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HOBO U20 Water Level Data Logger - 250 ft - SS Housing

  • HOBO U20 Water Level Data Logger - 250 ft - SS Housing

HOBO U20 Water Level Data Logger - 250 ft - SS Housing

Part Number: U20-001-03

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  • Measure and Log Water Level (Pressure) and Temperature Readings

  • -20°C to 50°C Temperature Measurement Range with ±0.44°C Accuracy

  • Factory-Replaceable 2/3 AA 3.6 Volt Lithium Battery with 5 Year Life @ 1 Minute Sampling Rate

  • No-Vent-Tube Design for Easy Reliable Deployment and Durable Ceramic Pressure Sensor

  • Water Depth Range: 0 to 250 ft with Stainless Steel Housing

Requires HOBOware Pro Software (Version 3.2+) and an Optic USB Base Station (BASE-U-4) or Shuttle Data Transporter (U-DTW-1)

Please allow 3-5 days for this item to ship.


Water Level Data Logger Specifications

Data Channels 2 Channels (Water Level and Temperature)
Water Level (Pressure)
up to 250ft Depth
Range*: 0 to 76 m (0 to 250 ft); 0 to 850 kPa (0 to 123 psia)
Factory Calibrated Range**: 69 to 850 kPa (10 to 123.3 psia)
Water Level Accuracy***: 3.8cm (0.125 ft) water; ±0.05% FS
Raw Pressure Accuracy: ±0.3% FS, 0.62 kPa (0.09 psi) Max
Resolution: 0.87 cm (0.028 ft), < 0.085 kPA (0.012 psi)
Burst Pressure: 1200 kPa (174 psia) or 112m (368 ft) depth
Response Time (Pressure): < 1 Second to 90%
Response Time (Thermal): About 10 Minutes in Water to Achieve Full Temperature Compensation of the Pressure Sensor
* Nominal Values at Sea Level
** @ 0°C to 40°C Temperature Range
*** Typical Maximum Error Over the Full Temperature and Pressure Calibrated Range
Temperature Range: -20°C to 50°C (-4°F to 122°F)
Accuracy: ±0.37°C @ 20°C; ±0.5°C @ -5°C to 50°C
Resolution: 0.1°C @ 20°C; 0.2°C @ -5°C to 50°C
Response Time: 3.5 Minutes in Water to 90%
Stability (Drift): ≤0.1°C/year (≤0.18°F/year)
Data Storage Capacity 21,700 Total Readings (10,850 Pressure and Temperature)
Sampling Rate 1 Second to 18 Hours (User-Specified)
Up to 8 Sampling Intervals User-Defined
Battery 2/3 AA 3.6 Volt Lithium Battery - Factory Replaceable
Battery Life 5 Years @ 1 Minute Sampling Rate
(Dependant Upon Environment and Operating Range)
Battery Status Indication Battery status displayed at launch or with status screen; Battery voltage can be logged
Environment Waterproof; suitable for deployment in water or air, case materials resistant to fuels, solvents and lubricants.
Note: Stainless Steel Housing is NOT Designed for Saltwater Deployments.
Operating Range Temperature: -20°C to 50°C (4°F to 122°F)
Sample & Event Logging Samples: Recorded Sensor Measurements
Events: Logger Activity (ie: Bad Battery, Host Connected)
Wetted Materials Vitron® O-Rings, Acetyle Cap and Ceramic Sensor
316 Stainless Steel or Titanium Housing
Software Compatibility HOBOware PRO Version 3.2+
OS Compatibility Windows: Windows 10, 8.1, 8 and 7
Mac: OS X 10.9.x, 10.10.x and 10.11.x
Operation Indicator Red LED in Communications Window
Start Modes Immediate Start, Programmable Start Time/Date
Offload Modes Offload while logging or stop and offload
Real-Time Clock ±1 minute per month 0°C to 50°C (32°F to 122°F)
Standards Compliance CE
Weight 210 g (7.4 oz)
Dimensions Logger: 24.6mm D x 150mm L (0.97" D x 5.9" L)
Mounting Hole: 6.3mm (0.25") Diameter

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