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PS 443-2-2026
| Code | Classification |
|---|---|
| 17.060 | Measurement of volume, mass, density, viscosity |
| Standards / Amendment / Corrigendum | |
|---|---|
| 1 | OIML R 117-2:2019 |
| Replaces |
|---|
| PS 443-1999 |
This document specifies the metrological and technical requirements applicable to dynamic measuring systems for quantities of liquids (volume or mass) other than water that are subject to legal metrological control.
In principle, this document applies to all dynamic liquid measuring systems equipped with a meter, regardless of the measuring principle adopted by the meter or its field of application. Table 1 identifies the complete measuring systems covered by this Recommendation. The test procedures for these complete measuring systems are specified in OIML R 117-2 (this part).
This document also specifies the requirements for the type approval of components of measuring systems, such as the meter, electronic calculator and other components. A list of these components is given in 2.1.
This document does not cover the following liquid meters and liquid measuring systems, which are covered by other OIML Recommendations:
- Dynamic measuring instruments and systems for cryogenic liquids (excluding liquefied natural gas, LNG), see OIML R 81;
- Water meters used for the measurement of cold potable water and hot water, see OIML R 49;
- Heat meters, see OIML R 75.
This document is not intended to prevent the development of new technologies.
National or international regulations are expected to clearly identify liquid measuring systems other than water that are subject to legal metrological control.
For all water measuring systems not covered by OIML R 49, it is the responsibility of the national authorities to determine whether the use of this Recommendation is mandatory.
Part 2 of this document (OIML R 117-2) specifies the metrological controls and performance tests necessary to demonstrate 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.
Table 1 — Complete dynamic liquid measuring systems covered by this Recommendation
(copy of Table 1 in R 117-1, 1.1)
| R 117-1 Section (Requirements) | R 117-2 Annex (Test procedures) | Complete measuring systems covered by R 117 |
|---|---|---|
| 5.1 and 5.9 | A | Fuel dispensers and blend dispensers |
| 5.5 | A-LPG | Fuel dispensers for liquefied gases under pressure (LPG dispensers) |
| 5.2 | B | Measuring systems on road tankers |
| 5.3 | C | Measuring systems for unloading ships’ tanks and for rail and road tankers using an intermediate tank |
| 5.4 | D | Measuring systems for liquefied gases under pressure (other than LPG dispensers) |
| 5.6 | E | Measuring systems for milk, beer, and other foaming potable liquids |
| 5.7 | F | Measuring systems on pipelines and systems for loading ships |
| 5.8 | G | Measuring systems intended for the fueling of aircraft |
| 5.10 | K | Measuring systems for bunkering |
| 5.11 | L | Measuring systems for liquefied natural gas (LNG) |