How it Works
Principles of Operation - Modified Transient Plane Source Technique
The TCi Thermal Conductivity Analyzer represents the third generation of the patented technology and expands the capabilities of this rapid, non-destructive thermal conductivity and effusivity testing instrument to a whole new level. Designed to provide simple, highly accurate thermal characterization for lab, quality control and production environments, the TCi Thermal Conductivity Analyzer requires no calibration or sample preparation. The system has broad testing capabilities (0.0 to 100 W/mK) in a wide range of temperatures (–50˚ to 200˚C).
The TCi is based on the modified transient plane source technique. It uses a one-sided, interfacial, heat reflectance sensor that applies a momentary, constant heat source to the sample.
Both thermal conductivity and effusivity are measured directly and rapidly, providing a detailed overview of the thermal characteristics of the sample material.
C-Therm Technologies at Work
 Sample material can be a solid, liquid, paste or powder.
A known current is applied to the sensor’s heating element providing a small amount of heat.
The heat provided results in a a rise in temperature at the interface between the sensor and the sample - typically less than 2 deg C.
This temperature rise at the interface induces a change in the voltage drop of the sensor element.
The rate of increase in the sensor voltage is used to determine the thermo-physical properties of the sample material.
The thermo-physical properties of the sample material are inversely proportional to the rate of increase in the sensor voltage.
The more thermally insulative the material is - the steeper the voltage rise.
Results are displayed on the system’s laptop computer in real-time.
Ease of Use
C-Therm has made accurate thermal characterization of materials both fast and simple. The TCi eliminates the need for special training, pain-staking calibration, or sample preparation. The system includes a laptop with C-Therm’s intuitive, Windows®-based software interface and a full relational database with importing and exporting capabilities. Downloading your results to Excel® is a snap.
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