{"id":44558,"date":"2024-03-14T04:18:44","date_gmt":"2024-03-13T17:48:44","guid":{"rendered":"https:\/\/onetemp.c2szky.ap-southeast-2.wpstaqhosting.com\/product\/hobo-u26-dissolved-oxygen-data-logger-2\/"},"modified":"2026-11-05T13:00:31","modified_gmt":"2026-11-05T02:30:31","slug":"hobo-u26-dissolved-oxygen-data-logger-2","status":"publish","type":"product","link":"https:\/\/www.onetemp.com.au\/nz\/product\/hobo-u26-dissolved-oxygen-data-logger-2\/","title":{"rendered":"HOBO U26 &#8211; Dissolved Oxygen Data Logger"},"content":{"rendered":"<h2>Monitor Dissolved Oxygen Without the Hassle of Constant Calibration<\/h2>\n<p>An affordable, precise data logger that measures oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters. Recommended for aquatic biology and hydrology research projects, this easy-to-maintain logger uses RDO\u00ae Basic (Rugged Dissolved Oxygen) optical DO sensor technology.<\/p>\n<h3>Features<\/h3>\n<ul style=\"list-style-type: disc;\">\n<li>Affordable, high performance dissolved oxygen (DO) monitoring with 0.2 mg\/L accuracy<\/li>\n<li>Optical DO sensor technology for long-lasting calibration with less maintenance<\/li>\n<li>HOBOware Pro&#8217;s Dissolved Oxygen Assistant software corrects for measurement drift from fouling; provides salinity-adjusted DO concentrations and percent saturation<\/li>\n<li>Optical USB interface for high-speed, reliable data offload<\/li>\n<li>User-replaceable DO sensor cap eliminates need to send logger back to the factory to replace membrane<\/li>\n<\/ul>\n<p>Note:\u00a0For DO measurements in saltwater, an adjustment for salinity is required. For waters with small changes in salinity (&lt;2 ppt), a salinity meter reading typically provides enough accuracy. For environments with greater salinity changes, we generally recommend the <a href=\"\/nz\/product\/hobo-u24-conductivity-salinity-salt-water-data-logger\/\" target=\"_blank\" rel=\"noopener\">HOBO U24-002-C Conductivity logger<\/a>. If you need DO in Percent Saturation, barometric pressure data is required, which can be logged with a <a href=\"\/nz\/product\/hobo-u20-series-water-level-loggers\/\" target=\"_blank\" rel=\"noopener\">HOBO U20-001-04 Water Level logger<\/a>.<\/p>\n<h3>Important Information<\/h3>\n<p>Requires\u00a0<a href=\"\/nz\/product\/hoboware-graphing-analysis-software\/\" target=\"_blank\" rel=\"noopener\">HOBOware Pro software<\/a> and either a\u00a0<a href=\"\/nz\/product\/hobo-waterproof-shuttle\/\" target=\"_blank\" rel=\"noopener\">U-DTW-1 Waterproof Shuttle<\/a> or the\u00a0<a href=\"\/nz\/product\/hobo-optic-usb-base-station\/\" target=\"_blank\" rel=\"noopener\">Base-U-4 Optic USB Base Station<\/a> for configuration and data offload.<\/p>","protected":false},"excerpt":{"rendered":"<p>The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals, the HOBO U26 combines the high accuracy, robust performance of industry-leading RDO\u00ae Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.<\/p>","protected":false},"featured_media":32144,"template":"","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"inline_featured_image":false,"_exactmetrics_skip_tracking":false,"_monsterinsights_skip_tracking":false},"product_brand":[],"product_cat":[15],"product_tag":[],"application":[363],"connectivity-output":[84],"environment":[88],"instrument-type":[189],"manufacturer":[263],"measurement-input":[108],"class_list":["post-44558","product","type-product","status-publish","has-post-thumbnail","product_cat-products","application-water-quality","connectivity-output-usb","environment-underwater-monitoring","instrument-type-data-loggers","manufacturer-hobo-data-loggers","measurement-input-dissolved-oxygen-do","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"composite_virtual":false,"composite_aggregate_weight":false,"composite_layout":"","composite_add_to_cart_form_location":"","composite_editable_in_cart":false,"composite_sold_individually_context":"","composite_shop_price_calc":"","composite_components":[],"composite_scenarios":[],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"bundle_sells_title":"","bundle_sells_discount":"","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HOBO U26 - Dissolved Oxygen Data Logger - OneTemp<\/title>\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.onetemp.com.au\/nz\/product\/hobo-u26-dissolved-oxygen-data-logger-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HOBO U26 - Dissolved Oxygen Data Logger - OneTemp\" \/>\n<meta property=\"og:description\" content=\"The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals, the HOBO U26 combines the high accuracy, robust performance of industry-leading RDO\u00ae Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.onetemp.com.au\/nz\/product\/hobo-u26-dissolved-oxygen-data-logger-2\/\" \/>\n<meta property=\"og:site_name\" content=\"OneTemp\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/OneTempAust\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-05T02:30:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/U26-Dissolved-Oxygen-Logger-Product-Gallery-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"HOBO U26 - Dissolved Oxygen Data Logger - OneTemp","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.onetemp.com.au\/nz\/product\/hobo-u26-dissolved-oxygen-data-logger-2\/","og_locale":"en_US","og_type":"article","og_title":"HOBO U26 - Dissolved Oxygen Data Logger - OneTemp","og_description":"The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. 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