The TPS-EFF is a portable meter for direct determination of thermal effusivity for textiles and other low effusivity materials, in accordance with ASTM D7984-16.
Determine effusivity for compressible materials with our new compression stand.
Use thermal effusivity to select materials that are comfortable, regardless of the season.
Thermal Effusivity is used to determine materials that can hold the cool effect in mattresses and pillows.
Outdoor apparel is heavily reliant on the measurement of effusivity to determine performance, especially critical for cold temperature exposure.
Sleep products such as mattresses, pillows, or linens rely on thermal effusivity measurements to help manufacture cozier products.
Automotive interiors use effusivity to determine the best materials that help create a comfortable experience for the driver and passengers.
Thermal Effusivity influences the purchase of clothing, especially in athletic wear and outdoor sports apparel as the ability to keep warm or cool during activities is crucial.
Many industries use effusivity to create the perception of comfort for consumers.
Thermal Effusivity (W√s/m2K) is described as a materials ability to exchange heat with its surroundings. The feeling of warmth and coolness (thermal effusivity) of a touched material surface plays a key role in the perceived feeling of comfort, or the desired effect. This is an important field of measurement for consumer products, primarily with textiles, fabrics and solids.
| Materials | Textiles, Fabrics and Solids |
| Measurement Capabilities | 1-Dimensional |
| Thermal Effusivity Range | 35 to 1700 W√s/m2K |
| Measurement Time | 2 and 10 seconds |
| Reproducibility | 2% |
| Accuracy | 5% |
| Temperature Range1 | -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 |
| Standards | ASTM D7984-16 |
| Test Method | Transient Plane Source (TPS) |
The TPS-EFF can measure thin samples in 2 seconds and layered materials in 10 seconds.
Samples as low as 30 mm in diameter can be tested. No maximum size.
When used with a compression stand and environmental chamber, the TPS-EFF has can measure the effect of compression and humidity and temperature of a materials thermal effusivity.
