Preparing the New EuroLoop Liquid Flow Facility for Accreditation Jos van der Grinten - NMi EuroLoop
Preparing the new EuroLoop liquid flow facility for accreditation Jos van der Grinten Bart van der Stap André Boer NMi EuroLoop Flowways Krohne Altometer
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, 17-19 March 2015 2
Introduction Why do we need three different liquids? Reynolds numbers 1 000 1 000 000 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, 17-19 March 2015 3
Introduction Specifications Specifications liquid flow facility Small circuits Large circuits Flow 10 1 200 m 3 /h 30 5 000 m 3 /h Dimensions of meters 4 12 (100 300 mm) 12 30 (300 750 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, 17-19 March 2015 4
Schematic Process Diagram Bi-directional piston provers Ultrasonic master meters Meters under Test 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 5
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, 17-19 March 2015 6
Piston prover switches 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 7
Piston Prover 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 8
Traceability m Piston Prover Prover diameter (1128.001 ± 0.045) mm (569.250 ± 0.023) mm Distance switches Prover volume U = 0.0047% ~ 0.0072% Master Meter Meter under Test 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 9
Installation uncertainty using Prover 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 10
Deviation [%] Traceability master prover 0.1 0.08 0.06 0.04 6", 10" and 16" Master Meters reduced bore @ 1 mm²/s 16" Flow Meter 10" Flow Meter 6" Flow Meter 0.02 0-0.02-0.04-0.06-0.08 10000 100000 1000000 10000000-0.1 Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 11
Deviation [%] Traceability master prover 6", 10" and 16" Master Meters reduced bore @ 10 mm²/s 0.1 0.08 0.06 0.04 16" Flow Meter 10" Flow Meter 6" Flow Meter 0.02 0-0.02-0.04-0.06-0.08 1000 10000 100000 1000000-0.1 Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 12
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, 17-19 March 2015 13
Traceability Temperature Pt100s calibrated in a temperature bath At EuroLoop NMi EuroLoop certificate VoS temperature calibration 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 15
Product Velocity of Sound (VOS) [m/s] Traceability Temperature VoS 1500 Velocity of Sound (VOS) vs Temperature 1450 1400 1350 1300 1250 1200 100 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 1150 1100 15 20 25 30 35 40 Temperature [ C] 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 16
Product Velocity of Sound (VOS) [m/s] Traceability Temperature VoS 1230 1228 Detailed Graph showing Pressure effect 1226 1224 1222 1220 1218 VOS measured at Pressure P1 1 mm²/s at 9.5 barg 1 mm²/s at atm. Pressure 1216 1214 1212 1210 25 25.5 26 26.5 27 27.5 28 Temperature [degc] 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 17
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, 17-19 March 2015 18
Deviation [%] 0.3 Comparison 8" Krohne 11 path USM 0.2 0.1 0-0.1-0.2 Jet Fuel 1.48 mm²/s Heating Oil 4.2 mm²/s Heating Oil 4.3 mm²/s Light Crude 11.25 mm²/s Heavy Crude 45 mm²/s EuroLoop PP 1 mm²/s EuroLoop PP 10 mm²/s EuroLoop PP 100 mm²/s -0.3 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Reynolds number [-] 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 19
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 17025 Sample calibration certificate Intercomparison 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 20
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] (10 1 200) 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 (70 5 000) m³/h (49 3 500) 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, 17-19 March 2015 21
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 17025 accreditation Staff: 2 operators ¼ Chief Metrologist 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 22
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 1 000 < Re < 4 000 000 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 23
Thank you 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 24
Questions? Closed loop calibration facility 3rd European Flow Measurement Workshop, Noordwijk, 17-19 March 2015 25