Difference between revisions of "Soil matric potential - tensiometer (T4)"
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(New page: ==Parameter to be measured:== Soil matric potential ==Method:== Tensiometer ==Equipment:== T4 with external refilling option ==Advantages:== *Very fast response *Reliable *Refilling...) |
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==Parameter to be measured:== | ==Parameter to be measured:== | ||
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*Freezing conditions at fieldsite: at shallow soildepth (do not install year-round) and above-ground (insulate the shaft with PVC and isolation material) | *Freezing conditions at fieldsite: at shallow soildepth (do not install year-round) and above-ground (insulate the shaft with PVC and isolation material) | ||
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==Problems/Questions:== | ==Problems/Questions:== | ||
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Other related web sites: | Other related web sites: | ||
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==References== | ==References== | ||
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[[Category:Equipment]] | [[Category:Equipment]] | ||
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Latest revision as of 13:56, 7 November 2013
Parameter to be measured:
Soil matric potential
Method:
Tensiometer
Equipment:
T4 with external refilling option
Advantages:
- Very fast response
- Reliable
- Refilling possible without taking the probes out of the soil
- Great range: -1000 to 0 to 850 hPa
Disadvantages:
- Accuracy could be a disadvantage (+/- 0.25 kPa) according calibration sheet) depending on objective of study
- Some of installed tensiometers showed a stepwise output during small changes in soil matric potential (e.g. during drainage) in the order of 0.25 kPa
What to watch out for:
- Freezing conditions at fieldsite: at shallow soildepth (do not install year-round) and above-ground (insulate the shaft with PVC and isolation material)
Problems/Questions:
Links
Projects that used the above equipment:
- PhD project WS10 HJ Andrews Experimental Forest
Other related web sites: