GB/T 36989-2018 English PDF

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GB/T 36989-2018: Measurement of liquid hydrocarbons by ultrasonic flow meters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36989-2018	679	Add to Cart	5 days	Measurement of liquid hydrocarbons by ultrasonic flow meters	Valid

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Basic data

Standard ID: GB/T 36989-2018 (GB/T36989-2018)
Description (Translated English): Measurement of liquid hydrocarbons by ultrasonic flow meters
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E98
Classification of International Standard: 75.180.30
Word Count Estimation: 34,340
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36989-2018: Measurement of liquid hydrocarbons by ultrasonic flow meters

---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 liquid hydrocarbons by ultrasonic flow meters ICS 75.180.30 E98 National Standards of People's Republic of China Measuring the flow of liquid hydrocarbons with an ultrasonic flow meter Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 measuring circuit configuration 2 5 Installation 4 6 Operation and verification 5 7 Operation and settings 6 8 Configuration and verification 7 9 Diagnosis 8 Appendix A (informative appendix) Measuring principle of ultrasonic flowmeter 10 Appendix B (informative) Reynolds number performance curve 12 Appendix C (informative) Ultrasonic flowmeter verification and calculation method 16 Appendix D (informative) Impact of ultrasonic flowmeter pulse lag on the verification process 20 Appendix E (informative appendix) Verification of ultrasonic flowmeter 21 by standard table method Appendix F (informative appendix) Verification of the uncertainty of ultrasonic flowmeters by standard table method 23 Appendix G (informative appendix) Verification of ultrasonic flowmeter calculation method by volume tube 27 Reference 29

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Oil and Gas Standardization Technical Committee (SAC/TC355). This standard was drafted. China National Petroleum Corporation Measurement and Testing Institute, China Petroleum and Chemical Corporation Oilfield, CNOOC Research Institute Engineering Research and Design Institute, PetroChina Urumqi Petrochemical Company, Kaifeng Instrument Co., Ltd. The main drafters of this standard. Gao Jun, Liu Xiaoguang, Zhu Chengyi, Hong Yi, Jiang Jianxin, Sun Ce, He Yuyong, Zhang Jianchang, Zhao Chenghai, An Shumin, Xiong Zhaohong. Measuring the flow of liquid hydrocarbons with an ultrasonic flow meter

1 Scope

This standard specifies the configuration, installation, operation, operation and operation of multi-channel ultrasonic flowmeter (hereinafter referred to as ultrasonic flowmeter) with propagation time difference method. Verification and other requirements, the method of measuring the flow of liquid hydrocarbons by ultrasonic flowmeter, the principle of verification system configuration and verification method, and the measurement are not given. The method of determining the degree of certainty. This standard is applicable to ultrasonic flowmeters in which the ultrasonic transducer is fixedly installed in the fluid pipeline to be tested. This standard can also be used for applications including distribution measurement, ultrasonic flowmeter calibration, and leak detection.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 3836.1 Explosive atmosphere - Part 1. General requirements for equipment Explosive atmospheres - Part 2. Equipment protected by flameproof enclosure "d" Explosive atmospheres - Part 4. Equipment protected by intrinsically safe "i" GB/T 17746 Fidelity and reliability of petroleum liquid and gas dynamic measurement electrical and/or electronic pulse data cable transmission JJG1030-2007 ultrasonic flowmeter

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Ultrasonic flowmeter ultrasonicflowmeter; UFM A flow meter that measures the flow using the propagation characteristics of ultrasonic waves in a fluid. Note 1. The ultrasonic flowmeter consists of a flow meter body, an electronic component and a microprocessor system, an ultrasonic transducer, and the like. Note 2. See Appendix A for the measurement principle of ultrasonic flowmeter. 3.2 Propagation time transittime The time during which the ultrasonic signal travels from the transmitting transducer to the receiving transducer in the liquid. 3.3 Channel acousticpath The actual path of the ultrasonic signal propagating between pairs of ultrasonic transducers. 3.4 Ultrasonic transducer ultrasonictransducer A device that produces an acoustic output under the action of an electrical signal and converts the acoustic signal into an electrical signal. ......

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