GB 15631-2008Special type fire detectors (English PDF)

Foreword

The fourth through seventh chapter of this standard is mandatory, the rest are recommended. This standard replaces GB 15631-1995 "point-type infrared flame detector performance requirements and test methods" and GB 15631-1995 phase Comparison of the main changes are as follows:

--- This standard adds aspirating smoke detectors, image-type fire detectors, fire point-type carbon monoxide in the technical requirements Probe request;

--- This standard uses the latest version of the EMC requirements, select the appropriate severity, ease of international standards. This standard Annex A, Annex B normative appendix. The standard proposed by the People's Republic of China Ministry of Public Security. This standard by the National Standardization Technical Committee of the Sixth Fire Technical Committee. This standard is drafted by: Ministry of Public Security Shenyang Fire Research Institute. Participated in the drafting of this standard. Anhui Fire Department, Xi'an Pok Hong Electronics Co., Ltd., Shenzhen given the security system Limited HKUST The legislation security technology limited liability company. The main drafters of this standard. Ding Hongjun, Qu Li, Dou Baodong, Guo Chunlei, Yuanhong Yong, Zhang Ying Cong, Zhang Xuejun, fees plunger. Wang Wenqing, Song Liwei, Mei Zhibin, Li Haitao, Li Ningning, Sun Shuang, Li Rui, Deng Lihong. This standard replaces the standards previously issued as follows:

--- GB 15631-1995. Special Fire Detectors

1 Scope

GB 15631 covers the fire detectors that fall outside the ordinary smoke and heat categories: point-type infrared flame detectors, aspirating smoke detection systems, image-based detectors and carbon monoxide fire detectors. For each it sets the technical requirements and the sensitivity, then a common battery of environmental tests - temperature, humidity, corrosion, vibration, shock and electromagnetic immunity - followed by the inspection rules and marking, with normative annexes on the gas test apparatus and the sensors. It is replaced by GB 12791-2025 from 1 November 2026. Issued on 1 September 2008, in force since 1 May 2009, replacing GB 15631-1995. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the edition it replaces are taken from there. The clause text, the tables and the numeric limits are not reproduced on this page - they are in the document itself, which is delivered in full in English translation.

This standard specifies the special fire detectors (hereinafter referred to as detectors) classification, technical requirements, test methods, inspection rules, signs and so Instruction manual. This standard applies to general industrial and civil buildings to install fire detectors special use. With a special installation for use in other environments Special fire detectors special requirements, except as otherwise provided by the special requirements of the relevant standards, should be the implementation of this standard.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB 4706.1-1998 household and similar electrical appliances - Part 1. General requirements (eqv IEC 335-1.1991)

GB 4715 point-type smoke detectors

GB 9969.1 Instructions General Industrial Products

GB 12978 fire electronic products inspection rules

GB 16838 fire electronic products environment test methods and severities Category 3

3.1 Special fire detector according to the detection principle can be divided into.

a) point infrared flame detector;

b) aspirating smoke detector;

c) image-type fire detectors;

d) Point-type fire detectors carbon monoxide.

3.2 Point-type fire detectors by use of carbon monoxide can be divided into.

3.3 aspirating smoke detector in response to its threshold range can be divided into.

c) sensitive type.

3 Length/d

21 No power Corrosion Test Temperature/°C 25 ±

4 Normal monitoring state

4.1.7.2 Durability Test Detectors should be able to withstand the test under Table 2 under the climate conditions, after the test shall meet the following requirements. When

a) after the tests returned to normal monitoring state, the detector should send out a fire alarm signal or fault signal;

b) After the test, the detector should be able to work properly; the response threshold point infrared flame detector and its response in conformance Test Compared to a threshold, ratio of the maximum response threshold value to the minimum response threshold value should not be greater than 1.3; aspirating smoke detectors and fire point type Carbon monoxide fire detector response threshold value of its response threshold value in the consistency test, compared with the maximum response threshold value Smaller than the response threshold value should not be greater than 1.6; the response threshold image type fire detector should meet the requirements of 4.4.1. Table 2 durability test climate conditions require Name of Test Test Parameters Test Conditions Operating status Constant heat (Durability Test Temperature/°C 40 ±

5 Normal monitoring state

4.2 point infrared flame detector

4.2.1 Response consistency threshold distribution Under normal environmental conditions, measuring the response of each detector threshold than the maximum response threshold value to the minimum response threshold value should be less than 2.0.

4.2.2 Repeatability Under normal ambient conditions, for six consecutive measurements on any one position only the same detector response threshold value, the maximum value to the minimum response threshold Response threshold ratio should not exceed 1.3.

4.2.3 orientation The detector axis and the optical axis angle are 0 °, 15 °, 30 °, 45 °, each measuring response time threshold, cone angle detector should not Less than 45 °, than the maximum response threshold value to the minimum response threshold value should not be greater than 2.0.

4.2.4 energized The detector should be able to run continuously in the normal monitoring state 7d. During the test, the sample should not send out a fire alarm signal or fault signal. After the test, the response threshold of the detector response threshold value in the consistency test, compared to more than the maximum response threshold value to the minimum response threshold It should be less than 1.3.

4.2.5 Power parameter fluctuations Detector supply voltage of -15% and + 10% of rated voltage measured detector response threshold value, and conformance testing of Response compared to a threshold, than the maximum response threshold value to the minimum response threshold value should not be greater than 1.6.

4.2.6 ambient light interference Ambient light detector during the following action should send out a fire alarm signal or fault signal. After ambient light interference, in white Incandescent lamps and fluorescent detectors simultaneously measure the response threshold value under the lighting conditions, the response threshold value in response to the detector in the consistency Test Compared to a threshold, ratio of the maximum response threshold value to the minimum response threshold value should not exceed 1.6. After the test, the sample should be the response threshold ratio Smax.Smin Not more than 1.3.

a) with two 25W incandescent lamp (color temperature of 2850K ± 100K), put out the light 1s 1s, a total of 20 times.

b) with a diameter of 308mm, 30W circular fluorescent lamp, put out the light 1s 1s, a total of 20 times.

c) using the above incandescent and fluorescent lamps, light 2h.

4.2.7 Fire sensitivity In Table 6, the specified test conditions of fire, detectors should send out a fire alarm signal within 30s. Send out a fire alarm signal when the sample With a distance of 25m center fire test when the sensitivity level I, grade II sensitivity at 17m, grade III sensitivity at 12m. Table

6 Fire sensitivity test fire conditions require Name test fire test fire conditions N-heptane fire Fuel heptane (analytical grade), plus 3% (by volume) toluene Quality 650g Arrangement will be placed in the fuel made of 2mm thick steel plate, a bottom size of 33cm × 33cm, height 5cm container Flame or spark ignition Ethanol fire Industrial fuel ethanol (90% ethanol content, containing a small amount of methanol) 2000g Quality Arrangement will be placed in the fuel made of 2mm thick steel plate, a bottom size of 33cm × 33cm, height 5cm container Flame or spark ignition

4.3 aspirating smoke detector

4.3.1 pipeline sampling type aspirated smoke detector main component performance

6 Each discharge point 10 times Discharge Polarity Positive, Negative Interval/s >=

1 Normal monitoring state Table 5 (Continued) Name of Test Test Parameters Test Conditions Operating status Electrical Fast Transient Immunity Test Peak voltage/kV 1 × (1 ± 0.1) Repetition frequency/kHz 5 × (1 ± 0.2) Polarity Positive, Negative Each time 1min Normal monitoring state Surge (impact) Immunity Test Surge voltage/kV line - to 1 × (1 ± 0.1) Polarity Positive, Negative Test times

20 No power

4.1.9 Electromagnetic compatibility tests The detector should be able to withstand the electromagnetic compatibility tests in Table 5 prescribed during the test and after the test shall meet the following requirements.

a) During the test, the detector should send out a fire alarm signal or fault signal;

b) After the test, the detector should be able to work properly; the response threshold point infrared flame detector and its response in conformance Test Compared to a threshold, ratio of the maximum response threshold value to the minimum response threshold value should not be greater than 1.3; aspirating smoke detectors and fire point type Carbon monoxide fire detector response threshold value of its response threshold value in the consistency test, compared with the maximum response threshold value Smaller than the response threshold value should not be greater than 1.6; the response threshold image type fire detector should meet the requirements of 4.4.1. Table

5 Electromagnetic compatibility test conditions require Name of Test Test Parameters Test Conditions Operating status Radio frequency electromagnetic radiation Immunity Test Field/(V/m)

10 Frequency range/MHz 80 ~ 1000 Modulation amplitude 80% (1Hz, sine) Sweep rate/(10oct/s) <=1.5 × 10-

3 Normal monitoring state RF conducted disturbances, induced field Immunity Test Voltage/dBµV 140 Frequency range/MHz 0.15 ~ 100 Modulation amplitude 80% (1Hz, sine) Sweep rate/(10oct/s) <=1.5 × 10-

3 Normal monitoring state Electrostatic discharge Immunity Test Discharge voltage/kV Air discharge (insulator shell sample)