U20
U20

U20(L) Water Level Dataloggers

The HOBO U20(L) family of dataloggers are low-cost, non-vented research-grade data loggers for continuously measuring water level and temperature.

The HOBO U20 is a high quality stainless steel or titanium pressure logger for research grade monitoring.

The HOBO U20L is a lower cost data logger featuring polypropylene housing suitable for use in both fresh and salt water.

  • Self-contained non-vented design enables easy deployment
  • Models available for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas
  • A range of models to measure depths up to 76 m
  • Durable ceramic pressure sensor withstands freezing
  • Use either an extra U20 (4m) level logger, a HOBO Weather Station, or import ASCII barometric data for barometric compensation when needed (one barometric data set can be used with all water level loggers in that area)
  • HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water density
  • Optical/USB interface for years of reliable data offload in wet environments
  • Compatible with the HOBO Waterproof Shuttle for convenient in-field data readout and logger relaunch (can also be used as a base station)

 

Specifications

  U20-001-04 (-Ti)
U20-001-01 (-Ti)
U20-001-02 (-Ti)
U20-001-03 (-Ti)
Body materials: Stainless steel or Titanium (-Ti)
NIST: NIST Traceable Calibration Certificate Included
Operation Range:
       
    kPa 0 to 145kPa 0 to 207kPa 0 to 400kPa
0 to 850kPa
    psia 0 to 21 psia 0 to 30 psia 0 to 58 psia 0 to 123 psia
    approx. water depth at SL 0 to 4 m 0 to 9 m
0 to 30 m 0 to 76 m
Burst Pressure 310 kPa; 18m 310 kPa; 18m 500 kPa; 40m 1200 kPa; 112m
Water Level Accuracy:        
   Typical: ±0.075% FS, 0.35 cm ±0.05% FS, 0.5 cm ±0.05% FS, 1.5 cm ±0.05% FS, 3.8 cm
   Maximum: ±0.15% FS, 0.6 cm ±0.1% FS, 1.0 cm ±0.1% FS, 3.0 cm ±0.1% FS, 7.6 cm
Resolution: <0.014 kPa (0.002 psi), 0.14 cm <0.02 kPa (0.003 psi), 0.21 cm <0.04 kPa (0.006 psi), 0.41 cm <0.085 kPa (0.012 psi), 0.87 cm

 

  U20L-04 U20L-01 U20L-02
Body material: Polypropylene
NIST: No Calibration Certificate
Operation Range:
     
    kPa 0 to 145kPa 0 to 207kPa 0 to 400kPa
    psia 0 to 21 psia 0 to 30 psia 0 to 58 psia
    approx. water depth at SL 0 to 4 m 0 to 9 m
0 to 30 m
Burst Pressure 310 kPa; 18m 310 kPa; 18m 500 kPa; 40m
Water Level Accuracy:      
   Typical: ±0.1% FS, 0.4 cm ±0.1% FS, 1.0 cm ±0.1% FS, 3.0 cm
   Maximum: ±0.2% FS, 0.8 cm ±0.2% FS, 2.0 cm ±0.2% FS, 6.0 cm
Resolution: <0.014 kPa (0.002 psi), 0.14 cm <0.02 kPa (0.003 psi), 0.21 cm <0.04 kPa (0.006 psi), 0.41 cm

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Choosing a Water Level Logger: 5 Things You Should Know


File Size 1.74MB   Filename choosing_a_water_level_logger_wp.pdf   Download

U20 stainless brochure


File Size 148KB   Filename onset_hobo_u20_water_level_data_loggers.pdf   Download

U20L brochure


File Size 209KB   Filename onset-hobo-u20l-water-level-data-logger-series.pdf   Download
U20L

U20L

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