Difference between revisions of "Soil moisture - capacitance (EC-10)"
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Other related web sites: | Other related web sites: | ||
*[http://www.decagon.com/manuals/echomanual.pdf EC-5, EC-10, EC-20 Manual] | *[http://www.decagon.com/manuals/echomanual.pdf EC-5, EC-10, EC-20 Manual] | ||
| − | [http://www.decagon.com/ | + | *[http://www.decagon.com/assets/Uploads/Calibration-Equations-for-the-ECH2O-EC-5-ECH2o-TE-and-5TE-Sensors.pdf Calibration Equations or the ECH2O EC-5, ECH2O-TE and 5TE Sensors] |
*http://www.decagon.com/Ech2o/ | *http://www.decagon.com/Ech2o/ | ||
*[http://www.czen.org/files/2004_ECH2O_calibration_summary.ppt USGS ECH2O calibration summary] | *[http://www.czen.org/files/2004_ECH2O_calibration_summary.ppt USGS ECH2O calibration summary] | ||
Revision as of 15:34, 17 September 2010
Parameter to be measured:
Soil moisture
Method:
Capacitance
[[Image:]]
Equipment:
- EC-5
- EC-10 (ECH2O)
- EC-20
Advantages:
- Relatively cheap
- Easy to install
- Compatible with many loggers
Disadvantages:
- Only for low salinity soils (Decagon has developed newer ECH2O probes that are less sensitive to salinity issues, e.g. the EC-5)
- Calibration needed
- Small measurement volume compared to other sensors
What to watch out for:
- Temperature sensitivity
- Careful installation, air gaps have a sustainable influence on the measurement compared to other sensors because of the small measurement volume
Problems/Questions:
Links
Projects that used the above equipment:
Other related web sites:
- EC-5, EC-10, EC-20 Manual
- Calibration Equations or the ECH2O EC-5, ECH2O-TE and 5TE Sensors
- http://www.decagon.com/Ech2o/
- USGS ECH2O calibration summary
- USGS ECH2O probe calibration protocol (destructive harvest)
- sowacs.com - the central resource for soil moisture measurement
References
Bogena, H. R., Huisman, J. A., Oberdoerster, C., Vereecken, H. (2007), Evaluation of a low-cost soil water content sensor for wireless network applications, j.jhydrol., 344(1-2), 32-42.