GB/T 34041.1-2017 English PDF

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GB/T 34041.1-2017: Measurement of fluid flow in closed conduits -- Ultrasonic meters for gas -- Part 1: Meters for custody transfer and allocation measurement
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34041.1-2017	1739	Add to Cart	3 days	Measurement of fluid flow in closed conduits -- Ultrasonic meters for gas -- Part 1: Meters for custody transfer and allocation measurement	Valid

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Basic data

Standard ID: GB/T 34041.1-2017 (GB/T34041.1-2017)
Description (Translated English): Measurement of fluid flow in closed conduits -- Ultrasonic meters for gas -- Part 1: Meters for custody transfer and allocation measurement
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N12
Classification of International Standard: 17.120.10
Word Count Estimation: 87,816
Date of Issue: 2017-09-07
Date of Implementation: 2018-04-01
Quoted Standard: ISO 4006; ISO 5168; ISO/TR 7871; ISO 12213-1; ISO 12213-2; ISO 12213-3; ISO/IEC 17025
Adopted Standard: ISO 17089-1-2010, IDT
Regulation (derived from): National Standard Notice 2017 No. 22
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of acoustic signal transit time to measure the single-tube homogeneous gas flow in the closed pipe gas ultrasonic flowmeter (hereinafter referred to as the flow meter) requirements and recommendations, also provides for the transfer of trade measurement and sub-transmission measurement two A degree of accuracy gas ultrasonic flowmeter structure, flow measurement performance, calibration, output characteristics and other requirements and installation conditions. This section applies to custody transfer measurement and sub-transmission measurement time-of-flight gas ultrasonic flowmeter, including equal diameter, reduced diameter, high pressure, low pressure or any combination of these types of gas ultrasonic flowmeter. This section there is no limit on the maximum or minimum size of the flowmeter. This section can be applied to the measurement of various types of gases, including air, natural gas, ethane and so on.

GB/T 34041.1-2017: Measurement of fluid flow in closed conduits -- Ultrasonic meters for gas -- Part 1: Meters for custody transfer and allocation measurement

---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.
Measurement of fluid flow in closed conduits. Ultras meter for gas. Part 1. Meters for custody transfer and allocation measurement ICS 17.120.10 N12 National Standards of People's Republic of China Measurement of Fluid Flow in Closed Pipes Gas ultrasonic flowmeter Part 1. Custody transfer and transfer measurement Use gas ultrasonic flowmeter Part 1.Metersforcustodytransferandalocationmeasurement (ISO 17089-1.2010, IDT) 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ Introduction IV 1 Scope 1 2 Normative references 1 3 Terms, definitions, symbols and abbreviations 1 3.1 Terms and definitions 1 3.2 Symbols and subscripts 5 3.3 Abbreviations 7 4 measurement principle 7 4.1 Basic Formulas 7 4.2 factors that affect performance 8 4.3 Basic Type Description 9 4.4 Measurement Uncertainty 11 4.5 Flowmeter classification 11 4.6 Reynolds number 12 4.7 temperature and pressure correction 12 5 Flowmeter Features 17 5.1 Working conditions 17 5.2 Body, material and structure 17 5.3 Transducer 19 5.4 Electronic unit 20 5.5 Software 5.6 Replacement Parts 22 5.7 Determination of density 22 5.8 Performance Requirements 23 5.9 Operation and Installation Requirements 27 6 Test and calibration 30 6.1 Pressure Test and Leakage Test 30 6.2 single test - static test 30 6.3 Single Test - Flow Calibration 31 6.4 Type test - to ensure on-site measurement performance 35 7 Verification tracking and actual operation 37 7.1 General 37 7.2 Verification Process 37 7.3 The actual operation 39 7.4 Operation Diagnosis 39 7.5 Verification Tracking During Operation - Mutual Checking and Checking 41 7.6 Re-calibration 42 7.7 Measurement of total uncertainty 43 8 Metering pressure regulating station control valve characteristics and noise 44 8.1 Overview 44 8.2 Calculation Methods 45 Appendix A (Informative) Registration error band 49 Appendix B (informative) error derivation and correction flowmeter 51 Appendix C (informative) flow meter series operation of the flow meter method 54 Appendix D (informative) document information 58 Appendix E (Informative) Geometrical size-related temperature and pressure correction Detailed calculation method Appendix F (informative) Impact and disturbance test items 75 References 78

Foreword

GB/T 34041 "closed pipe fluid flow measurement gas ultrasonic flowmeter" is divided into two parts. --- Part 1. Trade transfer and sub-transmission measurement gas ultrasonic flowmeter; --- Part 2. Industrial measurement of gas ultrasonic flowmeter. This section GB/T 34041 Part 1. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method is equivalent to using ISO 17089-1.2010 "closed pipe fluid flow measuring gas ultrasonic flowmeter Part 1. Transient and custody transfer gas ultrasonic flowmeters. " The documents of our country that are consistent with the corresponding international documents quoted in this part are as follows. --- GB/T 17611-1998 Measurement of fluid flow in closed conduits Terms and symbols (idtISO 4006.1991) --- GB/T 27759-2011 fluid flow measurement uncertainty assessment procedures (ISO 5168.2005, IDT) --- GB /Z 4887-2006 Cumulative Sums and Cumulative Techniques for Quality Control and Data Analysis Guidance (ISO / TR7871.1997, IDT) --- GB/T 17747-2011 (all parts) Calculation of natural gas compression factor [ISO 12213.2006 (all parts]] --- GB/T 27025-2008 General Requirements for Testing and Calibration Laboratory Capabilities (ISO /IEC 17025.2005, IDT) This part of ISO 17089-1.2010 made the following editorial changes. --- Delete the note in the scope of "national regulations or other regulations may be more stringent than the provisions of this section." Considered in international standards To the actual situation in different countries may be some countries laws and regulations may be higher than the standard requirements, this situation does not exist in our country In --- 5.2.3 in the information reference examples "such as ANSI (class300,600,900, etc.), DIN and JIS, etc." to "such as GB/T 9115-2010, GB/T 9119-2010, etc. "; --- Clause 6.4.3 and 6.4.6 are added to ISO 17089-1.2010, the accuracy of the omission clause number; --- Correct the error in the symbols in 8.2.2 and 8.2.5 of ISO 17089-1.2010. This part is proposed by China Machinery Industry Federation. This part of the National Industrial Process Measurement Control and Automation Standardization Technical Committee (SAC/TC124) centralized. This section is drafted unit. Shanghai Institute of Industrial Automation Instruments, Beijing Institute of Metrology, Beijing Ruipu ternary instruments have Co., Ltd., Beijing Chang-Min Technology Co., Ltd., Zhejiang Cangnan Instrument Group Co., Ltd., Tianxin Instrument Group Co., Ltd. Shanghai a promise instrument Limited, Liaoning Sikai Technology Co., Ltd., Tianjin billion Central Automatic Instrument Technology Co., Ltd., Fujian Run Precision Instrument Co., Ltd. Division, Dandong Tongbo Electric (Group) Co., Ltd., Shanghai Nuclear Veritas Instrument Co., Ltd., Beijing Jia Jieneng Technology Co., Ltd., Shanghai Hai Erlst - Emerson Gas Equipment Co., Ltd. The main drafters of this section. Li Minghua, Guo Aihua, Yang You Tao, Li Zhenzhong, Puqi Hwan, Zhang Shengyi, Li Xiao Ping, Jiang Chao, Zhang Wei, Xing Dehui, Ge sword, Xing Lichao, Zhu Qi, Yi Huayong, Wang Yong.

Introduction

Ultrasonic flowmeters (USMs), which measure gas flow rates, have rapidly entered the flowmeter market since.2000, becoming a measure of the volume of custody transfer One of the mainstream flowmeter to measure the output. Ultrasonic flowmeter in addition to high repeatability and high accuracy, but also has the following characteristics. Pressure loss Very small, large range, measurable pulsatile flow. Ultrasonic flowmeters provide extended diagnostic information that not only verifies the performance of the ultrasonic flowmeter but also validates the system Other components in the performance, such as gas chromatographs, pressure transmitters and temperature transmitters. Given the expanded diagnostic capabilities of ultrasonic flowmeters Force, this section advocates the increase and use of automatic diagnosis instead of tedious manual quality inspection. This section focuses on the measurement of the transfer of trade and sub-transmission gas ultrasonic flowmeter (Class 1 and Class 2). Industrial measurement of gas ultrasonic flow Gauge is GB/T 34041.2 part of the theme. Typical performance elements of the classification scheme are as follows. Category Typical Applications Typical Uncertainty References 1 Custody transfer measurement < 0.7% in this section 2 points < 1.5% of the amount of this section 3 utilities and process measurement qV > qV, t.1.5% ~ 5% GB/T 34041.2 4 flare gas and air measurement qV > qV, t.5% ~ 10% GB/T 34041.2 Typical configurations for Type 1 and Type 2 flow meters are multi-channel flow meters for chordal sounding at different radial positions. Typical types 3 and 4 flow meters are mono flow meters, radial flow meters only, plug-in flow meters, domestic flow Gauge, chimney or flue type flowmeter and flare gas flow meter. Measurement of Fluid Flow in Closed Pipes Gas ultrasonic flowmeter Part 1. Custody transfer and transfer measurement Use gas ultrasonic flowmeter

1 Scope

GB/T 34041 provisions of this part of the use of acoustic signal transit time to measure the closed pipe in a single homogeneous gas flow gas Body Ultrasonic Flowmeter (hereinafter referred to as the flow meter) requirements and recommendations, also provides for the transfer of trade measurement and sub-transmission measurement of two accuracy Grade gas ultrasonic flowmeter structure, flow measurement performance, calibration, output characteristics and other requirements and installation conditions. This section applies to the custody transfer measurement and sub-transmission measurement of transit time method gas ultrasonic flowmeter, including equal diameter, reduced diameter, high pressure, low Pressure or any combination of these types of gas ultrasonic flowmeter. This section there is no limit on the maximum or minimum size of the flowmeter. Headquarters Points can be applied to the measurement of various types of gases, including air, natural gas, ethane and so on.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. ISO 4006 closed pipe fluid flow measurement terms and symbols (Measurementoffluidflowinclosedcon- duits-Vocabularyandsymbols) ISO 5168 fluid flow measurement uncertainty assessment procedures (Measurementoffflowflow- Proceduresforthe evaluationofuncertainties ISO /T R7871 Cumulatives and Cumulatives Techniques for Quality Control and Data Analysis (Cumulativesum charts-GuidanceonqualitycontrolandataalysesusingCUSUMtechniques) ISO 12213 (all parts) Calculation of natural gas compression factor [Naturalgas-Calculationofcompression factor (alparts)] ISO /IEC 17025 testing and calibration laboratory capacity requirements (Generalrequirementsforthecompetenceof testingandcalibrationlaboratories) 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions 3.1.1 General ISO 4006 defined and the following terms and definitions apply to this document. 3.1.2 amount 3.1.2.1 Volumeflow volumeflowrate qV ......

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