Thermal Diffusivity and Thermal Conductivity
LFA / GHP / HFM / TCT

Thermal conductivity and thermal diffusivity are the most important thermophysical material parameters for the description of the heat transport properties of a material or component. For the precise measurement of thermal diffusivity, the LaserFlash technique (LFA) has proven itself as a fast, versatile and precise absolute method. NETZSCH offers three LFA models, covering the entire spectrum of materials and temperatures.

The thermal conductivity of technical products is determined by means of heat flow meters (HFM) with the plate method for insulators, and by means of the hot-wire method (TCT) for dielectric refractories.

NETZSCH instruments fulfill the respective instrument and application standards for LFA (e.g. ASTM E 1461, DIN EN 821), for HFM (e.g. ASTM C 518, ISO 8301, DIN EN 12667 EN 12, JIS A 1412) and for TCT (e.g. ISO 8894, ASTM C 1113, EN 993-14/15, DIN 51046).

LFA 427 - Laser Flash Apparatus / Pyrometer version for up to 2800°C
Outstanding attributes of the LFA 427 are high precision and reproducibility, short measuring times, variable sample holders and precisely adjustable atmosphere conditions in the application range from -120°C to 2800°C. The LFA 427 is the most powerful LFA system for use in research & development.
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LFA 447 NanoFlash® - Xenon Flash Apparatus
In the LFA 447 NanoFlash®, a powerful Xenon flash lamp is used instead of the laser used in other LFA instruments. An integrated sample changer and easy accessibility to the sample receptacle allow high sample throughput for routine applications up to 300°C.
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LFA 457 MicroFlash® - Laser Flash Apparatus
The LFA 457 MicroFlash® is the most modern product for the determination of thermal diffusivity and thermal conductivity in the range from -125°C to 1100°C. Its compact, vacuum-tight construction, automatic sample changer and functional software guarantee the highest effectiveness for challenging materials testing.
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GHP 456 Titan®
The GHP 456 Titan® allows determination of the thermal conductivity of insulation materials with outstanding reliability and accuracy. Samples 30 cm x 30 cm and up to 10 cm in thickness can analyzed between -160 and 700°C. Innovative plate materials and temperature sensors, special design features and an improved data acquisition and control systems make the system the new benchmark in the field of insulation testing.
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HFM 436 Lambda - Heat flow meter
With the Heat Flow Meter, HFM 436 Lambda, the thermal conductivity of large-sized, plate-formed insulators is investigated at a fixed or adjustable temperature gradient. The built-in PC – or an externally connected one – delivers the precise measurement data after a short compensation time.
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TCT 426 - Thermal Conductivity Tester: furnace/hot-wire method
The TCT 426 works according to the hot wire method and is especially designed for the investigation of refractory rock. The measuring cross, parallel wire, and T(R) methods can be used in the instrument. The TCT 426 is indispensable for the efficient use of energy in industrial kiln engineering with refractories.
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