Simple Soil Water Content Sensor


Large sensor networks can eat up your research budget, especially because many soil moisture sensors have reliability issues. Plus, traditional sensors force you to choose between accuracy and affordability. Not anymore. The ultra-robust TEROS 10 delivers scientific accuracy and reliability at a price that makes large sensor networks economically practical.

A photo of TEROS 10 soil moisture sensor

Everything you need. Nothing you don’t.

The TEROS 10 soil water content sensor 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. We’re so confident about the long life of our TEROS sensor line, we’ve increased our standard warranty from one to three years.

70 MHz

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Long-lasting precision that’s low cost

The TEROS 10 sensor lets you characterize your site with sensors at multiple depths and locations, even on a tight budget. It’s built to last longer in the field under harsh conditions. No more worrying about surprise data gaps due to failed sensors. It’s one of our toughest soil moisture sensors, and its body withstands difficult environments for up to 10 years. Ideal for large sensing networks, it is sensitive to small VWC changes across the entire range of soil and substrate water content and can be installed in anything from dry desert soils to very wet peat. Not only that, the TEROS 10 has very low power consumption and a high resolution.

years withstanding difficult environments

A photo of TEROS 10 soil moisture sensor

METER is trusted by

Brigham Young University
Temple University
Colorado School of Mines
Characterize variability. Cover more space.

If you’re planning a large soil water content sensor network and want more measurements for less investment, without compromising accuracy or reliability, then plan to use the easy, affordable, and ruggedized TEROS 10 soil moisture sensor.

A photo of TEROS 10 soil moisture sensor

Simple integration. Simplified data collection.

The analog signal from the TEROS 10 sensor ensures that it can be easily integrated into a wide variety of non-METER systems. Or, simply plug the TEROS 10 into any METER data logger, and start collecting data. It’s that easy. No wiring. No programming. Combine the TEROS 10 with the new ZL6, where all data are connected and delivered through the cloud. Collect data in near-real time from the comfort of your office, or anywhere in the world.

A photo of TEROS 10 soil moisture sensor

Faster, better installation

More than just a sensor, the new TEROS 10 eliminates common problems that cause uncertainty in the data—things like air gaps and preferential flow. How? The TEROS 10 is compatible with the TEROS Borehole Installation Tool which mistake-proofs installation. Because of its mechanical advantage, the tool delivers consistent, flawless installation into any soil type (even hard clay) while minimizing site disturbance. Sensors are installed straight in and perpendicular with no side-to-side movement, then gently released to prevent air gaps and preferential flow. This means the TEROS 10 delivers more accuracy with less uncertainty than similar sensors on the market. And, with improved high-quality, sharpened, and securely fastened stainless steel needles, the TEROS 10 glides into any soil.

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Feature summary

  • Low-cost, ruggedized soil moisture sensor
  • Ideal for large sensor networks
  • Sharpened stainless steel needles are securely fastened and reduce breakage
  • Compatible with TEROS Borehole Installation Tool ensuring fast, error-free installation with little site disturbance
  • 3-year long-life guarantee
  • Check installation or troubleshoot with the ZSC Bluetooth sensor interface
  • Measure VWC in a harsh environment
  • Robust epoxy body means it lasts for 10+ years in the field
  • 430 mL volume of influence
  • Repeatability can be checked with an accuracy verification standard
  • Plug and play with METER data loggers
  • Ferrite core eliminates cable noise
  • Easy integration with third-party systems

Water Content Features

wdt_ID wdt_created_by wdt_created_at wdt_last_edited_by wdt_last_edited_at Features TEROS 10 TEROS 11 TEROS 12 TEROS 54 ECH20 EC-5 ECH20 10HS
1 Measures volumetric water content X X X X X X
2 Measures temperature X X X
3 Measures EC X
4 Depths measured simultaneously 1 1 1 4 1 1
5 Individually normalized X X X
6 Can install manually X X X X X
7 ariel.dearth 21/05/2024 02:06 PM ariel.dearth 21/05/2024 02:06 PM Install tool available TBIT TBIT TBIT TEROS 54 Install Tool N/A N/A
8 Install via borehole or trench Either Either EIther Borehole Either Either
9 Quickest install/removal X
10 Maintenance-free X X X X X X
11 Compatible with verification clip X X X
12 Volumetric water content accuracy - generic calibration ±0.03 m³/m³* ±0.03 m³/m³* ±0.03 m³/m³* ±0.05 m³/m³* ±0.03 m³/m³* 0.00 - 0.57 m³/m³*
13 Volumetric water content accuracy - medium specific calibration ±0.01–0.02 m³/m³** ±0.01–0.02 m³/m³** ±0.01–0.02 m³/m³** ±0.02–0.03 m³/m³** ±0.02 m³/m³** N/A
14 Analog vs digital Analog Digital Digital Digital Analog Analog
15 Uses capacitance technology X X X X X X
16 Maximum measurement volume 430 mL 1010 mL 1010 mL 300 cm³ per segment 240 mL 1320 mL
17 Connects to ZENTRA X X X X X X
18 ariel.dearth 21/05/2024 02:04 PM ariel.dearth 21/05/2024 02:04 PM LEARN MORE TEROS 10 TEROS 11 TEROS 12 TEROS 54 ECH20 EC-5 ECH20 10HS
19 * Generic calibration - typical in mineral soils that have solution EC
20 ** Medium specific calibration - in any porous medium
Features TEROS 10 TEROS 11 TEROS 12 TEROS 54 ECH20 EC-5 ECH20 10HS

A photo of TEROS 10 soil moisture sensor

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