OIML R 117-1:2019 (E)
Power supply device (see also Annex B) ..........................................................................49
Checking facilities .............................................................................................................50
5
Requirements specific to certain types of measuring systems ..................................................53
Fuel dispensers ..................................................................................................................53
Measuring systems on road tankers...................................................................................54
Measuring systems for the unloading of ships’ tanks and of rail and road tankers
using an intermediate tank .................................................................................................56
Measuring systems for liquefied gases under pressure (other than LPG dispensers)........56
Fuel dispensers for liquefied gases under pressure (LPG dispensers)...............................57
Measuring systems for milk, beer, and other foaming potable liquids ..............................58
Measuring systems on pipelines and systems for loading ships ........................................59
Measuring systems intended for the fueling of aircraft .....................................................60
Blend dispensers ................................................................................................................61
Measuring systems for bunkering .....................................................................................63
Measuring systems for Liquefied Natural Gas (LNG) ......................................................63
6
Metrological control .....................................................................................................................66
Type approval ....................................................................................................................66
Initial verification ..............................................................................................................75
Subsequent verification .....................................................................................................76
Annex A Requirements for software-controlled components and measuring systems
(Mandatory) ..................................................................................................................................77
A.1
A.2
A.3
A.4
General requirements ........................................................................................................77
Requirements specific for configurations ..........................................................................78
Maintenance and reconfiguration ......................................................................................81
Software documentation ....................................................................................................82
Annex B Interpretation, examples and possible solutions (Informative) .............................................83
Annex C Bibliography ...............................................................................................................................92
4
OIML R 117-1:2019 (E)
Foreword
The International Organisation of Legal Metrology (OIML) is a worldwide, intergovernmental organisation whose
primary aim is to harmonise the regulations and metrological controls applied by the national metrological services, or
related organisations, of its Member States. The main categories of OIML publications are:
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International Recommendations (OIML R), which are model regulations that establish the
metrological characteristics required of certain measuring instruments and which specify methods and
equipment for checking their conformity. OIML Member States shall implement these
Recommendations to the greatest possible extent;
International Documents (OIML D), which are informative in nature and which are intended to
harmonise and improve work in the field of legal metrology;
International Guides (OIML G), which are also informative in nature and which are intended to give
guidelines for the application of certain requirements to legal metrology; and
International Basic Publications (OIML B), which define the operating rules of the various OIML
structures and systems.
OIML Draft Recommendations, Documents and Guides are developed by Technical Committees or Subcommittees which
comprise representatives from the Member States. Certain international and regional institutions also participate on a
consultation basis. Cooperative agreements have been established between the OIML and certain institutions, such as ISO
and the IEC, with the objective of avoiding contradictory requirements. Consequently, manufacturers and users of
measuring instruments, test laboratories, etc. may simultaneously apply OIML publications and those of other institutions.
International Recommendations, Documents, Guides and Basic Publications are published in English (E) and translated
into French (F) and are subject to periodic revision.
Additionally, the OIML publishes or participates in the publication of Vocabularies (OIML V) and periodically
commissions legal metrology experts to write Expert Reports (OIML E). Expert Reports are intended to provide
information and advice, and are written solely from the viewpoint of their author, without the involvement of a Technical
Committee or Subcommittee, nor that of the CIML. Thus, they do not necessarily represent the views of the OIML.
This publication, OIML R 117-1, edition 2019 (E) – was developed by Project Group 4 of OIML TC 8/SC 3 Dynamic
measurement of liquids other than water. It was approved for final publication by the International Committee of Legal
Metrology in 2019 and will be submitted to the International Conference on Legal Metrology in 2020 for formal sanction.
It supersedes OIML R 117-1 dated 2007.
Other OIML Recommendations that have been superseded by the OIML R 117 series of Recommendations include:
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OIML R 86:1989 Drum meters for alcohol and their supplementary devices;
OIML R 105:1993 Direct mass flow measuring systems for quantities of liquids; and
OIML R 118:1995 Testing procedures and test report format for pattern examination of fuel
dispensers for motor vehicles.
OIML Publications may be downloaded from the OIML web site in the form of PDF files. Additional information on
OIML Publications may be obtained from the Organisation’s headquarters:
Bureau International de Métrologie Légale
11, rue Turgot - 75009 Paris - France
Telephone: 33 (0)1 48 78 12 82
Fax:
33 (0)1 42 82 17 27
E-mail:
biml@oiml.org
Internet:
www.oiml.org
5
OIML R 117-1:2019 (E)
Contents
Foreword .....................................................................................................................................................5
Terminology .................................................................................................................................................6
1
Scope ..............................................................................................................................................15
Complete measuring systems ............................................................................................16
Liquids to be measured......................................................................................................17
Constituent elements .........................................................................................................17
2
General requirements ..................................................................................................................18
Constituents of a measuring system ..................................................................................18
Ancillary devices ...............................................................................................................18
Rated operating conditions ................................................................................................19
Accuracy classes................................................................................................................20
Maximum permissible errors and significant faults (for mass and volume indications
of the measuring system) ...................................................................................................21
Conditions for applying maximum permissible errors ......................................................22
Provisions for converted indications .................................................................................23
Maximum permissible errors and significant faults on calculators ...................................26
Indications .........................................................................................................................26
Elimination of air or gases.................................................................................................27
Gas indicator......................................................................................................................30
Transfer point ....................................................................................................................30
Complete filling of the measuring system .........................................................................30
Emptying of the delivery hose...........................................................................................31
Variations in the internal volume of full hoses..................................................................31
Branches and bypasses ......................................................................................................31
Control and closing mechanisms .......................................................................................32
Various provisions .............................................................................................................32
Markings............................................................................................................................32
Sealing devices and stamping plate ...................................................................................33
Unattended delivery ..........................................................................................................35
3
Requirements for meters and ancillary devices of a measuring system ..................................36
Meter .................................................................................................................................36
Indicating device ...............................................................................................................39
Price indicating device ......................................................................................................41
Printing device...................................................................................................................42
Memory device ..................................................................................................................42
Presetting device................................................................................................................43
Conversion device .............................................................................................................44
Calculator ..........................................................................................................................45
Self-service device (SSD)..................................................................................................45
4
Measuring systems equipped with electronic devices ...............................................................49
General requirements ........................................................................................................49
3