JJG 188-2002 Sound Level Meters Verification Regulation

About this manual

JJG 188-2002 defines the verification requirements for sound level meters, covering measurement accuracy, environmental conditions, and testing procedures. It references IEC 61672‑1:2002 and other national standards such as GB 3102.7‑1993.

The document outlines the classification of meters, the required performance parameters (e.g., dB scale, frequency weighting), and the methods for calibration and uncertainty evaluation. It also provides tables of permissible error limits and guidance on measurement environments. This manual is written in Chinese.

What's inside

• Scope and applicability
• References and related standards
• Classification of sound level meters
• Performance requirements
• Calibration and verification methods
• Uncertainty evaluation
• Environmental conditions

Frequently asked questions

Which international standard does JJG 188‑2002 refer to for acoustic specifications?

It refers to IEC 61672‑1:2002 for electro‑acoustic specifications of sound level meters.