Product Data

Products > Material Testing Devices > Impedance Tube
Impedance Tube SW230/SW260/SW433/SW466/SW422/SW477

 

IMPEDANCE TUBES

Model

SW230

SW260

SW420

SW470

SW422

SW477

Value to be Measured

Sound Absorption Coefficient ()

Sound Absorption Coefficient () and Transmission Loss(TL)

Standard

GB/T-18696, 2-2002, ISO10534-2, 1998

Sound Absorption Standard: GB/T-18696, 2-2002, ISO10534-2, 1998;
Transmission Loss(TL) Standard in Discussion

Frequency Range (Hz)

125 ~ 3150

125 ~ 6300

63 ~ 1800

800 ~ 6300

63 ~ 1800

800 ~ 6300

Inner Diameter of Testing Tube

60 mm

60 & 30 mm

100 mm

30 mm

100 mm

30 mm

Loud speaker

4 in diameter, 20 Watts, 8 Ohm

OPTIONAL ITEMS

1/4 Microphone

MPA416

Data Acquisition Card

MC3022+PA50 or MC3522

MC3242 / MC3242

Power Amplifier

PA50

Software

VA-Lab2 Basic + VA-Lab2 IMP-A

VA-Lab4 Basic + VA-Lab4 IMP-AT

SW series Impedance Tubes can accurately measure sound absorption coefficients and impedance according to standards described in ISO10534-2 (1998). They are based on the Transfer Function Method, which is much faster than the commonly used Standing Wave Ratio Method.

The SW series Impedance Tubes are specially designed not only to work with the cut samples, but also for direct use in the field. The small size and durable aluminum construction make it easy to transport and be used for estimating the properties of walls, ceilings, installed building materials, road surfaces, different ground surfaces, interiors of vehicles, etc.

BSWA offers the complete set of Impedance Tube system, which includes: the tubes, microphones; DAQ hardware and measurement software.

Material Testing Devices

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