How to calibrate and test TLS

The Transient Line Source (TLS) method is used to measure thermal conductivity or thermal resistivity of soil and rock materials. Using the interactive demonstration below, you can learn how to calibrate and test with the TLS. The reference material has been measured by an absolute method and values recorded.

1 Calibration Material	3
2 TLS Sensor	4 Calibration Result

Reference:
Paper: B. Pilkington, P. de Wilde, S. Goodhew, and R. Griffiths. 2006. Development of a Probe for Measuring In-situ the Thermal Properties of Building Materials. The 23rd Conference on Passive and Low Energy Architecture, Geneva, Switzerland, 6-8 September 2006.
Available at: http://www.unige.ch/cuepe/html/plea2006/Vol2/PLEA2006_PAPER185.pdf ASTM: ASTM D5334-22, Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure, ASTM International, West Conshohocken, PA, 2014, www.astm.org

Absolute Testing Methods

Thermal Conductivity Laboratory Instrument Portable Meter TPS Sensors

TPS

Simulate Absolute Testing

LFA

Simulate Absolute Testing

Methods Requiring Calibration

Calibrate MTPS Modified Transient Plane Source Calibration

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For more information visit Methods Requiring Calibration or Absolute Methods.

How to calibrate and test TLS

Absolute Testing Methods

TPS

LFA

Methods Requiring Calibration

MTPS

TLS

THW

HFM

Desktop Feature

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