Thermal Conductivity Tester(Light/Laser Flash Method)，light flash thermal conductivity measurement device for electronics materials

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Transient Laser Flash Thermal Conductivity Tester is a high-precision instrument designed to measure thermal diffusivity and thermal conductivity of high-conductivity solid materials, such as metals, diamond, graphite, and other advanced materials. Based on the laser flash method, the instrument delivers a short, high-intensity energy pulse to the sample surface, causing a temperature rise on the rear surface. The time to reach half of the maximum rear-surface temperature (half-rise time) is recorded and processed by a dedicated mathematical model to calculate thermal diffusivity and thermal conductivity. The instrument offers rapid measurement, high accuracy, wide temperature applicability, and non-contact testing, making it indispensable for research, industrial quality control, and production monitoring.

Application

The tester is suitable for testing thermal properties of:

Metals, alloys, and advanced ceramics

Graphite, graphene, silicon carbide, diamond

Thermal interface materials and high-conductivity composites

Applications include:

Materials research in universities and institutes

Quality control in industrial production

R&D laboratories for advanced thermal management materials

Rapid thermal testing for both research and industrial applications

Standards

The instrument complies with the following international and national standards:

GB/T 22588-2008

Flash Method for Measuring Thermal Diffusivity or Thermal Conductivity of Materials

ASTM E1461-2022

Standard Test Method for Thermal Diffusivity of Solids by the Flash Method

GB/T 42919.4-2023

Plastics – Determination of Thermal Conductivity and Thermal Diffusivity – Part 4: Laser Flash Method

ISO 22007-4:2017

Plastics – Determination of Thermal Conductivity and Thermal Diffusivity – Part 4: Laser Flash Method

Parameters

Item	Specification
Sample size	Ø12.5 × 0.5–5 mm; square 10 × 10 mm; thickness 1–5 mm
Thermal conductivity range	0.1–2000 W/m·K
Thermal diffusivity range	0.1–1000 mm²/s
Accuracy	Thermal diffusivity ±4%, Specific heat ±5%
Test temperature range	Room temperature; RT–200 °C, RT–300 °C, RT–500 °C (optional)
Temperature precision	≤0.1 °C with high-temperature inert gas protection
Heating rate	≥5 K/min
Repeatability	Deviation <±3%
Laser source	Max 15 J/pulse, pulse width 0.1–10 ms, continuous adjustment, software controlled
Laser spot	Adjustable
Detector	Infrared MCT-CT, air-cooled
Sampling frequency	Up to 200 kHz
Control system	PLC + Windows, fully automatic software for measurement, analysis, and report generation
Power supply	AC 220 V, 500 W

Features

High-precision transient laser flash method for thermal diffusivity and conductivity

Non-contact testing, suitable for small samples

Rapid measurement, wide temperature range (room temperature to 500 °C)

Suitable for metals, ceramics, graphite, diamond, graphene, silicon carbide

Accurate data processing via dedicated mathematical models

Full automation: laser control, temperature control, data acquisition, calculation, and report generation

Optional high-temperature inert gas protection for reactive materials

Accessories

Main instrument

Analysis software package

Computer (e.g., Lenovo or user-specified)

Calibration reference samples (2 pieces)

Graphite spray (imported, 3 bottles)

Test Procedures

Prepare a flat, parallel sample with precise thickness measurement.

Apply graphite coating on transparent or semi-transparent samples, if necessary.

Place the sample in the copper sample holder and align it precisely with the laser and infrared detector.

Set laser pulse energy, pulse width, and temperature parameters via the control software.

Start the measurement sequence; the system automatically controls the laser pulse, temperature, and data acquisition.

Record the rear-surface temperature rise and compute half-rise time.

Use the software to calculate thermal diffusivity and thermal conductivity.

Review, store, and export the measurement report.

Maintenance Information

Keep laser optics clean and free from dust.

Ensure the sample holder and infrared detector are properly aligned.

Replace graphite spray bottles as needed for accurate absorption on transparent samples.

Maintain stable AC power supply and proper environmental conditions.

Perform regular calibration using reference samples to ensure measurement accuracy.

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