background image

HOBO U20L Water Level Logger (U20L-0x) Manual

 

 

 

1-800-LOGGERS (564-4377) • 508-759-9500 

www.onsetcomp.com/support/contact 

© 2014–2018 Onset Computer Corporation. All rights reserved. Onset, HOBO, and HOBOware are trademarks 
or registered trademarks of Onset Computer Corporation. All other trademarks are the property of their 
respective companies. 

 

17153-G 

 

 

WARNING:

 Do not cut open, incinerate, heat above 

100°C (212°F), or recharge the lithium battery. The battery 
may explode if the logger is exposed to extreme heat or 
conditions that could damage or destroy the battery case. 
Do not dispose of the logger or battery in fire. Do not 
expose the contents of the battery to water. Dispose of the 
battery according to local regulations for lithium batteries. 

Summary of Contents for U20L-01

Page 1: ...1 ft of water at 3 000 m 10 000 ft of altitude Factory Calibrated Range 69 to 400 kPa 10 to 58 psia 0 to 40 C 32 to 104 F Burst Pressure 500 kPa 72 5 psia or 40 8 m 134 ft depth Water Level Accuracy T...

Page 2: ...c sensor in acetal end cap stainless steel screws suitable for saltwater Logging Interval Fixed rate or multiple logging intervals with up to 8 user defined logging intervals and durations logging int...

Page 3: ...fast moving weather events so you can generally use barometric pressure readings that are taken within 15 km 10 miles of the logger or more without significantly degrading the accuracy of the compens...

Page 4: ...e sensor so no vent tube is required The small size of the logger is convenient for use in small wells and allows the logger to be mounted and or hidden in the field Follow these guidelines when deplo...

Page 5: ...ater level is being referenced to some point above the logger such as the top of the stilling well record the water level as a negative number If the water depth is being referenced to a point below t...

Page 6: ...n example of when to enter the water level as a positive number Enter the water level as a negative number if it is measured downward from a reference point above the water s surface such as the top o...

Page 7: ...ensor could have drifted as much as 0 5 FS by the end of the deployment It is possible to determine the actual amount of drift during a deployment if a reference level is taken at the beginning and th...

Page 8: ...All other trademarks are the property of their respective companies 17153 G WARNING Do not cut open incinerate heat above 100 C 212 F or recharge the lithium battery The battery may explode if the log...

Reviews: