TK04 is a fast field and lab thermal conductivity meter with an accuracy of ±2% and a measuring range of 0.1 to 10 W/mK, suitable for testing a wide range of sample materials at temperatures between -25 and 125°C.

TK04 uses the transient line-source method (compliant with ASTM D5334-22a) and a modified line-source method for plane surfaces.

 

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Thermal Conductivity Meter TK04

Needle probe method complies with ASTM D5334-22a

Heating curve od a TK04 thermal conductivity probe / TK04 heating curve The transient line-source method used by TK04 complies with ASTM D5334-22a and yields absolute thermal conductivity values without requiring any time-consuming reference or comparison measurements.
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Highly Accurate Evaluation Method

An interlaboratory study conducted by ASTM International indicated an accuracy of between ± 10% and ± 15% for the line-source method. For TK04, an improved evaluation procedure as well as methods for checking sample preparation and measuring conditions were developed, resulting in an accuracy of ± 2%.
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Modified Needle Probe Method for Hard or Brittle Sample Materials

TK04 needle probe and probe for plane surfacesHard or brittle sample materials are difficult to prepare for inserting a needle probe. Our modified line-source method uses a needle embedded in the underside of a cylinder-shaped probe body which is just placed on top of the sample surface (probe for plane surfaces).
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Fully Automated, Software-controlled Measuring and Evaluation

The provided TK04 software runs complete measuring series fully unattended, evaluates them and saves data and results directly to a PC or notebook. Reports can be printed as a diagram or list, or saved to a file.
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Checking Tools for Sample Preparation and Measuring Conditions

TK04 software: automatic temperature drift controlThermal conductivity tests are sensitive to factors like the contact between probe and sample, sample size, heating power, convection (for moist samples) or temperature changes. The TK04 software provides tools for detecting these influences. The temperature drift of the sample is continuously monitored and automatically corrected.
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