{"product_id":"hobo-u24-001-freshwater-conductivity-data-logger","title":"Hobo Conductivity Data Logger for Freshwater, U24-001","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2593\/8322\/files\/Hobo_large.gif?v=1550103141\" alt=\"\" style=\"margin-right: 20px; margin-bottom: 1px; float: left;\" width=\"144\" height=\"48\"\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eProduct Code: U24-001\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe HOBO U24-001 Freshwater Conductivity Data Logger is a compact, rugged data logger designed to measure and record water conductivity and temperature for long-term freshwater monitoring. It can also provide calculated specific conductance at 25°C using the HOBOware Conductivity Assistant. The U24-001 is well suited to monitoring streams, lakes, aquifers and other freshwater environments where changes in conductivity can indicate changes in water quality, saltwater intrusion, road runoff, agricultural runoff or other pollution sources.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe U24-001 provides two calibrated conductivity ranges: 0 to 1,000 µS\/cm and 0 to 10,000 µS\/cm, with extended ranges of up to 2,500 µS\/cm and 15,000 µS\/cm respectively. Conductivity resolution is 1 µS\/cm, while temperature is measured with 0.01°C resolution and 0.1°C accuracy at 25°C. Sensor drift is less than 3% per year, excluding drift caused by fouling.\u003c\/p\u003e\n\u003cp\u003eThe logger stores up to 18,500 temperature and conductivity measurements when one conductivity range is used, with a 64 KB memory capacity. Sampling intervals can be programmed from 1 second to 18 hours, including multiple-rate sampling with up to eight user-defined intervals. A typical battery life of approximately three years is achieved when logging at one-minute intervals.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eMemory:\u003c\/b\u003e\u003cspan\u003e 18,500 temperature and conductivity measurements when using one conductivity range; 14,400 sets of measurements when using both conductivity ranges (64kbytes). \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eSample rate:\u003c\/b\u003e\u003cspan\u003e 1 second to 18 hrs, fixed or multiple-rate sampling with up to 8 user-defined sampling intervals. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eBattery life:\u003c\/b\u003e\u003cspan\u003e 3 years (@ 1 min logging). \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eMaximum Depth:\u003c\/b\u003e\u003cspan\u003e 70 m (225'). \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eOperating Range:\u003c\/b\u003e\u003cspan\u003e -2 to 36°C (28° to 97°F) - non freezing. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eWeight:\u003c\/b\u003e\u003cspan\u003e 6.82 oz.; buoyancy in freshwater: -2.11 oz. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eSize:\u003c\/b\u003e\u003cspan\u003e 1.25\" diameter x 6.5\", 1\/4\" hole.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eConductivity Range:\u003c\/b\u003e\u003cspan\u003e Low Range: 0 to 1,000 µS\/cm; Full Range: 0 to 10,000 µS\/cm. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eTemperature Range:\u003c\/b\u003e\u003cspan\u003e 41°F to 95°F (5°C to 35°C). \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eConductivity Accuracy:\u003c\/b\u003e\u003cspan\u003e 3% of reading, or 5 µS\/cm, whichever is greater. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eTemperature Accuracy:\u003c\/b\u003e\u003cspan\u003e 0.2°F (0.1°C). \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eConductivity Resolution:\u003c\/b\u003e\u003cspan\u003e 1 uS\/cm. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cb\u003eResponse time:\u003c\/b\u003e\u003cspan\u003e 1 second to 90% of change.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e  HOBO data loggers require either the \u003cstrong\u003e\u003ca href=\"https:\/\/dynamic-aqua-supply.myshopify.com\/products\/copy-of-onset%C2%AE-universal-optic-usb-base-station\"\u003eHOBO Waterproof Shuttle\u003c\/a\u003e\u003c\/strong\u003e or \u003cstrong\u003e\u003ca href=\"https:\/\/dynamic-aqua-supply.myshopify.com\/products\/onset%C2%AE-universal-optic-usb-base-station\"\u003eUniversal Optic USB Base Station \u003c\/a\u003e \u003c\/strong\u003eand a USB Cable. (Note: A USB cable is included w\/ \u003cstrong\u003e\u003ca href=\"https:\/\/dynamic-aqua-supply.myshopify.com\/products\/hoboware%C2%AE-pro-software\"\u003eHOBOware Pro\u003c\/a\u003e\u003c\/strong\u003e CD or USB software purchase). \u003cstrong\u003e\u003ca href=\"https:\/\/dynamic-aqua-supply.myshopify.com\/products\/hoboware%C2%AE-pro-software\"\u003eHOBOware Pro\u003c\/a\u003e\u003c\/strong\u003e is required when using the U-DTW-1 \u003cstrong\u003e\u003ca href=\"https:\/\/dynamic-aqua-supply.myshopify.com\/products\/copy-of-onset%C2%AE-universal-optic-usb-base-station\"\u003eHOBO Waterproof shuttle\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Onset","offers":[{"title":"Default Title","offer_id":15915651694635,"sku":"U24-001","price":1203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2593\/8322\/products\/U24-001.jpg?v=1553712249","url":"https:\/\/dynamicaquasupply.com\/en-us\/products\/hobo-u24-001-freshwater-conductivity-data-logger","provider":"Dynamic  Aqua-Supply","version":"1.0","type":"link"}