TEROS 10 Tech Specs
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Technical Specifications

Volumetric water content (VWC)
Mineral soil calibration: 0.0000 – 0.6400 m3/m3
Soilless media calibration: 0.0000 – 0.7000 m3/m3
Apparent dielectric permittivity (εa): 1 (air) to 80 (water)
NOTE: The VWC range is dependent on the media the sensor is calibrated to. A custom calibration will accommodate the necessary ranges for most substrates.
0.0010 m3/m3
Mineral soil calibration: ±0.03 m³/m³ typical in mineral soils that have solution EC <8 dS/m
Soilless media calibration: ±0.05 m³/m³ typical in media that has a solution EC <8 dS/m
Medium specific calibration: ±0.01–0.02 m³/m³ in any porous medium
Apparent dielectric permittivity (εa): 1–40 (soil range) , ±1 εa (unitless) 40–80, 15% of measurement
Measurement Specifications
Dielectric measurement frequency
70 MHz
Measurement volume
Communication Specifications
1,000 - 2,500 mV
Data Logger Compatibility
Data acquisition systems capable of switched 3.0–15 VDC excitation and single-ended voltage measurement at greater than or equal to 12-bit resolution.
See compatibility chart
Physical Specifications
Length: 5.1000 cm (2.02 in)
Width: 2.4000 cm (0.95 in)
Height: 7.5000 cm (2.95 in)
Needle length
5.4000 cm (2.11 in)
Operating Temperature Range
Minimum: -40 °C
Typical: NA
Maximum: 60 °C
NOTE: Sensors may be used at higher temperatures under certain conditions; Contact Customer Support for assistance.
Cable Length
5 m (standard)
40 m (maximum custom cable length)

NOTE: Contact Customer Support if a nonstandard cable length is needed.
Cable Diameter
0.165 ±.004 (4.20 ± .10 mm) with min. jacket of .030 (.76 mm)
Connector Types
3.5-mm stereo plug connector or stripped and tinned wires
Stereo Plug Connector Diameter
3.5000 mm
Conductor Gauge
22 AWG/24 AWG drain wire
Electrical and Timing Characteristics
Supply Voltage (VIN to GND)
Minimum: 3.0000 VDC
Typical: NA
Maximum: 15.0000 VDC
Measurement Duration
Minimum: 10.0000 ms
Typical: NA
Maximum: NA
Manufactured under ISO 9001:2015 EM ISO/IEC 17050:2010 (CE Mark) 2014/30/EU and 2011/65/EU EN61326-1:2013 and EN55022/CISPR 22