GB15322.2-2019
Combustible gas detectors－Part 2：Household combustible gas detectors
可燃气体探测器 第2部分：家用可燃气体探测器
GB 15322.2-2019 is a current mandatory Chinese national standard for Combustible gas detectors－Part 2：Household combustible gas detectors. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Nov 1, 2020.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
GB 15322.2-2019 applies to household combustible gas detectors used in residential environments to monitor combustible gases such as natural gas, liquefied petroleum gas (LPG), and manufactured gas, as well as their incomplete combustion products. This standard is mandatory for all manufacturers producing gas detectors for the Chinese domestic market. It does not apply to industrial or commercial portable or beam-type detectors, which are covered by other parts of the GB 15322 series.
Technical requirements
The standard specifies comprehensive performance and safety requirements for household gas detectors. Detectors must feature clear visual status indicators (normal, fault, alarm) and an audible alarm signal with a specified sound pressure level. Manufacturers must ensure devices have a gas sensor life status indication and a non-volatile historical alarm logging function capable of storing hundreds of events, including power losses and sensor failures. Regarding operational parameters, the standard defines strict alarm action values and response times. For general combustible gases, the alarm set point must be within a specific percentage of the Lower Explosive Limit (LEL), while carbon monoxide detectors have distinct volume fraction thresholds. Detectors must quickly recover to normal monitoring status within 30 seconds after being removed from an alarming environment. The document also outlines stringent electromagnetic compatibility (EMC) and environmental endurance criteria. Devices must withstand electrical fast transients, surges, and electrostatic discharges without triggering false alarms. Furthermore, they must operate reliably under varying climatic conditions (high temperature, low temperature, constant damp heat) and mechanical stresses (vibration, drop), ensuring robust performance in diverse household settings. Additionally, the standard mandates specific anti-interference and anti-poisoning capabilities. Detectors must not issue false alarms when exposed to common household interfering gases like ethanol or acetic acid. They must also endure exposure to low concentrations of hexamethyldisiloxane vapor to prove their resistance to sensor poisoning, ensuring long-term stability and operational safety.
Testing methods
Compliance is verified through a comprehensive suite of tests including basic performance evaluations, alarm action value measurements, and response time testing under controlled gas flow rates. The standard also mandates environmental testing (high/low temperature, damp heat), mechanical testing (vibration, drop), and EMC testing (electrostatic discharge, surge immunity). Furthermore, specialized assessments like anti-poisoning tests using hexamethyldisiloxane and long-term stability tests over 28 days are required to validate sensor durability.
FAQs
What products are regulated under GB 15322.2-2019?
This standard regulates household combustible gas detectors designed to monitor natural gas, liquefied petroleum gas (LPG), manufactured gas, and their incomplete combustion products (such as carbon monoxide). It is specifically applicable to devices used in home environments.
Are there any significant updates from the previous version of GB 15322.2?
The 2019 edition merges the previous versions GB 15322.2-2003 and GB 15322.5-2003 into a single standard. It introduces new requirements for detector functionality, preheat alarm capabilities, explosion-proof performance, anti-poisoning performance, and low-concentration operation. It also adds specific EMC tests like surge immunity and conducted disturbance immunity.
How does GB 15322.2-2019 differ from GB 15322.1 for industrial detectors?
While both fall under the GB 15322 series, this Part 2 focuses exclusively on household applications, whereas Part 1 addresses industrial and commercial point-type detectors. Household detectors must include specific features like sensor life indication and historical alarm logging tailored for residential safety.
The summary above provides a high-level overview of GB 15322.2-2019. 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 15322.2-2019 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C81
- ICS
- 13.220.20
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China