SIMPLE SOIL MOISTURE SENSING SENSOR TEROS 10

Description

The TEROS 10 is a ruggedized version of our basic, no-frills soil moisture sensor. Its 70-MHz frequency minimizes salinity and textural effects, making it accurate in most soil or soilless media. With a tough, epoxy body, the TEROS 10 is designed to withstand some of the harshest field conditions, which means problem-free measurements over the longevity of your research. In fact, we’re so confident about the long life of our TEROS sensor line, we’ve increased our standard warranty from one to three years.
MEASUREMENT SPECIFICATIONS
Volumetric water content (VWC)
Range:
Mineral soil calibration: 0.00–0.64 m
3
/m
3
Soilless media calibration: 0.0–0.7 m
3
/m
3
Apparent dielectric permittivity (ε
a
): 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.
Resolution:
0.001 m
3
/m
3
Accuracy:
Mineral soil calibration: ±0.03 m
3
/m
3
typical in mineral soils that have solution EC <8 dS/m
Soilless media calibration: ±0.05 m
3
/m
3
typical in media that has a solution EC <8 dS/m
Medium specific calibration: ±0.01–0.02 m
3
/m
3
in any porous medium
Apparent dielectric permittivity (ε
a
): 1–40 (soil range) , ±1 ε
a
(unitless) 40–80, 15% of measurement
Measurement volume
See
comparison article
Dielectric measurement frequency
70 MHz
COMMUNICATION SPECIFICATIONS
Output
1,000 to 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.
PHYSICAL SPECIFICATIONS
Dimensions
Length: 5.1 cm (2.02 in)
Width: 2.4 cm (0.95 in)
Height: 7.5 cm (2.95 in)
Needle length
5.4 cm (2.11 in)
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
3.50 mm
Conductor gauge
22 AWG/24 AWG drain wire
ELECTRICAL AND TIMING CHARACTERISTICS
Supply voltage (VIN to GND)
Minimum: 3.0 VDC
Typical: NA
Maximum: 15.0 VDC
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.
Measurement duration
Minimum: 10 ms
Typical: NA
Maximum: NA
COMPLIANCE
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