-enabled air quality sensor for measuring the visibility of particles and the concentration of toxic gases in tunnels or enclosed spaces. It can be equipped with up to 3 electrochemical gas sensor modules.   <\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='3440' class=' grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-3440 grid-entry-overview grid-loop-4 grid-parity-even  post-entry-last  air_sort  av_one_fourth  default_av_fullwidth '><article class='main_color inner-entry'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><a href=\"https:\/\/www.tunnelsicherheit.at\/en\/product\/smart-ecs-multi-gas-sensor\/\" title='smart\/ECS Multi Gas Sensor'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/07\/smartECS_Portfolio.png?resize=260%2C185&amp;ssl=1\" class=\"wp-image-3387 avia-img-lazy-loading-not-3387 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/07\/smartECS_Portfolio.png?w=450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/07\/smartECS_Portfolio.png?resize=300%2C213&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tunnelsicherheit.at\/wp-content\/uploads\/2021\/07\/smartECS_Portfolio.png?resize=260%2C185&amp;ssl=1 260w\" sizes=\"(max-width: 260px) 100vw, 260px\" data-wp-pid=\"3387\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portfolio: smart\/ECS Multi Gas Sensor\"><h3 class='grid-entry-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.tunnelsicherheit.at\/en\/product\/smart-ecs-multi-gas-sensor\/' title='smart\/ECS Multi Gas Sensor'>smart\/ECS Multi Gas Sensor<\/a><\/h3><\/header><div class='grid-entry-excerpt entry-content'  itemprop=\"text\" >smart\/ECS is an IoT enabled multi gas sensor to detect toxic gases in tunnels or closed spaces. It can be equipped with up to 4 electrochemical gas sensor modules. <\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><\/div><div class='pagination-wrap  '><nav class='pagination'><span class='pagination-meta'>Page 1 of 2<\/span><span class='current'>1<\/span><a href='https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio\/2211\/?avia-element-paging=2' class='inactive next_page' >2<\/a><\/nav>\n<\/div><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":2179,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[32,149,182,183,273,33,148,302,25,167,169,168],"portfolio_entries":[119],"class_list":["post-2211","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","tag-air-flow","tag-air-flow-sensor","tag-air-speed","tag-air-speed-sensor","tag-air-temperature","tag-air-velocity","tag-air-velocity-sensor","tag-differential-pressure","tag-flow","tag-flow-direction","tag-flow-probe","tag-flow-sensor","portfolio_entries-air"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>t\/FL-DP Air flow monitoring system - Differential pressure - JES tunnelsafety.at<\/title>\n<meta name=\"description\" content=\"The differential air flow monitoring system t\/FL-DP measures the longitudinal air flow at 2 points in a tunnel cross section.\" \/>\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.tunnelsicherheit.at\/en\/product\/t-fl-dp-air-flow-monitoring-system-differential-pressure\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.tunnelsicherheit.at\\\/en\\\/product\\\/t-fl-dp-air-flow-monitoring-system-differential-pressure\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.tunnelsicherheit.at\\\/en\\\/home\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"t\\\/FL-DP Air flow monitoring system &#8211; Differential pressure\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"t\/FL-DP Air flow monitoring system - Differential pressure - JES tunnelsafety.at","description":"The differential air flow monitoring system t\/FL-DP measures the longitudinal air flow at 2 points in a tunnel cross section.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.tunnelsicherheit.at\/en\/product\/t-fl-dp-air-flow-monitoring-system-differential-pressure\/","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/www.tunnelsicherheit.at\/en\/product\/t-fl-dp-air-flow-monitoring-system-differential-pressure\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.tunnelsicherheit.at\/en\/home\/"},{"@type":"ListItem","position":2,"name":"t\/FL-DP Air flow monitoring system &#8211; Differential pressure"}]}]}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio\/2211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/comments?post=2211"}],"version-history":[{"count":1,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio\/2211\/revisions"}],"predecessor-version":[{"id":2217,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio\/2211\/revisions\/2217"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/media\/2179"}],"wp:attachment":[{"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/media?parent=2211"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/tags?post=2211"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/www.tunnelsicherheit.at\/en\/wp-json\/wp\/v2\/portfolio_entries?post=2211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}