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Thermtest TLS-100

Thermal Conductivity/Resistivity Meter | 5% Accuracy, 2% Repeatability

The Thermtest TLS-100 Thermal Conductivity/Resistivity Meter measures the thermal conductivity and resistivity of samples such as soil, rock, concrete, and polymers. It is also commonly used to analyze soil conductivity and resistivity to find the soil nutrient information for agriculture as well as corrosion potential for buildings and buried electrical ground systems.

This device has three different types of probes that affect the performance of the meter, including the TLS-100 (which is included), TLS-50, and TLS-150. Regardless of the probe, the meter offers a thermal conductivity accuracy of 5% and repeatability of 2%.

Product Info Related Products

Models	TLS-100 (included)	TLS-50	TLS-150
Materials	Soil, solids, and powders	Rock, concrete, and polymers	Soil, solids, and powders
Thermal conductivity	0.1 - 5W/mK	0.3 - 5W/mK	0.1 - 3W/mK
Thermal resistivity	0.2 - 10mK/W	0.2 - 3.3mK/W	0.3 - 10mK/W
Smallest sample size	100mm length	50mm length	150mm length
Smallest sample size	50mm diameter	50mm diameter	50mm diameter
Test time	3min	3min	3min
Accuracy (thermal conductivity)	5%	5%	5%
Repeatability (thermal conductivity)	2%	2%	2%
Temperature range	-40 - 100°C	-40 - 100°C	-40 - 100°C
Standards	ASTM D5334-22a	N/A	ASTM D5334-14
Standards	IEEE 442-1981	N/A	IEEE 442-2017

Tests are performed with a push of a button and results are displayed instantly.
Features sensors that are auto-recognized with corresponding testing parameters automatically loaded.

TLS-50
TLS-100
TLS-150
Rock Needle Kit

Measures thermal conductivity and thermal resistivity of samples including:
- Soil
- Rock
- Concrete
- Polymers
Ground wire installation safety
Agriculture soil inspection
Building infrastructure safety