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SOLYX 14

Measure accurate water content and pore water EC with revolutionary CDX technology
Measure accurate water content and pore water EC with revolutionary CDX technology

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Description

The future of soil moisture monitoring starts here

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

Soil moisture—evolved

Accurate soil moisture measurement depends on more than collecting and processing data. Sensors must be installed consistently and correctly, while remaining durable enough to withstand years of use in demanding environmental conditions. METER instruments are trusted by scientists, growers and engineers worldwide, and the CDX technology behind the SOLYX 14 represents the next advancement in soil moisture measurement.

Redefining what’s possible with CDX technology

Developed by METER scientists, Complex Dielectric through Intersection (CDX) is a patented impedance technology that enables accurate measurement of VWC, EC and soil temperature in soils, substrates and porous materials across a wide range of salinities and temperatures.

By measuring complex dielectric permittivity, the SOLYX 14 independently measures real dielectric permittivity, which relates to water content, and imaginary dielectric permittivity, which is influenced by salts and lossy clays. This allows accurate soil moisture measurements across a wider range of environments and soil conditions.

Consistent installation for greater accuracy

Consistent sensor installation produces more reliable data. The SOLYX 14 can be installed using the same Borehole Installation Tool (TBIT) used with TEROS soil moisture sensors. This minimises air pockets and provides secure sensor-to-soil contact.

The TBIT inserts the sensor firmly into the side of a 10 cm borehole at depths of up to 5 metres, making installation faster, easier and more consistent. Once installed, the sensor offers plug-and-play compatibility with METER data loggers, sending real-time data to ZENTRA Cloud for remote visualisation, calculation and collaboration.

Engineered for endurance

Whether you are monitoring soil moisture for a single season or over a decade, the SOLYX 14 is designed for long-term stability and reliability. Its low power requirements make it suitable for permanent installation, including at remote monitoring sites.

Robust stainless-steel needles, a durable cable and protective epoxy fill help the sensor maintain research-grade accuracy under harsh field conditions. The SOLYX 14 is backed by a standard warranty of up to three years, with terms varying by region.

Feature summary

  • CDX technology accurately measures dielectric permittivity, soil moisture and EC across a wide range of soil types, salinities and temperatures.
  • High sensor-to-sensor consistency provides dependable and comparable measurements.
  • Compatible with the Borehole Installation Tool for faster and more consistent sensor installation.
  • An onboard diagnostic tool checks sensor functionality with every measurement.
  • Protective epoxy fill, stainless-steel needles and a cable with a braided metal shield resist field damage.
  • Designed for reliable, long-term deployment in demanding environments.

SPECIFICATION

Technical Specifications

Measurement
Volumetric Water Content Range Mineral soil calibration: 0.00–0.72 m³/m³
Real dielectric permittivity (εr): 1 (air) to 80 (water)
The VWC range depends on the medium used for sensor calibration. A custom calibration can accommodate the required ranges for most substrates.
Volumetric Water Content Resolution 0.001 m³/m³
Volumetric Water Content Accuracy Generic calibration: ±0.03 m³/m³ typical in mineral soils
Medium-specific calibration: ±0.01 m³/m³ in any porous medium
Real dielectric permittivity (εr): ±1 εr (unitless)
Dielectric Measurement Frequency 70 MHz
Temperature Range: −40 °C to +60 °C
Resolution: 0.1 °C
Accuracy from 0 to +60 °C: ±0.3 °C
Accuracy from −40 to 0 °C: ±1 °C
Temperature readings may require a longer equilibration time if the sensor is not fully immersed in the medium being measured.
Bulk Electrical Conductivity Range: 0.00–20 dS/m (bulk)
Resolution: 0.001 dS/m
Accuracy from 0–10 dS/m: ±(5% + 0.1 dS/m)
Accuracy from 10–20 dS/m: ±8%
Output and Compatibility
Output DDI serial
SDI-12 communication protocol
Data Logger Compatibility METER ZL6, EM60 and Em50 data loggers, and any data acquisition system capable of supplying 4–15 VDC power with serial or SDI-12 communication.

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