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HJ 653-2021: Specifications and test procedures for ambient air quality continuous automated monitoring system for PM10 and PM2.5)
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Specifications and test procedures for ambient air quality continuous automated monitoring system for PM10 and PM2.5)
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Specifications and Test Procedures for Ambient Air Quality Continuous Automated Monitoring System for PM10 and PM2 - 5
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Basic data | Standard ID | HJ 653-2021 (HJ653-2021) | | Description (Translated English) | Specifications and test procedures for ambient air quality continuous automated monitoring system for PM10 and PM2.5) | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z15 | | Word Count Estimation | 19,144 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 653-2021: Specifications and test procedures for ambient air quality continuous automated monitoring system for PM10 and PM2.5)
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(Technical requirements and detection methods of continuous automatic monitoring system for ambient air particulate matter (PM10 and PM2.5))
National Ecological Environment Standard of the People's Republic of China
In lieu of HJ 653-2013
Ambient air particulate matter (PM10 and PM2.5) continuous
Technical requirements and detection methods of automatic monitoring systems
Specifications and test procedures for ambient air quality continuous
automated monitoring system for PM10 and PM2.5
This electronic version is the official standard text, which is reviewed and typeset by the Environmental Standards Institute of the Ministry of Ecology and Environment.
Published on 2021-12-30
2022-06-01 Implementation
Released by the Ministry of Ecology and Environment
directory
Foreword...ii
1 Scope...1
2 Normative references...1
3 Terms and Definitions...1
4 System composition...2
5 Technical requirements...3
6 Performance indicators...5
7 Detection method...6
Appendix A (Normative Appendix) Data Recording and Output Requirements for Ambient Air PM10 and PM2.5 Continuous Automatic Monitoring System...14
Continuous automatic monitoring system for ambient air particulate matter (PM10 and PM2.5)
Technical requirements and testing methods
1 Scope of application
This standard specifies the technical requirements, performance indicators and detection methods for continuous automatic monitoring systems for ambient air particulate matter (PM10 and PM2.5).
Law.
This standard applies to the design, production and detection of continuous automatic monitoring systems for ambient air particulate matter (PM10 and PM2.5).
2 Normative references
This standard refers to the following documents or clauses thereof. For dated references, only the dated version applies to this standard.
For undated references, the latest edition (including all amendments) applies to this standard.
HJ 93 Ambient air particulate matter (PM10 and PM2.5) sampler technical requirements and testing methods
HJ 618 Determination of ambient air PM10 and PM2.5 gravimetric method
HJ 656 Technical Specification for Manual Monitoring Method (Gravimetric Method) of Ambient Air Particulate Matter (PM2.5)
"Administrative Measures for the Safety and Protection of Radioisotopes and Radiation Devices" (Order No. 18 [2011] of the former Ministry of Environmental Protection)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
aerodynamic diameter
Unit density (ρ0=1 g/cm
3), when moving at a low Reynolds number in still air, it achieves the same final sink as the actual particle.
Diameter at deceleration.
3.2
Particulate matter (particle size less than or equal to 10 µm) particulate matter (PM10)
Particulate matter in ambient air with an aerodynamic diameter of less than or equal to 10 µm, also known as respirable particulate matter.
3.3
Particulate matter (particle size less than or equal to 2.5 µm) particulate matter (PM2.5)
Particles in ambient air with aerodynamic diameters less than or equal to 2.5 µm, also known as fine particles.
3.4
Cutter particle separate device
A device with the function of separating particles of different particle sizes in the atmosphere.
3.5
50% cut-point diameter (Da50)
The particle aerodynamic diameter corresponding to the particle collection efficiency of the cutter is 50%.
3.6
Geometric standard deviation of sampling efficiency (σg)
The geometric standard deviation of the particle capture efficiency of the cutter has the following two expressions.
a) The particle aerodynamic diameter Da16 corresponding to the collection efficiency of 16% and the particle aerodynamic force corresponding to the collection efficiency of 50%
The ratio of scientific diameter Da50;
b) The corresponding particle aerodynamic diameter Da50 when the capture efficiency is 50% and the corresponding particle aerodynamic force when the capture efficiency is 84%
The ratio of the scientific diameter to Da84.
3.7
standard state
The state when the temperature is 273.15 K and the pressure is 101.325 kPa.
3.8
actual state
The temperature is the actual ambient temperature, and the pressure is the state of the actual ambient atmospheric pressure. The concentration values of particulate matter in the performance test of this standard are all
Concentration value in actual state.
3.9
reference method
Standard methods published by countries or industries.
3.10
parallelism
The root mean square of the relative standard deviation of the measurement data for each batch.
3.11
dynamic heating system
A device that adjusts the heating power of the sampling tube according to the relative humidity value of the sampling airflow and reduces the interference of moisture.
3.12
compensation system for volatile particulates
A device capable of compensating for the loss of volatile components in particulates and reducing moisture interference.
4 System Composition
4.1 System Composition
PM10 and PM2.5 automatic monitoring system includes sample collection unit, sample measurement unit, data processing unit and other auxiliary equipment.
4.2 Sample Collection Unit
The sample collection unit cuts and separates the ambient air particles, and delivers the target particles to the sample measurement unit. This part consists of
Sampling inlet, cutter, sampling tube, etc. The sampling tube shall be equipped with a dynamic heating system or a volatile particulate matter compensation system.
4.3 Sample measurement unit
The sample measurement unit measures the collected ambient air PM10 or PM2.5 samples.
4.4 Data processing unit
The data processing unit displays, collects, processes, stores and transmits data.
4.5 Other auxiliary equipment
Other auxiliary equipment includes cabinets or platforms required to install instrumentation, installation fixtures, sampling pumps, flow calibration adapters,
Air tightness check adapters and other quality control devices, etc.
5 Technical requirements
5.1 Appearance requirements
5.1.1 PM10 and PM2.5 automatic monitoring system should have product nameplate, the nameplate should be marked with instrument name, model, monitoring factor, work
Voltage, production unit, factory number, manufacturing date and other information.
5.1.2 The cutter should have a unique identification, and the label should be marked with the cutter name, model, working point flow, production unit, factory code.
number and other information.
5.1.3 The appearance should be intact, without obvious defects, the connection of various parts should be reliable, and the operation buttons and buttons should be flexible and effective.
5.2 Working conditions
5.2.1 The normal working environment of the cutter
Ambient temperature. -30 ℃～50 ℃; atmospheric pressure. 80 kPa～106 kPa.
5.2.2 Normal working environment conditions of the monitor
Ambient temperature. 15 ℃～35 ℃; Relative humidity. ≤85% RH; Atmospheric pressure. 80 kPa～106 kPa.
5.2.3 Supply voltage for normal operation of the system
AC 220 V ± 22 V, 50 Hz ± 1 Hz.
Note. In special environments such as low temperature and low pressure, the system configuration should meet the use requirements of local environmental conditions.
5.3 Safety requirements
5.3.1 Insulation resistance
Insulation resistance of equipment power terminal to ground or chassis under the condition of ambient temperature of 15 ℃～35 ℃ and relative humidity ≤85% RH
Not less than 20 MΩ.
5.3.2 Dielectric strength
Under the condition that the ambient temperature is 15 ℃～35 ℃ and the relative humidity is ≤85% RH, the device operates at 1500 V (RMS), 50 Hz sine
Under the wave test voltage for 1 min, no breakdown or arcing should occur.
5.3.3 Beta-ray source safety
When the measurement method of the monitor configured in the PM10 and PM2.5 automatic monitoring system is the β-ray absorption method, the β-ray source used shall meet the
Requirements of the "Administrative Measures for the Safety and Protection of Radioisotopes and Radiation Devices".
The previous parameter value and the modified parameter value, the modification record of each parameter shall be saved for not less than 1 year, and the number of times of saving shall not be less than 50 times.
5.4.3 Functional requirements for air tightness inspection
With air tightness inspection function.
5.4.4 Power failure recovery function requirements
After the instrument is powered off, it should be able to automatically save the data; after the power supply is restored, the system should automatically start and return to normal working state.
5.4.5 Filter paper tape (membrane) requirements
Under the normal sampling flow of the instrument, the interception efficiency of the sampling filter paper tape (membrane) for particles with aerodynamic diameter of 0.3 μm is ≥99.7%.
5.4.6 Cutter performance requirements
5.4.6.1 PM10 Cutter Performance
It should meet the requirements of "50% cutting particle size Da50 = 10 μm ± 0.5 μm" and "geometric standard deviation of capture efficiency σg = 1.5 ± 0.1",
See the relevant requirements of HJ 93 for the detection method.
5.4.6.2 PM2.5 Cutter Performance
It should meet the requirements of "50% cutting particle size Da50 = 2.5 μm ± 0.2 μm" and "geometric standard deviation of capture efficiency σg = 1.2 ± 0.1",
See the relevant requirements of HJ 93 for the detection method.
5.4.6.3 PM2.5 Cutter Loading Test
The performance of the cutter shall be subjected to the loading test according to the relevant requirements of HJ 93, and shall meet the requirements of 5.4.6.2.
6 Performance indicators
The measurement range of PM10 and PM2.5 automatic monitoring system should be 0 μg/m
3～1000 μg/m3 or 0 μg/m3～10000 μg/m3 (optional),
The minimum display unit is 0.1 μg/m3, and its performance index should meet the requirements of Table 3.
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