Path: Home > GB/T > Page713 > GB/T 35186-2025 || Home > Standard_List > GB/T > Page713 > GB/T 35186-2025 Price & DeliveryUS$919.00 ยท In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 35186-2025: Performance evaluation of measuring system for natural gas
Status: Valid
GB/T 35186: Evolution and historical versions
| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| GB/T 35186-2025 | English | 919 |
Add to Cart
|
7 days [Need to translate]
|
Performance evaluation of measuring system for natural gas
| Valid |
| GB/T 35186-2017 | English | 679 |
Add to Cart
|
6 days [Need to translate]
|
Performance evaluation of measuring system for natural gas
| Valid |
Standard similar to GB/T 35186-2025 GB/T 23258 | GB/T 21447 | GB 50341 | GB/T 46423 | GB/T 21446 | Basic data | Standard ID | GB/T 35186-2025 (GB/T35186-2025) | | Description (Translated English) | Performance evaluation of measuring system for natural gas | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E98 | | Classification of International Standard | 75.180.30 | | Word Count Estimation | 46,492 | | Date of Issue | 2025-10-05 | | Date of Implementation | 2026-05-01 | | Older Standard (superseded by this standard) | GB/T 35186-2017 | | Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China | GB/T 35186-2025: Performance evaluation of measuring system for natural gas---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.
ICS 75.180.30
CCSE98
National Standards of the People's Republic of China
Replaces GB/T 35186-2017
Performance evaluation of natural gas metering system
Published on 2025-10-05
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 2
4.Evaluation Content 2
4.1 Metering System Configuration 2
4.2 Flow rate, temperature and pressure measurement 2
4.3 Determination of physical property parameters 3
4.4 Measurement Management 3
4.5 Uncertainty 4
5.Evaluation 4
5.1 Evaluation Preparation 4
5.2 Evaluation of Metering System Configuration 4
5.3 Evaluation of Flow Rate, Temperature, and Pressure Measurements 4
5.4 Evaluation of physical property parameters 5
5.5 Evaluation of Metrological Management
5.6 Uncertainty Assessment 6
6.Evaluation Results
Appendix A (Informative) Example of a Metrological System Evaluation 7
A.1 Configuration of Measuring Instruments 7
A.2 Measurement Management 7
A.3 Flow meters and temperature and pressure measurements 8
A.4 Physical property parameters 10
A.5 Uncertainty Assessment 12
Appendix B (Informative) Analysis of System Review Validation 14
B.1 Standard Gas Quality Verification 14
B.2 Linearity Check Evaluation 15
Appendix C (Normative) Evaluation of Uncertainty in Measurement Systems 19
C.1 Overview 19
C.2 Uncertainty in volumetric flow rate calculation under standard reference conditions. 19
C.3 Uncertainty in energy calculation under standard reference conditions. 19
C.4 Uncertainty of volumetric flow rate measurement under operating conditions 20
C.5 Mass flow measurement uncertainty 20
C.6 Pressure (differential pressure) measurement uncertainty 20
C.7 Temperature measurement uncertainty 21
C.8 Uncertainty in the calculation of physical property parameters under operating conditions. 22
C.9 Uncertainty of calculation results for physical property parameters under standard reference conditions. 22
C.10 Compositional analysis uncertainty 22
Appendix D (Informative) Example 26 of Uncertainty Assessment
D.1 Measurement parameter uncertainty 26
D.2 Uncertainty of physical property parameters 27
D.3 Flow measurement uncertainty 30
D.4 Standard reference condition energy measurement uncertainty 30
Appendix E (Informative) Example 31 of a Measurement System Performance Evaluation Report
E.1 Performance Evaluation Report of Metering System 31
E.2 Overview 32
E.3 Evaluation Criteria 32
E.4 Evaluation Content 32
E.5 Results and Recommendations 37
References 38
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 35186-2017 "Performance Evaluation of Natural Gas Metering Systems". Compared with GB/T 35186-2017, except for the structure...
Aside from adjustments and editorial changes, the main technical changes are as follows.
a) The requirements for the configuration of measuring instruments for calorific value determination have been added (see 4.1);
b) Evaluation requirements for channel flow meters have been added (see 4.2);
c) The uncertainty and evaluation requirements for determining calorific value using the correlation method have been added (see 4.3.3 and 5.2.2);
d) Added performance evaluation requirements for the sampling system (see 5.4.1);
e) Added standard gas quality verification requirements (see 5.4.2.6);
f) Added requirements for chromatograph linearity testing (see 5.4.2.7);
g) A method for calculating the measurement uncertainty of channel flowmeters has been added, and the compressibility factor under operating conditions is calculated using GB/T 17747.3.
The uncertainty method and the evaluation method for the uncertainty of calorific value assignment have been modified, and equation (C.5) has been changed [see Appendix C, Appendix B of the.2017 edition, and equation].
(B.5)].
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Petroleum and Natural Gas (SAC/TC355).
This document was drafted by. West-East Gas Pipeline Branch of China Pipeline Network Corporation, and China Petroleum Engineering & Construction Corporation.
Southwest Branch of China Petroleum & Chemical Corporation, Daqing Oilfield Design Institute Co., Ltd., Guangdong Dapeng LNG Co., Ltd., China Petroleum & Chemical Corporation
Natural Gas Yuji Pipeline Branch, China Oil & Gas Pipeline Network Corporation, China Pipeline Network Corporation Western Pipeline Co., Ltd., and other companies.
Oil and Gas Metering Center of Southwest Pipeline Co., Ltd. of China National Pipeline Network Corporation, Beijing Pipeline Co., Ltd. of China National Pipeline Network Corporation, and Beijing Bosida New Century
Measurement and Control Technology Co., Ltd.
The main drafters of this document are. Song Chaofan, Wu Yan, Liu Zhe, Xu Gang, Fang Fusheng, Tang Xianming, Lin Min, Li Zhiwen, Zhang Dengfeng, and Cui Shaohua.
Zhang Xuhe, Liu Yiwen, Wang Hailan, Zhou Lei, Wang Duocai, Guo Zhe, Qiu Hui, Zhou Yang, Guo Zhen, Xu Juan, Guo Jing, Huang Guanwen, Li Jia.
This document was first published in.2017, and this is its first revision.
Performance evaluation of natural gas metering system
1 Scope
This document specifies the content, methods, procedures, and results of performance evaluation for natural gas metering systems.
This document applies to natural gas metering systems that conform to GB/T 18603.Other natural gas metering systems may refer to this document for further information.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
document.
GB/T 11062 Calculation Methods for Calorific Value, Density, Relative Density and Wobbe Index of Natural Gas
GB/T 13609 Natural Gas Sampling Guidelines
GB/T 13610 Compositional Analysis of Natural Gas - Gas Chromatography
GB/T 17747 (all parts) Calculation of natural gas compressibility factor
GB/T 18603 Technical Requirements for Natural Gas Metering Systems
GB/T 18604 Measurement of Natural Gas Flow Rate Using Ultrasonic Gas Flow Meters
GB/T 21391 Measurement of Natural Gas Flow Rate Using a Gas Turbine Flow Meter
GB/T 21446 Measurement of Natural Gas Flow Rate Using a Standard Orifice Plate Flow Meter
GB/T 22723 Determination of Energy of Natural Gas
GB/T 27894 (all parts) Determination of composition of natural gas by gas chromatography and calculation of related uncertainties
GB/T 30490 Automatic Sampling Method for Natural Gas
GB/T 30491 (all parts) Calculation of thermodynamic properties of natural gas
GB/T 30500 Gas Ultrasonic Flow Meter In-Service Inspection - Sound Velocity Test Method
GB/T 34166 Measurement of natural gas flow rate using a standard nozzle flow meter
JJF1059.1 Evaluation and Expression of Measurement Uncertainty
JJF1183 Temperature Transmitter Calibration Specification
JJG229 Verification Procedure for Industrial Platinum and Copper Resistance Temperature Detectors
JJG633 Verification Procedure for Gas Positive Displacement Flow Meters
JJG640 Differential Pressure Flow Meter Verification Procedure
JJG700 Gas Chromatograph Verification Procedure
JJG882 Pressure Transmitter
JJG1003 Flow Totalizer Verification Procedure
JJG1030 Ultrasonic Flowmeter Verification Procedure
JJG1037 Verification Procedure for Turbine Flow Meters
JJG1038 Verification Procedure for Coriolis Mass Flow Meters
JJG1055 Online Gas Chromatograph Verification Procedure
JJG1121 Vortex Flow Meter
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 35186-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 35186-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 35186-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 35186-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 35186-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 35186-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |