GB/T 9248-2008Methods of evaluating the performance of flowmeters for incompressible fluids (English PDF)

Foreword

The revised standard and replaces GB/T 9248-1988 "incompressible fluid flow meter performance evaluation method." This standard and GB/T 9248-1988 the main differences are as follows.

--- In accordance with the provisions of GB/T 1.1-2000 of the full text of the editorial changes;

--- Update normative references;

--- Supply pressure tolerance from the "nominal value ± 1%" to "nominal value ± 3%", oil content from "not more than 1ppm" to "not Greater than 10mg/m³ ", the amount of dust from the" dust particles less than 3µm "to" not more than 0.1g/m 3, small dust particle diameter To 3µm ";

--- According to standard test method has been modified. The standard proposed by China Machinery Industry Federation.

The standard measurement and control of industrial processes by the National Standardization Technical Committee at its first Technical Committee (SAC/TC124/SC1) Centralized.

1 Scope

This standard specifies the representation of incompressible flow meter performance evaluation methods and performance test results in fluid flow meter.

This standard applies to closed conduits measuring single-phase incompressible fluid flow meter.

Meter used under special working conditions, in addition to meeting the requirements of this standard, it should also comply with the other provisions of the relevant standards Claim.

Some test items specified in this standard or requirement may not apply to certain types of meter, and some type of meter can be The need to increase energy pilot projects or other requirements, according to the meter so the test project different variety, type, and other structures in accordance with relevant principles Product standard additions or deletions.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 17212-1998 industrial process measurement and control - Terms and definitions (idt IEC 60902. 1987)

GB/T 17611-1998 closed conduits of fluid flow measurement terminology and symbols (idt ISO 4006:1991)

GB/T 18271.2-2000 Process measurement and control devices - General methods and procedures for evaluating performance - Part 2. under reference conditions Test (idt IEC 61298-2:1995)

3 Terms and Definitions

The following terms and definitions GB/T 17212 and GB/T 17611 apply to this standard established.