Preparing the New EuroLoop Liquid Flow Facility for Accreditation. Jos van der Grinten - NMi EuroLoop

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1 Preparing the New EuroLoop Liquid Flow Facility for Accreditation Jos van der Grinten - NMi EuroLoop

2 Preparing the new EuroLoop liquid flow facility for accreditation Jos van der Grinten Bart van der Stap André Boer NMi EuroLoop Flowways Krohne Altometer

3 Contents Introduction Schematic process diagram Calibration principle Piston prover Traceability Product quality Comparison Prepare for RvA accreditation Conclusion & recommendations 3rd European Flow Measurement Workshop, Noordwijk, March

4 Introduction Why do we need three different liquids? Reynolds numbers Transition between laminar and turbulent turbulent Velocity profile changes with Re Parabolic to flat profile Ultrasonic meters are sensitive to profile Corrections are made in firmware Meter accurate in a wide Re range 3rd European Flow Measurement Workshop, Noordwijk, March

5 Introduction Specifications Specifications liquid flow facility Small circuits Large circuits Flow m 3 /h m 3 /h Dimensions of meters 4 12 ( mm) ( mm) Flanges and pressure classes ANSI 150, PN 10 ANSI 150, PN 10 Kinematic viscosity 1, 10, 100 mm 2 /s (cst) 1, 10, 100 mm 2 /s (cst) Temperature stability Better than 0.2 C Better than 0.2 C Maximum back pressure 10 bar(g) 10 bar(g) Overall uncertainty volume by master / piston Overall uncertainty mass by master / piston 0.06% / 0.02% 0.06% / 0.02% 0.07% / 0.04% 0.07% / 0.04% 3rd European Flow Measurement Workshop, Noordwijk, March

6 Schematic Process Diagram Bi-directional piston provers Ultrasonic master meters Meters under Test 3rd European Flow Measurement Workshop, Noordwijk, March

7 Calibration principle Master Meter Method / Piston prover method Mass conservation Line pack correction Double timing method Eq. of State Corrections for systematic deviations p / t t t p / t Master MuT 3rd European Flow Measurement Workshop, Noordwijk, March

8 Piston prover switches 3rd European Flow Measurement Workshop, Noordwijk, March

9 Piston Prover 3rd European Flow Measurement Workshop, Noordwijk, March

10 Traceability m Piston Prover Prover diameter ( ± 0.045) mm ( ± 0.023) mm Distance switches Prover volume U = % ~ % Master Meter Meter under Test 3rd European Flow Measurement Workshop, Noordwijk, March

11 Installation uncertainty using Prover 3rd European Flow Measurement Workshop, Noordwijk, March

12 Deviation [%] Traceability master prover ", 10" and 16" Master Meters reduced 1 mm²/s 16" Flow Meter 10" Flow Meter 6" Flow Meter Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, March

13 Deviation [%] Traceability master prover 6", 10" and 16" Master Meters reduced 10 mm²/s " Flow Meter 10" Flow Meter 6" Flow Meter Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, March

14 Traceability Temperature Piston prover 45 m long Partially located outdoor Thermal insulation applied Temperature measurement is essential Thermowells cannot be applied Average temperature over cross section of pipe Fast measurement (Pt100 is slow) Velocity of Sound temperature measurement Depends om pressure, temperature and fluid Detection of product contamination 3rd European Flow Measurement Workshop, Noordwijk, March

15 Traceability Temperature Pt100s calibrated in a temperature bath At EuroLoop NMi EuroLoop certificate VoS temperature calibration 3rd European Flow Measurement Workshop, Noordwijk, March

16 Product Velocity of Sound (VOS) [m/s] Traceability Temperature VoS 1500 Velocity of Sound (VOS) vs Temperature mm²/s at 9.5 barg 100 mm²/s at atm. Pressure 10 mm²/s at 9.5 barg 10 mm²/s at Atm. Pressure 1 mm²/s 9.5 barg 1 mm²/s at atm. Pressure Temperature [ C] 3rd European Flow Measurement Workshop, Noordwijk, March

17 Product Velocity of Sound (VOS) [m/s] Traceability Temperature VoS Detailed Graph showing Pressure effect VOS measured at Pressure P1 1 mm²/s at 9.5 barg 1 mm²/s at atm. Pressure Temperature [degc] 3rd European Flow Measurement Workshop, Noordwijk, March

18 Product Quality Three liquids Density ρ (p, t, x) Kinematic viscosity ν (p, t, x) Product Quality Control and monitoring Small amount of product mixture After product change in the prover If Pt100 and VoS start to deviate Method Samples analyzed in lab Supplier audit 3rd European Flow Measurement Workshop, Noordwijk, March

19 Deviation [%] 0.3 Comparison 8" Krohne 11 path USM Jet Fuel 1.48 mm²/s Heating Oil 4.2 mm²/s Heating Oil 4.3 mm²/s Light Crude mm²/s Heavy Crude 45 mm²/s EuroLoop PP 1 mm²/s EuroLoop PP 10 mm²/s EuroLoop PP 100 mm²/s E+03 1.E+04 1.E+05 1.E+06 1.E+07 Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, March

20 Prepare for RvA accreditation Expansion of EuroLoop s accreditation RvA K161 Traceable calibrations of all instrumentation Validation reports of processes and software Applicable quality assurance procedures Uncertainty evaluation Internal audit report Cross reference list with ISO Sample calibration certificate Intercomparison 3rd European Flow Measurement Workshop, Noordwijk, March

21 HCS code FL 1 0 Measured quantity, Instrument, Measure Flow of liquids Range CMC Remarks FL 1 1 Liquid flow rate See below See below Volume flow rate [m³/h] at actual conditions Mass flow rate [kg/h] FL 1 2 VL 1 0 Flow transducers Volume of flowing liquids See below See below Liquid flow meters and Dp devices See below See below Unlimited volume [m³] ( ) m³/h (7 840) 10³ kg/h 0.02% piston prover 0.06% master meter 0.04% piston prover 0.07% master meter Unlimited mass [kg] Liquids 1, 10 and 100 mm²/s kinematic viscosity Maximum back pressure 10 bar gauge ( ) m³/h ( ) 10³ kg/h 0.02% piston prover 0.06% master meter 0.04% piston prover 0.07% master meter Liquids 1, 10 and 100 mm²/s kinematic viscosity Maximum back pressure 10 bar gauge 3rd European Flow Measurement Workshop, Noordwijk, March

22 Organization / Operation Krohne Owner facility Design & construct Maintenance Staff: 1 Site manager 1 Automation 1 Instrumentation & Maintenance 4 Contractors NMi EuroLoop Issues certificates Is responsible for quality of results Applies for ISO accreditation Staff: 2 operators ¼ Chief Metrologist 3rd European Flow Measurement Workshop, Noordwijk, March

23 Conclusion EuroLoop liquid is an independent facility For calibration of volume and mass flow meters Using 3 hydrocarbon liquids 1, 10, 100 mm²/s Covering range < Re < rd European Flow Measurement Workshop, Noordwijk, March

24 Thank you 3rd European Flow Measurement Workshop, Noordwijk, March

25 Questions? Closed loop calibration facility 3rd European Flow Measurement Workshop, Noordwijk, March