Tortuosity meter
Mecanum’s ultrasonic tortuosity meter measures the tortuosity and characteristic parameters of a wide range of porous materials used in noise control. It works by ultrasonic transmission and reflection: the transmission method suits low-resistivity materials, while the reflection method handles more resistive materials, using porosity as an input. Available in 1-gas and 2-gas options for slightly different measured properties, the tortuosity meter gives you high-frequency Biot parameters that are essential to accurate acoustic modeling, well suited to quality control, supplier validation, and new material development.
Measuring range
Recommended first measurement frequency range
100 to 900 kHz, by step of 50 kHz
Maximal frequency range
60 to 1000 kHz
Min and max tortuosity
1 to depends on material
Dimensions
Transmission test bench
255 (Ø) x 300 (H) mm (2-gas option: 292 (Ø) x 446 (H) mm)
Reflection test bench
305 (L) x 215 (W) x 215 (H) mm
Sample
Maximum sample thickness: 25.4 mm
Maximum sample diameter: 100 mm
Measured properties
TOR-X
TOR-X is a single-window software that pilots ultrasonic tortuosity measurement from acquisition through post-processing, with an extremely clear, simple workflow. Its post-processing tool displays results and statistics directly, so you read your measurement without leaving the interface. The transmission method suits low-resistivity materials, while the reflection method handles more resistive ones, both driven from the same straightforward software.
2 gas extension
TOR-X 2 gas extends the transmission method to compute the viscous and thermal characteristic lengths, key JCA parameters, from two transmission measurements, one in air and one in helium. It keeps the same clear interface and direct display of results and statistics, adding these advanced parameters without adding complexity.
Coming soon.
Material manufacturers
Test tortuosity and characteristic lengths at the end of the line to guarantee both material performance and process consistency.
Laboratories
Measure the full set of high-frequency Biot parameters on porous samples, on resistive and low-resistivity materials alike.
Universities
Research the high-frequency transport properties of porous media with ultrasonic transmission and reflection methods.
Optional accessories, available with your tortuosity meter or separately.
Circular knife
The circular knife lets you cut clean, repeatable sample geometries from porous materials, so each specimen fits the tube precisely and edge effects stay minimal. Consistent sample preparation is one of the simplest ways to improve measurement repeatability.
Material slicer
The material slicer holds a porous sample firmly in place while you cut it to thickness, giving you flat, parallel faces and a controlled height. It removes much of the guesswork from preparing soft or compressible materials that are otherwise hard to slice evenly.
Weather station
The weather station measures the ambient temperature, pressure, and humidity at the moment of testing, the atmospheric conditions that influence the speed of sound and, in turn, your acoustic results. Logging them alongside each measurement keeps your data accurate and traceable.