Transient Plane Source (TPS-3)

A transient plane source (TPS-3) for testing the thermal conductivity, thermal diffusivity and specific heat of solids, pastes and powders for customers with a limited budget.

Best For Solids, Powders and Pastes

Transient Plane Source

Test Method

10 °C to 80 °C

Temperature
Range

TPS-3 Transient Plane Source

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    Features

    We have designed the transient plane source (TPS-3) for testing the thermal conductivity, thermal diffusivity and specific heat of solids, pastes and powders for customers with a limited budget. The TPS-3 includes the standard TPS Sensor and software for use in combination with the Keithley 2400/2401 Source Meter. The TPS-3 can be offered as a package with a Keilthley meter or for use on your own Keithley meter.

    The basic theory is that the sensor, which is sandwhiched between two pieces of the same sample, 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.

    TPS-3 Features

    • Thermal conductivity, thermal diffusivity, and volumetric specific heat
    • Portable, Economical, and Accurate
    • Solids, Pastes, and Powders
    • No calibration or contact agent
    Specification
    Materials Solid, Pastes, and Powders
    Measurement Capabilities Bulk Properties
    Thermal Conductivity 0.03 to 70 W/m•K
    Additional Properties Thermal Diffusivity and Specific Heat
    Measurement Time 10 to 160 seconds
    Temperature Range 10 to 80 °C
    Reproducibility Typically better than 2%
    Accuracy Typically better than 5%
    Sensor Diameter 20 mm
    Smallest Sample Size 40 mm diameter x 5 mm
    Largest Sample Size Unlimited

    Testing Sensors and Applications
    Standard TPS Sensor
    Standard TPS Sensor

    Standard 20 mm diameter TPS Double Spiral Sensor (Model 46171).

    Thermal Conductivity of Insulation
    Thermal Conductivity of Insulation

    Room temperature measurement of NIST EPS 1453 was 0.032 W/m·K, RSD 0.65%, compared to expected value of 0.0332 W/m·K. Accuracy of 3.6%.

    Thermal Conductivity of Glass
    Thermal Conductivity of Glass

    Room temperature measurement of Pyrex Glass was 1.17 W/m·K, RSD 1.5%, compared to expected value of 1.15 W/m·K. Accuracy of 1.7%.

    Thermal Conductivity of Stainless Steel
    Thermal Conductivity of Stainless Steel 316

    Room temperature measurement of Stainless Steel 316 was 13.81 W/m·K, RSD 1.2%.

    Transient Plane Source (TPS) Models Comparison

    Models
    Thermal Conductivity
    Additional Properties
    Sample Size (mm)
    Sample Thickness (mm)
    Test Time (seconds)
    Temperature Range
    Two-Sided (Symmetric) Sensor
    Single-Sided (Asymmetric) Sensor
    TPS Sensors (Radius, mm)
    Contact Resistance (units)
    Bulk – 3D Thermal Conductivity
    Anisotropic Thermal Conductivity
    Slab Thermal Conductivity
    Direct Specific Heat
    1-D – Thermal Conductivity
    Thin-Film / Coatings
    Integrated Switch
    (x 4 channels)
    Temperature Platforms
    Ovens - Automated
    Optional THW Method for Liquids
    ISO 22007-2 Compliant
    MP-1 with TPS
    0.005 to 1800 W/m•K
    Thermal Diffusivity, Specific Heat, Thermal Effusivity, Contact Resistance
    5 x 5 to unlimited
    0.01 to unlimited
    0.25, 0.5, 1, 2, 3, 4, 5, 10, 20, 40, 80, 160, 320, 640, 1280
    Room Temperature
    0 to 300 °C
    -160 | -50 | -20 | 0 to 300 °C
    Yes
    Yes
    0.5, 0.8, 2, 3.2, 6.4, 10, 15, 30
    Measured & Manual
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    TPS-2
    0.01 to 100 | 0.01 to 500 W/m•K
    Thermal Diffusivity, Specific Heat, Thermal Effusivity
    10 x 10 to unlimited
    0.1 to unlimited
    2, 3, 4, 5, 10, 20, 40, 80, 160
    Room Temperature
    RT to 300 °C
    -75 to 200 °C
    Yes
    Yes
    2, 3.2, 6.4, 10
    Manual
    Yes
    Yes
    Yes
    Yes
    No
    No
    No
    No
    Yes
    No
    Yes
    TPS-3
    0.03 to 80 W/m•K
    Thermal Diffusivity, Specific Heat, Thermal Effusivity
    40 x 40 to unlimited
    5 to unlimited
    10, 20, 40, 80, 160
    Room Temperature
    10 to 80 °C
    Yes
    No
    10
    Manual
    Yes
    No
    No
    No
    No
    No
    No
    No
    No
    No
    No
    MP-2 with TPS-4
    0.03 to 5 W/m•K
    No
    35 x 35 to unlimited
    5 to unlimited
    20 and 40
    Room Temperature
    10 to 40 °C
    No
    Yes
    6.4
    Automatic
    Yes
    No
    No
    No
    No
    No
    No
    No
    No
    Yes
    No

    Request a Demonstration

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        Featured Webinar

        Thermal Conductivity of cutting fluids with the Transient Hot Wire

        Depending on the context and on which type of cutting fluid is being considered, these fluids may be referred to as cutting fluid, cutting oil, cutting compound, coolant, or lubricant. The main purposes of these fluids are to keep the object being cut at a stable temperature, maximize the life of the cutting tip, and prevent rust on machine parts and cutters.

        December 8, 2021

        speakers

        Sofia Mylona

        speakers

        Mitchell Robinson

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