{"title":"Dissolved Oxygen","description":"\u003cp\u003eDissolved oxygen data loggers and sensors for monitoring rivers, lakes, aquaculture and wastewater. Choose the HOBO MX801 dissolved oxygen logger, multi-parameter MX800 water loggers with a DO sensor, or galvanic dissolved oxygen sensors from pHionics.\u003c\/p\u003e","products":[{"product_id":"hobo-u26-001-dissolved-oxygen-logger","title":"HOBO U26-001 Dissolved Oxygen Logger","description":"\u003cp\u003eThe 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® Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e If you need to measure\u003cstrong\u003e DO\u003c\/strong\u003e in saltwater environments, salinity or conductivity measurements are required, which can be conveniently obtained with a HOBO Conductivity\/Salinity Logger (\u003ca href=\"\/products\/hobo-u24-002c-conductivity-data-logger-salt-water\"\u003eU24-002\u003c\/a\u003e). If you need DO in Percent Saturation, barometric pressure data is required, which can be logged with a HOBO Water Level Logger (\u003ca href=\"\/products\/hobo-u20-001-04-water-level-data-logger-0-4m-1\"\u003eU20-001-04\u003c\/a\u003e).\u003c\/p\u003e\n\u003cdiv style=\"max-width:560px;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/XeuflbHBiSM\" title=\"Product video\" style=\"display:block;width:100%;height:auto;aspect-ratio:16\/9;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eU26-001 data logger\u003c\/li\u003e\n\u003cli\u003eDO sensor cap\u003c\/li\u003e\n\u003cli\u003eProtective Guard\u003c\/li\u003e\n\u003cli\u003eCalibration Boot with sponge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAffordable, high performance dissolved oxygen (DO) monitoring with 0.2 mg\/L accuracy\u003c\/li\u003e\n\u003cli\u003eOptical DO sensor technology for long-lasting calibration with less maintenance\u003c\/li\u003e\n\u003cli\u003eSoftware corrects for measurement drift from fouling; provides salinity-adjusted DO concentrations and percent saturation\u003c\/li\u003e\n\u003cli\u003eOptical USB interface for high-speed, reliable data offload\u003c\/li\u003e\n\u003cli\u003eEasy-to-replace DO sensor cap lasts six months\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOBO","offers":[{"title":"Default Title","offer_id":54234521829723,"sku":"U26-001","price":2115.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/hobo-dissolved-oxygen-logger_u26-001.jpg?v=1790926882"},{"product_id":"hobo-mx800","title":"HOBO MX800 Series Multi-Parameter Water Data Loggers (Conductivity\/Salinity, Depth, Temperature (CT\/CTD) \u0026 Dissolved Oxygen)","description":"\u003cdiv style=\"max-width:560px;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/0C1MlJhYjmU\" title=\"Product video\" style=\"display:block;width:100%;height:auto;aspect-ratio:16\/9;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eHOBO MX800 Series multiparameter wireless data loggers work with interchangeable sensors to provide a highly configurable solution for monitoring water conductivity\/salinity, temperature, depth, and dissolved oxygen (coming soon). Available in both an easy-to-deploy, fully submersible model (MX801) and a direct read model (MX802) for convenient data offload that doesn’t require having to remove sensors from the water.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with interchangeable Conductivity, CTD (conductivity\/temperature\/depth), and DO sensors (sold separately) - swap out sensors for different applications\u003c\/li\u003e\n\u003cli\u003eBluetooth, for easy logger configuration and data offload\u003c\/li\u003e\n\u003cli\u003eEasy to deploy, fully submersible (MX801)\u003c\/li\u003e\n\u003cli\u003eDirect read for convenient data offload (MX802)\u003c\/li\u003e\n\u003cli\u003eLogger diameter is less than 2 inches\u003c\/li\u003e\n\u003cli\u003eFaster data offload via Bluetooth 5.0\u003c\/li\u003e\n\u003cli\u003eWater detect feature indicates when logger was out of the water (MX801)\u003c\/li\u003e\n\u003cli\u003eBarometric pressure sensor included (MX802)\u003c\/li\u003e\n\u003cli\u003eConnect two sensors to one logger to get measurements like salinity adjusted DO directly, with no need for post-processing\u003c\/li\u003e\n\u003cli\u003eGuided calibration ensures accurate data\u003c\/li\u003e\n\u003cli\u003eUser-replaceable batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRequires the free HOBOconnect mobile app (available from iTunes and Google Play).\u003c\/p\u003e\n\u003ch3\u003ePre-assembled Logger \u0026amp; Sensor Options \u003c\/h3\u003e\n\u003cp\u003eFor your convenience, the MX801 multi-parameter data logger is available for purchase in the pre-assembled logger and sensor configurations below:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hobo-mx801-do\" title=\"MX801-DO Dissolved Oxygen \u0026amp; Temperature Data Logger\"\u003eMX801-DO Dissolved Oxygen \u0026amp; Temperature Data Logger\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hobo-mx801-ct\" title=\"MX801-CT Conductivity \u0026amp; Temperature (CT) Data Logger\"\u003eMX801-CT Conductivity \u0026amp; Temperature (CT) Data Logger\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hobo-mx801-ctd-4\" title=\"MX801-CTD-0X Conductivity, Temperature \u0026amp; Depth Data Logger (available in four different depth options)\"\u003eMX801-CTD-0X Conductivity, Temperature \u0026amp; Depth Data Logger (available in four different depth options)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"max-width:560px;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/hNz-gviSkzI\" title=\"Product video\" style=\"display:block;width:100%;height:auto;aspect-ratio:16\/9;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e","brand":"HOBO","offers":[{"title":"Default Title","offer_id":54234934837595,"sku":"MX801","price":677.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/hobo_mx801_logger.jpg?v=1790932833"},{"product_id":"hobo-mx802","title":"HOBO MX802  Water Data Logger (Conductivity\/salinity, Depth, Temperature (CT\/CTD), \u0026 Dissolved Oxygen)","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eHOBO MX800 Series multiparameter wireless data loggers work with interchangeable sensors to provide a highly configurable solution for monitoring water conductivity\/salinity, temperature, depth, and dissolved oxygen (coming soon). Available in both an easy-to-deploy, fully submersible model (MX801) and a direct read model (MX802) for convenient data offload that doesn’t require having to remove sensors from the water.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with interchangeable Conductivity, CTD (conductivity\/temperature\/depth), and DO sensors (sold separately) - swap out sensors for different applications\u003c\/li\u003e\n\u003cli\u003eBluetooth, for easy logger configuration and data offload\u003c\/li\u003e\n\u003cli\u003eEasy to deploy, fully submersible (MX801)\u003c\/li\u003e\n\u003cli\u003eDirect read for convenient data offload (MX802)\u003c\/li\u003e\n\u003cli\u003eLogger diameter is less than 2 inches\u003c\/li\u003e\n\u003cli\u003eFaster data offload via Bluetooth 5.0\u003c\/li\u003e\n\u003cli\u003eWater detect feature indicates when logger was out of the water (MX801)\u003c\/li\u003e\n\u003cli\u003eBarometric pressure sensor included (MX802)\u003c\/li\u003e\n\u003cli\u003eConnect two sensors to one logger to get measurements like salinity adjusted DO directly, with no need for post-processing\u003c\/li\u003e\n\u003cli\u003eGuided calibration ensures accurate data\u003c\/li\u003e\n\u003cli\u003eUser-replaceable batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRequires the free HOBOconnect mobile app (available from iTunes and Google Play).\u003c\/p\u003e\n\u003cdiv style=\"max-width:560px;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/0C1MlJhYjmU\" title=\"Product video\" style=\"display:block;width:100%;height:auto;aspect-ratio:16\/9;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e","brand":"HOBO","offers":[{"title":"Default Title","offer_id":54234935132507,"sku":"MX802","price":677.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/hobo_mx801_logger_1.jpg?v=1790932850"},{"product_id":"w-do","title":"HOBO Dissolved Oxygen Sensor for MX800 Series Water Loggers","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe dissolved oxygen sensor is an interchangeable sensor that works with HOBO MX800 Series Water Loggers to measure dissolved oxygen and temperature.\u003c\/p\u003e\n\u003cp\u003eThe DO sensor can be attached directly to the fully submersible MX801 model, or attached via cable to the direct read MX802 model, which doesn’t require having to pull the sensor out of the water to download data.\u003c\/p\u003e\n\u003cp\u003eWhen this sensor is connected to a HOBO MX800 logger that also has a conductivity or CTD sensor attached, the logger can record salinity-adjusted DO directly. With this sensor attached to the HOBO MX802 direct read model, the logger can calculate DO percent saturation directly. When used with fully submersible HOBO MX801 model, a barometric logger data file (from either an MX802 or MX2001 logger) is needed to calculate DO percent saturation, for post-processing in the HOBOconnect app.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUser-replaceable DO cap lasts 2 years or more\u003c\/li\u003e\n\u003cli\u003eHigh accuracy measurements, even without calibration\u003c\/li\u003e\n\u003cli\u003eGet salinity-adjusted DO directly when used with conductivity sensor (W-CT or W-CTD), no need for post-processing\u003c\/li\u003e\n\u003cli\u003eDirect DO percent saturation data, no need for post-processing (when used with MX802)\u003c\/li\u003e\n\u003cli\u003eEasy calibration with included calibration boot – saves time\u003c\/li\u003e\n\u003cli\u003e1” diameter for use in narrow wells (with cable to MX802 above the well)\u003c\/li\u003e\n\u003cli\u003ePVC housing holds up in saltwater.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOBO","offers":[{"title":"Default Title","offer_id":54234937327963,"sku":"W-DO","price":1497.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/hobo-mx800-do-sensor-river.jpg?v=1790932903"},{"product_id":"sts-series-do-sensor","title":"pHionics STs Series Galvanic Dissolved Oxygen Sensor","description":"\u003cdiv style=\"max-width:560px;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/oLz_RY5PNvc\" title=\"Product video\" style=\"display:block;width:100%;height:auto;aspect-ratio:16\/9;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003eA narrow diameter allows the STs Series to go where other sensors cannot while the durable, chemical-resistant housing ensures many years in-use. The electrode tip (anode) has a large surface area that improves oxygen exchange consistency across the membrane while reducing the frequency of fouling.\u003c\/p\u003e\n\u003cp\u003eIn contrast to other dissolved oxygen sensors that require membrane and reference solution replacement every 3-6 months, the STs Series Dissolved Oxygen typically only requires electrode replacement every 2-3 years. In addition, the rugged Teflon® membrane resists scratches and tears that would put other sensors out of commission.\u003c\/p\u003e\n\u003cp\u003eWhen electrode replacement is needed, the procedure is done within 30 seconds, as shown in the video below. All these features free you up to focus on actionable insights from the data instead of spending time performing maintenance or troubleshooting.\u003c\/p\u003e\n\u003ch3\u003eRanges Available\u003c\/h3\u003e\n\u003cp\u003e0-20 mg\/L or 0-200% saturation depending on scaling with datalogger or RTU\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGalvanic electrode with a large surface area anode to increase stability and prevent clogging\u003c\/li\u003e\n\u003cli\u003eSecondary 0-50°C temperature sensor\u003c\/li\u003e\n\u003cli\u003eChemical-resistant Delrin®, PVDF, and 316 Stainless Steel housing (Titanium optional) for long-term monitoring\u003c\/li\u003e\n\u003cli\u003eNarrow diameter (0.75 inches or 1.9 cm)\u003c\/li\u003e\n\u003cli\u003eRemovable electrode guard to reduce debris buildup and protect from damage\u003c\/li\u003e\n\u003cli\u003eFully submersible up to 70 psi\u003c\/li\u003e\n\u003cli\u003eShielded, Kevlar®-reinforced, water-blocked polyurethane cable\u003c\/li\u003e\n\u003cli\u003e4-20 mA signal capable of transmission up to 3 miles (with proper wire gauge)\u003c\/li\u003e\n\u003cli\u003ePatented pHiConn™ connections to easily replace any part without special tools\u003c\/li\u003e\n\u003cli\u003eAutomatic Temperature Compensation (2% per degree Celsius)\u003c\/li\u003e\n\u003cli\u003eReversible Input Protection and Operation\u003c\/li\u003e\n\u003cli\u003eLow power usage for long-term water quality monitoring\u003c\/li\u003e\n\u003cli\u003eIsolated to prevent ground loops\u003c\/li\u003e\n\u003cli\u003eSignal conditioning to remove background noise.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"pHionics","offers":[{"title":"Default Title","offer_id":54234942374235,"sku":"SSDO-Sensor","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/phioincs_do-white-bkgd.jpg?v=1790933052"},{"product_id":"hobo-mx801-do","title":"HOBO MX801-DO Dissolved Oxygen \u0026 Water Temperature Data Logger","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis water monitoring solution kit includes a Dissolved Oxygen and Temperature sensor (W-DO) and a fully submersible, Bluetooth-enabled MX801 multiparameter data logger. Highly accurate and easy to deploy, the MX801 logger streamlines setup and data offloading by wirelessly connecting to a compatible mobile device or Windows computer using the free HOBOconnect app.\u003c\/p\u003e\n\u003cp\u003eFor your convenience, we've pre-selected the ideal logger and sensor to monitor Dissolved Oxygen (DO) and Temperature, making it easy to upgrade from the U26-001 HOBO Dissolved Oxygen Data Logger or quickly start monitoring these parameters.\u003c\/p\u003e\n\u003cp\u003eNeed to track additional parameters, like Conductivity or Depth? No problem—MX800 loggers support up to two sensors of your choice, offering maximum flexibility. \u003ca href=\"\/products\/hobo-mx800\" title=\"Learn more\"\u003eLearn more\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBluetooth, for easy logger configuration and data offload\u003c\/li\u003e\n\u003cli\u003eEasy to deploy, fully submersible\u003c\/li\u003e\n\u003cli\u003eLogger diameter is less than 2 inches\u003c\/li\u003e\n\u003cli\u003eFaster data offload via Bluetooth 5.0\u003c\/li\u003e\n\u003cli\u003eWater detect feature indicates when logger was out of the water\u003c\/li\u003e\n\u003cli\u003eAlso compatible with interchangeable Conductivity, CTD (conductivity\/temperature\/depth) sensor (sold separately) - swap out sensors for different applications\u003c\/li\u003e\n\u003cli\u003eGuided calibration ensures accurate data\u003c\/li\u003e\n\u003cli\u003eUser-replaceable batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRequires the free HOBOconnect mobile app (available from iTunes and Google Play).\u003c\/p\u003e","brand":"HOBO","offers":[{"title":"Default Title","offer_id":54234958594395,"sku":"MX801-DO","price":2153.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/0302\/7291\/files\/imgi_2_mx801-do-kit.jpg?v=1790933490"}],"url":"https:\/\/www.tempcon.co.uk\/collections\/dissolved-oxygen-data-loggers.oembed","provider":"Tempcon Instrumentation","version":"1.0","type":"link"}