Section 2: Setup and Test
HOBO Energy Logger User’s Guide
15
Reading out Data
Use HOBOware to read out data from the logger. Reading out copies
data from the logger to your computer, allowing you to save the data in a
.dtf file and view the plot.
You can read out while the logger is recording data, or after the logger
has been stopped. Refer to the
HOBOware User’s Guide
for details about
reading out, saving, and displaying data.
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.
2.
Access the Launch window and verify that HOBOware 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 warm up 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 warm up time for rated transducer
accuracy.
•
The Energy Logger disables excitation when the battery pack
voltage falls to approximately 6.8V (0.85 volts per cell). The
Section 2: Setup and Test
16
HOBO Energy Logger User’s Guide
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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