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Light Flash Apparatus : LFA 467 HT HyperFlash® NETZSCH-GERÄTEBAU GMBH

Light Flash Apparatus : LFA 467 HT HyperFlash®

Conductivity meters

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New Dimensions in the Measurement of Thermal Diffusivity and Conductivity – Fast, Simple, Economical

Accurate thermal diffusivity and thermal conductivity measurements between RT and 1250°C with Xenon Flash


The LFA 467 HT HyperFlash® is based on the already-established LFA 467 HyperFlash® technology and requires no laser class due to the innovative light source system. The long lifetime of the xenon lamp provides cost-effective measurements until 1250°C without costly consumables.

ZoomOptics – For precise measurement results by an optimized field of view

The patented ZoomOptics system (patent no.: DE 10 2012 106 955 B4  2014.04.03) optimizes the field of view of the detector, thus eliminating any influences caused by aperture stops. The result is a significant increase in the precision of the measurement results.

Ultra-fast sampling rate (up to 2 MHz) and extremely short pulse widths (up to 20 µs) enabling measurement of thin and highly conducting materials

The data acquisition rate of the LFA 467 HyperFlash® series was increased to 2 MHz. This acquisition rate applies to both the IR detector and the pulse mapping channels. Thereby, highly conductive and/or thin materials requiring very short test times can be reliably tested.
When testing metal (0.3 mm) and polymer foils (30 μm), an optimum sampling rate and pulse width can be selected. The patented pulse mapping system accounts for the finite pulse width effect and heat losses (patent no.: US7038209 B2; US20040079886; DE1024241).

Vacuum-tight for defined atmospheres and prevention of oxidation

An internal pump device supports defined atmospheres by an automatic evacuation function prior to each measurement. Additional connections for external pump devices are available. The vacuum tight platinum furnace allows for heating rates up to 50 K/min.

High throughput and precision – 4 samples 4 thermocouples

Effective sample throughput over the entire temperature range is guaranteed by the automatic sample changer (ASC). Each of the ASC’s four sample positions is equipped with its own thermocouple. This results in drastically minimized temperature deviations between the sample and temperature measuring position. The ASC is designed for sample dimensions of 12.7 mm (round) and 10 mm (round and square).

All accomplished while still possessing the smallest footprint

The LFA 467 HT HyperFlash® is the first flash lamp-based LFA system to reach temperatures until 1250°C. One single furnace with an integrated sample changer covers the entire temperature range, providing the small footprint that the LFA 467 HyperFlash® series is well known for. Even at such elevated temperatures, an efficient internal water cooling circuit keeps the temperature of the surrounding components within a safe range, thereby reducing the liquid nitrogen consumption of the IR detector.

Temperature range : RT to >1250°C Heating rate (max.) : 50 K/min Thermal Diffusivity : 0.01 mm2/s to 2000 mm2/s Thermal Conductivity : < 0.1 W/(m*K) to 4000 W/(m*K) Vacuum : 10-4 mbar
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