An advanced portable meter with unique selection of transient thermal conductivity sensors for a variety of applications, with a focus on primary measurements.
The MP-2 is an advanced meter with unique selection of transient thermal conductivity sensors for a variety of applications, with a focus on primary measurements. The transient thermal conductivity sensors share similar principles of operation. The sensor wire is heated using a constant current source (q), and the temperature rise is recorded by monitoring the change in electrical resistance of the wire (TPS and THW) or by a resistance temperature detector device (TLS). For samples of high thermal conductivity, the lower the slope; for samples of low thermal conductivity, the higher the slope.
For convenience, the auto-testing function can be programmed on-board or with the MP-2 Windows utility software. Additional on-board, and utility features include the ability to review, save or delete, and export results to Excel. To maximize portability, power can be supplied by battery or USB cable. Informative screen icons keep users informed about power status and testing progress.
SENSORS | MATERIALS |
|---|---|
TPS-4 | Solids, Pastes and Powders |
THW-L3 | Liquids and Pastes |
TLS 50 mm | Rock and Concrete |
TLS 100 mm | Soils and Polymers |
TLS 150 mm | Soils and Polymers |
TLS 100 mm – vCp | Soils and Polymers |
THW-S | Insulation and Soft Materials |
TPS-EFF | Textiles and Fabrics |
TPS-4 | |
|---|---|
Materials | Polymers and Composites |
Measurement Capabilities | 0.03 to 5 W/m•K |
Thermal Conductivity | Bulk Properties |
Measurement Time | 10 and 20 seconds |
Reproducibility | ± 2% |
Accuracy | ± 5% |
Temperature Range | 10 to 40°C |
Minimum Sample Size | 35 mm diameter or square |
Maximum Sample Size | Unlimited |
Sensor Diameter | 12.8 mm Diameter |
Test Method | Transient Plane Source (TPS) |
TLS 50mm | TLS 100mm | TLS 150mm | |
|---|---|---|---|
Materials | Concrete, Rock, and Polymers | Soils, Pastes, Powders, and Solids | Soils, Pastes, Powders, and Solids |
Measurement Capabilities | Bulk Properties | Bulk Properties | Bulk Properties |
Thermal Conductivity | 0.3 to 5 W/m•K | 0.1 to 5 W/m•K | 0.1 to 3 W/m•K |
Thermal Resistivity | 0.2 to 3.3 mK/W | 0.2 to 10 mK/W | 0.3 to 10 mK/W |
Measurement Time | 3 min. | 3 min. | 3 min. |
Reproducibility | ± 2% | ± 2% | ± 2% |
Accuracy | ± 5% | ± 5% | ± 5% |
Temperature Range | -40 to 100°C | -40 to 100°C | -40 to 100°C |
Minimum Sample Size | 50 mm in length, 50 mm diameter | 100 mm in length, 50 mm diameter | 150 mm in length, 50 mm diameter |
Largest Sample Size | Unlimited | Unlimited | Unlimited |
Standards | Modified ASTM D5334-22 | ASTM D5334-22, IEEE 442-1981 | ASTM D5334-22, IEEE 442-2017 |
TLS 100mm - vCp | |
|---|---|
Materials | Soils, Pastes, Powders, and Solids |
Measurement Capabilities | Bulk Properties |
Thermal Conductivity | 0.1 to 5 W/m•K |
Reproducibility | ± 2% |
Accuracy | ± 5% |
Thermal Diffusivity | 0.05 to 1.5 mm²/s |
Accuracy | ± 10% |
Volumetric Specific Heat | Up to 2.5 MJ/m³K |
Accuracy | ± 15% |
Temperature Range | -40 to 100°C |
Minimum Sample Size | 100 mm in length, 50 mm diameter |
Largest Sample Size | Unlimited |
Standards | ASTM D5334-22 |
THW-L3 | THW-S | |
|---|---|---|
Materials | Liquids, Pastes, and Powders | Insulation and Soft Materials |
Measurement Capabilities | Bulk Properties | Bulk Properties |
Thermal Conductivity | 0.01 to 1 W/m•K | 0.01 to 2 W/m•K |
Measurement Time | 1 second | < 5 seconds |
Reproducibility | ± 2% | ± 2% |
Accuracy | ± 5% | ± 5% |
Temperature Range | 10 to 40°C | 10 to 40°C |
Minimum Sample Size | 15 mL | 50 mm x 10 mm |
Largest Sample Size | Unlimited | Unlimited |
Standards | ASTM D7896-19 | N/A |
TPS-EFF | |
|---|---|
Materials | Textiles, Fabrics, and Solids |
Measurement Capabilities | 1-Dimensional |
Thermal Conductivity | 35 to 1700 W√s/m²K |
Measurement Time | 2 and 10 seconds |
Reproducibility | ± 2% |
Accuracy | ± 5% |
Temperature Range | -10 to 50°C |
Minimum Sample Size | 35 mm diameter x thickness dependent on Effusivity |
Maximum Sample Size | Unlimited |
Moisture Range | 0 to 90% (non-condensing) |
Sensor Diameter | 30 mm |
Test Method | Transient Plane Source |
Standard | ASTM D7984-16 |
| | | ||
|---|---|---|---|---|
Models | ||||
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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| ||
|---|---|---|---|---|
Models | ||||
Materials | Liquids, Pastes, and Powders | Liquids, Pastes, and Powders | Liquids, Pastes, and Powders | Liquids, Pastes, and Powders |
Testing Modules | Bulk | Bulk | Bulk | Bulk |
Other Materials | Solids with TPS | No | No | Solids with TPS, TLS |
Thermal Conductivity | 0.01 to 2 W/m•K | 0.01 to 2 W/m•K | 0.01 to 2 W/m•K | 0.01 to 1 W/m•K |
Sample Size | 20 mL | 20 mL | 15 mL | 15 mL |
Additional Properties | Thermal Diffusivity and Specific Heat | Thermal Diffusivity and Specific Heat | No | No |
Temperature Range | Room Temperature 10 to 200 °C | -50/-15/0 to 200 °C -160/-45/-15/0 to 300 °C | 10 to 200 °C | -50/-15/0 to 200 °C -160/-45/-15/0 to 300 °C | -50 to 100 °C | Room Temperature 10 to 40 °C |
Pressure | Up to 35 bar* | Up to 35 bar* | Ambient | Ambient |
Test Times | 1 second | 1 second | 1 second | < 5 seconds | 1 second |
Data-Points | 400 points/second | 100 points/second | 60 points/second | 60 points/second |
Thermal Conductivity Accuracy | 2 % | 2 % | 5 % | 5 % |
Repeatability | 1 % | 1 % | 2 % | 2 % |
Standards | ASTM D7896-19 | ASTM D7896-19 | ASTM D7896-19 | ASTM D7896-19 |
External Cooling Apparatus Required | No | Yes* | No | Yes* | Yes | Yes |
Transient Plane Source
Thermal Conductivity
Temperature Range
Accuracy
Transient Hot Wire - Liquids
Thermal Conductivity
Temperature Range
Accuracy
Transient Line Source
Thermal Conductivity
Temperature Range
Accuracy
Transient Line Source
Thermal Conductivity
Temperature Range
Accuracy
Transient Line Source
Thermal Conductivity
Temperature Range
Accuracy
Transient Line Source
Thermal Conductivity
Temperature Range
Accuracy
Transient Hot Wire - Solids
Thermal Conductivity
Temperature Range
Accuracy
Transient Plane Source
Thermal Effusivity
Temperature Range
Accuracy
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