{"id":12839,"date":"2023-10-20T10:41:27","date_gmt":"2023-10-20T08:41:27","guid":{"rendered":"https:\/\/www.dnota.com\/?page_id=12839"},"modified":"2026-10-25T00:43:58","modified_gmt":"2026-10-24T22:43:58","slug":"tunnels","status":"publish","type":"page","link":"https:\/\/www.dnota.com\/en\/products\/tunnels\/","title":{"rendered":"Tunnels"},"content":{"rendered":"<p>In tunnels, air quality and safety depend on measuring well and continuously. dnota offers equipment to monitor gases, opacity, particles and airflow in road tunnels and other underground environments.<\/p>\n<h2>Gas detectors<\/h2>\n<p>Optical gas detectors to identify leaks or abnormal concentrations of carbon monoxide (CO) and nitrogen dioxide (NO2) in road tunnels and industrial environments.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/carbon-co-carbon-monoxide-detector\/\">Carbon monoxide (CO) detector<\/a><\/li>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/gas-detector-carbon-monoxide-co\/\">Gas detector carbon monoxide CO<\/a><\/li>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/detector-optico-dioxido-de-nitrogeno-no2\/\">Optical nitrogen dioxide (NO2) detector<\/a><\/li>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/nitrogen-dioxide-gas-detector-no2\/\">Nitrogen dioxide gas detector NO2<\/a><\/li>\n<\/ul>\n<h2>Opacimeters<\/h2>\n<p>Continuous optical monitoring of air opacity along the tunnel.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/opacimeter-redline250\/\">Opacimeter REDLINE250<\/a><\/li>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/redline-20-opacimeter\/\">Redline 20 opacimeter<\/a><\/li>\n<\/ul>\n<h2>Ultrasonic anemometers<\/h2>\n<p>Measurement of airflow speed and direction in tunnels.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/anemometro-ultrasonicoufm20\/\">Ultrasonic anemometer UFM20<\/a><\/li>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/anemometer-ultrasonic-ultrasonic-point-type-ufm5\/\">Ultrasonic anemometer point type UFM5<\/a><\/li>\n<\/ul>\n<h2>Ultrafine particles<\/h2>\n<p>Analyzer for industrial and transport environments, such as tunnels and mining.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.dnota.com\/en\/productos-dnota\/ultrafine-particle-analyzer\/\">AVL UFPM\u2122 ultrafine particle analyzer<\/a><\/li>\n<\/ul>\n<p>Do you need equipment or a project for a tunnel? <a href=\"https:\/\/www.dnota.com\/en\/request-for-quotation\/\">Request a quotation<\/a> and we will advise you.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In tunnels, air quality and safety depend on measuring well  [&#8230;]<\/p>\n","protected":false},"author":330,"featured_media":0,"parent":11010,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"sector":[290,315],"class_list":["post-12839","page","type-page","status-publish","hentry","sector-sector","sector-sector-en"],"_links":{"self":[{"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/pages\/12839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/users\/330"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/comments?post=12839"}],"version-history":[{"count":2,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/pages\/12839\/revisions"}],"predecessor-version":[{"id":19757,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/pages\/12839\/revisions\/19757"}],"up":[{"embeddable":true,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/pages\/11010"}],"wp:attachment":[{"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/media?parent=12839"}],"wp:term":[{"taxonomy":"sector","embeddable":true,"href":"https:\/\/www.dnota.com\/en\/wp-json\/wp\/v2\/sector?post=12839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}