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Panacoustics Ltd Acoustics Consultants, Cyprus, Tel: 25-822816
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  • Home
  • About
  • Services
    • Online Acoustics Engineering and Consulting Services
  • Projects
    • Performing Spaces
    • Small Events Spaces
    • Commercial & Medical Spaces
    • Residential Spaces
    • Educational Spaces
    • Broadcasting & Recording Studios
    • Cinemas and Home Theatres
    • Recreational
    • Places of Worship
    • Entertainment & Hospitality
    • Environmental Noise Impact Assessment
    • Noise Control
    • Sound Insulation Measurements
    • Specialised Projects
  • Products
    • Sound Level Meters >
      • Cirrus Research
      • Castle Group
      • SVANTEK
      • CESVA Sound Level Meters
      • RION Sound Level Meters
      • BSWA Sound Level Meters
    • Vibration Meters >
      • Cirrus REVO Vibration Meter
      • Castle Vibration Meters
      • Svantek Vibration Meters
      • CESVA Vibrometers
      • RION Vibration Meters
    • Dosimeters >
      • Cirrus Research Noise Dosimeters
      • Svantek Noise Dosimeters
      • Cesva Noise Dosimeters
      • soundBadge
    • Noise Monitoring >
      • Sonitus Systems Noise Monitoring Solutions
      • CIRRUS Environmental Noise Kits for the Optimus Sound Level Meters
      • SVANTEK Noise and Vibration Monitoring Systems
      • CESVA TA120 Noise measuring sensor for Smart Solutions
      • SCS 9077 Noise Monitoring Station
      • RION NA 37 Environmental Sound Monitor(
    • Sound Sources & Tapping Machines >
      • Infra-QSources Noise Sources
      • CESVA Sound Sources & Tapping Machines
      • Ntek Building Acoustic Equipment
      • BSWA Sound Sources
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      • SoundEar Noise Alert Systems
    • Multi Channel Systems >
      • RIONOTE Multi-function Measuring System
      • RION SA-02 Multi Channel Signal Analyzer
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      • BSWA SW Series Impedance Tubes
      • TestSens SOUNDTUBE
      • RION Acoustical Volume & Capacity Meter
    • Audiology Instruments
    • Industrial Enclosures
    • Eckel Acoustic Panels
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BSWA SW Series Impedance Tubes

SW Series

SW Series Impedance Tubes

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:
  • Tubes with build-in loudspeakers​
  • Sample holders for absorption measurements
  • Extension tubes for transmission loss measurements
  • Microphones/Cables
  • Microphone Calibrator
  • DAQ hardware/Amplifiers
  • Measurement software
Picture

Microphones

BSWA 1/4’’ MPA416 microphones , which have excellent phase matches, are ideal for impedance applications. The microphones are directly connected to optional 2-channel MC3522 or 4-channel MC3242 data acquisition hardware using BNC-to-SMB cables. 
Picture

Data Acquisition Hardware/ Loudspeaker Amplifiers

The impedance tube systems are designed to be used with a 2-channel MC3522 or a 4-channel MC3242  data acquisition hardware cards. 
The 2-channel MC3522 is ideal for absorption measurement systems where only two microphones are necessary. The MC3522 has a built in amplifier used to power the loudspeakers of the test tubes. 
Picture
The 4-channel MC3242 is required for transmission loss measurements where 4 microphones are necessary. Unlike the MC3522, the MC3242 does not contain a built-in amplifier. As a result, a dedicated PA50 power amplifier is used to drive the loud speaker in the impedance tube.
Picture
Picture

Impedance Tube Models

Model
Measurement Capability
Frequency Range (Hz)
Tube Diameter
No of Microphones (MPA416)
DAQ Hardware
Speaker Amplifier
Microphone Calibrator, Cables, Case
Software
SW470
Absorption
1000-6100
​30mm
2
2-Channel MC3522 
Built in with MC3522
Included
VA-LAB2
SW230
Absorption
125-3000
60mm
2
2-Channel MC3522 ​
​Built in with MC3522
Included
VA-LAB2
SW260
Absorption
125-6100
​30mm and 60mm
2
2-Channel MC3522 ​
Built in with MC3522
Included
VA-LAB2
SW420
Absorption
63-1600
100mm
2
2-Channel MC3522 ​
Built in with MC3522
​Included
VA-LAB2
SW477
Absorption and Transmission Loss
1000-6100
30mm
4
4-Channel MC3242
PA50
Included
​VA-LAB2
SW433
Absorption and Transmission Loss
125-3000
60mm
4
4-Channel MC3242
PA50
Included
VA-LAB2
SW466
​Absorption and Transmission Loss
125-6100
30mm and 60mm
4
4-Channel MC3242
PA50
Included
VA-LAB2
SW422
Absorption and Transmission Loss
63-1600
100mm
4
4-Channel MC3242
​PA50
Included
​VA-LAB2
SW422
and
​SW477
Absorption and Transmission Loss
50-6100
30mm and 100mm
4
4-Channel MC3242
PA50
Included
VA-LAB2

Measurement Capabilities

The VA-Lab IMP supports two methods to measure the absorption coefficients of material:
  • Method using Standing Wave Ratio (ISO10534-1)
  • Transfer Function Method (ISO10534-2, ASTM E1050, and ASTM E2611)
The SW series impedance tubes all use the transfer function method for absorption and transmission loss testing. 
The Standing Wave Ratio Impedance tube method is a classic method for measuring acoustic characteristics of materials. Please contact us for more information if interested in such a system. 

Software

BSWA VA-Lab software includes the Impedance Tube Module (VALab IMP) which supports sound absorption and sound transmission measurement for BSWA SW series impedance tubes. The software works with BSWA MC3022, MC3522, MC3242 and MC3642 hardware for data acquisition and analysis. 
 
The software's ease of use allows the user to quickly choose between absorption and transmission loss measurement. 
 
All necessary parameters such as sample thickness and environmental conditions can be entered wihin a single window. 
 
Results from multiple tube dimensions can be combined to provide seamless results in a single frequency range. 
 
Reports can be quickly generated and exported into Excel using VA-LAB's report generator. 
  • Absorption Measurement Set-Up Screen Image
  • Transmission Loss Measurement Set-Up Screen Image
  • Absorption Results Screen Image
  • Combined Results Screen Image
  • Report Generator Window Image


Absorption Measurements Set Up
Transmission Loss Measurement Set Up
Absorption Results Screen
Combined Results
Report Generator

Picture

Services

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Products

Sound Level Meters
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Calibrators
Microphones & Accelerometers
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Audiology  Booths & Instruments 
Industrial Enclosures
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Software

Contact

P.O. Box 51443
Limassol 3505
Cyprus
T: +357 25 822816
F: +357 25 822817
​E: info@panacoustics.com
​

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