{"id":931,"count":5,"description":"Accurate moisture measurement in gases is crucial to ensure quality, process optimisation and equipment lifetime in several industrial sectors. Moisture can cause corrosion, catalyst poisoning and other undesirable reactions, making reliable monitoring critical in areas such as petrochemicals, semiconductor manufacturing, energy and medical gas production. With advanced moisture analysis, companies can ensure high product quality, minimise maintenance and comply with strict industry standards.","link":"https:\/\/www.omniprocess.se\/en\/produkt-kategori\/gasanalys\/fuktmatning\/","name":"Moisture measurement in gas","slug":"moisture-measurement","taxonomy":"product_cat","parent":17,"meta":{"details":"<h2 class=\"\" data-start=\"539\" data-end=\"601\">TDLAS\/TDLS (Tunable Diode Laser Absorption Spectroscopy)<\/h2>\r\n<h3 class=\"\" data-start=\"603\" data-end=\"614\">Princip<\/h3>\r\n<ul data-start=\"615\" data-end=\"1411\">\r\n \t<li class=\"\" data-start=\"615\" data-end=\"926\">\r\n<p class=\"\" data-start=\"617\" data-end=\"926\"><strong data-start=\"617\" data-end=\"643\">Selektiv IR-absorption<\/strong>: TDLAS utnyttjar en diodlaser som kan avge en <em data-start=\"690\" data-end=\"696\">smal<\/em> och <em data-start=\"701\" data-end=\"710\">tunable<\/em> (inst\u00e4llbar) v\u00e5gl\u00e4ngd i det infrar\u00f6da omr\u00e5det. Genom att st\u00e4lla in lasern p\u00e5 en specifik v\u00e5gl\u00e4ngd d\u00e4r vattenmolekylen (H\u2082O) har en karakt\u00e4ristisk absorptionslinje, kan man m\u00e4ta hur mycket av ljuset som absorberas.<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"927\" data-end=\"1149\">\r\n<p class=\"\" data-start=\"929\" data-end=\"1149\"><strong data-start=\"929\" data-end=\"964\">Absorptionslagen (Beer\u2013Lambert)<\/strong>: Genom att k\u00e4nna till ljusets intensitet f\u00f6re och efter passagen genom gasen och banl\u00e4ngden (dvs. hur l\u00e5ngt lasern f\u00e4rdas genom gasen) kan man r\u00e4kna ut koncentrationen av vatten\u00e5nga.<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"1150\" data-end=\"1411\">\r\n<p class=\"\" data-start=\"1152\" data-end=\"1411\"><strong data-start=\"1152\" data-end=\"1174\">Snabb och noggrann<\/strong>: Eftersom diodlasern \u00e4r mycket selektiv kan man snabbt m\u00e4ta l\u00e5ga niv\u00e5er av vatten\u00e5nga, ofta i ppm-omr\u00e5de. M\u00e4tmetoden p\u00e5verkas dessutom minimalt av andra gaser, eftersom de flesta molekyler inte absorberar exakt samma v\u00e5gl\u00e4ngd som H\u2082O.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 class=\"\" data-start=\"1925\" data-end=\"1963\">ZR22G (zirkoniabaserad detektor)<\/h2>\r\n<h3 class=\"\" data-start=\"1965\" data-end=\"1982\">Vad \u00e4r ZR22G?<\/h3>\r\n<ul data-start=\"1983\" data-end=\"2689\">\r\n \t<li class=\"\" data-start=\"1983\" data-end=\"2174\">\r\n<p class=\"\" data-start=\"1985\" data-end=\"2174\"><strong data-start=\"1985\" data-end=\"2011\">Zirkoniabaserad sensor<\/strong>: M\u00e5nga ZR22G-instrument (t.ex. Yokogawas produktserie) anv\u00e4nder en fast elektrolyt av zirkoniumoxid (ZrO\u2082) som \u00e4r ledande f\u00f6r syrgasioner vid h\u00f6ga temperaturer.<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"2175\" data-end=\"2439\">\r\n<p class=\"\" data-start=\"2177\" data-end=\"2439\"><strong data-start=\"2177\" data-end=\"2197\">Ofta syrem\u00e4tning<\/strong>: Dessa sensorer \u00e4r fr\u00e4mst k\u00e4nda f\u00f6r att m\u00e4ta syreinneh\u00e5ll i r\u00f6kgaser, ugnar och processmilj\u00f6er. Principen bygger p\u00e5 att en skillnad i syrgaspartialtryck mellan provgas och referensgas ger upphov till en elektrisk sp\u00e4nning i zirkoniacellen.<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"2440\" data-end=\"2689\">\r\n<p class=\"\" data-start=\"2442\" data-end=\"2689\"><strong data-start=\"2442\" data-end=\"2457\">Fuktm\u00e4tning<\/strong>: Vissa modeller eller varianter kan \u00e4ven anv\u00e4ndas f\u00f6r att ber\u00e4kna vatteninneh\u00e5ll om man k\u00e4nner till hur syre och vatten f\u00f6rh\u00e5ller sig i processen (exempelvis i f\u00f6rbr\u00e4nningsprocesser eller i reaktorer d\u00e4r vatten bildas\/f\u00f6rbrukas).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2691\" data-end=\"2728\">Hur fungerar den f\u00f6r fuktm\u00e4tning?<\/h2>\r\n<ul data-start=\"2729\" data-end=\"3193\">\r\n \t<li class=\"\" data-start=\"2729\" data-end=\"2957\">\r\n<p class=\"\" data-start=\"2731\" data-end=\"2957\"><strong data-start=\"2731\" data-end=\"2763\">Indirekt via partiellt tryck<\/strong>: Om systemet \u00e4r v\u00e4l definierat (t.ex. en f\u00f6rbr\u00e4nningsprocess med k\u00e4nt br\u00e4nsle och lufttillf\u00f6rsel) kan man teoretiskt r\u00e4kna ut fukthalten i gasen fr\u00e5n syreinneh\u00e5ll och andra processparametrar.<\/p>\r\n<\/li>\r\n \t<li class=\"\" data-start=\"2958\" data-end=\"3193\">\r\n<p class=\"\" data-start=\"2960\" data-end=\"3193\"><strong data-start=\"2960\" data-end=\"2981\">H\u00f6ga temperaturer<\/strong>: Zirkoniasensorer kr\u00e4ver vanligtvis en h\u00f6g arbetstemperatur (ofta 600\u2013800 \u00b0C) f\u00f6r att zirkoniumoxiden ska vara jonledande. Detta g\u00f6r dem s\u00e4rskilt anv\u00e4ndbara i varma processfl\u00f6den eller direkt i skorstenar\/ugnar.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 class=\"\" data-start=\"3195\" data-end=\"3207\"><\/h3>"},"menu_order":3,"_links":{"self":[{"href":"https:\/\/www.omniprocess.se\/en\/wp-json\/wp\/v2\/product_cat\/931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omniprocess.se\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/www.omniprocess.se\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/www.omniprocess.se\/en\/wp-json\/wp\/v2\/product_cat\/17"}],"wp:post_type":[{"href":"https:\/\/www.omniprocess.se\/en\/wp-json\/wp\/v2\/product?product_cat=931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}