Check the listing for details. Onset U20L-04 HOBO Water Level Data Logger, 13 ft.. Condition: New. Listed at 375.00 USD. Subscribe to Our NewsletterOnset U20L-04 HOBO Water Level Data Logger, 13 ft. Brand:OnsetModel No:U20L-04Our Model No:U20L04 Product OverviewFeaturesNOTE: This product requires HOBOware software (USB interface cable included with BHW-PRO-CD purchase, ONLY)Self-contained non-vented design enables easy deploymentIdeal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areasDepths up to 13 feetDurable ceramic pressure sensor withstands freezingHOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water densityPressure (Absolute) and Water Level Measurements U20L-04Operation Range: 0 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 altitudeFactory Calibrated Range: 69 to 145 kPa (10 to 21 psia), 0� to 40�C (32� to 104�F)Burst Pressure: 310 kPa (45 psia) or 18 m (60 ft) depthWater Level Accuracy: Typical error: �0.1% FS, 0.4 cm (0.013 ft) waterMaximum error: �0.2% FS, 0.8 cm (0.026 ft) waterRaw Pressure Accuracy: �0.3% FS, 0.43 kPa (0.063 psi) maximum errorResolution: Pressure Response Time (90%): Temperature MeasurementsOperation Range: -20� to 50�C (-4� to 122�F)Accuracy: �0.44�C from 0� to 50�C (�0.79�F from 32� to 122�F)Resolution: 0.10�C at 25�C (0.18�F at 77�F)Response Time (90%): 10 minutes in water (typical)Stability (Drift): 0.1�C (0.18�F) per yearLoggerReal-time Clock: �1 minute per month 0� to 50�C (32� to 122�F)Battery: 2/3 AA, 3.6 Volt lithium, factory-replaceableBattery Life (Typical Use): 5 years with 1 minute or greater logging intervalMemory (Non-volatile): 64K bytes memory (approx. 21,700 pressure and temperature samples)Wetted Materials: Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetyl end cap; stainless steel screws suitable for saltwaterLogging Interval: Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hoursLaunch Modes: Immediate start and delayed startOffload Modes: Offload while logging; stop and offloadBattery Indication: Battery voltage can be viewed in status screen and optionally logged in datafile; low battery indication in datafileEnvironmental Rating: IP68Environments: For use in outdoor and water environmentsMeasurements: Absolute Pressure, Barometric Pressure, Temperature and Water LevelDescription The Onset U20L-04 HOBO Water Level Data Logger, 13 ft. is a research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment. This data logger requires either the U-DTW-1 Waterproof Shuttle or the Base-U-4 Base Station for configuration and data offload. Note: U20L-04 requires the HOBOware software (free to download) to operate, and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload. Please also note that a USB interface cable comes with the purchase of a HOBOware Pro CD (BHW-PRO-CD), only.Included Components1 - HOBO Water Level Data Logger, 13 ft.Terms & ConditionsPlease note estimated delivery time above. Contact us for details or if you have a delivery requirement. We ask for your patience while striving to ensure your shipment arrives quickly and accurately.Domestic ShippingFREE Standard Shipping on items OVER $75 and less than 30lbs to continental U.S. Add $36 for AK, HI, or PR. Please contact us for shipping rates to any overseas US territories including: Northern Mariana Islands, Guam, Puerto Rico, U.S. Virgin Islands and American Samoa.PO Boxes/APOs require USPS shipping and may therefore experience longer lead times6.25% Sales Tax for shipping to MAInternational ShippingDue to international voltage requirements, please ask us prior to purchasing to confirm your product will operate correctly in your country.Please contact us for shipping rates to any overseas U.S. territories.International customers are responsible for all shipping charges, including any duties or taxes.