NRG USER MANUAL
SymphoniePLUS3 User Guide
SymphoniePLUS3_DataLogger_Manual
Rev. 17
[email protected] | Page 14
31 December 2018
Recharging the iPack Battery
Lead acid batteries such as the one used in NRG iPacks need to be kept fully charged. It is very important
to recharge the iPack before installing it in the field, especially after programming or communications
testing.
In addition, all lead acid batteries lose their capacity over time and will need to be replaced eventually.
The battery must be recharged if an iPack is kept in storage or is unused for any period of time.
An iPack battery charger is available from NRG Systems (item #3615).
Environmental Considerations
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Grounding requirements are site-specific; determine soil type before installation.
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Sensor cables become less flexible and are more easily damaged at very low temperatures.
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Make sure that all sensor cables are securely fastened to the tower so they do not flap in the
wind.
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Be sure that all connections are tight and securely fastened to ensure reliability in high winds.
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Low temperatures can diminish battery performance. Always use good quality alkaline batteries,
and always stay within reasonable limits when establishing your battery replacement schedule.
Replace alkaline batteries at least once per year to avoid leakage.
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Make sure that all sensor cables are spiral wrapped (2 wraps every three meters) around the
tower to discourage natural frequency vibrations. Use a high quality electrical tape rated for
extreme conditions to further secure the cables to the tower.
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Coat terminal connections with anti-corrosive or petroleum jelly to reduce corrosion.
Site Records
Understanding the assignment of site numbers is the single most important step in setting up a wind
assessment system.
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The SymphoniePLUS3 logger system requires that you assign a unique site number to each logger
site.
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The assigned site number must stay with the site even if the tower, sensors, and logger are
dismantled and moved to another location.
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An abandoned site number is never re-used or assigned to a new location. It remains as a
reference to the historical data from the abandoned site.
An accurate description of each site is essential to your wind measurement program. Your
SymphoniePLUS3 logger can be configured to label datasets with the following information:
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Latitude and longitude (programmed automatically when using iPackGPS)
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Site elevation (programmed automatically when using iPackGPS)
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Sensor heights
It is advisable to record additional site information that may help in the analysis of your data:
