MP-1 Measurement Platform

Absolute thermal conductivity, thermal diffusivity, specific heat of solids, liquids, pastes and powders.

Testing Methods:
Transient Plane Source (TPS) ISO 22007-2 (solids)
Transient Hot Wire (THW) ASTM D7896 (liquids)
Cod Produs: MP-1 Ai nevoie de ajutor? 0723174483
  • Descriere
The powerful combination of Transient Plane Source (TPS) for solids, and Transient Hot Wire (THW) for liquids, gives the Thermtest MP-1 a unique and versatile selection of testing methods for your sample type. The TPS and THW methods are widely used for accurate measurement of absolute thermal conductivity, thermal diffusivity, specific heat, and thermal effusivity. This versatility is greatly expanded with the addition of Thermtest’s proprietary Temperature Platform (TP) which is appreciated by academic and commercial users alike.

Following ISO 22007-2 and ASTM 7896-19, the TPS and THW are primary measurement methods, trusted worldwide with 1000s of published papers.

MP-1 Methods 
The Transient Plane Source (TPS) and Transient Hot Wire (THW) share similar theory, with differences that are specific to their primary design. The basic theory is that 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.

Transient Plane Source (TPS) Sensor

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

Transient Hot Wire (THW) Sensor

The THW sensor designed for liquids, as well as pastes and small particle powders consists of a replaceable thin heating wire (40 mm in length) secured to specially designed sensor and sample cell which 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.


Methods Transient Plane Source (TPS) Transient Hot Wire (THW)
Materials Solids, Pastes, and Powders Liquids, Pastes, and Powders
Testing Modules 3D: Bulk, Anisotropic, Slab | 1D: Standard, Thin-films General: Specific Heat Bulk
Thermal Conductivity 0.005 to 1800 W/m•K 0.01 to 2 W/m•K
Sample Size* 5 x 5 mm to unlimited 20 mL
Sample Thickness* 0.01 mm to unlimited N/A
Additional Properties Thermal Diffusivity | Specific Heat |Thermal Effusivity Thermal Diffusivity | Specific Heat
Sensor Contact Resistance Measured N/A
Temperature Platform (TP) 0 to 300 °C
-160 °C | -50 °C | 0 to 300 °C
10 to 200 °C | -15/0 to 200 °C
0 to 300 °C | -45 to 300 °C | -160 to 300 °C
Extended Temperature Range -160 to 1000 °C N/A
Test Time (seconds) 0.25 to 1280 seconds 1 second
Data-Points (points / second) Up to 600 points / second 400 points / second
Thermal Conductivity Accuracy 5% 2%
Repeatability 1% 1%
Sample Configuration Symmetric (Two-Sided) | Asymmetric (Single-Sided) N/A
Standard ISO 22007-2:2015 ASTM D7896-19

*Based on testing module used.

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