14.27 Soil Moisture Measuring System Watermark
Soil moisture sensors that measure the moisture tension in the soil are read out with the soil moisture meter Watermark. The measuring principle is similar to that of the gypsum block system. The special sensors however do not dissolve in the soil and have a more consistent distribution of pores so that more accurate measurements are possible.
- Cheap but serious measuring instrument
- Results directly expressed as soil suction
- Range allows measuring trees and dry crops
- Also good for irrigation advice
- No field maintenance of probes
- Stable long lasting salinity insensitive probes
- Easy read-out with simple cheap instrument
- Temperature can be corrected
- Cheap simple 8 ports datalogger available
| Maximum measuring depth | > 100 cm |
|---|---|
| Measuring range | 0...2000 hPa |
| Registration type | logging |
| Measuring accuracy | ± 5% |
| Reading accuracy | 0.5% |
| Volume of material needed | 30 ml |
