Thermtest MP-2 Measurement Platform

An advanced portable meter with unique selection of transient thermal conductivity sensors for a variety of applications, with a focus on primary measurements. It is a measurement platform for measuring Liquids, Solids, Pastes and Powders.

Conforms to ASTM and ISO Standards

Measurement Platform Specifications

Transient Line Source (TLS 50 mm and TLS 100 mm)

Thermtest TLS 50mm sensor
MaterialsConcrete, Rock and Polymers
Measurement CapabilitiesBulk Properties
Thermal Conductivity0.3 to 5 W/m•K
Thermal Resistivity0.2 to 3.3 mK/W
Measurement Time3 min.
ReproducibilityTypically better than 2%
AccuracyTypically better than 5%
Temperature Range-40 to 100°C
Minimum Sample Size50 mm in length, 50 mm diameter
Largest Sample SizeUnlimited
StandardsASTM D5334-14
Thermtest TLS 100mm sensor
MaterialsSoils, Pastes, Powders and Solids
Measurement CapabilitiesBulk Properties
Thermal Conductivity0.1 to 5 W/m•K
Thermal Resistivity0.2 to 10 mK/W
Measurement Time3 min.
ReproducibilityTypically better than 2%
AccuracyTypically better than 5%
Temperature Range-40 to 100°C
Minimum Sample Size100 mm in length, 50 mm diameter
Largest Sample SizeUnlimited
StandardsASTM D5334-14, IEEE 442-1981

Transient Line Source (TLS 150 mm)

Thermtest TLS 150mm sensor
MaterialsSoils, Pastes, Powders and Solids
Measurement CapabilitiesBulk Properties
Thermal Conductivity0.1 to 3 W/m•K
Thermal Resistivity0.3 to 10 mK/W
Measurement Time3 min.
ReproducibilityTypically better than 2%
AccuracyTypically better than 5%
Temperature Range-40 to 100°C
Minimum Sample Size150 mm in length, 50 mm diameter
Largest Sample SizeUnlimited
StandardsASTM D5334-14, IEEE 442-2017

Transient Hot Wire (THW-L3 and THW-S)

Transient Hot Wire THW-L3 Sensor
MaterialsLiquids, Pastes and Powders
Measurement CapabilitiesBulk Properties
Thermal Conductivity0.01 to 1 W/m•K
Measurement Time1 second
ReproducibilityTypically better than 2%
AccuracyTypically better than 5%
Temperature Range10 to 40°C
Minimum Sample Size15 mL
Largest Sample SizeUnlimited
StandardsASTM D7896-19
Transient Hot Wire THW-S Sensor
MaterialsInsulation and Soft Materials
Measurement CapabilitiesBulk Properties
Thermal Conductivity0.01 to 2 W/m•K
Measurement Time< 5 seconds
ReproducibilityTypically better than 2%
AccuracyTypically better than 5%
Temperature Range10 to 40°C
Minimum Sample Size50 mm x 10 mm
Largest Sample SizeUnlimited
StandardsN/A

Transient Plane Source (TPS-EFF)

Thermtest Thermal Effusivity Sensor
MaterialsTextiles, Fabrics and Solids
Measurement Capabilities1-Dimensional
Thermal Effusivity Range35 to 1700 W√s/m2K
Measurement Time2 and 10 seconds
Reproducibility2%
Accuracy5%
Temperature Range-10 to 50°C
Minimum Sample Size35 mm diameter x thickness dependent on Effusivity
Maximum Sample SizeUnlimited
Moisture Range0 to 90% (non-condensing)
Sensor Diameter30 mm
StandardsASTM D7984-16
Test MethodTransient Plane Source (TPS)

Sensor Comparison

TLS 150 mm Sensor
TLS 150 mm Transient Line Source

0.1 to 3 W/m•KThermal Conductivity

-40 to 100°CTemperature Range

5%Accuracy

THW-S Sensor
THW-S Transient Hot Wire – Solids

0.01 to 2 W/m•KThermal Conductivity

10 to 40°CTemperature Range

5%Accuracy

TLS 100mm sensor
TLS 100mm Transient Line Source

0.1 to 5 W/m•KThermal Conductivity

-40 to 100°CTemperature Range

5%Accuracy

THW-L3 Sensor
THW-L3 Transient Hot Wire – Liquids

0.01 to 1 W/m•KThermal Conductivity

10 to 40°CTemperature Range

5%Accuracy

TLS 50mm sensor
TLS 50 mm Transient Line Source

0.3 to 5 W/m•KThermal Conductivity

-40 to 100°CTemperature Range

5%Accuracy

TPS-EFF Transient Plane Source

35 to 1700 W√s/m2KThermal Effusivity

-10 to 50°CTemperature Range

5%Accuracy

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