Description
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TPSYS20 is an accurate and user friendly system for measuring thermal conductivity. Its main components are the TP02 thermal needle probe (or its smaller equivalent, model TP08), the MCU Measurement and Control Unit and software. TP02 and TP08 are designed for measuring thermal conductivities in the range from 0.1 to 6.0 W/(m∙K).
The measurement principle is the transient line source technique, in which the thermal conductivity of a specimen is determined from the step response of the specimen temperature to heat from a linear heater. For details on TP02 or TP08, see the separate brochures. The MCU takes care of the measurement and control process and provides a convenient graphical user interface in the form of a web page. |
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TPSYS20 is particularly suitable for thermal conductivity measurements in a laboratory environment. If needed, TPSYS20 can be powered from a 12 V battery, so that it may be used in the field. TPSYS20 is operated in conjunction with a PC. An intuitive and easy-to-use graphical user interface allows the user to set measurement parameters, control measurements, view measurement progress and view and download measurement data. |
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TPSYS20 is either delivered with a TP02 or a TP08 probe. TP02 is equipped with a reference temperature junction, located in the tip of the needle. This allows the temperature difference between the heated section of the needle and the reference junction to be measured. The use of a reference junction makes the thermal conductivity measurement much less sensitive to specimen temperature drift. For more details see the TP02 brochure.
TP08 is a shorter needle, which makes it an excellent alternative when only small amounts of sample material are available. TP08 does not have a reference temperature junction. For more details see the TP08 brochure. |
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The measurement with TPSYS20 complies with the IEEE Guide for Soil Thermal Resistivity Measurements (IEEE 442-2017) as well as with ASTM D5334 – 14 Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock. TPSYS20 is suitable for use by ISO certified laboratories.
TPSYS20 is primarily intended for laboratory use. For outdoor soil measurements Hukseflux recommends consulting the brochures of the more robust albeit less accurate FTN, MTN and TNS systems designed for outdoor use. |
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TPSYS20 is a complete measuring system. Several accessories are offered, including CRC series Calibration reference cylinders, a keyboard display and spare sets of needles and guiding tubes. For high-accuracy calibration, dedicated CRC01 Calibration Reference Cylinders are available. For insertion into hard material types or for casting into plastics, cement and backfill materials, GT Series Guiding tubes can be applied.
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