Diffusività e Conduttività Termica
LFA / HFM / TCT

Conduttività e diffusività termica sono parametri termofisici più importanti per la descrizione delle proprietà di trasferimento calore di un materiale od un composto. Per la misura precisa della diffusività termica, la tecnica LaserFlash (LFA) è conosciuta come un metodo assoluto, veloce e preciso. NETZSCH offre tre modelli di LFA, coprendo l’intero spettro di temperature e materiali.
La conduttività termica di prodotti tecnici è determinata mediante l’uso di termoflussimetri (HFM) con il metodo della piastra, per gli isolanti, oppure con il metodo a filo caldo (TCT) per i refrattari dielettrici.

Gli strumenti NETZSCH sono conformi agli standard strumentali ed applicativi per LFA (es. ASTM E 1461, DIN EN 821, DIN 30905), per HFM (es. ASTM C 518, ISO 8301, DIN EN 12667 EN 12, JIS A 1412) e per TCT (es. ISO 8894, ASTM C 1113, EN 993-14/15, DIN 51046).

LFA 427 - Laser Flash Apparatus (2000°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 -70°C to 2000°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 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 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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