ROGA SW420R Impedance Tube User Manual

ROGA SW420R Impedance Tube User Manual

Change History

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BSWA and its logo designs are registered trademarks of BSWA Technology Co., Ltd.. Other product or company names mentioned herein are trademarks or business names of their respective owners.

There is no warranty, position or other implication of any kinds in this manual. BSWA and its employees are not liable for any direct or indirect loss of data, benefits, etc. due to any information contained or mentioned in this manual. BSWA has the final authority to interpret this manual.

Introduction

General Description

SW420R is designed according to ISO 13472, which specifies a test method for measuring the sound absorption properties of road surfaces on site with impedance tube. This method enables evaluation of sound absorption characteristics without damaging the surface. The test results also can be used to qualify the absorption characteristics accordance with ISO 362 and ISO 18044.

The use of SW420R and the algorithm is the same as description in ISO 10534 (equivalent to GB/T 18696), VA-Lab IMP module can be used directly with this product.

Applications

• Measurement the sound absorption properties of road surfaces on site

Features

• Specially designed for measurement of sound absorption properties of road surfaces
• Integrated design, portable and stable
• Selected sealing material, reduce leak of sound signal

Specification

SW420R Impedance Tube

Standards| ISO 13472-2:2010, ISO 10534-2:1998, GB/T 18696.2-2002
Frequency Range| 250 Hz ~ 1600 Hz (1/3 Octave) / 220 Hz ~ 1800 Hz
Inner diameter| 100 mm
Length of tube| 680 mm (including handle)
Microphones| 1/4” ICCP MPA416
Microphone Spacing| 80 mm
Height of microphone to ground| 150 mm
Totally reflective sample| Stainless steel plate: Ø195mm x 10mm
Weight| 14 kg
Shipping case size (mm)| W740 x H360 x D410

Packing List

Instructions

Structure and Assembly

1. SW420R Impedance tube

2. Audio cables
   Audio cable with banana plug used to input the signal to the impedance tube.

3. Totally reflective sample

4. Power Amplifier (optional)

5. Data Acquisition (optional)

6. Computer (optional)

7. Microphone (optional)
   1/4” IEPE MI19

How to Use

• Put the SW420R impedance tube on the road surface, make sure the tube be placement stability.
• Connect the tube and the power amplifier (optional) by audio cable. The signal generator and sound card can be use as signal source.
• Insert the MI19 microphone (optional) into the microphone hole of the tube, and connects the microphone to data acquisition via cable to build a measurement system.
• Input the driving signal to check the speaker inside the impedance tube working properly, then star measurement.

Operation Notes

Operation

• Keep out the water and any other liquid due to no waterproof design on this product.
• Please follow the introduction and using step in the user manual. Do not drop, knock or shake the product. Any operation over the limit could damage the product.

Calibration

SW420R has been calibrated before sales. Keep regular calibration can ensure the accuracy of the measurement. BSWA provide the calibration service for acoustic products.

Warranty

BSWA can provide warranty service during the warranty period. The component could be replaced according to the determination of BSWA to solve the issue caused by materials, design or manufacture.

Please refer to the product warranty promise in sales contract. Do not try to open or repair the device by customer. Any unauthorized behavior will result in loss warranty of this product.

Customer Service Phone Number

Please do not hesitate to contact us for any issue:

Customer Service Phone Number: +86-10-51285118 (workday 9:00~17:00)

Sales Service: Please visit BSWA website www.bswa-tech.com to find the sales.

Pho ne Number: number of your region.

SW420R Impedance Tube User Manual
BSWA-III-C021-04-P0276
v1.1
Copyright © 2018 BSWA Technology Co., Ltd.
The specification of product is subject to changes without notice
www.bswa-tech.com
Nov. 2018

Annex Typical Measured Data of SW420R

1. Measured data of totally reflective sample
   Hz| Abs.| Limits
   ---|---|---
   250| 0.014| 0.03
   315| 0.014| 0.03
   400| 0.014| 0.03
   500| 0.013| 0.03
   630| 0.009| 0.03
   800| 0.015| 0.03
   1000| 0.023| 0.03
   1250| 0.007| 0.03
   1600| 0.015| 0.03
2. Typical test results of concrete: three test results to verify its repeatability
   

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