GB/T 21229-2007Acoustics -- Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room (English PDF)
声学 风道末端装置、末端单、风道闸门和阀噪声声功率级的混响室测定
This is a limited preview
Buy now to download the full PDF (12 pages)
Need quotation for your management?
Get a formal quotation for GB/T 21229-2007 in 30 minutes.
Issued by
Standardization Administration of China
Level / Type
National · Recommended
Issue date
November 14, 2007
Implementation date
May 1, 2008
Scope
GB/T 21229-2007 is the English-translated version of 声学 风道末端装置、末端单、风道闸门和阀噪声声功率级的混响室测定.
GB/T 21229-2007 — This standard is intended to establish general guidelines according to GB/T 14367 provisions acoustic measurements for air under the ISO 3258 rationing Air terminal devices and air diffusion system used, terminal units, duct and valve gate noise sound power level measurement.
Found what you need?
Document preview — GB/T 21229-2007
National Standard of the People's Republic of China
- ICS
- 17.140.01
- Classification
- A 59
Issued by: Standardization Administration of China
Contents
- What this standard covers1
- Document data2
What this standard covers
This standard specifies the requirements for acoustic testing according to GB/T14367 general guidelines as provided for ISO3258 and air diffuser aeration system used by air terminal device, the end of a single, duct dampers and valves Determination of sound power levels of noise.
Document data
International classification (ICS): 17.140.01.
Chinese classification (CCS): A59.
Estimated length of the Chinese original: 17,146 words.
Adopted international standard: ISO 5135-1997, IDT.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 14367Acoustics -- Determination of sound power levels of noise sources -- Guidelines for the use of basic standards
- GB/T 14367-2006Acoustics -- Determination of sound power levels of noise sources -- Guidelines for the use of basic standards
- GB/T 6881.1-2002Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
- GB/T 6881.1Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
ISO 3740 · ISO 3741 · ISO 3258 · ISO 5219 · ISO 5220
How to Download GB/T 21229-2007
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 14367-2006 — Acoustics -- Determination of sound power levels of noise sources -- Guidelines for the use of basic standards
GB/T 6881.1-2002 — Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
GB/T 3402.2-2026 — Plastics - Homopolymer and copolymer resins of vinyl chloride - Part 2: Preparation of test samples and determination of properties
Secure payment via Stripe
Payments accepted
GB/T 21229-2007
$319.00