
- Description
 - Specifications
 - Documents
 
- Depths up to 30 feet
 - 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
 - Durable ceramic pressure sensor withstands freezing
 - HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water density
 - Note: A calibration certificate is not offered for this logger.
 
The HOBO by Onset U20L-01 is a low-cost, 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.
Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20-001-01 (freshwater) or U20-001-01-Ti (saltwater).
Important Info: This logger requires HOBOware Pro software and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload.
