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PS 443-1-2026
Active
dynamic measuring systems for liquids other than water - Part 1: Metrological and technical requirements
Committee:
Petroleum Products, Fuels, and Lubricants
Sector:
Chemicals and Petroleum
Available Standards
Original Standard
إنجليزي (English)
80
Page
2026
International Classification for Standards (ICS)
| Code | Classification |
|---|---|
| 17.060 | Measurement of volume, mass, density, viscosity |
Adopted Standards
| Standards / Amendment / Corrigendum | |
|---|---|
| 1 | OIML R 117-1:2019 |
Replacement Sequence
| Replaces |
|---|
| PS 443-1999 |
Scope
- This document specifies the metrological and technical requirements applicable to dynamic measuring systems for quantities of liquids other than water, whether measured by volume or mass, that are subject to legal metrological control. It also specifies the type approval requirements for specified components of measuring systems, such as the meter, electronic calculator and other components.
- In principle, this document applies to all measuring systems equipped with a meter, as defined in T.m.3 (continuous measurement), regardless of the measuring principle on which the meters operate or their field of application, except for the following:
- Dynamic measuring instruments and systems for cryogenic liquids, covered by OIML R 81.
- Water meters used for the measurement of cold potable water and hot water, covered by OIML R 49-1, OIML R 49-2 and OIML R 49-3.
- Heat meters, covered by OIML R 75-1, OIML R 75-2 and OIML R 75-3.
- This document is not intended to prevent the development of new technologies.
- National or international regulations are expected to clearly identify the measuring systems for liquids other than water that are subject to legal metrological control. With regard to the measurement of wastewater, it is the responsibility of the national authorities to decide whether the use of measuring systems complying with this document is mandatory and to specify the required accuracy class.
- Part 2 of this document, OIML R 117-2, specifies the metrological controls and performance tests necessary to verify compliance with the metrological and technical requirements specified in OIML R 117-1, for the purpose of:
- Type evaluation of complete measuring systems; and
- Type evaluation of measuring system components that have been approved for separate type approval.