JJF 1907-2021 English PDFUS$399.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. JJF 1907-2021: (Calibration Specification for On-line Monitoring of Ambient Air Gas Analyzer) Status: Valid
Basic dataStandard ID: JJF 1907-2021 (JJF1907-2021)Description (Translated English): (Calibration Specification for On-line Monitoring of Ambient Air Gas Analyzer) Sector / Industry: Metrology & Measurement Industry Standard Classification of Chinese Standard: A61 Word Count Estimation: 20,274 Issuing agency(ies): State Administration for Market Regulation JJF 1907-2021: (Calibration Specification for On-line Monitoring of Ambient Air Gas Analyzer)---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.(Calibration Specification for On-line Monitoring of Ambient Air Gas Analyzer) National Metrology Technical Specification of the People's Republic of China Specification for calibration of gas analyzers for on-line monitoring of ambient air Published on 2021-07-28 2022-01-28 Implementation Released by the State Administration for Market Regulation Ambient air online monitoring gas Analyzer Calibration Specifications Focal Point. National Technical Committee of Environmental Chemical Metrology Main drafting unit. China Institute of Metrology Participating in the drafting unit. Beijing Environmental Protection Monitoring Center Shanghai Environmental Protection Product Quality Supervision and Inspection Station Qingdao Zhongrui Intelligent Instrument Co., Ltd. Guangzhou Analysis and Testing Center, China Beijing Zhitiandi Environmental Technology Co., Ltd. Beijing Kangerxing Technology Development Co., Ltd. This specification is entrusted to the National Environmental Chemical Metrology Technical Committee to be responsible for the interpretation The main drafters of this specification. Zhou Zeyi (China Institute of Metrology) Participating drafters. Jing Kuan (Beijing Environmental Protection Monitoring Center) Ding Zhenmin (Shanghai Environmental Protection Product Quality Supervision and Inspection Station) He Chunlei (Qingdao Zhongrui Intelligent Instrument Co., Ltd.) Luo Jun (Analysis and Testing Center, Guangzhou, China) Ma Chao (Beijing Zhitiandi Environmental Technology Co., Ltd.) Sun Jinghua (Beijing Kangerxing Technology Development Co., Ltd.) contentIntroduction (Ⅱ) 1 Scope(1) 2 Overview(1) 3 Metrology Characteristics(1) 4 Calibration Conditions(2) 4.1 Environmental conditions (2) 4.2 Measurement standards and supporting equipment (2) 5 Calibration items and calibration methods (2) 5.1 Instrument Linearity(2) 5.2 Indication error(3) 5.3 Repeatability(3) 5.4 Response time(4) 6 Expression of calibration results (4) 7 Recalibration interval(4) Appendix A Calibration Raw Record(5) Appendix B Calibration Certificate (Inner Page) Format (8) Appendix C Working principle and data processing of dynamic gas distribution online calibration device (9) Appendix D Example of Uncertainty Evaluation of Indication Error of Ambient Air Online Monitoring Gas Analyzer(13)IntroductionJJF 1071 "Rules for Compilation of National Metrology Calibration Specifications", JJF 1001 "General Metrology Terms and Definitions", JJF 1059.1 "Assessment and Representation of Measurement Uncertainty" together constitute the basic series of regulations supporting the formulation of this specification. Fan. The technical indicators of the instrument linear parameters in this specification refer to HJ818 "Ambient Air Gaseous Pollutants (SO2, NO2, O3, CO) Continuous Automatic Monitoring System Operation and Quality Control Technical Specifications, HJ193 "Ambient Air Gaseous Pollution" "Technical Specifications for Installation and Acceptance of Continuous Automatic Monitoring System for Substances (SO2, NO2, O3, CO)"; working condition measurement range reference HJ654 "Ambient air gaseous pollutants (SO2, NO2, O3, CO) continuous automatic monitoring system technical requirements and testing methods” and other standards. This specification is published for the first time. Specification for calibration of gas analyzers for on-line monitoring of ambient air1 ScopeThis specification applies to the measurement of nitrogen dioxide, sulfur dioxide, ozone, and carbon monoxide in ambient air. Analyzer calibration. The measurement range of SO2, NO2, O3 analyzer in this specification. (0~0.5) μmol/mol; CO analyzer Working condition measurement range. (0~10)μmol/mol.2 OverviewThe detection principles of the ambient air online monitoring gas analyzer (hereinafter referred to as the instrument) mainly include chemiluminescence, ultraviolet Spectral analysis methods such as fluorescence method, ultraviolet absorption method, non-dispersive infrared absorption method and gas filter correlation infrared absorption method. Law. The sampling method is inhalation. The instrument is mainly composed of sampling unit, detection unit, signal processing unit, display unit, etc. The ambient air is sampled by the sampling unit and then enters the detection unit, and the measured components in the sample pass through the optical sensing module. The signal processing unit converts it into an electrical signal, and then converts it into a digital signal through an electronic circuit, and the display unit outputs SO2, NO2, O3, CO concentration. The schematic diagram of the instrument structure is shown in Figure 1. Figure 1 Schematic diagram of the structure3 Metrology characteristicsThe measurement performance is shown in Table 1. Table 1 Metrology performance Calibration item Metrology performance Nitrogen dioxide gas analyzer Sulfur dioxide gas analyzer Ozone gas analyzer Carbon monoxide gas analyzer Instrument linearity Correlation coefficient (r). >0.995 0.90≤slope(a)≤1.10 Intercept (b) within ±1% of measurement range Indication error ±10% Repeatability2% 2% 2% 2% Response time 180s 120s 180s 120s Note. The above indicators are not used for eligibility determination and are for reference only. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJF 1907-2021_English be delivered?Answer: Upon your order, we will start to translate JJF 1907-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. 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