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GB/T 31253-2014 English PDF

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US$399.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31253-2014: Natural gas -- Validation for gaseous reference materials -- Direct measurement of calorific value and density
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31253-2014	399	Add to Cart	3 days	Natural gas -- Validation for gaseous reference materials -- Direct measurement of calorific value and density	Valid

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Basic data

Standard ID: GB/T 31253-2014 (GB/T31253-2014)
Description (Translated English): Natural gas -- Validation for gaseous reference materials -- Direct measurement of calorific value and density
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E24
Classification of International Standard: 75.060
Word Count Estimation: 17,127
Date of Issue: 12/5/2014
Date of Implementation: 5/1/2015
Quoted Standard: GB/T 11062; GB/T 12206; GB/T 19205; JJF 1033-2008; JJF 1059.1
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 a method of natural gas by the gas analysis using standard materials heat and direct measurement of density verification. This standard applies to verify gas standard material prepared by weighing.

GB/T 31253-2014: Natural gas -- Validation for gaseous reference materials -- Direct measurement of calorific value and density

---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.
Natural gas - Validation for gaseous reference materials - Direct measurement of calorific value and density ICS 75.060 E24 National Standards of People's Republic of China Verify natural gas standard material Direct heat and density measurement Issued on. 2014-12-05 2015-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 gas standard material verification method 2 Use calorimeter measuring natural gas calorific reference material method in Annex A (informative) 4 Methods Appendix B (informative) Measurement Standards calorific natural gas in accordance with GB/T 12206 8 Annex C (informative) using standard gas density balance measuring the density of matter Method 10 Methods Appendix D (informative) using GB/T 11062 standard material indirect measurement of natural gas calorific value and density of 11 Annex E (informative) using methods to verify calorific gas standard substance in Example 12

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China National Petroleum Corporation. This standard by the National Standardization Technical Committee on Gas (SAC/TC244) centralized. This standard was drafted. Chinese company PetroChina Southwest Oil and Gas Field Natural Gas Research Institute, China Institute of Metrology, China Testing Technology Research Study hospital. The main drafters of this standard. Qin Luo, Cai Li, Han bridge, Chen Geng Liang, founder, Chen Yong. Verify natural gas standard material Direct heat and density measurement

1 Scope

This standard specifies a method of natural gas by the gas analysis using standard materials heat and direct measurement of density verification. This standard applies to verify gas standard material prepared by weighing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 11062 natural gas calorific value, density, relative density and Wobbe index calculation method GB/T 12206 Town gas calorific value and relative density determination GB/T 19205 standard gas reference conditions JJF1033-2008 appraisal measurement standard specification JJF1059.1 measurement uncertainties evaluation and expression

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Indirect measurement indirectmeasurement Use of existing natural gas or gas standard material composition data, according to GB/T 11062 calculation, GB/T 19205 regulations state Natural gas, or gas standard calorific substance or method for determining the density. 3.2 Direct measurement directmeasurement Directly calorimeter and density balance measurements obtained in GB/T 19205 Determination of natural gas, or gas standard regulations issued under the state of matter Heat or density method. 3.3 Calorimeter calorificmeter Direct determination of calorific gas detection equipment. 3.4 Density balance densitybalance Weighing using direct means to detect gas density measurement. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 31253-2014_English be delivered?

Answer: Upon your order, we will start to translate GB/T 31253-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 31253-2014_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 31253-2014_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.