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JJG 2070-2009 English PDF

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JJG 2070-2009: Verification Scheme of Measuring Instruments for(150~2500)MPa Pressure
Status: Valid

JJG 2070: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 2070-2009English219 Add to Cart 3 days [Need to translate] Verification Scheme of Measuring Instruments for(150~2500)MPa Pressure Valid JJG 2070-2009
JJG 2070-1990English199 Add to Cart 2 days [Need to translate] Verification Scheme of 200~2500MPa Pressure Measuring Instruments Obsolete JJG 2070-1990

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Basic data

Standard ID JJG 2070-2009 (JJG2070-2009)
Description (Translated English) Verification Scheme of Measuring Instruments for(150~2500)MPa Pressure
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.100
Word Count Estimation 9,929
Date of Issue 2009-07-30
Date of Implementation 2010-01-30
Older Standard (superseded by this standard) JJG 2070-1990
Quoted Standard JJF 1001-1998; JJF 1059-1999; JJF 1104-2003
Regulation (derived from) AQSIQ Announcement No. 78 of 2009
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to (150 ~ 2500) MPa pressure within the pressure range of verification of measuring instruments. Within the pressure range specified composition baseline measurement apparatus and measurement apparatus pressure measuring instrument's name, measuring range and accuracy classes, use, reproduce magnitude uncertainty (or should achieve the best value transfer measurement capability), specifies formed a working pressure measuring instruments measuring instruments names, measurement range and accuracy class, purpose, provides pressure value by the national reference standards of measurement to pass through to the working methods and measuring instruments pass transfer process.

JJG 2070-2009: Verification Scheme of Measuring Instruments for(150~2500)MPa Pressure

---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.
Verification Scheme of Measuring Instruments for (150 ~ 2500) MPa Pressure People's Republic of China National Metrology Verification System Table (150 ~ 2500) MPa pressure measuring instruments MeasuringInstrumentsfor (150 ~ 2500) MPaPressure 2009-07-30 released 2010-01-30 implementation General Administration of Quality Supervision, Inspection and Quarantine released (150 ~ 2500) MPa pressure Measuring instruments calibration system table Replacing JJG 2070-1990 The verification system table by the State Administration of Quality Supervision, Inspection and Quarantine on July 30,.2009 approved Accurate, and since January 30,.2010 shall come into force. Administrative Organization. National Pressure Measurement Technical Committee Drafting Organization. Shanghai Institute of Measurement and Testing Technology The verification system table by the National Pressure Measurement Technical Committee responsible for the interpretation The main author of the verification system table. Pan Zhengyu (Shanghai Institute of Measurement and Testing Technology) Hong Ping (Shanghai Institute of Measurement and Testing Technology) Tu Li Meng (Shanghai Institute of Measurement and Testing Technology)

table of Contents

1 Scope (1) 2 References (1) 3 Terms and Definitions (1) 4 measurement standards (1) 4.1 The basis of measurement instruments (1) 4.2 Measurement standards Instruments measuring range and pressure values recurring uncertainty (1) 4.3 Benchmarking and assurance of value (1) 4.4 National Reference Device Volume Transfer (2) 5 Metrological instruments (2) 5.1 Measurement standards Apparatus composition and measurement range (2) 5.2 Measurement standards The maximum allowable error of equipment (2) 6 Working measuring instruments (2) 7 test system block diagram (2) (150 ~ 2500) MPa pressure gauge test system table

1 Scope

The verification system table applies to (150 ~ 2500) MPa pressure measuring instruments within the scope of the test. Provisions The name of the pressure measuring instruments that make up the measurement standards and measuring instruments within the pressure range, the measuring range and Level of accuracy, purpose, uncertainty of magnitude recurrence (or the best measurement capability that should be attained when carrying out a magnitude transfer); Prescribed the composition of the work of measuring instruments pressure measuring instruments name, measurement range and accuracy grade, purpose; provisions The value of the pressure from the national benchmark passed through the standard measuring instruments delivered to the work of measuring instruments and methods of delivery and delivery process.

2 References

General measurement terms and definitions Evaluation and Expression of Uncertainty in Measurement JJF1104-2003 compilation rules of national metrology system tables

3 Terms and definitions

3.1 jacket pressure jacketpressure Acting on the outer wall of the piston cylinder to control the pressure of the gap between the piston and the piston cylinder. 3.2 Characteristics of the piston cylinder characteristicparameterofthecylinder Each change in jacket pressure 1MPa, piston effective area of relatively small changes. 3.3 stall pressure stalpressure The jacket pressure at which the piston drops at a rate of zero at some pressure measurement.

4 measurement reference equipment

4.1 measurement standards appliance composition Metering reference equipment that is (150 ~ 2500) MPa national pressure benchmark group, hereinafter referred to as the benchmark. Benchmarks include 1500MPa controlled gap piston pressure gauge and 2500MPa controlled gap piston pressure gauge. The benchmark is mainly composed of piston, piston cylinder, internal pressure system, external pressure system, special weight automatic loading system And computer control system. 4.2 Measurement standards Instruments measuring range and pressure value of recurrence of uncertainty The reference measurement range and relative expansion uncertainty are shown in Table 1. Table 1 Benchmark measurement range and relative expansion uncertainty Baseline name (150 ~ 2500) MPa National pressure reference Measuring range (150 ~ 1500] MPa (1500 ~ 2500) MPa Relative expansion Uncertainty 0.02% (k = 3) 0.1% (k = 3) Traceability and benchmarking of the benchmark 4.3

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