Section 7: Diagnostics and Troubleshooting
HOBO Energy Logger User’s Guide
37
Problem Solution
Individual
modules or
sensors are not
found, or are
missing in
HOBOware’s
Launch Logger
dialog
If a FlexSmart module or Smart Sensor is removed
and then immediately reconnected, it may not be
detected, and therefore will not appear on the
Launch Logger dialog. Click the
Refresh
button on
the Launch Logger dialog.
Check for a loose connection between the module or
sensor and the logger.
Make sure you have not exceeded 100 meters (328
ft) of network cable for all Smart Sensors.
No modules or
sensors appear in
HOBOware’s
Launch Logger
dialog
Remove all modules and sensors except one, click
Refresh,
and see if the module or sensor appears on
the Launch Logger dialog. Continue to remove and
reconnect modules and sensors one at a time until
you identify the culprit. If you find the bad module
or sensor, or if none of the modules or sensors
communicates, contact your Onset Authorized
Dealer or Onset Technical Support.
Batteries die
prematurely
Check for excessive moisture or contamination in
the logger enclosure. Severe and/or repeated
condensation in the logger enclosure can lead to
short circuits and battery failure. It may be
necessary to place the logger in an additional
weatherproof case with desiccant inside the
enclosure to prevent condensation.
Make sure that both the logging and sampling
intervals are set for at least one minute or greater.
Fast sampling and logging intervals (shorter than
one minute) will rapidly deplete the battery. For
more information, refer to “Maximizing battery life”
on p. 25.
Check for damaged wiring and malfunctioning
modules and sensors. Damaged cables or connectors
can result in complete or partial short circuits that
will rapidly drain batteries.
Section 7: Diagnostics and Troubleshooting
38
HOBO Energy Logger User’s Guide
Problem Solution
Datafile contains
errors
If you are missing data for a particular module or
sensor, check that it was properly installed and
configured. Remove and reconnect the module or
sensor, and check the status in HOBOware to verify
that it can report accurate readings. If you find that it
is not communicating, it may be damaged. Contact
your Onset Authorized Dealer or Onset Technical
Support.
Excitation power
stops working
The batteries have dwindled to 6.8 V while
excitation was in use. The batteries are nearly dead
and must be changed.
Datafile cannot be
opened
In rare circumstances, the datafile may have become
corrupted. Read out the logger again and try opening
the file again. If that does not work, contact your
Onset Authorized Dealer or Onset Technical
Support.
Logger is not
found
Check and replace the batteries, and reconnect the
logger.
Check communication cable connections.
Review the Communication preferences in
HOBOware.
Check the computer’s COM port/USB settings.
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