The TPS-2 transient plane source is designed to test the absolute thermal conductivity, thermal diffusivity, specific heat of solids, pastes, viscous liquids and powders.
Best For Solids, Pastes, and Powders
Test Method
Temperature
Range
The Transient Plane Source (TPS) for solids, pastes and powders is widely used for accurate measurement of absolute thermal conductivity, thermal diffusivity, specific heat, and thermal effusivity. Conforms to ISO 22007-2: 2015. The TPS-2 has been configured to offer a basic range of 0.01 to 100 W/m•K, with optional max power range of 0.01 to 500 W/m•K.
The sensor is electrically connected to a power supply and sensing circuit. A current passes through the sensor and creates an increase in temperature, which is recorded over time. The heat generated is then diffused into the sample at a rate dependent on the thermal transport characteristics of the material.
The TPS sensor designed for solids, pastes, and powders is comprised of a double-spiral of nickel encapsulated between layers of insulation. Standard operation of this sensor (Two-Sided) is sandwiched between two pieces of the same sample, with expanded use to Single-Sided sensor, which only requires one piece of sample (Single-Sided). The TPS calculation model measures the thermal conductivity, thermal diffusivity, volumetric specific heat and thermal effusivity of the sample.
Methods | Transient Plane Source (TPS) |
Materials | Solids, Pastes, Viscous Liquids and Powders |
Testing Modules | 3D: Bulk, Anisotropic, Slab | General: Specific Heat |
TPS Sensors (Radius mm) | 2, 3.2, 6.4, 10 |
Thermal Conductivity | Basic Range: 0.01 to 100 W/m•K Max Power Range: 0.01 to 500 W/m•K |
Sample Size* | 10 x 10 mm to unlimited |
Sample Thickness* | 0.1 mm to unlimited |
Additional Properties | Thermal Diffusivity | Specific Heat |Thermal Effusivity |
Sensor Contact Resistance (m²K/W) | Manually removed |
Temperature Range | -75 to 300 °C |
Test Time | 2 to 160 seconds |
Data-Points | Up to 600 points / second |
Thermal Conductivity Accuracy | 5% |
Repeatability | 2% |
Sample Configuration | Symmetric (Two-Sided) | Asymmetric (Single-Sided) |
Standard | ISO 22007-2:2015 |
*Based on testing module used.
Sensor following classic configuration for testing of solids, pastes and powders, with one sample half on top and bottom, sandwiching the sensor. This forms a semi-infinite medium.
Available: 2, 3.2, 6.4, 10 mm radius
The TPS single-sided sensor offers excellent accuracy and repeatability without the requirement of two pieces of sample. This is a very convenient sensor for testing large, hard-to-handle samples.
Available: 3.2, 6.4, 10 mm radius
Thermtest offers a growing selection of testing modules which are grouped based on their testing theory.
Bulk thermal conductivity, thermal diffusivity, specific heat and thermal effusivity.
Basic Thermal Conductivity: 0.01 to 100 W/m•K
Optional Max Power Thermal Conductivity: 0.01 to 500 W/m•K
In-plane and out-of-plane thermal conductivity and thermal diffusivity.
Basic Thermal Conductivity: 0.01 to 100 W/m•K in both axial and radial direction to the sensor plane
Optional Max Power Thermal Conductivity: 0.01 to 500 W/m•K in both axial and radial direction to the sensor plane
Isolated in-plane, for thermal conductivity, thermal diffusivity and volumetric specific heat for thin, conductive sheets.
Basic Thermal Conductivity: 0.1 to 100 W/m•K
Optional Max Power Thermal Conductivity: 0.1 to 500 W/m•K
Thickness Range: 0.1 to 5 mm
High accuracy direct measurement of specific heat. Various cell dimensions available, for improved accuracy of heterogenous materials.
Standard Test Cell: 20 mm diameter x 5 mm high
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