{"product_id":"hobo-u20l-04-water-level-data-logger","title":"HOBO Water Level (13 Feet) Data Logger","description":"\u003cdiv class=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2593\/8322\/files\/onset_large.gif?v=1514413762\" alt=\"\" style=\"margin-right: 20px; margin-bottom: 1px; float: left;\" width=\"69\" height=\"33\"\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eProduct Code: U20L-04\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"\"\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe HOBO U20L-04 Water Level Data Logger is a compact, rugged data logger designed for long-term monitoring of water level and temperature in freshwater environments. The logger uses a vented pressure sensor to measure water pressure while automatically compensating for changes in atmospheric pressure.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe U20L-04 is suitable for groundwater monitoring, stream and lake studies, hydrology, watershed research, environmental monitoring and water-resource management. Its compact design allows it to be installed in monitoring wells, stilling wells and other confined locations.\u003c\/p\u003e\n\u003cp\u003eThe U20L-04 has a 0–4.4 m (0–14.7 ft) water-level measurement range, with a 0.05% FS accuracy. It can record measurements at user-selectable intervals and stores up to 21,200 measurements.\u003c\/p\u003e\n\u003cp\u003eThe logger features a durable, corrosion-resistant housing and is designed for extended deployment in freshwater applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures water level and temperature\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e4.4 m (14.7 ft) water-level range\u003c\/li\u003e\n\u003cli\u003eVented pressure-sensor design\u003c\/li\u003e\n\u003cli\u003eAutomatic atmospheric-pressure compensation\u003c\/li\u003e\n\u003cli\u003eCompact design for wells and other confined installations\u003c\/li\u003e\n\u003cli\u003eStores up to 21,200 measurements\u003c\/li\u003e\n\u003cli\u003eUser-selectable logging intervals\u003c\/li\u003e\n\u003cli\u003eSuitable for long-term environmental monitoring\u003c\/li\u003e\n\u003cli\u003eRugged, corrosion-resistant housing\u003c\/li\u003e\n\u003cli\u003eIdeal for groundwater, surface-water and hydrological studies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"text-button blue-button\"\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" class=\"spectable\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccellcategory\" colspan=\"2\"\u003e\u003cstrong\u003ePressure (Absolute) and Water Level Measurements\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eOperation Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000 m (10,000 ft) of altitude\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eFactory Calibrated Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eBurst Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e310 kPa (45 psia) or 18 m (60 ft) depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eWater Level Accuracy*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eTypical error: ±0.1% FS, 0.4 cm (0.013 ft) water\u003cbr\u003eMaximum error: ±0.2% FS, 0.8 cm (0.026 ft) water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eRaw Pressure Accuracy**\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e±0.3% FS, 0.43 kPa (0.063 psi) maximum error\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e\u0026lt;0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\n\u003cstrong\u003ePressure\u003c\/strong\u003e \u003cstrong\u003eResponse Time (90%)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e\u0026lt;1 second at a stable temperature; measurement accuracy also depends on temperature response time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccellcategory\" colspan=\"2\"\u003e\u003cstrong\u003eTemperature Measurements\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eOperation Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e-20° to 50°C (-4° to 122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e0.10°C at 25°C (0.18°F at 77°F), see Plot A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eResponse Time (90%)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e10 minutes in water (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eStability (Drift)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e0.1°C (0.18°F) per year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccellcategory\" colspan=\"2\"\u003e\u003cstrong\u003eLogger\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eReal-time Clock\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e±1 minute per month 0° to 50°C (32° to 122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e2\/3 AA, 3.6 Volt lithium, factory-replaceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eBattery Life (Typical Use)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e5 years with 1 minute or greater logging interval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eMemory (Non-volatile)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e64K bytes memory (approx. 21,700 pressure and temperature samples)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eApproximately 154 g (5.43 oz) in air Approximately 53.9 g (1.9 oz) in fresh water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003e3.18 cm (1.25 inches) diameter, 15.24 cm (6.0 inches) length; mounting hole 6.3 mm (0.25 inches) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eWetted Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003ePolypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetyl end cap; stainless steel screws suitable for saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eLogging Interval\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eFixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOware User’s Guide for details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eLaunch Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eImmediate start and delayed start\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eOffload Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eOffload while logging; stop and offload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"speccelltitle\" width=\"125\"\u003e\u003cstrong\u003eBattery Indication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"speccelldata\"\u003eBattery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product-tabs\"\u003e\n\u003cdiv id=\"quicktabs-product-tabs\" class=\"quicktabs-wrapper quicktabs-style-onsetblue jquery-once-2-processed\"\u003e\n\u003cdiv class=\"item-list\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Onset","offers":[{"title":"Default Title","offer_id":30701988085891,"sku":"U20L-04","price":461.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2593\/8322\/products\/U20L.jpg?v=1756823253","url":"https:\/\/dynamicaquasupply.com\/en-us\/products\/hobo-u20l-04-water-level-data-logger","provider":"Dynamic  Aqua-Supply","version":"1.0","type":"link"}