GB12358-2024

Gas detection and alarm instruments for workplace—General technical requirements

作业场所环境气体检测报警仪器通用技术要求

GB 12358-2024 é uma norma nacional chinesa obrigatória vigente: Gas detection and alarm instruments for workplace—General technical requirements. Setor: Máquinas. Foco: Segurança de produtos. Entrada em vigor: 1 de jun. de 2025.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to the production and use of gas detection and alarm instruments used in workplace environments to monitor combustible gases, toxic gases, and oxygen. It covers various classifications including portable, fixed, pump-aspirated, diffusion, contact, and non-contact instruments. It is mandatory for manufacturers producing gas detectors for the Chinese market.

Requisitos técnicos

The standard specifies comprehensive performance criteria for gas detection equipment. It defines strict requirements for indication error, alarm error, and repeatability across different gas types. Instruments must feature clear display resolution, defined minimum response values, and specific response times varying by detection principle and sampling method. For alarm functionality, the standard sets precise alarm set points for combustible and toxic gases, alongside requirements for audible and visual alarms. Manufacturers must ensure instruments have robust power supply performance, including low battery warnings and sustained operation under voltage fluctuations. Environmental resilience is heavily emphasized, requiring instruments to withstand extreme temperature variations, constant humidity, vibration, and high-speed airflow without exceeding specified error limits. Additionally, the standard introduces new requirements for wireless communication reliability and functional safety (SIL compliance) for fixed systems used in major hazard installations.

Métodos de ensaio

The standard outlines rigorous testing procedures to verify compliance. Key tests include indication and alarm error tests using standard gases, response time measurements, and long-term stability evaluations. Environmental tests cover temperature extremes, constant damp heat, and vibration/drop tests. Electromagnetic compatibility (EMC) is thoroughly assessed through electrostatic discharge, radiated electromagnetic field, and electrical fast transient tests, referencing the *GB/T 17626* series. Specialized tests for non-contact instruments include steam interference evaluations, while pump-aspirated instruments undergo maximum sampling distance and flow rate verifications.

Perguntas frequentes

What products are regulated under GB 12358-2024?

The standard applies to the production and use of gas detection and alarm instruments for combustible gases, toxic gases, and oxygen in workplace environments. It covers various types of instruments including portable, fixed, pump-aspirated, and diffusion types.

Are there any significant updates in GB 12358-2024 compared to the 2006 version?

The 2024 version is a mandatory revision replacing GB 12358-2006. It introduces 23 new terms and definitions, adds requirements for wireless communication and functional safety, includes new testing for *steam interference* and *surge immunity*, and specifies detailed usage requirements for instrument selection, adjustment, and calibration.

How does GB 12358-2024 differ from international standards like ISO or IEC?

While GB 12358-2024 establishes general technical requirements for workplace gas detection, it references several international-aligned standards for specific testing procedures, such as the *IEC 61326* series for EMC and functional safety. Manufacturers should note that specific Chinese parameters for alarm set points and error limits may differ from general ISO or IEC standards.

The summary above provides a high-level overview of GB 12358-2024. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12358-2024 today to access all detailed parameter tables, testing procedures, and compliance guidelines.

Indicações de aplicabilidade

Tipo: Produto
CCS: C69
ICS: 13.320
Órgão competente: Ministry of Emergency Management
Comitê técnico: National Technical Committee on Work Safety of Standardization Administration of China

Relações

Substitui:GB 12358-2006