TPS-3 Transient Plane Source

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, pastes, and powders

transient plane source (TPS-3)

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

Specifications

Materials

Solids, 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%.
Glass thermal conductivity testing

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 316

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


MP-1 with TPS

TPS-2

TPS-3

TPS-4

Models

MP-1 with TPS

TPS-2

TPS-3

MP-2 with TPS-4

Thermal Conductivity Range

0.005 to 1800 W/m•K

0.01 to 100 | 0.01 to 500 W/m•K

0.03 to 80 W/m•K

0.03 to 5 W/m•K

Additional Properties

Thermal Diffusivity, Specific Heat, Thermal Effusivity, Contact Resistance

Thermal Diffusivity, Specific Heat, Thermal Effusivity

Thermal Diffusivity, Specific Heat, Thermal Effusivity

No

Sample Size (mm)

5 x 5 to unlimited

10 x 10 to unlimited

40 x 40 to unlimited

35 x 35 to unlimited

Sample Thickness (mm)

0.01 to unlimited

0.1 to unlimited

5 to unlimited

5 to unlimited

Test Time (seconds)

0.25, 0.5, 1, 2, 3, 4, 5, 10, 20, 40, 80, 160, 320, 640, 1280

2, 3, 4, 5, 10, 20, 40, 80, 160

10, 20, 40, 80, 160

20 and 40

Temperature Range

Room Temperature

0 to 300 °C

-160 | -50 | -20 | 0 to 300 °C

Room Temperature

RT to 300 °C

-75 to 200 °C

Room Temperature

10 to 80 °C

Room Temperature

10 to 40 °C

Two-Sided (Symmetric) Sensor

Yes

Yes

Yes

No

Single-Sided (Asymmetric) Sensor

Yes

Yes

No

Yes

TPS Sensors (Radius, mm)

0.5, 0.8, 2, 3.2, 6.4, 10, 15, 30

2, 3.2, 6.4, 10

10

6.4

Contact Resistance (units)

Measured & Manual

Manual

Manual

Automatic

Bulk – 3D Thermal Conductivity

Yes

Yes

Yes

Yes

Anisotropic Thermal Conductivity

Yes

Yes

No

No

Slab Thermal Conductivity

Yes

Yes

No

No

Direct Specific Heat

Yes

Yes

No

No

1-D – Thermal Conductivity

Yes

No

No

No

Thin-Film / Coatings

Yes

No

No

No

Integrated Switch

(x 4 channels)

Yes

No

No

No

Temperature Platforms

Yes

No

No

No

Ovens - Automated

Yes

Yes

No

No

Optional THW Method for Liquids

Yes

No

No

Yes

ISO 22007-2 Compliant

Yes

Yes

No

No

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