Accurate TDR-based soil water content, electrical conductivity, and temperature measurements from multiple depths.
Benefits and Features
l Measures VWC, permittivity, EC, and temperature at six depths over 0.5 m or nine depths over 1.0 m using one sensor
l Quick and low-impact installation
l SDI-12 version 1.4 digital output that is compatible with most Campbell Scientific data loggers
l Designed for long-term outdoor operation
Specifications
Measurements Made | Volumetric water content, permittivity, electrical conductivity, and temperature |
Maximum Installation Torque | 54 N m (40 ft⋅lb) |
Operating Voltage Range | 9 to 36 Vdc |
Diameter | 5.2 cm (2.05 in.) without threads 5.8 cm (2.3 in.) including threads |
Length | 0.55 m/1.05 m (21.5 in./41.2 in.) depending on the option ordered |
Weight | 1.9 kg/3.6 kg (4.2 lb/7.9 lb) depending on the option ordered |
Current Drain |
Active | ~64 mA (@ 12 Vdc) |
Quiescent | ~1.5 mA (@ 12 Vdc) |
Measurement Depths |
0.5 m Option | 5, 10, 20, 30, 40, and 50 cm (2, 4, 8, 12, 16, and 20 in.) |
1 m Option | 5, 10, 20, 30, 40, 50, 60, 75, and 100 cm (2, 4, 8, 12, 16, 20, 24, 30, and 40 in.) |
Electrical Conductivity |
Range | 0 to 10 dS/m |
Accuracy | ±2% (0 to 2.5 dS/m) ±5% (full range) |
Relative Dielectric Permittivity |
Range | 1 to 80 |
Accuracy | ±1 permittivity unit (between 4 and 42 permittivity) |
Volumetric Water Content |
Water Content Accuracy | ±1.5% typical with most soils
Soils with high organic matter (> 12% soil organic carbon) or high clay content (> 45% clay) may need a soil-specific calibration due to the dispersive nature of these materials. |
Soil Temperature |
Accuracy | ± 0.15°C (between -30° and +40°C) |