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Three-electrode probe for the measurement of the soil volumetric water content. analog output. Cable length 5 m.
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Specifications
Brand
Volumetric Water Content Measuring Principle
- Capacitive
Volumetric Water Content Measuring Range
- 0 to 60 % VWC
Volumetric Water Content Resolution
- 0.1%
Volumetric Water Content Accuracy (@ 23° C)
- ± 3 % between 0 and 50 % VWC
- Standard mineral soil, EC < 5 mS/cm)
Volumetric Water Content Measuring Volume
- ∅= 100 mm x H=150 mm for the 2-electrode probe
- ∅= 80 mm x H=110 mm for the 3-electrode probe
Volumetric Water Content Sensor Operating Temperature
- -40° to +60° C
Temperature Sensor
- NTC 10 kΩ @ 25° C
Temperature Measuring Range
- -40° to +60° C
Temperature Resolution
- 0.1° C
Temperature Accuracy
- ± 0.5° C
Temperature Long-Term Stability
- 0.1° C /year
Power Supply
- 3.6 to 30 Vdc for versions with 0 to 2.5 V analog output
- 5 to 30 Vdc for versions with RS-485 output and versions with 0.5 to 3 V analog output
- 6 to 30 Vdc for versions with SDI-12 output
- 7 to 30 Vdc for versions with 0 to 5 V analog output
- 12 to 30 Vdc for versions with 0 to 10 V analog output
Consumption
- Versions with RS-485 output: 2 mA average / 15 mA peak @ 12 Vdc
- Versions with analog output: 2.5 mA average / 15 mA peak @ 12 Vdc
- Versions with SDI-12 output: 300 µA @ 12 Vdc in standby, < 15 mA @ 12 Vdc during measurement
Output
- RS-485 with Modbus-RTU protocol
- SDI-12
- 0.5 to 3 V analog voltage (0.5 V=0 %VWC or -40° C, 3 V=60 %VWC or +60° C, minimum load resistence 10 kΩ)
Materials
- Handle: thermoplastic material and epoxy resin
- Electrodes: epoxy glass, thickness 2 mm
Connection
- Fixed cable with open wires at the end, length 5 or 10 m standard
Protection Degree
- IP 67
Weight
- 150 g approx. (including the 5 m cable)
