Versatile Thermal Property Analyzer: MP-V
Versatile measurement platform with accurate methods for thermal conductivity, thermal diffusivity, specific heat and thermal effusivity of solids, liquids, pastes and powders.
- Transient Plane Source (TPS): ISO 22007-2, ISO 22007-7, GB/T 32064 (solids)
- Transient Hot Wire (THW): ASTM D7896 (liquids)
- Modified Transient Plane Source (MTPS): ISO 22007-7:2023
- Transient Line Source (TLS): ASTM D5334-22a, ASTM D5930
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.
MP-V Methods:
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 placed between two pieces of the same sample, with expanded use to Single-Sided sensor, which only requires one piece of sample (Single-Sided). Our proprietary 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 and phase change materials (PCMs) 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.
Transient Line Source (TLS) Sensor
The TLS sensor designed for soil, paste and polymers consists of a thin heating wire and temperature sensor sealed in a steel tube. The sensor is completely inserted into the sample to be tested. Heat is delivered to the sample using a constant current source (q) and the temperature rise is recorded over a defined period of time. The slope (a) from plot of temperature rise versus logarithm of adjusted time is used in the calculation of thermal conductivity (k).
Transient Hot Strip (THS) Sensor
The THS sensor shares the same theory and sample configuration as the TPS sensor, with the unique ability to measure complex shapes. Results include thermal conductivity, thermal diffusivity, and volumetric specific heat of the sample. Bulk, Anisotropic, and Slab modules available.
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 Anisotropic, Slab, Finite, Thin-Film 1-D: Standard, 1-D Slab, TR Thin-Films, TR Contact Resistance General: Specific Heat |
Bulk |
3-D: Bulk, Anisotropic, Slab Anisotropic, Slab | 1-D: Standard, 1-D Slab |
Bulk |
| Thermal conductivity (W/m•K) | 0.005 to 2000 | 0.01 to 2 | 0.03 to 500 | 0.01 to 2 |
| Thermal diffusivity (mm²/sec) | 0.01 to 1200 | Up to 0.5 | 0.01 to 300 | Up to 0.5 |
| Specific heat (J/kg-K) | Up to 5 | Up to 5 | Up to 5 | Up to 5 |
| Thermal effusivity (W√s/m²K) | 5 to 60000 | N/A | 20 to 40000 | N/A |
| Test time (seconds) | 0.25 to 2560 | 1 | 0.25 to 2560 | 180 |
| Accuracy (Thermal conductivity) | 3% | 2% | 5% | 5% |
| Repeatability (Thermal conductivity) | 1% | 1% | 2% | 2% |
| Temperature range (°C)** |
0 to 300 -160 | -45 to 300 up to 750 / 1000 |
10 to 200 -40 to 200 -160 | -40 | 0 to 300 |
0 to 100 | -50 to 200 | -40 to 100 |
| 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. |