Thermal conductivity probe CTS45
laboratoryneedle

thermal conductivity probe
thermal conductivity probe
thermal conductivity probe
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Characteristics

Measured value
thermal conductivity
Field
laboratory
Other characteristics
needle

Description

THERMAL CONDUCTIVITY PROBE ON SAMPLES, LENGHT 45 CM Description CTS45 is a probe for measuring the conductivity in laboratory on samples , length: 45 cm, that offers the possibility to perform a practical and fast measurement of the thermal conductivity (or thermal resistivity) of the medium in which it is inserted at a high accuracy level. It works in compliance with the ASTM D 5334-00, D 5930-97 and IEEE 442-1981 standards. The probe has proven its suitability for soils, thermal backfill materials, sediments, foodstuff, powders, sludges, paints, glues and various other materials. The Non-Steady-State Probe (NSSP) measurement method (also known as transient line source, thermal needle, hot needle, heat pulse- and hot wire technique) has the fundamental advantages that it is fast and absolute while the sample size is not critical. Hukseflux is specialised in NSSP design. Special models have been developed for in-situ field experiments. CALIBRATION - ISO 9000 Verification of the stability of the total probe can be done by repeated (yearly) testing in glycerol, preferably at several temperatures. Alternatively Calibration Reference Cylinders (CRC) traceable to NPL can be purchased. CTS45 is suitable for use by ISO certified labs. The measurement method is based on the so called unstable sensor technique, that uses a probe (also called thermal needle), which mounts a heating wire and a temperature sensor. The probe is introduced in the ground. From its response when subject to a heating cycle for a few minutes, it is possible to calculate the thermal resistivity (or its opposite, the heat transmission).

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