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Quick Start for the HOBO® U20L Water Level Logger
Before you begin: Barometric pressure data at the site where the logger is being deployed is required for accurate water level data. Using a HOBO logger
for recording barometric pressure data is recommended.
If using a HOBO Waterproof Shuttle (U-DTW-1) with this logger, the shuttle must have firmware version 3.2.0 or later installed. See the Onset website or
contact Onset Technical Support if your shuttle needs this upgrade.
Open HOBOware® Pro software. (Install first if necessary.)
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The HOBO
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(COUPLER2-C) and USB Optic Base Station (BASE-U-4)
or HOBO Waterproof Shuttle (U-DTW-1) to connect
to the computer. Follow the instructions that came
with your base station or shuttle to attach the base
station or shuttle to a USB port on the computer.
1. Unscrew the black plastic end cap from the
2. Attach the coupler to the base station or shuttle.
3. Insert the logger into the coupler, aligning the
Note: If you are using the HOBO Waterproof Shuttle,
briefly press the coupler lever to put the shuttle into
base station mode.
From the Device menu in HOBOware, select Launch and configure the launch settings. Make sure both the Abs. Pressure and
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Temperature sensors are selected (temperature is required for temperature compensation of pressure) and click the Start button in
the lower right corner to send the launch settings to the logger. Note that the Start button text changes based on your Start Logging
selection.
Water Level Logger requires a coupler
logger by turning it counter-clockwise.
bump on the coupler with the groove on the
logger. Be sure it is properly seated in the
coupler. It may take a few seconds for the new
hardware to be detected by the computer.
Align bump on the coupler
with the groove on the logger
Coupler
To base station
or shuttle
Logger
Coupler lever (for use with
HOBO Waterproof Shuttle
End cap
Deploy the logger, making sure the end cap is in place. Take water level reference readings at the beginning and end of each
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deployment.
Use the HOBO Waterproof Shuttle or base station to read out the logger.
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Relaunch and redeploy logger as needed.
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Plot data from logger. Print the plot, export data, save it as a project file, and more.
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For detailed specifications and information about this logger, refer to the complete product manual.
© 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.
This product has been manufactured by Onset Computer Corporation and in compliance with Onset’s ISO 9001:2015
Quality Management System.
17150-D MAN-QSG-U20L
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