Campbell CR300 Series Product Manual page 155

Maximize life of the data logger power supply.
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Minimize polarization of polar sensors such as those for measuring conductivity, soil
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moisture, or leaf wetness. Polarization may cause measurement errors or sensor
degradation.
Improve accuracy of an LVDT measurement. The induced voltage in an LVDT decays with
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time as current in the primary coil shifts from the inductor to the series resistance; a long
integration may result in most of signal decaying before the measurement is complete.
Consult the following technical paper at
of measurement noise:
fN1 set to 4000 Hz:
fN1 set to 400 Hz:
www.campbellsci.com/app-notes
Preventing and Attacking Measurement Noise
for in-depth treatment
Problems.
17. Tips and troubleshooting 142