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Home >> Business >> Environmental Reliability Testing www.cvc.org.cn
Noise Testing
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  1.Introduction
 
Noise refers to a kind of sound that causes psychological or physiological displeasure to people. In the worst case, it may cause hearing damage or illness, disturb people’s normal life and work. Therefore, it is necessary to monitor the noise level of products and reduce the influence that may be caused to the human mentality. The compulsory standard GB 19606-2004 (Noise limit value for household and similar electrical appliances) was issued in 2004. The European Union has issued the regulation of noise 2000/14/EC (Noise emission in the environment by equipment for use outdoors). The ENERGY STAR of U.S. has also issued compulsory regulation for the loudness of relevant products.
 
  2.Test Scope
Product Scope
Household appliance
Auto parts
Electrical tools
Marine/fishing equipments
Lighting products
IT equipments
AV equipments
Medical equipments
Toys
Wireless products
Electrical accessories
 

Test Items:
     
Sound pressure level measurement GB/T 7725、GB/T 19232、GB/T 2888、ISO 7779、ISO 5802
Sound power level measurement GB 19606、GB/T 18313、GB/T 6882、GB/T 4214 series、GB/T 10069 series、IEC 60704 series、IEC 60034-14、JIS C 9613、BSEN 12102
a/v/s GB 10068、JB/T 10490、IEC 60034-14、EN 60745、EN 61029
CPB、FFT、Overall Analysis GB 9068、B21 7120、YD/T 1816、C-S1-9700
Technical requirement of enterprises
Pure tone and pulse measurement GB/T 18313、ISO 7779、ECMA-74、ETS 300753
Sound absorption coefficient measurement/Acoustic impedance measurement GB/T 18696、GB/T 16731、ASTM E 1050、ASTM C 423、ISO 10534-2、ISO 354、JIS A 1405-2、EDS-T-9322、MS 200
 
  3.Expert Team

CVC is the chairman organization of the Technical Subcommittee on Testing of Climate of the National Technical Committee on Environmental Conditions and Methods of Test for Electric and Electronic Product of Standardization Committee, Testing Center of Environmental Adaptability for Mechanical Industry, PTP of low temperature testing of CNAS. Testing service team of high efficiency will provide the most professional service to our partners

  4.Test Equipments and Facilities

CVC has two semi-anechoic test chambers, the characteristics of sound field of which comply with the requirement of ISO 3745, and the noise of background of which can be lower than 12dB (A) . At the same time, the working condition of temperature and humidity inside can be adjusted, which can comply with the requirement of the low noise measurement under the designated condition and reach the internationally advanced level in the area of noise measurement. CVC can offer measurement services such as sound pressure, sound power, vibration, acoustic absorptivity, coefficient of reflection, acoustic impedance, pure tone and pulse using world-class B&K high-precision measuring instrument, testing and analysis of CPB, FFT and Overall, and help enterprises to carry out the risk assessment for the noise value of series of products.

 

 

 

 

                                             

 

 

 
  5.Other Value-added Services

 As one of the largest testing and evaluation authorities with the longest history and the strongest power, CVC can provide:
Comprehensive testing and evaluation services of safety, performance, EMC, material and environment of products such as household appliances, vehicle and auto parts, electric accessories, compressors, motors, lighting products, welding machines, electronic appliances, batteries, toys, mechanical appliances, internal combustion engines.
Through quality service assurance of industrial chain such as certification of products and system, calibration, inspection, training, service of standards and industries, proficiency test, technical consultation, CVC helps our partners to keep their competitive advantages.

  6.Contact Us

CVC-Guangzhou(Headquarter)

ContactMr.Jian, Ms.Lan

Tel020-32058389020-32290964

Fax020-32293889-3784

E-mailjianwb@cvc.org.cnlanxin@cvc.org.cn

CVC-Zhongshan

ContactMr.Chen, Ms.Zhou

Tel0760-23380623,0760-23380023

Fax0760-23380886

E-mailchenxh@cvc.org.cn,zhoucn@cvc.org.cn

CVC-Jiaxing

ContactMr.Wu

Tel0573-82586257

Fax0573-82586885 

E-mailwuzy@cvc.org.cn

CVC-Wuhan

ContactMr.Li, Ms.Cao

Tel027-84777155027-84845096-839

Fax027-84844620

E-mailoffice_wuhan@cvc.org.cn

CVC-Hong Kong

ContactMr.Chen, Mr.Lo

Tel00852-2607418018926128940

          00852-9510344814716143448

Fax00852-26074355

E-mailleechen@cvc.org.cn,laodw@cvc.org.cn

CVC-International Business

ContactAlex Wei

Tel020-32368069

Fax020-32293700

E-mailweiqy@cvc.org.cn



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