High level impedance tube
Mecanum’s High Level Impedance Tube is designed to measure the main acoustic indicators of a wide range of acoustic materials using 2, 3 or 4 microphones methods.
In in situ configuration, this high sound level impedance tube will be ideal for measuring the surface impedance of aeronautical liners or perforated plates and thus studying their non-linear behavior at high levels (up to 155 dB).
Why choose Mecanum’s High Level Impedance Tube?
Follows ASTM E1050, ASTM E2611 and ISO 10534-2 standards
Choosing an impedance tube compliant with ISO and ASTM standards ensures accuracy, reliability, and global acceptance. It offers precise measurements, compatibility with other equipment, regulatory compliance, and long-term value, making it a prudent choice for industries and research where absorption and transmission loss data are crucial.
Made for characterizing sound absorption and transmission loss
Mecanum High Level Impedance Tube offers a cost-effective and precise solution for characterizing sound absorption and transmission loss of acoustic materials. Its ability to utilize small samples makes them ideal for rapid prototyping and development of new materials.
Normal incidence sound absorption data is a key input for inverse or indirect characterization software such as FOAM-X. It will retrieve the physical properties of your acoustic material needed to perform advanced acoustic simulations with all commercial simulation software like NOVA, VA-one, COMSOL, Hexagon, etc.
High Level Impedance Tube techs specs
Dimensions
Nominal dimensions
- In-situ 2 microphones: 350 (L) x 170 (W) x 190 (H) mm
- 3 microphones: 890 (L) x 170 (W) x 190 (H) mm
- 4 microphones: 1140 (L) x 170 (W) x 190 (H) mm
Max sample thickness
- 2 microphones absorption: 250 mm
- 3 microphones transmission: 220 mm
- 4 microphones transmission: 125 mm
Sample diameter: 29 mm
Measuring range
Frequency range: 300 to 6300 Hz
White noise or sine sweep excitation: up to 155 dB
Hard wall measurement (zero absorption):
- All ⅓ octave until 4 kHz < 4 %
- ⅓ octave 5 kHz and above < 10 %
What’s in the box
Impedance and transmission tube with digital piston for thickness reading
Adapter for In Situ testing
Microphones
24-bits 4-inputs/1-output acquisition system with integrated audio amplifier
Verification sample
TUBE-X measurement software
Carrying box
Measured properties
Accessories
Accessories for porous materials
Circular knive
Allows better control of porous material samples geometry.
Material slicer
Holds a porous sample in place during slicing.
Weather station
Allows to measure the air atmospheric conditions.
Muffler adapters
Designed to fully measure acoustics indicators of mufflers.
