SoilVUE10 TDR Soil Moisture and Temperature Profile Sensor
Campbell Scientific
Product Overview
The SoilVUE™10 is a soil water content profile sensor powered by Campbell TrueWave™ TDR technology. This sensor measures soil moisture, electrical conductivity, and temperature. It was developed with environmental researchers and environmental monitoring networks in mind, representing advancements in in-situ soil measurement for applications requiring multiple measurements within a soil profile.
Campbell Scientific's proprietary TrueWave™ TDR technology utilizes a best-in-class rise time combined with advanced waveform analysis to accurately determine the true travel time of a high-frequency pulse. This process yields a high-resolution, smooth signal, ensuring defensible measurements that can be universally compared with other TDR measurements.
Benefits and Features
- Measures volumetric water content (VWC), permittivity, electrical conductivity (EC), and temperature.
- Provides measurements at six or nine depths with a single sensor.
- Features a quick and low-impact installation process.
- Offers digital output compatible with most Campbell Scientific data loggers.
- Designed for long-term outdoor operation.
- Incorporates proven and trusted TrueWave™ TDR technology.
Detailed Description
The SoilVUE™10 comprises TDR circuitry connected to a series of six or nine helical wave guides integrated into its threaded design. This threaded construction enhances sensor contact with the soil, minimizing potential errors caused by air gaps. The TDR circuitry generates a short rise-time electromagnetic pulse, which is applied to the helical wave guides. The elapsed two-way travel time of this pulse is used to calculate the dielectric permittivity of the surrounding media, which is then used to determine the volumetric water content via a mixing model.
Installation is straightforward, requiring only a hole made by a standard 5 cm (2 in.) hand auger. Excavation machinery or specialized custom tools are not necessary.
Visual Description: The SoilVUE™10 sensor is a cylindrical device with a dark, textured surface featuring helical grooves or threads along its length. This design is intended to improve soil contact. A label on the sensor identifies it as "SoilVUE 10" and "Campbell Scientific".
Specifications
| Measurement | Details |
|---|---|
| Measurements Made | Volumetric water content (VWC), permittivity, electrical conductivity (EC), and temperature |
| Operating Temperature Range | -40° to +60°C |
| Maximum Installation Torque | 54 N m (40 ft-lb) |
| Operating Voltage Range | 9 to 36 Vdc |
| Diameter | 5.8 cm (2.3 in.) including threads; 5.2 cm (2.05 in.) without threads |
| Maximum Cable Length | 304.8 m (1,000 ft) |
| 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) |
| Current Drain (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.) |
| Measurement Depths (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 |
| Electrical Conductivity Accuracy | ±2% (0 to 2.5 dS/m); ±5% (full range) |
| Relative Dielectric Permittivity Range | 1 to 80 |
| Relative Dielectric Permittivity Accuracy | ±1 permittivity unit (between 4 and 42 permittivity) |
| Volumetric Water Content Range | 0 to 100% |
| Volumetric 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) |
Further Information
For comprehensive details, visit: www.campbellsci.com/soilvue10
