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

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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%.

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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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