Difference between revisions of "Soil moisture - Frequency domain (SMT100)"
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==Method:== | ==Method:== | ||
| − | Frequency Domain | + | combination of Frequency Domain Reflectometry and Time domain Reflectometry |
==Equipment:== | ==Equipment:== | ||
| − | + | * SMT-100-sensor (TRUEBNER Instruments) with customizable cable length | |
==Advantages:== | ==Advantages:== | ||
| − | Low cost | + | * "quasi-TDR" method supposedly yields better results in clay soils |
| − | Easy to install | + | * Low cost |
| + | * Easy to install | ||
| + | * compatible with many loggers (RS485, SDI-12 or analogue protocol) | ||
==Disadvantages:== | ==Disadvantages:== | ||
| − | Soil specific calibration required for highest accuracy | + | * Soil specific calibration required for highest accuracy |
==What to watch out for:== | ==What to watch out for:== | ||
| − | Good contact between probe and medium required | + | * Good contact between probe and medium required |
| + | * coarse soil may require extra tool for penetrating the soil before installing the sensor | ||
| + | ==Links== | ||
| + | Manufacturer: | ||
| + | * [https://www.truebner.de/de/smt100.php Truebner] | ||
| + | Projects that used the above equipment: | ||
| + | * [http://teodoor.icg.kfa-juelich.de/overview-de TERENO] | ||
| + | * [http://pyrophob.de PYROPHOB] | ||
[[Category:Equipment]] | [[Category:Equipment]] | ||
| + | [[Category: Soil Moisture]] | ||
| + | [[Category:Temperature]] | ||
Latest revision as of 08:39, 24 May 2022
Parameter to be measured:
Soil moisture, permittivity, soil temperature
Method:
combination of Frequency Domain Reflectometry and Time domain Reflectometry
Equipment:
- SMT-100-sensor (TRUEBNER Instruments) with customizable cable length
Advantages:
- "quasi-TDR" method supposedly yields better results in clay soils
- Low cost
- Easy to install
- compatible with many loggers (RS485, SDI-12 or analogue protocol)
Disadvantages:
- Soil specific calibration required for highest accuracy
What to watch out for:
- Good contact between probe and medium required
- coarse soil may require extra tool for penetrating the soil before installing the sensor
Links
Manufacturer:
Projects that used the above equipment: