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The HOBO U20L Series is a low-cost, research-grade 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.
The U20L Data Loggers are for use in Outdoor and Underwater environments
Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20 Range (not the U20L series)
Measurements:The U20L series Data Logger supports the following measurements:
View an introduction to the new HOBO U20L low-cost, research-grade water level loggers setting a new standard for price/performance for high-accuracy water level and temperature monitoring.
Webinar: Time-saver tips for deploying the new HOBO U20L Water Level data logger to ensure good quality data.
** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.* Water Level Accuracy: With accurate reference water level measurement, known water density, accurate Barometric Compensation Assistant data, and a stable temperature environment.
*** Changes in Temperature: Allow 20 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%.
IMPORTANT: This HOBO data logger requires HOBOware software and a communications cable (see related products below) HOBOware Software is a FREE download
Note: This logger also operates with the advanced HOBOware-Pro Software