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JJG 633-2024 English PDF

Q: How long will the true-PDF of English version of JJG 633-2024 be delivered?

Upon your order, we will start to translate JJG 633-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of JJG 633-2024_English with my colleagues?

Yes. The purchased PDF of JJG 633-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

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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). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

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Q: Should I purchase the latest version JJG 633-2024?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 633-2024 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.

US$399.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 633-2024: Displacement Gas Meters
Status: Valid

JJG 633: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 633-2024	399	Add to Cart	4 days	Displacement Gas Meters	Valid
JJG 633-2005	919	Add to Cart	4 days	Verification Regulation for Gas Displacement Meters	Obsolete
JJG 633-1990	439	Add to Cart	4 days	Verification Regulation of Gas Roots Flowmeter	Obsolete

Basic data

Standard ID: JJG 633-2024 (JJG633-2024)
Description (Translated English): Displacement Gas Meters
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 19,114
Date of Issue: 2024-02-07
Date of Implementation: 2024-08-07
Issuing agency(ies): State Administration for Market Regulation

JJG 633-2024: Displacement Gas 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.
National Metrology Verification Regulations of the People's Republic of China Gas volumetric flow meter Released on 2024-02-07 2024-08-07 Implementation The State Administration for Market Regulation issued Verification procedures for gas volumetric flowmeters Replace JJG 633-2005 Appendix A Contents other than type evaluation Responsible unit. National Flow Measurement Technical Committee Main drafting unit. Zhejiang Institute of Metrology China National Institute of Metrology Beijing Institute of Metrology and Testing Science Participating in the drafting. Shanghai Institute of Metrology and Testing Technology Zhejiang Cangnan Instrument Group Co., Ltd. Tianxin Instrument Group Co., Ltd. Ningbo Donghai Gas Metering Technology Co., Ltd. This regulation is entrusted to the National Flow Measurement Technical Committee for interpretation The main drafters of this regulation are. Zheng Jianying (Zhejiang Institute of Metrology) Li Chunhui (China Institute of Metrology) Yang Youtao (Beijing Institute of Metrology and Testing Science) Participating drafters. Zhang Jinming (Shanghai Institute of Metrology and Testing Technology) Zhang Shengyi (Zhejiang Cangnan Instrument Group Co., Ltd.) Ye Peng (Tianxin Instrument Group Co., Ltd.) Liu Zhaodong (Ningbo Donghai Gas Metering Technology Co., Ltd.)

Introduction (II) 1 Scope(1) 2 References(1) 3 Terminology and units of measurement (1) 3.1 Terminology (1) 3.2 Units of measurement (1) 4 Overview(2) 4.1 Working Principle(2) 4.2 Structural composition (2) 4.3 Purpose(2) 5 Metrological performance requirements (2) 5.1 Accuracy grade and maximum permissible error (2) 5.2 Repeatability (3) 5.3 Cycle stability (3) 6 General technical requirements (3) 6.1 Appearance, logo and seal (3) 6.2 Sealing (4) 7 Measuring instrument control (4) 7.1 Verification conditions (4) 7.2 Verification Items (5) 7.3 Verification methods (5) 7.4 Processing of verification results (8) 7.5 Verification cycle (9) Appendix A Range Method (10) Appendix B Verification Record Reference Format (11) Appendix C Verification Certificate/Verification Result Notice Inner Page Format (Reference Format) (13)

Introduction

This regulation is in accordance with the requirements of JJF1002-2010 "Rules for the Preparation of National Measurement Verification Regulations", combined with the gas The manufacturing level and application status of volumetric flowmeters, and the verification procedures of JJG 633-2005 "Gas Volumetric Flowmeters" Make revisions. Compared with JJG 633-2005, this regulation only involves the content of gas volumetric flowmeter verification, type evaluation The content of the price evaluation part is replaced by a separately formulated type evaluation outline. In addition to the editorial changes, the main technical The technical changes are as follows. --- According to the requirements of JJF1002-2010 "Rules for Writing National Metrology Verification Regulations", the structure of the regulations is determined. Added or updated the contents of "Introduction" and "References, Terms and Units of Measurement"; --- Deleted the content related to the type evaluation outline; --- Considering that wet gas flowmeters are not suitable for use in trade settlement and other mandatory inspection areas, and the state has issued relevant The corresponding calibration specifications have been revised and the corresponding contents of wet gas flow meter verification have been deleted; --- Based on the actual application and technical performance of the product, the "0.2 and 2.5 accuracy levels" were cancelled; --- According to the requirements of legal management, the inspection items of seal and instrument coefficient are added; --- For the flowmeters to be subsequently calibrated, a "periodic stability" calibration item is added to determine whether the flowmeter is stable during the calibration. Whether the metrological performance during the period continues to meet the requirements; --- Increased the requirements for sealing in subsequent verification; --- Improved the uncertainty requirements for flow standard devices, from the original expanded uncertainty (k = 2) to Better than 1/2 of the maximum allowable absolute value of the flow meter error to 1/3; --- For flowmeters of level 1.0 and below, the ambient temperature and humidity control in the calibration environment conditions are relaxed. Requirements; --- Modified the appendix of “Inner page format of verification certificate/notification of verification results”. The previous versions of this regulation are as follows. --- Contents other than type evaluation in Appendix A of JJG 633-2005; ---JJG 633-1990. Verification procedures for gas volumetric flowmeters

1 Scope

This regulation applies to the initial verification, subsequent verification and use of gas volumetric flowmeters (hereinafter referred to as flowmeters) The flow meter includes gas rotary (Roots) flow meter and rotary piston gas flow meter.

2 References

This specification refers to the following documents. JJF1001 General metrological terms and definitions JJF1004 Flow measurement terms and definitions GB/T 13609 Guidelines for Natural Gas Sampling GB/T 13610 Composition analysis of natural gas - Gas chromatography GB/T 17747.1 Calculation of natural gas compressibility factor Part 1.Introduction and guidance GB/T 17747.2 Calculation of natural gas compressibility factor Part 2.Calculation using molar composition GB/T 17747.3 Calculation of natural gas compressibility factor Part 3.Calculation using physical property values GB 17820 Natural Gas GB/T 32201 Gas Flow Meter For any referenced document with a date, only the version with the date is applicable to this Regulation; for any referenced document without a date, The latest version (including all amendments) shall apply to this regulation.

3 Terminology and units of measurement

3.1 Terminology The terms and definitions defined in JJF1001, JJF1004 and the following apply to this regulation. 3.1.1 Transitional flow rate The flow rate value between the maximum flow rate qmax and the minimum flow rate qmin. Note. The boundary flow divides the flow range into two zones, namely the high zone and the low zone. Each zone has its own maximum allowable Error characteristics. The amount of gas passing through the flowmeter corresponding to one rotation of the moving parts in the flowmeter (completing one working cycle) volume. 3.1.3 Instrument coefficient The number of pulses emitted by the flow meter when a unit volume of fluid flows through the flow meter. The flow meter indication error and the corresponding maximum value are The absolute value of the allowable error ratio. 3.2 Units of measurement ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 633-2024_English be delivered?

Answer: Upon your order, we will start to translate JJG 633-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 633-2024_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 633-2024_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+ countries

Question 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 JJG 633-2024?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 633-2024 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.