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Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. HJ 1045-2019: Specifications and test procedures for portable monitoring instrument for SO2 and NOX based on ultraviolet absorption method in flue gas emitted from stationary sources Status: Valid
Basic dataStandard ID: HJ 1045-2019 (HJ1045-2019)Description (Translated English): Specifications and test procedures for portable monitoring instrument for SO2 and NOX based on ultraviolet absorption method in flue gas emitted from stationary sources Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: Z25 Classification of International Standard: 13.040.40 Word Count Estimation: 33,310 Date of Issue: 2019 Date of Implementation: 2020-04-24 Issuing agency(ies): Ministry of Ecology and Environment HJ 1045-2019: Specifications and test procedures for portable monitoring instrument for SO2 and NOX based on ultraviolet absorption method in flue gas emitted from stationary sources---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. (Technical requirements and testing methods of portable ultraviolet absorption measuring instruments for stationary pollution source flue gas (sulfur dioxide and nitrogen oxides)) National Environmental Protection Standard of the People's Republic of China Technical requirements and testing methods of portable ultraviolet absorption measuring instruments for stationary pollution source flue gas (sulfur dioxide and nitrogen oxides) Specifications and test procedures for portable monitoring instrument for SO2 and NOX based on ultraviolet absorption method in flue gas emitted from stationary sources 2019-10-24 released 2020-04-24 Implementation Ministry of Ecology and Environment ContentsForeword1 Scope ... 1 2 Normative references ... 1 3 Terms and definitions ... 1 4 Instrument composition and structure ... 2 5 Technical requirements ... 3 6 Performance indicators ... 5 7 Detection methods ... 7 8 Quality Assurance ... 15 9 Test items ... 16 Appendix A (Normative Appendix) Instrument Data Collection Record and Processing Requirements ... 18 Appendix B (Informative) Technical requirements for sample gas pipelines and dehumidification equipment ... 21 Appendix C (informative appendix) On-site inspection method of instrument air tightness ... 22 Appendix D (Informative) Original Record Form for Instrument Laboratory Testing and Field Testing ... 23ForewordIn order to implement the "Environmental Protection Law of the People's Republic of China" and the "Law Monitoring of pollutants emitted from stationary gas pollution sources, standardizing the performance of portable sulfur dioxide and nitrogen oxide ultraviolet absorption measuring instruments, Quality and testing to develop this standard. This standard specifies the composition of portable measuring instruments for sulfur dioxide and nitrogen oxides in a fixed source of pollution. Structure, technical requirements, performance indicators, and instrument testing and evaluation methods. Appendix A to this standard is a normative appendix, and appendixes B to D are informative appendixes. This standard is issued for the first time. This standard is formulated by the Department of Eco-Environmental Monitoring, Laws and Standards Department of the Ministry of Ecology and Environment. This standard was drafted. China National Environmental Monitoring Station, Shandong Provincial Ecological Environment Monitoring Center. This standard was approved by the Ministry of Ecology and Environment on October 24,.2019. This standard will be implemented as of April 24, 2020. This standard is explained by the Ministry of Ecology and Environment. Determination of Flue Gas (Sulfur Dioxide and Nitrogen Oxide) from Stationary Pollution Sources by Portable UV Absorptiometry Measuring instrument technical requirements and detection methods1 ScopeThis standard specifies portable instruments for measuring sulfur dioxide and nitrogen oxides in a fixed source of pollution. (Referred to as instrument) composition structure, technical requirements, performance indicators and instrument detection and evaluation methods. This standard is applicable to the design and production of portable fixed pollution sources for measuring sulfur dioxide, nitrogen oxides and oxygen. And performance testing. Technical requirements for portable monitoring instruments that absorb other gases in the near-ultraviolet region can be implemented with reference to this standard.2 Normative referencesThe content of this standard refers to the clauses in the following documents. For undated references, the valid version is applicable to this standard. GB/T 4208 enclosure protection grade (IP code) GB/T 16157 Determination of particulate matter and sampling of gaseous pollutants in exhaust from stationary pollution sources HJ 75 Technical Specifications for Continuous Monitoring of Flue Gas (SO2, NOX, Particulate Matter) Emissions from Stationary Pollution Sources HJ 76 Technical requirements and detection methods of continuous monitoring system for the emission of flue gas (SO2, NOX, particulate matter) from stationary pollution sources HJ/T 397 Fixed source exhaust gas monitoring technical specifications3 terms and definitionsThe following terms and definitions apply to this standard. 3.1 Full scale span The maximum measurement value set by the instrument according to the actual application needs. 3.2 Response time Instrument response time is divided into rising response time and falling response time. Rise response time refers to the passage of the span calibration gas after the zero reading of the instrument stabilizes. Intervals between the moment when the span calibration gas is 90% of its nominal value. Falling response time refers to the introduction of zero gas after the reading of the measuring range point of the instrument is stable. The interval between the time when the calibration value of the calibration gas is 10% and the middle time interval. 3.3 Zero drift Under the premise that the instrument has not been repaired, maintained or adjusted, the instrument is operated for a specified period of time after passing zero gas. The percentage of the deviation between the meter reading and the initial measurement of the zero gas relative to the full scale. 3.4 Span drift Under the premise that the instrument has not been repaired, maintained or adjusted, the instrument is operated for a specified period of time and a span calibration gas is passed in. Percentage of deviation between the instrument's reading and the initial measurement of the span calibration gas relative to full scale. 3.5 Parallelism Relative standard deviation of the measurement results when the same model and configuration of the same object are measured under the same environmental conditions. 3.6 Reference method Standard method published by the country or industry for comparison with instrument measurements. 3.7 Dry flue gas concentration After the flue gas is pretreated, the concentration of each pollutant in the flue gas when the dew point temperature is ≤4 ° C is also called the dry basis concentration. 3.8 Standard state The state at a temperature of 273.15 K and a pressure of 101.325 kPa. The mass concentration of pollutants in this standard are all standards The dry flue gas concentration in the state. 3.9 Relative accuracy The reference method measures the concentration of gaseous pollutants (containing oxygen) in the flue gas synchronously with the instrument to be measured. The measurement results of the state constitute several data pairs, and the absolute value of the average of the difference between the data pairs and the absolute value of the confidence coefficient, Ratio to the average of the data measured by the reference method.4 Composition and structure of the instrument4.1 Instrument composition The instrument consists of gaseous pollutants SO2 and/or NOX monitoring unit, monitoring parameters of flue gas parameters (oxygen content, etc.) and data Acquisition and processing unit (see Figure 1). When the instrument measurement result is a wet-based concentration, a flue gas humidity monitoring unit should be configured. 4.2 Instrument structure The instrument structure mainly includes a sample acquisition and delivery unit, a sample pretreatment unit, an analysis unit, and data acquisition and processing Unit, etc. Depending on the instrument used to extract cold and dry, extract hot and humid and direct measurement, the instrument consists of all or part of the above Sub-structure composition (see Figure 1). 4.2.1 Sample collection and transfer unit The sample collection and transfer unit mainly includes sampling equipment (sampling tube), sample transfer pipeline, flow control equipment and For the specific technical requirements of sample pumps, etc., see 5.4.1. 4.2.2 Sample pretreatment unit The sample pretreatment unit mainly includes pretreatment equipment such as sample dehumidification equipment. For specific technical requirements, see 5.4.2. 4.2.3 Analysis Unit The analysis unit is used to measure and analyze the collected pollution source flue gas samples. Mainly include gas circuit, circuit, electrical components, Optical components, measuring cells and detectors. 4.2.4 Data acquisition and processing unit The data acquisition and processing unit is used to collect, store, calculate, and process measurement data and status information of instruments and equipment. See 5.4.5 for technical requirements. Figure 1 Schematic diagram of the composition of portable sulfur dioxide and nitrogen oxide ultraviolet absorption measuring instruments5 Technical requirements5.1 appearance requirements 5.1.1 The instrument shall have a product nameplate, which shall be marked with the instrument name, model, production unit, factory number, manufacturing Date and other information. 5.1.2 The surface of the instrument should be intact, without obvious defects, the components and units should be connected reliably, and the operation keys and buttons should be used smoothly. Live and accurate positioning. 5.1.3 The display of the main panel of the instrument is clear, the color is solid, the characters and signs are easy to identify, and there should be no defects that affect the reading. 5.1.4 The instrument case or cover should be corrosion resistant and have good sealing performance. It should meet the requirements of IP55 protection level in GB/T 4208. 5.1.5 The instrument should have good portability and mobility. The total mass of the instrument (including the pretreatment unit) should not exceed 30 kg. Data acquisition and processing unit 5.2 Working conditions The instrument should work normally under the following conditions. 1) Ambient temperature (0 ～ 40) ℃ (applicable ambient temperature of oxygen electrochemical sensor (5 ～ 40) ℃); 2) Relative humidity. ≤85%; 3) Atmospheric pressure. (80 ～ 106) kPa; 4) Power supply voltage. AC (220 ± 22) V, (50 ± 1) Hz. Note. Under special environmental conditions such as low temperature and low pressure, the configuration of instruments and equipment should meet the requirements of local environmental conditions. 5.3 Safety requirements 5.3.1 Insulation resistance When the ambient temperature is (0 ~ 40) ° C and the relative humidity is ≤85%, the insulation of the power terminal of the instrument to the ground or the case is The resistance is not less than 20 MΩ. 5.3.2 Insulation strength When the ambient temperature is (0 ～ 40) ℃ and the relative humidity is ≤85%, the instrument is operated at 1500 V (effective value), 50 Hz The sine wave test voltage lasts for 1 min, and there should be no breakdown or flashover. 5.3.3 The instrument should have a leakage protection device and good grounding measures to prevent damage to the instrument from lightning strikes and static electricity. 5.4 Functional requirements 5.4.1 Requirements for sample collection and transfer units 5.4.1.1 The material of the sampling tube shall be selected from materials that are resistant to high temperature, corrosion and do not react with gaseous pollutants, and shall not affect Normal measurement of the pollutant to be tested. 5.4.1.2 The sampling tube shall have heating and heat insulation functions. The heating temperature is generally above 120 ℃, the temperature is adjustable, and it should be high When the flue gas dew point temperature is above 10 ℃, its actual temperature value should be able to be displayed on the instrument or in the software. For the detection method, see 7.1.4.2. 5.4.1.3 The sampling tube shall have a filtering function for particulate matter. The front or back of the sampling tube should have particles that can be easily replaced or cleaned Filter, the material of the filter material should not react with gaseous pollutants, and the filter should be able to filter at least (5-10) μm Particles above the particle size. 5.4.1.4 The sampling tube shall have sufficient length to reach the point where the sampling section of the chimney or chimney meets the measurement requirements, and the length is generally Not shorter than 1.5 m. 5.4.1.5 The instrument adopting the extraction measurement method, the sample conveying pipeline (before the dehumidification equipment using the cold-dry method or Instrument) should generally have stable and uniform heating and insulation functions. The heating temperature is generally above 120 ℃, and the temperature is adjustable. It should be more than 10 ℃ higher than the flue gas dew point temperature, and its actual temperature value should be able to be displayed on the instrument or in the software; See 7.1.4.2. The sample transfer pipeline should use materials that do not react with gaseous pollutants and should not affect the It is usually measured, and the length is generally not shorter than 1.5 m; its technical indicators shall meet the technical requirements of Table B.1 in Appendix B. 5.4.1.6 The flow control equipment shall ensure that the sampling flow is uniform and stable, and the fluctuation of the sampling flow shall be maintained at the set sampling flow. Within ± 10%. 5.4.1.7 The sampling pump shall have sufficient suction capacity to overcome the negative pressure of the flue or chimney and the resistance of the sampling equipment. When sampling is set When the standby load resistance is 10 kPa, the change of the measurement result of the gaseous pollutants caused by the change in the sampling flow of the suction does not exceed ± 5% For the detection method, see 7.1.4.12. 5.4.2 Requirements for sample pretreatment unit 5.4.2.1 The material of the pretreatment unit shall use materials that do not react with gaseous pollutants and shall not affect the Normal measurement. 5.4.2.2 For dehumidification equipment using extraction cold and dry measurement methods, the technical requirements of Table B.2. In Appendix B shall be met. Dehumidification The setting temperature of the equipment should be set at (0 ～ 4) ℃ (the dew point temperature of the flue gas at the equipment outlet should be ≤4 ℃), and the temperature fluctuation should be within ± 2 ℃ Within, its actual temperature or dew point temperature value should be able to be displayed on the instrument or in the software. 5.4.2.3 If condensate is generated during the dehumidification process of the dehumidification equipment, it shall be collected and discharged through the condensate manually or automatically. The device is discharged in a timely and smooth manner. 5.4.2.4 For instruments equipped with NO2 converters, the NO2 conversion efficiency shall meet the requirements of 6.1.1.10. 5.4.3 Calibration Function Requirements 5.4.3.1 The instrument shall be capable of zero and span calibration. 5.4.3.2 The instrument should be equipped with an easy-to-operate standard gas full-system calibration function, that is, it can complete the sample collection and delivery order from the sample. The whole process calibration of the unit, preprocessing unit and analysis unit. 5.4.4 Air tightness requirements The entire gas path of the instrument should have good airtightness, ensuring all aspects of sample collection, transportation, pretreatment and analysis Connected tightly. The instrument should have the function of checking air tightness on site before use. Instrument air tightness inspection method and operation process See Appendix C. 5.4.5 Data acquisition and processing unit requirements 5.4.5.1 The instrument shall display and record data values that are at least 10% below its zero point and above its full scale. When the measurement results exceed When the temperature is below the zero crossing or 10% above the full scale, the data record can be stored with its minimum or maximum value kept unchanged. Clearly identified in displays and records. 5.4.5.2 The instrument shall have the functions of displaying and setting the instrument time and time label, and the data shall be the average value of the set period. 5.4.5.3 The instrument has Chinese data acquisition, storage, processing and control software. Able to display real-time data, with query history The function of historical data, and can be output in the form of reports or reports. Instrument data acquisition, storage, processing and control software should comply with Appendix A technical requirements. 5.4.5.4 When the instrument is connected to a printer, it shall be able to print the measurement data and other related information during the set time period. 5.4.5.5 The instrument has digital signal output function. 5.4.5.6 After the instrument is powered off, it has the function of automatically saving data.6 Performance indicators6.1 Laboratory testing 6.1.1 Gaseous pollutant (SO2, NOX) monitoring unit 6.1.1.1 Minimum detection limit Minimum detection limit of the instrument. ≤1% full scale. 6.1.1.2 Response time (rise time and fall time) Instrument response time. ≤120 s. 6.1.1.3 Repeatability Instrument repeatability (relative standard deviation). ≤2%. 6.1.1.4 Indication error Instrument display error. no more than ± 2% of full scale. 6.1.1.5 1h zero drift and span drift Instrument 1h zero drift and span drift. no more than ± 2% of full scale. 6.1.1.6 Effects of ambient temperature changes The ambient temperature changes within the range of (0 ~ 40) ° C, and the reading of the instrument changes. no more than ± 5% of full scale. 6.1.1.7 Effect of supply voltage changes The power supply voltage varies by ± 10%, and the change of the instrument reading. does not exceed ± 2% of full scale. 6.1.1.8 Effects of interference components Pass in the interference component gases of the corresponding concentrations in Table 1 in sequence, resulting in positive interference and negative interference that changes in the reading of the analytical instrument. Not more than ± 5% of full scale. Table 1 Interfering component gases used in laboratory testing 6.1.1.9 Parallelism The relative standard deviation of three (sets) instruments measuring the same standard sample reading is ≤5%. 6.1.1.10 Nitrogen dioxide conversion efficiency Efficiency of NO2 to NO conversion in NO2 converter. ≥95%. 6.1.2 Flue gas oxygen content monitoring unit 6.1.2.1 Response time (rise time and fall time) Instrument response time. ≤120 s. 6.1.2.2 Repeatability Instrument repeatability (relative standard deviation). ≤2%. 6.1.2.3 Indication error Instrument display error. no more than ± 2% of full scale. 6.1.2.4 1h zero drift and span drift Instrument 1h zero drift and span drift. no more than ± 2% of full scale. 6.1.2.5 Impact of ambient temperature changes The ambient temperature changes within the range of (5 ~ 40) ° C. The change of the instrument reading. not more than ± 5% of full scale. 6.1.2.6 Impact of supply voltage changes The power supply voltage varies by ± 10%, and the change of the instrument reading. does not exceed ± 2% of full scale. 6.1.2.7 Parallelism The relative standard deviation of three (sets) instruments measuring the same standard sample reading is ≤5%. 6.2 On-site detection of pollutant discharge 6.2.1 Measurement accuracy of gaseous pollutants (SO2, NOX) When the reference method measures the average value of the emission concentration......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 1045-2019_English be delivered?Answer: Upon your order, we will start to translate HJ 1045-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of HJ 1045-2019_English with my colleagues?Answer: Yes. 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