The toughest, longest-lasting soil moisture sensor, built with new CDX technology for accurate measurements in a wide range of soil salinity and temperatures.

• Measures dielectric permittivity, soil moisture, temp, bulk EC, and pore water EC with Complex Dielectric through intersections (CDX)
• Achieve accurate water content measurements—even in high salinity soils
• Built tough for long-term deployment in harsh conditions

The future of soil moisture monitoring starts here

Get more out of every measurement with the SOLYX 14 featuring CDX. Continuously monitor dielectric permittivity, soil temperature, bulk electrical conductivity (ECb), volumetric water content (VWC), and pore water electrical conductivity (ECw). Designed and proven through rigorous durability testing, the SOLYX 14 is METER’s toughest, longest-lasting sensor yet—ensuring you get consistent, accurate soil moisture data season after season, year after year.

Soil moisture—evolved

Accurate soil moisture measurement relies on more than just collecting and processing data. To truly trust data validity, sensors should be easy to consistently install correctly and durable enough to endure years of use in harsh environmental conditions. METER instruments are chosen by scientists, growers, and engineers worldwide for their accuracy, and the CDX technology behind the SOLYX 14 marks the next advancement in soil moisture measurement.

Redefining what’s possible with CDX technology

Developed by METER scientists, Complex Dielectric through intersection, or CDX, is a patented capacitance/frequency-domain technology that makes accurate measurement of VWC, EC, and soil temperature possible in soil, substrates, and porous material across a wide range of salinities and temperatures.

By measuring complex dielectric permittivity, the SOLYX 14 independently measures both the real dielectric permittivity (related to water content) and the imaginary dielectric permittivity (which is influenced by salts and lossy clays). That means you can achieve accurate soil moisture measurements in more places than ever before.

Consistent installation = higher accuracy

The more consistent the sensor installation, the more reliable the data. That’s why the SOLYX 14 can be installed using the same Borehole Installation Tool (TBIT) as the TEROS soil moisture sensors, which minimizes air pockets and ensures solid sensor-to-soil contact. The TBIT firmly inserts the sensor into the side of a 10 cm borehole at depths of up to 5 meters, making installation quicker, easier, and more accurate. Once installed, setup is as simple as plug-and-play with METER data loggers, sending real-time data to ZENTRA Cloud for remote data visualization, computation, and collaboration.

Engineered for endurance

Whether you’re measuring soil moisture over a season or a decade, SOLYX 14 delivers long-term stability and reliability. Its low-power requirements make it ideal for permanent installation—even at remote sites. Robust stainless-steel needles, a high-durability cable, and epoxy fill enable this sensor to provide research-grade accuracy year after year, even under harsh conditions.

Feature summary

• CDX technology accurately measures dielectric, soil moisture, and EC in a wide range of soil types, salinities, and temperatures
• Sensor-to-sensor consistency ensures trustworthy measurements
• Simplify sensor installation with the Borehole Installation Tool
• On-board error checking ensures reliable data
• Robust design with epoxy fill, stainless steel needles, and cable with braided metal shield to protect against damage
• Ideal for long-term deployment