Thermal Conductivity Tester – Heat Flow Meter

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Heat Flow Meter - Thermal Conductivity Tester

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Thermal Conductivity Tester (TPS Method) – High-Precision Heat Flow Meter QualiHFM™-1000

The Thermal Conductivity Tester utilizes the advanced Transient Plane Source (TPS) method to deliver fast, highly accurate measurements of thermal properties. Designed for versatility, this instrument is the ideal solution for R&D labs and Quality Control centers testing a wide variety of materials—from bulk solids to liquids and pastes.

Fully compliant with ISO 22007-2:2008, this device eliminates the common errors associated with static testing methods, offering a robust solution for measuring thermal conductivity, thermal diffusivity, and specific heat capacity.

Versatile Material Compatibility

This unit is engineered to handle a broad spectrum of material states and types, including:

Solids: Bulk insulation, polymers, metals, and ceramics.
Fluids: Liquids, pastes, and colloids.
Complex Structures: Granular materials, powders, coatings, and thin films.

Efficiency & Speed

Rapid Testing: Adjustable test durations between 5 to 160 seconds allow for high-throughput testing without sacrificing accuracy.
Direct Measurement: Measures thermal properties directly, removing the need for complex calibration curves.

Unmatched Accuracy

ISO Compliance: Strictly follows ISO 22007-2:2008 standards for international quality assurance.
Advanced Data Processing: Powered by an ARM microprocessor and high-resolution data chips, the system delivers faster analysis and higher precision than conventional thermal analyzers.
No Contact Resistance Errors: The transient method effectively negates errors caused by contact thermal resistance, a common failing of static heat flow meters.

User-Friendly Design

Minimal Sample Prep: No complex machining is required. Bulk solids only need a relatively smooth surface (at least twice the probe diameter).
Smart Interface: Features a large, color LCD touchscreen for intuitive control and real-time data visualization.
Automated Reporting: Includes robust software for automated PC communication, data management, and instant report generation.

How It Works: The TPS Advantage

Unlike traditional steady-state methods, the TPS method uses a dynamic approach to measure heat transfer.

The Setup: A proprietary "sandwich" method is used where a planar probe is placed between two layers of the sample material.
The Probe: The double-helix probe acts as both the heat source and the temperature sensor.
The Test: A strictly controlled electric current heats the probe. The system measures how quickly that heat dissipates into the surrounding sample.
The Result: Using advanced mathematical models, the system calculates thermal conductivity based on the temperature response and time delay, eliminating contact thermal resistance errors.

Thermal Conductivity Tester – Heat Flow Meter QualiHFM™-1000 Technical Specifications

Model	QualiHFM™-1000
Measurement Method	Transient Plane Source (TPS)
Thermal Conductivity Range	0.0001 - 300 W/(m·K)
Measurement Accuracy	±3%
Repeatability Error	≤3%
Measurement Time	5 - 160 seconds (Adjustable)
Sample Temperature Range	-20°C to 320°C (Requires external temperature control equipment)
Sample Temperature Rise	< 15°C during test
Probe Diameters	Probe 1: 7.5 mm Probe 2: 15 mm Probe 3: 30 mm
Required Sample Dimensions (Single Sample Size)	For Probe 1: ≥ 15 × 15 × 3.75 mm For Probe 2: ≥ 30 × 30 × 7.5 mm For Probe 3: ≥ 60 × 60 × 20 mm
Probe Power Output	Probe 1: 0 < P < 1 W Probe 2: 0 < P < 14 W Probe 3: 0 < P < 14 W
Power Supply	AC 220V (110V option available), < 500W Power Consumption
Control System	ARM Microprocessor with High-Resolution Data Chip