MP-V Versatile Measurement Platform

Versatile measurement platform with accurate methods for thermal conductivity, thermal diffusivity, specific heat and thermal effusivity of solids, liquids, pastes and powders.

tps sensor

TPS

  • ISO 22007-2, GB/T 32064
  • Solids, pastes, powders
mtps sensor

MTPS (optional)

  • ISO 22007-7
  • Solids, pastes, powders
thw sensor

THW

  • ASTM D7896
  • Liquids

TLS (optional)

  • ASTM D5334-22a, D5930, IEEE-442
  • Soil, polymers
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Features

Transient methods share similar theory with differences that are specific to their primary design.

The sensors are electrically connected to a power supply and sensing circuit. A current passes through the sensors 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.

iTransient

Intelligent transient design for automation of testing and analysis. Raw data is always available to empower understanding of your results. Name your sample, iTransient does the rest.

process
  • Transient Plane Source
  • Transient Hot Wire
  • Modified Transient Plane Source
  • Transient Line Source

Methods

TPS sensor

Transient Plane Source Sensor (TPS, ISO 22007-2, ISO 22007-7 / GB/T 32064)

The TPS sensor designed for solids, pastes, and powders is comprised of a double-spiral of nickel encapsulated between layers of insulation (Kapton). Standard operation of this sensor (two-sided) is placed between two pieces of the same sample.

Our proprietary TPS calculation model measures the contact resistance between the sensor and sample, as well as the thermal conductivity, thermal diffusivity, volumetric specific heat, and thermal effusivity of the sample.

  • Solids, pastes and powders
Transient Hot Wire (THW) ASTM D7896

Transient Hot Wire Sensor (THW, ASTM D7896-19)

The THW sensor designed for liquids and phase change materials (PCMs) consists of a replaceable thin heating wire secured to a  specially designed sensor and sample cell.

This allows back pressurizing liquids to measure thermal conductivity, thermal diffusivity, and volumetric specific heat past boiling
temperatures. Measurements are done at short test times (1 second) to limit convective effects on samples with a wide range of  viscosities.

  • Liquids and PCMs
mtps sensor

Modified Transient Plane Source Sensor (MTPS, ISO 22007-7)

The MTPS sensor follows the same principles of operation as TPS. The sensor is configured for asymmetric (single-sided) testing, ideal when only one piece of sample is available. Included testing modules are bulk, anisotropic, slab and 1-D for full characterization of  diverse materials.

  • Solids, pastes and powders
Transient Line Source (TLS) ASTM D5334, IEEE 442, ASTM D5930

Transient Line Source (TLS, ASTM D5334, IEEE 442, ASTM D5930)

The TLS sensor designed for soil, pastes, and polymers. The sensor is completely inserted into the sample to be tested. Heat is delivered to the sample using a constant current source and the temperature rise is recorded over a defined period of time.

The slope from the plot of temperature rise versus logarithm of adjusted time is used in the calculation of thermal conductivity.

  • Soil, pastes, and polymers

TPS Modules

standard

Standard

Bulk thermal conductivity, thermal diffusivity, specific heat and thermal effusivity. Symmetric and asymmetric.
thinfilm

Thin-film

Thermal conductivity of thin-films and coatings according to ISO 22007-2.
anistropic

Anisotropic

Anisotropic In-plane and out-of-plane thermal conductivity and thermal diffusivity. Symmetric and Asymmetric.
specific heat

Specific Heat

High accuracy direct measurement of specific heat. Various cell dimensions available for improved accuracy of heterogenous materials.
slab

Slab

Isolated in-plane for thermal conductivity, thermal diffusivity and volumetric specific of sheets. Symmetric only.
dimensional

1-Dimensional / 1-D Slab*

Isolated out-of-plane thermal conductivity, thermal diffusivity, and volumetric specific heat for short and tall elongated shapes, rods, and bars. Asymmetric.

* Modified Transient Plane Source (MTPS) only

Specifications

Methods

TPS

THW

MTPS

TLS

Materials

Solids, pastes and powders

Liquids and PCMs

Solids, pastes and powders

Soil, pastes, and polymers

Testing modules

3-D: Bulk, Anisotropic, Slab, Thin-Film.

General: Specific Heat

Bulk

3-D: Bulk, Anisotropic, Slab.

1-D: Standard, 1-D Slab

Bulk

Thermal conductivity (W/m·K)

0.01 to 500

0.01 to 2

0.03 to 500

0.1 to 8

Thermal diffusivity (mm²/s)

0.01 to 300

Up to 0.5

0.01 to 300

N/A

Specific heat (J/kg-K)

Up to 5

Up to 5

Up to 5

N/A

Thermal effusivity (W√s/m²K)

20 to 40000

N/A

20 to 40000

N/A

Sample size (mm | mL)*

10 diameter or square

20 mL

25 diameter or square

50 diameter

Sample thickness (mm)*

0.05

N/A

0.1

100 length

Largest sample size (mm)

Unlimited

Unlimited

Unlimited

Unlimited

Test time (seconds)

2 to 160

1

2 to 160

180

Accuracy (Thermal conductivity)

5%

2%

5%

5%

Repeatability (Thermal conductivity)

2%

1%

2%

2%

Temperature range (°C)**

0 to 300

-75 to 300

-50 to 200

0 to 100 |

-50 to 200

-40 to 100

Sample configuration

Symmetric (Two-Sided) | Asymmetric (Single-Sided)

Inserted

Asymmetric (Single-Sided)

Inserted

Standard

ISO 22007-2:2022,

ISO 22007-7:2023,

GB/T 32064-2015

ASTM D7896-19

ISO 22007-7:2023

ASTM D5334-22a,

ASTM D5930-17,

IEEE 442-2017

* Based on testing module used.
** For temperature, external control required.

Applications

mp-v application materials

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