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GB 12791-2025: Point-type flame detectors
GB 12791: Evolution and historical versions
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Point-type flame detectors
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GB 12791-2025
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| GB 12791-2006 | English | 270 |
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Point type ultraviolet flame detectors
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GB 12791-2006
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| GB 12791-1991 | English | 759 |
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Performance requirements and test methods for point ultraviolet flame detectors
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Basic data
| Standard ID | GB 12791-2025 (GB12791-2025) |
| Description (Translated English) | Point-type flame detectors |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | C81 |
| Classification of International Standard | 13.220.20 |
| Word Count Estimation | 38,394 |
| Date of Issue | 2025-10-31 |
| Date of Implementation | 2026-11-01 |
| Older Standard (superseded by this standard) | GB 12791-2006��GB 15631-2008 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB 12791-2025: Point-type flame detectors
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13.220.20
CCSC81
National Standards of the People's Republic of China
Replaces GB 12791-2006, and partially replaces GB 15631-2008.
Point-type flame detector
Published on 2025-10-31
Implemented on 2026-11-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface V
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Classification and Naming 2
5 Requirements 2
5.1 General Requirements 2
5.2 Appearance 2
5.3 Indicator Lights 2
5.4 Auxiliary Equipment Connection 2
5.5 Factory Settings Adjustment 3
5.6 On-site sensitivity adjustment 3
5.7 Control Software 3
5.8 Instruction Manual 4
5.9 Connection Fault Monitoring 4
5.10 Reproducibility 4
5.11 Repeatability 4
5.12 Directional Dependency 4
5.13 Fire Sensitivity Performance 4
5.14 Monitoring of optical surface contamination 4
5.15 Resistance to light interference 4
5.16 Resistance to sunlight interference 5
5.17 Thermal Interference Resistance 5
5.18 Climate and Environmental Tolerance Performance 5
5.19 Mechanical environmental resistance 7
5.20 Electromagnetic compatibility performance 8
5.21 Power Parameter Fluctuation Performance 9
5.22 Enclosure Protection Performance 9
6 Experiments 9
6.1 General Requirements 9
6.2 Visual Inspection 12
6.3 Functional Design Check 12
6.4 Connection Fault Monitoring Test 12
6.5 Reproducibility Test 12
6.6 Repeatability Test 13
6.7 Direction Dependence Test 13
6.8 Fire Sensitivity Test 13
6.9 Optical Surface Contamination Test 13
6.10 Lighting Interference Test 14
6.11 Sunlight Interference Test 15
6.12 Thermal Interference Test 15
6.13 High Temperature (Operation) Test 15
6.14 Low Temperature (Operation) Test 16
6.15 Alternating Damp Heat (Operation) Test 16
6.16 Constant Damp Heat (Durability) Test 17
6.17 Sulfur Dioxide (SO2) Corrosion (Durability) Test 17
6.18 Salt spray test 18
6.19 Impact (Operation) Test 18
6.20 Crash Test 19
6.21 Vibration (Sine) (Running) Test 19
6.22 Vibration (Sine) (Durability) Test 20
6.23 Radio Frequency Electromagnetic Field Radiation Immunity Test 20
6.24 Conducted Interference Immunity Test Based on Radio Frequency Field Induction 20
6.25 Electrostatic Discharge Immunity Test 21
6.26 Electrical Fast Transient/Bulk Immunity Test 21
6.27 Surge (Impact) Immunity Test 21
6.28 Power Parameter Fluctuation Test 22
6.29 Enclosure Protection Rating Test 22
7.Inspection Rule 22
7.1 Factory Inspection 22
7.2 Type Testing 22
8.Mark 23
8.1 General Requirements 23
8.2 Product Marking 23
8.3 Quality Inspection Marks 23
Appendix A (Normative) Response Point Measurement Equipment 24
A.1 Optical bench 24
A.2 Radiation Source 24
A.3 Shutter speed 24
A.4 Modulator 24
A.5 Irradiance meter 24
Appendix B (Normative) Test Ignition - n-Heptane Ignition 26
B.1 Fuel 26
B.2 Arrangement 26
B.3 Ignition Method 26
B.4 Test termination conditions 26
Appendix C (Normative) Test Flame---Methylated Alcohol Flame 27
C.1 Fuel 27
C.2 Arrangement 27
C.3 Ignition Method 27
C.4 Test termination conditions 27
Appendix D (Normative) Simulation of Optical Surface Contamination 28
D.1 Neutral Density Filter 28
D.2 Simulation of Optical Surface Contamination 28
Appendix E (Normative) Lighting Interference Test Equipment 29
E.1 Installation 29
E.2 Arrangement 30
E.3 Light source 30
E.4 Power Supply 30
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document supersedes the standards GB 12791-2006 "Point-type Ultraviolet Flame Detectors" and GB 15631-2008 "Special Fire Detectors".
Regarding the infrared flame detector section, compared with GB 12791-2006, the main technical changes, apart from structural adjustments and editorial modifications, are as follows.
a) Added the terms "infrared flame detector", "ultraviolet flame detector", "corresponding point D value", "sensitivity", and "sensitivity adjustment" and their corresponding terms.
Definition (see Chapter 3);
b) A classification system based on detection principles has been added, including infrared, ultraviolet, and infrared-ultraviolet composite detection methods (see 4.1);
c) Added environmental adaptability classification methods for types A and B (see 4.2);
d) Added sensitivity classification methods of Level 1, Level 2, Level 3, and Level 1S (see 4.3);
e) Added requirements for connection failure monitoring (see 5.9);
f) The direction dependency requirement has been changed (see 5.12, 4.5 of GB 12791-2006 and 5.2.4 of GB 15631-2008);
g) The fire sensitivity performance requirements have been changed (see 5.13, 4.25 of GB 12791-2006 and GB 15631-2008).
5.20.2.1);
h) Added requirements for monitoring optical surface contamination (see 5.14);
i) Increased requirements for resistance to light interference (see 5.15);
j) Increased requirements for resistance to sunlight interference (see 5.16);
k) Increased requirements for thermal interference resistance (see 5.17);
l) The requirements for alternating damp heat (operation) test and salt spray test have been added to the climate environmental tolerance performance requirements (see 5.18);
m) The low-temperature (operational) test requirements in the climate environmental tolerance performance requirements have been changed (see 5.18, 4.10 of GB 12791-2006 and...).
GB 15631-2008, section 5.7);
n) Increased requirements for enclosure protection performance (see 5.22);
o) The requirements for power-on test, ambient light interference test, constant humidity and heat (operation) test, insulation resistance test, and withstand voltage test have been removed (see...).
GB 12791-2006, sections 4.6, 4.8, 4.11, 4.14 and 4.15; GB 15631-2008, sections 5.2.5, 5.2.7 and 5.8).
p) The requirements for insulation resistance test and withstand voltage test have been removed (see 4.14 and 4.15 of GB 12791-2006).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the State Fire and Rescue Administration.
The release history of this document and the document it replaces is as follows.
---First published as GB 12791-1991 in.1991, and revised for the first time in.2006;
---This is the second revision, incorporating the point-type infrared flame detector section of GB 15631-2008 (first published in.1995).
(GB 15631-1995, first revised in.2008).
Point-type flame detector
1 Scope
This document defines the terminology for point flame detectors, specifies their classification and naming, requirements, inspection rules and markings, and describes the corresponding test...
Verification method.
This document applies to the design, manufacture, and application of point flame detectors (hereinafter referred to as "detectors") used in industrial and civil buildings.
test.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 4208-2017 Degrees of protection provided by enclosures (IP code)
GB/T 9969 General Rules for Instructions for Use of Industrial Products
GB 12978 Inspection Rules for Fire Protection Electronic Products
GB/T 16838 Environmental testing methods and severity levels for fire protection electronic products
GB/T 17626.2 Electromagnetic compatibility testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility testing and measurement techniques – Part 3.Radio frequency electromagnetic field radiated immunity testing
GB/T 17626.4 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient/burst immunity test
GB/T 17626.5 Electromagnetic compatibility testing and measurement techniques - Surge (impulse) immunity test
GB/T 17626.6 Electromagnetic compatibility testing and measurement techniques - Conducted disturbance immunity induced by radio frequency fields
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
A detector that generates alarm decision-related responses only to infrared light radiation with wavelengths greater than 850nm.
3.2
A detector that generates alarm decision-related responses only to ultraviolet radiation with wavelengths less than 300nm.
3.3
responsepoint D
The maximum distance at which the detector can emit a reliable fire alarm signal within 30 seconds when exposed to specific flame radiation.
Note. Dmax, Dmin, and D represent the maximum, minimum, and mean values of a set of response points D, respectively. The response point D values are determined according to the method in 6.1.5.
3.4
sensitivity
A measure of a detector's ability to detect fires.
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