Section 7: Diagnostics and Troubleshooting
HOBO Energy Logger User’s Guide
35
delayed or interval start, check the date and time you selected and make
sure the
Delayed Start
indicator is blinking. If you configured the logger
to launch with the
Trigger
start option, press and hold the
Push to Start
button on the logger until all the indicators flash at once (at least two
seconds).
Memory Low (Red)
If the logger was launched with wrapping disabled, this indicator blinks
when less than 25% of memory remains for saving data. The logger will
continue to run until all memory is used.
If the logger was launched with wrapping enabled, this indicator should
not blink.
Battery Low (Red)
This indicator blinks when battery power is at less than 25% capacity, or
if the batteries are installed improperly. The logger will continue logging
until the batteries are dead; however, you should read out the data and
replace the batteries as soon as possible, before the batteries die, and then
relaunch the logger. Or, attach an external power source if possible.
If this indicator continues to blink even after you have replaced the
batteries:
•
Check that the batteries are installed properly. If the polarity of
any of the batteries is incorrect, this indicator will blink.
•
Make sure you are using the correct battery type. The logger uses
eight 1.5 volt AA alkaline or lithium batteries. The battery type
must be specified correctly on the Launch Logger dialog for the
correct battery status to be reported.
•
Make sure all batteries are of the same type - either all alkaline,
all enhanced alkaline, or all lithium. Never mix battery types.
•
Check the battery expiration date. Verify that the expiration date
is at least two years from the current date. Batteries can lose
significant capacity if stored at elevated temperatures.
•
Check the voltage of the batteries with a voltmeter. Alkaline
batteries should be at least 1.5 V per cell when new; fresh
lithium batteries should be 1.6 V per cell.
Section 7: Diagnostics and Troubleshooting
36
HOBO Energy Logger User’s Guide
Sensor Fail (Red)
This indicator blinks when there is or has been a FlexSmart module or
Smart Sensor communication failure.
Note:
If the
Sensor Fail
indicator is blinking, you should read out the
logger, investigate the problem, and then relaunch the logger.
•
If the
Sensor Fail
indicator is blinking in conjunction with the
Logging
indicator, there was a communication failure, but the
system has recovered. There may be an intermittent problem.
Try checking the FlexSmart modules and Smart Sensors one at a
time to make sure they are all communicating. If you find a bad
module or sensor, or if no module or sensor communicates,
contact your Onset Authorized Dealer or Onset Technical
Support.
•
If the
Sensor Fail
indicator is the only one that is blinking, at
least one FlexSmart module or Smart Sensor is currently not
communicating. You should investigate this problem
immediately. Look for a loose connection, which could cause
bad electrical contact with a module or sensor. If found, remove
the offending module or sensor and check its wires and
connector for damage and/or signs of moisture.
Problems and Solutions
Problem Solution
No status
indicators are
blinking
The indicators are very faint under direct sunlight or
bright fluorescent lighting. If no indicators appear to
be blinking, shield the logger from the light and
check the indicators again.
Check the status in HOBOware:
•
Make sure the batteries are not dead.
Batteries should have at least 1 volt per cell.
•
The memory may be full. Read out the
logger and relaunch.
•
The logger may not have been launched.
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