HOBO U20L-04 Water Level (13 ft) Data Logger

Brand: Onset Hobo
Model: U20L-04

low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments.

Product Information



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.


Helpful Links:
Barometric Pressure Compensation Assistant Demo
Multi-rate Sampling Demo

Highlighted Features
Self-contained non-vented design enables easy deployment
Ideal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas
Depths up to 13 feet
Durable ceramic pressure sensor withstands freezing
HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure (see demo), temperature, and water density
Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20-001-04 (freshwater) or U20-001-04-Ti (saltwater).


In what environment does this data logger operate?
This data logger operates in outdoor and underwater environments.


What measurements does this data logger support?
The U20L-04 data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Temperature and Water Level