features high accuracy at a great price, with HOBO ease-of-use. It is ideal for recording water levels and temperatures in wells, streams, lakes, wetlands and tidal areas. The completely self-contained logger means there are no cumbersome vent tubes or desiccants to maintain. The Water Level logger can also be used in air to record barometric pressure data for accurate compensation when needed.

Features

• HOBOware software provides easy conversion to accurate water level readings, fully compensated for barometric pressure (see demo), temperature and water density
  
• Use either an extra U20-001-01 water 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)
  
• Titanium version available for saltwater (or other harsh environment) deployments*
  
• HOBOware provides comprehensive graphing, analysis and reporting
  
• Completely self-contained no-vent-tube design eliminates installation/maintenance issues and errors associated with vent tubes, such as bulkiness, desiccant maintenance, water in tubes, cuts, and decontamination between deployments.
  
• Fully sealed housing insures many years of trouble-free operation
  
• Optical/USB interface for years of reliable data offload in wet environments; no mechanical or elastomer connectors to fail
  
• HOBO Waterproof Shuttle for convenient in-field data readout and logger relaunch (can also be used as a base station)
  
• Streamlined housing for snag-free deployment in wells
  
• Lightning protection: no long signal wires, and electronics are shielded in stainless steel housing
  
• Durable ceramic pressure sensor
  
• Simple wireline mounting makes it easy to hang logger in wells, hidden from vandals
  
• Multiple-rate sampling (see demo) allows faster sampling at critical times such as when pumping starts or stops
  
• Includes calibration certificate of accuracy versus NIST-traceable standards at three pressure points distributed through the range.
  
• Resolution: 2.1mm, 4.1mm, 8.7mm respectively
  
• Accuracy: ±0.1% FS or 21mm, 41mm, 87mm respectively
  

Required Software

HOBOware software and an Optic USB Base Station and Coupler are required to operate the HOBO Water Level logger. HOBOware Pro is recommended because it includes the Barometric Compensation Assistant.

Optic USB Base Station

An Optic USB Base Station and Coupler are required for communications between the HOBO Water Level Logger and the computer. Simply plug the Optic Base Station into a USB port on the computer and the Water Level Logger into the Optic Base Station/Coupler.

• Optic USB Base Station offloads full logger in less than 30 seconds
  
• Optical interface to logger eliminates unreliable connectors
  
• Easy USB connection to computer
  
• Operating Range: 0° to 50°C
  
• The Base Station is splash-proof (connection to computer is not)

* Titanium version recommended for saltwater deployment.