Comparison Display

CIPM MRA PARTICIPANTS

The KCDB - the BIPM key comparison database – supports the CIPM MRA. The KCDB contains information on the internationally recognized Calibration and Measurement Capabilities (CMCs) for services available from the participating institutes, and the key and supplementary comparisons supporting these CMCs.

All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement

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CIPM MRA PARTICIPANTS

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EURAMET.M.FF-S24

Information & contact
Participants

Metrology area, Sub-field	Mass and related quantities, Fluid Flow
Description	Comparison of standards for micro liquid flow rates
Time of measurements	2025 - 2026
Status	Protocol complete

References	Technical Protocol
Measurand	Mass flow rate TS1 measurement flows range from 1 g/h to 200 g/h (1; 5; 10; 50; 100; 150; 200) g/h TS2 measurement flows range from 500 g/h to 30 000 g/h (200; 500; 1 000; 3 000; 6 000; 10 000; 15 000; 20 000; 30 000) g/h
Parameters	Working fluid temperature: 20 °C ± 5 °C Ambient temperature: 20 °C ± 5 °C Ambient humidity: from 30 % to 80 % Atmosphere pressure: from 86 kPa to 106 kPa Absence of free air in the measuring line of the standard
Transfer device	TS1: a Bronkhorst Low Flow Coriolis Mass Flow Meter, mini CORI-FLOW ML120 TS2: a Bronkhorst Low Flow Coriolis Mass Flow Meter, mini CORI-FLOW M14

Comparison type	Supplementary Comparison
Consultative Committee	CCM (Consultative Committee for Mass and Related Quantities)
Conducted by	EURAMET (European Association of National Metrology Institutes)
Comments	A comparison is organized in order to determine the degree of equivalence of standards for micro liquid flow rates under static load changes in the range of 1 g/h to 30 000 g/h at ambient pressure and temperature. Two Coriolis Mass Flow Meters will be used as Transfer Standards (TS). If the participants are not able to calibrate in the full measurement range specified, they may calibrate the meter over a part of the flow range. Each laboratory will be responsible for transferring the meter to the next laboratory.
Pilot institute	CMI Czech Metrology Institute Czechia
Contact person	Miroslava Benkova +420 734 877 960

BAM	Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET

CHMU/CHMI

Czech Hydrometeorological Institute, Czechia, EURAMET

DFM	Danish Fundamental Metrology A/S, Denmark, EURAMET

IH-LQPM

Instituto Hidrográfico - Laboratório de Química e Poluição do Meio Marinho, Portugal, EURAMET

IRA	Institut Universitaire de Radiophysique Appliquée, Switzerland, EURAMET

LNE	Laboratoire national de métrologie et d'essais, France, EURAMET

RISE	Research Institutes of Sweden AB, Sweden, EURAMET