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ISO 22192 pdf free download

ISO 22192-2021 pdf free download.Bunkering of marine fuel using the Coriolis mass flow meter (MFM) system.
5 Metrological requirements
5.1 General
Clause 5 specifies the MFM’s metrological traceability, calibration and re-calibration requirements br the approval and performance of the MFM system applicable to custody transfer bunkering. The MFM system shall be operated within rated conditions as set out in these requirements to meet the 0,5 % expanded measurement uncertainty.
5.2 Mass flow meter requirement
5.2.1 Every MFM shall be calibrated before custody transfer use for bunkering and shall include its adjustment device(s) and ancillary device(s).
5.2.2 The calibration should be done using bunker fuel or equivalent fluid once the primary calibration facilities are available to meet the traceability and calibration uncertainty requirements. Until the requirements in this subclause are fulfilled, the calibration requirements as stated in 52.3 and 52.4 shall apply for every MFM before approval for custody transfer use.
5.2.3 For water calibration (level 1) with direct traceability to S.l. unit of mass, the maximum error of MFM shall not more than 0,1 % of reading. The calibration shall be carried out by a laboratory meeting the requirements of ISO/IEC 17025.
5.2.4 There shall be a letter, accompanied by relevant supporting documents, declaring that the meter performance meets the requirement of maximum measurement uncertainty for bunker fuel fluid flow measurement to be not more than 0,2 % (level 2).
NOTE Supporting documents are inclusive but not limited to type evaluation certificates for regional directives (e.g. EC/EU type examination), and reports of tests conducted as part of the process In obtaining these type evaluation certificates.
The report(s), supporting documents and letter shall be issued by either:
a) a national metrology institute; or
b) an appointed International Organization of Legal Metrology (OIML) issuing authority in accordance with the relevant 01 ML recommendations.
5.2.5 The MFM calibration report shall comprise the following details in addition to what is in
lSO/IEC 17025:
a) expanded measurement uncertainty:
b) meter errors across the measurement range between the minimum mass flow rate, Qmjn and the
maximum mass flow rate, Qmax;
c) configuration and parameter setting values, including calibration factors to a specific MFM such as serial number and stored zero value.
5.2.6 The MFM used for bi-directional measurements shall be calibrated at forward and reverse flow directions with at least five evenly spaced flowrates in each direction across the measurement range between Qrnjn and Qmax of the MFM. Each flowrate shall have at least 3 runs.
5.2.7 The MFM shall also be tested to prove the meter stability periodically. MFM shall be re-calibrated if the requirement £3.7 is not met.
5.3 Mass flow meter system requirements
5.3.1 The expanded measurement uncertainty of overall performance of the MFM system shall he not more than 0,5 %. It should take into consideration the following uncertainty sources influenced by:
— meter calibration;
— product condition e.g. viscosity and density;
— process flow condition e.g. aeration flow and flow turbulences;
— piping line system configuration and meter installation which can affect measurement conditions; and
— any other source that may influence the mass flow measurement.
ISO U2i — All rIgnt reerveu
ISO 22192:2021(E)
5.3.2 The expanded measurement uncertainty should include all the uncertainty components outlined in Annex B.
5.3.3 The measurement uncertainty shall be assessed and evaluated in accordance with ISO/IEC Guide 98-3.
5.3.4 The requirements of zero offset limit and zero verification include the following:
a) Maximum permissible zero offset shall be not more than 0,2 % Of Qrn•
b) Zero setting and zero verification are required during commissioning. These operations shall be performed by conformity body.
c) Zero setting is done through measuring and storing the zero offset during no flow condition, so that a new base line is formed for the measured mass flow when particular criteria (depending on meter type used) are met.ISO 22192 pdf download.

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