{"id":7453,"date":"2025-06-18T13:24:27","date_gmt":"2025-06-18T10:24:27","guid":{"rendered":"https:\/\/www.ban.gr\/what-is-oxygen-referencing\/"},"modified":"2025-06-18T15:19:59","modified_gmt":"2025-06-18T12:19:59","slug":"what-is-oxygen-referencing","status":"publish","type":"post","link":"https:\/\/www.ban.gr\/en\/what-is-oxygen-referencing\/","title":{"rendered":"What is Oxygen referencing (O2 Ref)?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7453\" class=\"elementor elementor-7453 elementor-7362\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-e2cef6c e-flex e-con-boxed e-con e-parent\" data-id=\"e2cef6c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e8c48a2 elementor-widget elementor-widget-heading\" data-id=\"e8c48a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Oxygen referencing is a technique that is used to ensure that toxic or regulated emissions measurements are presented in a standardised format.<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4747dbb elementor-widget elementor-widget-wd_text_block\" data-id=\"4747dbb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p><span style=\"color: #000000;\"><em><strong>For example:<\/strong><\/em><\/span><br \/>Assume local regulations require that a process can only emit a maximum of say 75 ppm of NO. The first measurement of the emissions indicates that the oxygen reading is 6.5% and the NO reading is 80 ppm. Simply by adjusting the process controls to increase the oxygen level, a pass can be achieved. Effectively the sample is diluted by increasing the excess air. At an oxygen reading of 8% the NO reading would be diluted to 72ppm.<\/p><p>To overcome this problem regulatory authorities require that some reading are referenced to a pre-defined oxygen level.<\/p><p><span style=\"color: #000000;\">If the regulations require referencing to say 5% then in the above situation the reported NO reading would become:<\/span><br \/>NO ref = 80 x ((20.9-5.0)\/(20.9-6.5)) = 98.6 ppm<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Oxygen referencing is a technique that is used to ensure that toxic or regulated emissions measurements are presented in a standardised format.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[593],"tags":[594],"class_list":["post-7453","post","type-post","status-publish","format-standard","hentry","category-fuel-gas-analysers-en","tag-fuel-gas-analysers-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/posts\/7453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/comments?post=7453"}],"version-history":[{"count":4,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/posts\/7453\/revisions"}],"predecessor-version":[{"id":7457,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/posts\/7453\/revisions\/7457"}],"wp:attachment":[{"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/media?parent=7453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/categories?post=7453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ban.gr\/en\/wp-json\/wp\/v2\/tags?post=7453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}