BS ISO 7278-3:1998
Current
The latest, up-to-date edition.
Liquid hydrocarbons. Dynamic measurement. Proving systems for volumetric meters Pulse interpolation techniques
Hardcopy , PDF
English
15-08-1998
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1 Scope
2 Normative reference
3 Definitions
4 Principles
4.1 General
4.2 Double-timing method
4.3 Quadruple-timing method
4.4 Phase-locked-loop method
5 Conditions of use
5.1 General
5.2 Double-timing method
5.3 Quadruple-timing method
5.4 Phase-locked-loop method
6 Method requirements
7 Tests for pulse interpolation system
7.1 General
7.2 Test circuit
7.3 Test schedule
7.4 Immunity from electrical noise
8 Test report and markings
Annex A (normative) Measurement techniques for determining
pulse intervals
Annex B (informative) Bibliography
Three methods commonly used in conjunction with pipe provers and turbine or displacement meters. Test procedures for checking satisfactory operation.
| Committee |
PTI/12
|
| DevelopmentNote |
Supersedes 95/120225 DC and BS 6866-3(1987). (07/2005)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO7278 gives guidance on the procedures and conditions of use to be observed if pulse interpolation is used in conjunction with a pipe or small volume prover and a turbine or displacement meter to improve the discrimination of proving.
This part of ISO7278 describes the three methods of pulse interpolation most commonly used and their conditions of use. It also describes the equipment and test procedures for checking that the pulse interpolation system is operating satisfactorily and it describes some methods of measuring the irregularity of pulse spacing for a meter.
| Standards | Relationship |
| ISO 7278-3:1998 | Identical |
| ISO 7278-2:1988 | Liquid hydrocarbons — Dynamic measurement — Proving systems for volumetric meters — Part 2: Pipe provers |
| ISO 2715:1981 | Liquid hydrocarbons Volumetric measurement by turbine meter systems |
| ISO 2714:1980 | Liquid hydrocarbons Volumetric measurement by displacement meter systems other than dispensing pumps |
| ISO 4267-2:1988 | Petroleum and liquid petroleum products — Calculation of oil quantities — Part 2: Dynamic measurement |
| ISO 6551:1982 | Petroleum liquids and gases Fidelity and security of dynamic measurement Cabled transmission of electric and/or electronic pulsed data |
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