C-Therm Trident
The ultimate thermal conductivity toolbox — MTPS, TPS, TLS and THW transient sensors in one modular…
Thermal Conductivity Application
ASTM D5334-compliant measurement of rock cores, soils and aggregates for geothermal and energy-infrastructure design.
Thermal conductivity is a critical design parameter for geothermal heat pump systems, borehole thermal energy storage, enhanced geothermal systems, underground transmission lines, and radioactive waste repositories. Accurate measurement in heterogeneous geological materials—from intact rock cores to loose soils and aggregates—requires an instrument capable of handling variations in density, moisture, and composition. ASTM D5334 specifies that measurements are applicable for both intact and reconstituted soil specimens and soft rock specimens, ensuring standardized, repeatable results.


The C-Therm Trident Thermal Conductivity Instrument is designed to handle a variety of geological and geothermal samples under representative lab and field conditions. The Trident delivers fast, accurate, and repeatable thermal conductivity measurements across rocks, soils, core samples, and aggregates, fully compliant with ASTM and ISO standards.
Measure thermal conductivity across a wide range of samples, including grouts, rock cores, and aggregates, all on a single platform.
Measures samples under true temperature, pressure, moisture, and density for precise, reproducible results.
Fast, precise results in minutes, even for small or irregular samples.
Little to no sample preparation required, saving time and reducing errors.

Request a demo to see how the C-Therm Trident delivers fast, accurate, and repeatable thermal conductivity measurements for geological and geothermal applications.
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Our application specialists can recommend the right technique, sensor and measurement parameters — and share additional application data for your industry.
Get application guidance, commercial quotes and demos from our thermal specialists.