Soil Moisture (10 cm probe) Smart Sensor
S-SMB-M005 Soil Moisture (10 cm probe) Smart Sensor
  • S-SMB-M005 Image 1
Part # S-SMB-M005

Soil Moisture (10 cm probe) Smart Sensor




Measure soil water content with the affordably-priced Soil Moisture Smart Sensor; this sensor integrates the field-proven ECH2O™ Sensor and a 12-bit A/D, providing ±4% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration. The sensor's thin profile and 10 cm probe length make the sensor easy to install, while measuring a representative cross-section of soil. Readings are provided directly in volumetric water content.

  • ±4% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration.
  • 10 cm probe length
  • Compatible with Onset stand-alone and web-based weather stations

In what environment does this sensor operate?

This sensor operates in an outdoor environment.

What measurements does this sensor support?

The S-SMB-M005 sensor supports the following measurement: Soil Moisture

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

Measurement Range:
In soil: 0 to 0.450(m³/m³)
Extended range: -0.376 to 1.964 m³/m³ (full scale)
The sensor is capable of providing readings outside the standard volumetric water content range. This is helpful in diagnosing sensor operation and installation. See the Operation section below for more details.

Accuracy: ±0.041 m³/m³ (±4%) typical 0 to 50°C (32° to 122°F); ±0.020 m³/m³ (±2%) with soil specific calibration.
This is a system level accuracy specification and is comprised of the ECH2O probe's accuracy of ±0.04 m³/m³ typical (±0.02 m³/m³ soil specific) plus the smart sensor adapter accuracy of ±0.001 m³/m³ at 25°C (77°F). There are additional temperature accuracy deviations of ±0.003 m³/m³ / °C maximum for the ECH2O probe across operating temperature environment, typical <0.001 m³/m³ / °C. (The temperature dependence of the smart sensor adapter is negligible.)

Resolution: ±0.0006 m³/m³ (±0.06%)

Soil Probe Dimensions: 152 x 32 x 1.0 mm (6 x 1.25 x 0.04 in.)

Weight: 190 grams (6.7 oz)

Decagon ECH2O Probe Part No.: EC-10

Sensor Operating Temperature: 0° to 50°C (32° to 122°F).
While the sensor probe and cable can safely operate at below-freezing temperatures (to -40°C/F) and up to 75°C (167°F), the soil moisture data collected at these extreme temperatures is outside of the sensor's accurate measurement range.

Bits per Sample: 12

Volume of Influence: 0.13 liter (4.4 oz)

Sensor Frequency: 5 MHz

Number of Data Channels: 1 (A single smart sensor-compatible HOBO logger can accommodate 15 data channels and up to 100 m (328 ft) of smart sensor cable (the digital communications portion of the sensor cables)

Measurement Averaging Option: No

Cable Length Available: 5 m (16 ft)

Length of Smart Sensor Network Cable: 0.5 m (1.6 ft)

The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below. Our user forum can also be a valuable resource for questions, use cases and general feedback. Share with us today, here!

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