Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this part are compulsory.
GB 15322 consists of the following parts under the general title Combustible gas detectors:
——Part 1: Point-type combustible gas detectors for industrial and commercial use;
——Part 2: Household combustible gas detectors;
——Part 3: Portable combustible gas detectors for industrial and commercial use;
——Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use.
This is Part 1 of GB 15322.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 15322.1-2003 Combustible gas detectors - Part 1: Point type detectors for 0~100% LEL combustible gas and GB 15322.4-2003 Combustible gas detectors - Part 4: Point type detectors for combustible man-made gas. The following main technical changes have been made with respect to GB 15322.1-2003 and GB 15322.4-2003:
——The contents of GB 15322.1-2003 and GB 15322.4-2003 are merged into one part;
——According to the measurement range, the detectors are classified into three types: detectors with a measurement range between 3%LEL and 100%LEL, detectors with a measurement range below 3%LEL, and detectors with a measurement range above 100%LEL. According to the working mode, the detectors are classified into two types: system type detectors and alarm type detectors. According to the sampling method, the detectors are classified into three types: diffusion detectors, aspiration detectors and optical fiber sensing detectors (see Clause 3; Clause 4 of GB 15322.1-2003 and that of GB 15322.4-2003).
——The requirements for alarm operation values of detectors under various test conditions are revised (see Clause 4; Clause 5 of GB 15322.1-2003 and that of GB 15322.4-2003).
——The sampling airflow variation test is added for aspiration detectors (see 4.3.8).
——The line transmission performance test and detector interchangeability test are added for system type detectors (see 4.3.9 and 4.3.10).
——The surge immunity test and immunity test for conducted disturbance induced by radio-frequency field are added to the electromagnetic compatibility test items (see 4.3.14).
——The poison resistance test is added (see 4.3.18).
——The low concentration operation test is added (see 4.3.20).
This part was proposed by and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.
The previous editions of this parts are as follows:
——GB 15322-1994;
——GB 15322.1-2003;
——GB 15322.4-2003.
Combustible gas detectors - Part 1: Point-type combustible gas detectors for industrial and commercial use
1 Scope
This part of GB 15322 specifies the classification, requirements, tests, test rules and markings of point-type combustible gas detectors for industrial and commercial use.
This part is applicable to point-type combustible gas detectors (hereinafter referred to as "detectors") which are installed and used in industrial and commercial places to detect hydrocarbons, ethers, esters, alcohols, carbon monoxide, hydrogen and other combustible gases and vapors. This part is also applicable to detectors with special performance used in industrial and commercial places, except that special requirements shall be required separately by relevant standards.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 3836.1-2010 Explosive atmospheres - Part 1: Equipment - General requirements
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB 12978 Rules for test of fire electronic products
GB/T 16838 Environmental test methods and severities for fire electronic products
GB/T 17626.2-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test
GB/T 17626.5-2008 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test
GB/T 17626.6-2017 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields
3 Classification
3.1 By measurement range:
a) Detectors with a measurement range between 3%LEL and 100%LEL;
b) Detectors with a measurement range below 3%LEL (including detectors detecting carbon monoxide);
c) Detectors with a measurement range above 100%LEL.
Note: The lower explosion limit (LEL) is the lowest explosion concentration of combustible gas or vapor in air.
3.2 By working mode:
a) System type detectors;
b) Alarm type detectors.
3.3 By sampling method:
a) Diffusion detectors;
b) Aspiration detectors;
c) Optical fiber sensing detectors.
3.4 By the service environment:
a) Indoor detectors;
b) Outdoor detectors.
4 Requirements
4.1 General
The detectors shall meet the relevant requirements of Clause 4, and shall be tested in accordance with Clause 5 to confirm whether the detectors meet the requirements of Clause 4.
4.2 Appearance requirements
4.2.1 The detectors shall be provided with the complete package when they are delivered, and the package shall contain the quality certificate and the instructions for use.
4.2.2 The detectors shall be free from corrosion, coating peeling, blistering, obvious mechanical damage such as scratches, cracks, burrs, etc., on their surfaces, and free from looseness in fastening parts.
4.3 Performance
4.3.1 General requirements
4.3.1.1 The operation under energized conditions such as zeroing, calibrating and changing parameters of the detector shall not change the integrity of its housing.
4.3.1.2 The system type detectors shall be powered by DC voltage of 36V and below, and the alarm type detectors shall be powered by AC voltage of 220V. The detectors powered by DC voltage shall be protected against polarity reverse connection.
4.3.1.3 The diffusion detectors and the aspiration detectors shall have independent indicating lights to indicate their normal monitoring, fault and alarm operating state respectively. If the field detection components of the optical fiber sensing detector do not have independent operating state indicating lights, the control and indication equipment connected with them shall have independent indicating lights to indicate their operating state, where the green indicates normal monitoring state, the yellow indicates fault state and the red indicates alarm state respectively. The lower limit and higher limit alarm state indications shall be clearly distinguished. The indicating lights shall have their functions noted in Chinese. Under 5lx~500lx illumination and at 5m in front of the detector, the indicator light shall be clearly visible.
Note: Normal monitoring state refers to that the detector operates normally in an energized state, without alarm signal or fault signal.
4.3.1.4 When the concentration of combustible gas in the monitored area reaches the alarm set point, the detector shall be able to send out an alarm signal. Then the detector is put in a normal environment, and it shall be able to automatically (or manually) return to the normal monitoring state within 30s.
4.3.1.5 The alarm type detectors shall have an alarm output interface. The type and capacity of the alarm output interface shall match with those of the adapting products or executive components specified by the manufacturer, and shall be indicated in the instructions for use. If the alarm output interface of the detector has a delay function, the maximum delay time shall not exceed 30s.
4.3.1.6 The system type detectors shall be able to output signals corresponding to their concentration measured and the operating state. Information such as signal types and parameters shall be indicated in the instructions for use.
4.3.1.7 The alarm type detectors have a concentration display function. Under 5lx~500lx illumination and at 1m in front of the detector, the displayed information shall be clearly visible.
4.3.1.8 The range and alarm set point of detectors are specified as follows:
a) For detectors with a measurement range between 3%LEL~100%LEL, the upper range limit shall be 100%LEL, the lower limit alarm set point shall be in the range of 5%LEL~25%LEL, and if there is a high limit alarm set point, it shall be 50%LEL. If the lower limit alarm set point is adjustable, it shall be adjustable in the range of 5%LEL~25%LEL.
b) For detectors detecting carbon monoxide, the lower limit alarm set point shall be in the range of 150×10-6 (volume fraction)~300×10-6 (volume fraction), and if there is a high limit alarm set point, it shall be 500×10-6 (volume fraction). If the low limit alarm set point is adjustable, it shall be adjustable in the range of 150×10-6 (volume fraction)~300×10-6 (volume fraction).
c) For detectors with a measurement range below 3%LEL and those with a measurement range above 100%LEL, their range and alarm set point shall be specified by the manufacturer.
d) Parameters such as range and alarm set point shall be indicated in the instructions for use of the detector.
4.3.1.9 When a detector uses a plug-in gas sensor, it shall be protected against structural detachment. When the gas sensor is detached, the detector shall be able to send out a fault signal within 30s.
4.3.1.10 When the sampling pipeline of an aspiration detector is blocked or broken, the detector shall be able to send out a fault signal and indicate the fault type.
4.3.1.11 The detectors shall be of explosion-proof type meeting the requirements of GB 3836.1-2010.
4.3.1.12 The model preparation of detectors shall be in accordance with those specified in Annex A.
4.3.1.13 The instructions for use of detectors shall meet the relevant requirements of GB/T 9969, indicating the service life of the gas sensor.
Foreword III
1 Scope
2 Normative references
3 Classification
4 Requirements
4.1 General
4.2 Appearance requirements
4.3 Performance
4.4 Response performance for detecting gases other than methane, propane and carbon monoxide
5 Tests
5.1 Test outline
5.2 Basic performance test
5.3 Alarm operation value test
5.4 Range indication deviation test
5.5 Response time test
5.6 Orientation test
5.7 Alarm repeatability test
5.8 High speed airflow test
5.9 Sampling airflow variation test (only applicable to aspirated specimens)
5.10 Line transmission performance test (only applicable to systematic specimens)
5.11 Detector interchangeability test (only applicable to systematic specimens)
5.12 Voltage fluctuation test
5.13 Insulation resistance test
5.14 Electrical strength test
5.15 Electrostatic discharge immunity test
5.16 Radiated, radio-frequency electromagnetic field immunity test
5.17 Electrical fast transient/burst immunity test
5.18 Surge (impact) immunity test
5.19 Immunity test for conducted disturbance induced by radio-frequency field
5.20 High temperature (operation) test
5.21 Low temperature (operation) test
5.22 Steady-state damp-heat (operation) test
5.23 Vibration (sinusoidal) (operation) test
5.24 Vibration (sinusoidal) (durability) test
5.25 Drop test
5.26 Gas interference resistance test (not applicable to the specimens with a measurement range below 3%LEL)
5.27 Poison resistance test
5.28 High-concentration gas impact resistance test
5.29 Low concentration operation test
5.30 Long-term stability test
6 Inspection rules
6.1 End-of-manufacturing inspection
6.2 Type inspection
7 Marking
7.1 General
7.2 Product marking
7.3 Quality inspection marking
Annex A (Normative) Product model preparation of detectors
Annex B (Normative) Test equipment for combustible gas detectors
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this part are compulsory.
GB 15322 consists of the following parts under the general title Combustible gas detectors:
——Part 1: Point-type combustible gas detectors for industrial and commercial use;
——Part 2: Household combustible gas detectors;
——Part 3: Portable combustible gas detectors for industrial and commercial use;
——Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use.
This is Part 1 of GB 15322.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 15322.1-2003 Combustible gas detectors - Part 1: Point type detectors for 0~100% LEL combustible gas and GB 15322.4-2003 Combustible gas detectors - Part 4: Point type detectors for combustible man-made gas. The following main technical changes have been made with respect to GB 15322.1-2003 and GB 15322.4-2003:
——The contents of GB 15322.1-2003 and GB 15322.4-2003 are merged into one part;
——According to the measurement range, the detectors are classified into three types: detectors with a measurement range between 3%LEL and 100%LEL, detectors with a measurement range below 3%LEL, and detectors with a measurement range above 100%LEL. According to the working mode, the detectors are classified into two types: system type detectors and alarm type detectors. According to the sampling method, the detectors are classified into three types: diffusion detectors, aspiration detectors and optical fiber sensing detectors (see Clause 3; Clause 4 of GB 15322.1-2003 and that of GB 15322.4-2003).
——The requirements for alarm operation values of detectors under various test conditions are revised (see Clause 4; Clause 5 of GB 15322.1-2003 and that of GB 15322.4-2003).
——The sampling airflow variation test is added for aspiration detectors (see 4.3.8).
——The line transmission performance test and detector interchangeability test are added for system type detectors (see 4.3.9 and 4.3.10).
——The surge immunity test and immunity test for conducted disturbance induced by radio-frequency field are added to the electromagnetic compatibility test items (see 4.3.14).
——The poison resistance test is added (see 4.3.18).
——The low concentration operation test is added (see 4.3.20).
This part was proposed by and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.
The previous editions of this parts are as follows:
——GB 15322-1994;
——GB 15322.1-2003;
——GB 15322.4-2003.
Combustible gas detectors - Part 1: Point-type combustible gas detectors for industrial and commercial use
1 Scope
This part of GB 15322 specifies the classification, requirements, tests, test rules and markings of point-type combustible gas detectors for industrial and commercial use.
This part is applicable to point-type combustible gas detectors (hereinafter referred to as "detectors") which are installed and used in industrial and commercial places to detect hydrocarbons, ethers, esters, alcohols, carbon monoxide, hydrogen and other combustible gases and vapors. This part is also applicable to detectors with special performance used in industrial and commercial places, except that special requirements shall be required separately by relevant standards.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 3836.1-2010 Explosive atmospheres - Part 1: Equipment - General requirements
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB 12978 Rules for test of fire electronic products
GB/T 16838 Environmental test methods and severities for fire electronic products
GB/T 17626.2-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test
GB/T 17626.5-2008 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test
GB/T 17626.6-2017 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields
3 Classification
3.1 By measurement range:
a) Detectors with a measurement range between 3%LEL and 100%LEL;
b) Detectors with a measurement range below 3%LEL (including detectors detecting carbon monoxide);
c) Detectors with a measurement range above 100%LEL.
Note: The lower explosion limit (LEL) is the lowest explosion concentration of combustible gas or vapor in air.
3.2 By working mode:
a) System type detectors;
b) Alarm type detectors.
3.3 By sampling method:
a) Diffusion detectors;
b) Aspiration detectors;
c) Optical fiber sensing detectors.
3.4 By the service environment:
a) Indoor detectors;
b) Outdoor detectors.
4 Requirements
4.1 General
The detectors shall meet the relevant requirements of Clause 4, and shall be tested in accordance with Clause 5 to confirm whether the detectors meet the requirements of Clause 4.
4.2 Appearance requirements
4.2.1 The detectors shall be provided with the complete package when they are delivered, and the package shall contain the quality certificate and the instructions for use.
4.2.2 The detectors shall be free from corrosion, coating peeling, blistering, obvious mechanical damage such as scratches, cracks, burrs, etc., on their surfaces, and free from looseness in fastening parts.
4.3 Performance
4.3.1 General requirements
4.3.1.1 The operation under energized conditions such as zeroing, calibrating and changing parameters of the detector shall not change the integrity of its housing.
4.3.1.2 The system type detectors shall be powered by DC voltage of 36V and below, and the alarm type detectors shall be powered by AC voltage of 220V. The detectors powered by DC voltage shall be protected against polarity reverse connection.
4.3.1.3 The diffusion detectors and the aspiration detectors shall have independent indicating lights to indicate their normal monitoring, fault and alarm operating state respectively. If the field detection components of the optical fiber sensing detector do not have independent operating state indicating lights, the control and indication equipment connected with them shall have independent indicating lights to indicate their operating state, where the green indicates normal monitoring state, the yellow indicates fault state and the red indicates alarm state respectively. The lower limit and higher limit alarm state indications shall be clearly distinguished. The indicating lights shall have their functions noted in Chinese. Under 5lx~500lx illumination and at 5m in front of the detector, the indicator light shall be clearly visible.
Note: Normal monitoring state refers to that the detector operates normally in an energized state, without alarm signal or fault signal.
4.3.1.4 When the concentration of combustible gas in the monitored area reaches the alarm set point, the detector shall be able to send out an alarm signal. Then the detector is put in a normal environment, and it shall be able to automatically (or manually) return to the normal monitoring state within 30s.
4.3.1.5 The alarm type detectors shall have an alarm output interface. The type and capacity of the alarm output interface shall match with those of the adapting products or executive components specified by the manufacturer, and shall be indicated in the instructions for use. If the alarm output interface of the detector has a delay function, the maximum delay time shall not exceed 30s.
4.3.1.6 The system type detectors shall be able to output signals corresponding to their concentration measured and the operating state. Information such as signal types and parameters shall be indicated in the instructions for use.
4.3.1.7 The alarm type detectors have a concentration display function. Under 5lx~500lx illumination and at 1m in front of the detector, the displayed information shall be clearly visible.
4.3.1.8 The range and alarm set point of detectors are specified as follows:
a) For detectors with a measurement range between 3%LEL~100%LEL, the upper range limit shall be 100%LEL, the lower limit alarm set point shall be in the range of 5%LEL~25%LEL, and if there is a high limit alarm set point, it shall be 50%LEL. If the lower limit alarm set point is adjustable, it shall be adjustable in the range of 5%LEL~25%LEL.
b) For detectors detecting carbon monoxide, the lower limit alarm set point shall be in the range of 150×10-6 (volume fraction)~300×10-6 (volume fraction), and if there is a high limit alarm set point, it shall be 500×10-6 (volume fraction). If the low limit alarm set point is adjustable, it shall be adjustable in the range of 150×10-6 (volume fraction)~300×10-6 (volume fraction).
c) For detectors with a measurement range below 3%LEL and those with a measurement range above 100%LEL, their range and alarm set point shall be specified by the manufacturer.
d) Parameters such as range and alarm set point shall be indicated in the instructions for use of the detector.
4.3.1.9 When a detector uses a plug-in gas sensor, it shall be protected against structural detachment. When the gas sensor is detached, the detector shall be able to send out a fault signal within 30s.
4.3.1.10 When the sampling pipeline of an aspiration detector is blocked or broken, the detector shall be able to send out a fault signal and indicate the fault type.
4.3.1.11 The detectors shall be of explosion-proof type meeting the requirements of GB 3836.1-2010.
4.3.1.12 The model preparation of detectors shall be in accordance with those specified in Annex A.
4.3.1.13 The instructions for use of detectors shall meet the relevant requirements of GB/T 9969, indicating the service life of the gas sensor.
Contents of GB 15322.1-2019
Foreword III
1 Scope
2 Normative references
3 Classification
4 Requirements
4.1 General
4.2 Appearance requirements
4.3 Performance
4.4 Response performance for detecting gases other than methane, propane and carbon monoxide
5 Tests
5.1 Test outline
5.2 Basic performance test
5.3 Alarm operation value test
5.4 Range indication deviation test
5.5 Response time test
5.6 Orientation test
5.7 Alarm repeatability test
5.8 High speed airflow test
5.9 Sampling airflow variation test (only applicable to aspirated specimens)
5.10 Line transmission performance test (only applicable to systematic specimens)
5.11 Detector interchangeability test (only applicable to systematic specimens)
5.12 Voltage fluctuation test
5.13 Insulation resistance test
5.14 Electrical strength test
5.15 Electrostatic discharge immunity test
5.16 Radiated, radio-frequency electromagnetic field immunity test
5.17 Electrical fast transient/burst immunity test
5.18 Surge (impact) immunity test
5.19 Immunity test for conducted disturbance induced by radio-frequency field
5.20 High temperature (operation) test
5.21 Low temperature (operation) test
5.22 Steady-state damp-heat (operation) test
5.23 Vibration (sinusoidal) (operation) test
5.24 Vibration (sinusoidal) (durability) test
5.25 Drop test
5.26 Gas interference resistance test (not applicable to the specimens with a measurement range below 3%LEL)
5.27 Poison resistance test
5.28 High-concentration gas impact resistance test
5.29 Low concentration operation test
5.30 Long-term stability test
6 Inspection rules
6.1 End-of-manufacturing inspection
6.2 Type inspection
7 Marking
7.1 General
7.2 Product marking
7.3 Quality inspection marking
Annex A (Normative) Product model preparation of detectors
Annex B (Normative) Test equipment for combustible gas detectors
