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LFA 467 HT HyperFlash Thermal Conductivity Meter
LFA 467 HT HyperFlash Thermal Conductivity Meter
Product details
Accurate testing of thermal diffusivity and thermal conductivity, covering a wide temperature range of RT... 1250 ° C
Nike's new flash thermal conductivity meter LFA 467 HyperFlash ® Based on mature LFA 467 HyperFlash ® Platform construction, capable of operating at room temperature Accurate measurement of thermal diffusivity and thermal conductivity between 1250 ° C. The instrument uses an innovative xenon lamp light source system, which has a long light source life and provides accurate thermal conductivity measurement over a wide temperature range, with almost no consumables.
ZoomOptics - Optimize detection range to obtain accurate measurement results
The patented ZoomOptics system (patent number: DE 10 2012 106 955 B4 2014.04.03) optimizes the detection range of the detector, eliminates interference signals at the outer edge of the sample, and greatly improves the accuracy of measurement results.
Ultra high data acquisition rate (up to 2MHz), extremely narrow light pulse width (minimum below 20 μ s), allowing measurement of thin and highly thermally conductive materials
LFA 467 HyperFlash ® The data acquisition rate of the series products has been increased to 2 MHz. This ultra-high data acquisition rate is reflected in both the infrared detector and the pulse mapping channel. Thus, it is possible to effectively test high thermal conductivity thin layer materials with very short heat transfer times, such as metal sheets with a thickness of about 0.3mm or polymer films with a thickness of about 30 μ m.
The patented pulse mapping system incorporates finite pulse width effects and thermal losses into the calculation (patent number: US7038209 B2; US20040079886; DE1024241）。
Nike's new flash thermal conductivity meter LFA 467 HyperFlash ® Based on mature LFA 467 HyperFlash ® Platform construction, capable of operating at room temperature Accurate measurement of thermal diffusivity and thermal conductivity between 1250 ° C. The instrument uses an innovative xenon lamp light source system, which has a long light source life and provides accurate thermal conductivity measurement over a wide temperature range, with almost no consumables.
ZoomOptics - Optimize detection range to obtain accurate measurement results
The patented ZoomOptics system (patent number: DE 10 2012 106 955 B4 2014.04.03) optimizes the detection range of the detector, eliminates interference signals at the outer edge of the sample, and greatly improves the accuracy of measurement results.
Ultra high data acquisition rate (up to 2MHz), extremely narrow light pulse width (minimum below 20 μ s), allowing measurement of thin and highly thermally conductive materials
LFA 467 HyperFlash ® The data acquisition rate of the series products has been increased to 2 MHz. This ultra-high data acquisition rate is reflected in both the infrared detector and the pulse mapping channel. Thus, it is possible to effectively test high thermal conductivity thin layer materials with very short heat transfer times, such as metal sheets with a thickness of about 0.3mm or polymer films with a thickness of about 30 μ m.
The patented pulse mapping system incorporates finite pulse width effects and thermal losses into the calculation (patent number: US7038209 B2; US20040079886; DE1024241）。
Vacuum sealed to ensure a pure atmosphere and prevent sample oxidationThe instrument is equipped with a fully automatic vacuum system, which can automatically evacuate and replace the atmosphere before the measurement begins, ensuring the purity of the atmosphere. The instrument also has an extended vacuum interface that can be connected to an external vacuum pump. The platinum furnace is designed for vacuum sealing, with a maximum heating rate of 50K/min.
By designing four different grades and four independent thermocouples, the efficiency and accuracy of sample measurement and temperature measurement are improved
The instrument achieves efficient testing over a wide temperature range through an automatic sampler (ASC). ASC contains four sample grades and can load circular samples with a diameter of 12.7mm, or circular or square samples with a size of 10mm. Each sample grade has an independent thermocouple. This design greatly reduces the temperature deviation between the sample and the temperature measurement point.
Compact in size and highly integrated
LFA 467 HT HyperFlash ® It is the first LFA system based on xenon lamp light source that can reach a high temperature of 1250 ° C. The instrument is equipped with a single furnace body and a built-in automatic sampler to maintain LFA 467 HyperFlash ® Consistently compact in size, it covers a wide temperature range. Even at higher temperatures, an effective internal circulation water cooling system can still ensure that the temperature of surrounding components is within a safe range, thereby reducing the liquid nitrogen consumption of infrared detectors.
LFA 467 HT HyperFlash®-Technical parameters
• Temperature range: RT... 1250 ° C (LFA 467 HT)
• Different infrared sensors can be selected to achieve optimal signal response in different temperature ranges
ZoomOptics function optimizes the signal-to-noise ratio of infrared temperature measurement
• Laser source: Xenon lamp, adjustable energy
• Thermal conductivity: 0.1... 4000W/mK
Sample size: Square 8 x 8mm, 10 x 10mm Round Ø 10mm, Ø 12.7mm, Ø 25.4mm Thickness 0.01... 6mm
• Test atmosphere: Inert or oxidizing
• Sample form: solid, liquid, powder, film
Automatic sampler: up to 4 sample grades (LFA 467 HT)
• Cooling equipment: liquid nitrogen refrigeration (optional)
New measurement system, especially suitable for thin film materials
LFA 467 HT HyperFlash®-Application examples
Nickel based alloys - high precision across the entire temperature range
The curves in the figure show the test results of the thermal diffusivity (red dots), thermal conductivity (blue dots), and specific heat (black dots) of the standard Inconel 600. Compared with the theoretical value (solid line), the deviation of the measured data points is less than ± 3%, and the accuracy level is generally better than ± 3%.
The curves in the figure show the test results of the thermal diffusivity (red dots), thermal conductivity (blue dots), and specific heat (black dots) of the standard Inconel 600. Compared with the theoretical value (solid line), the deviation of the measured data points is less than ± 3%, and the accuracy level is generally better than ± 3%.
silver
Silver has high electrical conductivity, which helps to reduce the resistance of plated wires, which is particularly advantageous in high-frequency applications.
The left figure compares the thermal diffusion coefficients of silver samples with different thicknesses. At a testing temperature of 300K, the deviation between the test results of samples with different thicknesses (from thin to thick) and the literature values is within ± 3%.
Silver has high electrical conductivity, which helps to reduce the resistance of plated wires, which is particularly advantageous in high-frequency applications.
The left figure compares the thermal diffusion coefficients of silver samples with different thicknesses. At a testing temperature of 300K, the deviation between the test results of samples with different thicknesses (from thin to thick) and the literature values is within ± 3%.
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