ASTM D is a significantly updated version of the Standard Test Method for Determination of Thermal Conductivity of. Soils and Rock by Thermal Needle . ASTM D – Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure. This standard is. Buy ASTM D TEST METHOD FOR DETERMINATION OF THERMAL CONDUCTIVITY OF SOIL AND SOFT ROCK BY THERMAL.
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TP08 is a probe 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. The standard TP08 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. For permanent installation in soils, a dedicated model, TP01, is available. In general a NSSP consists of a heating wire, representing a perfect line source, and a temperature sensor capable of measuring the temperature at this source.
The probe is inserted in the medium that is investigated. The NSSP principle relies on a unique property of a line source: The xstm size is not critical, as long as a 20 mm radius around the needle is covered.
These are done without need of reference materials. The measurement with TP08 is absolute. The primary model of the Hukseflux product range is the TP This model offers optimal measurement accuracy by a combination of its design features.
For some applications however the requirements regarding the sample size are such that the needle length and diameter of the TP02 are too large.
Soil Thermal Resistivity Meter
For this category of samples, TP08 has been designed. Having a needle length of 70 mm, with the junction at around 17 mm from the tip, and a diameter of 1.
In some cases samples can even be smaller consult Hukseflux. In TP08 the reference junction of the thermocouple is located in the astj. A high quality measurement with TP08 requires that not only the sample but also the base are at a stable preferably the same temperature.
Usually this is achieved by clamping the base into the same material metal that holds the sample. TP08 is suitable for use by ISO certified labs. Some samples require pre-drilling. Min 20 mm radius. Min volume 80 ml. Optimal accuracy Temperature sensor in the base. Description Specifications Specifications Downloads Product Description TP08 is a probe 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.
Because of the relative importance of asgm thermal equilibrium between base and sample, an optional container can be ordered with TP Alternative models, for instance smaller, more robust or temperature resistant have been manufactured on request.
Permanent installation in soils: The dedicated model TP01 is specifically designed for long term monitoring.
Measuring Principle | TK04 Thermal Conductivity Meter
A separate brochure is available. See also Solutions for measurement and control: See the TP02 manual or inquire at Hukseflux. Turn key systems are offered for sale: More details on the science: Downloads Download Product Manual.