Laboratory Instruments

Thermtest Europe provide an extensive, comprehensive and growing range of laboratory instruments for the precise and accurate measurement of heat transfer properties of a wide range of material types and temperatures.

We take pride in continuously developing our thermal conductivity measuring devices to meet the testing needs of today. With our range of thermal conductivity instruments, we are especially proud to be able to offer meters and methods suitable to your needs, solving your problems.


Heat Flow Meter

The HFM-100 Heat Flow Meter is designed as an easy-to-use method for the measurement of thermal conductivity and thermal resistance of insulation products, construction materials, packaging, and assemblies. Available at an exceptional value, the Thermtest HFM has been engineered for industry-leading performance by combining the highest accuracy, repeatability, and widest temperature range possible, and follows international standards: ASTM C518, ISO 8301, and EN 12667.

Transient Hot Wire – THW-L1

The Transient Hot Wire (THW-L1) is a liquid thermal conductivity equipment for direct determination of thermal conductivity, thermal diffusivity, and specific heat capacity of liquids and pastes in accordance with ASTM D7896-19. This versatility is greatly expanded with the addition of Thermtest’s proprietary Temperature Platform (TP) which is appreciated by academic and commercial users alike.

The transient hot wire (THW) has been used for the testing of liquids for more than 30 years, making it one of the most published methods for measuring thermal conductivity of liquids available.

GHFM-01 Guarded Heat Flow Meter

Guarded Heat Flow Meter – GHFM-01

The Guarded Heat Flow Meter (GHFM-01) follows ASTM E1530-19 for testing thermal resistance and thermal conductivity of solids, such as metals, polymers, composites and paste from -20 °C to 310 °C. The Thermtest proprietary testing stack, replaces the traditional pneumatic movement with advanced motor control, which allows automated control of testing sample thickness, force or pressure applied.

Transient Line Source

A portable transient line source meter, the TLS-100 testing device is used to measure thermal conductivity and thermal resistivity, both in the field and in the laboratory. Designed for testing the thermal conductivity of soil, polymers, and other soft materials; as well as testing the thermal conductivity of concrete, rock, stone, or other hard materials. Tests can be performed with the push of a button and results are displayed immediately.

  • Soil thermal conductivity testing + rocks, concrete, and polymers.
  • Follows international standards: ASTM D5334-14, & IEEE 442-2017
  • Portable, Economical, and Accurate
  • Standard 100 mm / 150 mm sensor for soft materials
  • Standard 50 mm sensor for hard materials
Thermtest TLS-100 thermal conductivity meter
THW-L2 Thermal Conductivity Instrument Meter Transient Hot Wire

Transient Hot Wire THW-L2

The Transient Hot Wire (THW-L2) Liquid Thermal Conductivity Meter is a portable measurement system for direct determination of the thermal conductivity of liquids and pastes. The THW-L2 follows international standard ASTM D7896-14, and was designed with speed and operational simplicity in mind. Using a non-stationary measurement approach, the THW-L2 uses rapid test times to limit convective effects for samples with a wide range of viscosities.

Guarded Heat Flow Meter

The Guarded Heat Flow Meter (GHFM-02) is portable testing apparatus for the measurement of thermal resistance and thermal conductivity of solids, such as metals, polymers and composites. GHFM-02 follows the international standard ASTM E1530-19. The easy to operate GHFM-02 follows the trusted steady-state approach, with the addition of a guard to limit the effects of lateral heat loss. This design, allows testing of a wide range of materials with low to medium thermal conductivity.

GHFM-02 Guarded Heat Flow Meter
MP-2 with Sensor

Thermal Conductivity Measurement Platform

The Thermal conductivity Measurement Platform is an advanced meter with unique selection of transient thermal conductivity sensors for a variety of applications, with a focus on primary measurements. MP-2’s users benefit from the convenience and accuracy gained when using primary testing methods. The MP-2 controller auto-detects the connected sensor and loads corresponding testing parameters. Measurements are easily performed with the smart on-board software and transferred to computer with an included Windows utility program.

Transient Plane Source – Effusivity Meter

The TPS-EFF (Transient Plane Source-EFFusivity) is a portable meter for direct determination of thermal effusivity of fabrics, textiles and other low effusivity materials, in accordance with ASTM D7984-16. With a single measurement of 2 or 10 seconds in duration, materials can be accurately measured for thermal effusivity.

Thermtest Portable Thermal Effusivity Meter TPS-EFF
Steady-State ThermoReflectance Fiberoptics

Steady-State ThermoReflectance Fiberoptics

Steady-State ThermoReflectance Fiberoptics (SSTR-F) combines the technological power of laser based thermoreflectance experiments with the proven measurement capabilities of steady state thermal measurements. Utilizing small measurement volumes allows for rapid steady state measurements of materials with thermal conductivities ranging from as low as 0.05 Wm-1 K-1 up to 2,500 Wm-1 K-1. In addition to the wide range of accessible thermal conductivities, SSTR-F can accommodate sample sizes as small as a few hundred microns. Exploiting recent advances in fiber-optic components and laser systems allows for a safe, user-friendly tool capable of high throughput thermal conductivity measurements.

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