Chapter 5: Maintenance
HOBO Energy Logger Pro User’s Guide 21
Verifying logger operation
It is a good idea to quickly test the logger before each deployment, especially if the logger has been stored unused
for a long period. To test the logger, take the following steps:
1. Set up the logger (attach sensors, etc.) and start HOBOware Pro.
2. Access the Launch window and verify that HOBOware Pro detects all of the connected modules and
sensors.
3. Enter a logging interval of a few seconds so that your test will yield enough data to look at, and select the
logger’s internal battery channel. Make sure the logger is configured to start logging immediately upon
launch.
Important: If you are using both channels of a TRMS module, you must select a minimum 2-second logging
interval. If all TRMS modules are configured for single-channel use, you can use a 1-second logging
interval.
4. If you are using sensor excitation, configure it for each FlexSmart Analog module channel. Sensors
purchased from Onset include sensor connection instructions, including warmup time (if required). For
sensors not supplied by Onset, consult the sensor manufacturer’s datasheet for warmup time requirements.
• Many sensors specifications assume that the sensor will be powered continuously, but may be capable of
switched operation to conserve battery life. You may need to experiment to determine the best warmup
time for rated transducer accuracy.
• The Energy Logger Pro disables excitation when the battery pack voltage falls to approximately 6.8V
(0.85 volts per cell). The batteries are essentially dead at this point and should be changed. The logger
will continue to log, but data for channels using excitation will be invalid.
5. Click
Launch to start the logger.
6. After a couple of minutes, read out the logger. (Answer
Yes when prompted to stop the logger.)
7. Make sure the data appears normal for all sensors.
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