Flow Calibration Procedure MPU Series B
Contents
1. Comments Witnessed Contractor Customer FMC Date PRD 0000022557 Rev 00G Page 25 of 32 MNKSO13 0 1 10 09 MC x MPU Flow Calibration Procedure Technologies This page is intentionally left blank Page 26 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B CONCLUSION Ultrasonic Gas Flow Meter 9 CONCLUSION Flow Meter Identification Serial Tag Number This Calibration Flow Test is approved without any remarks Sign This Calibration Flow Test is not approved Sign This Calibration Flow Test is approved with the following remarks For Contractor For Customer For FMC Date Signature Date Signature Date Signature PRD 0000022557 Rev 00G Page 27 of 32 MNKSO13 0 1 10 09 MPU Series B APPENDIX Ultrasonic Gas Flow Meter 10 APPENDIX Appendix 1 Reference Instrumentation Advantica Bishop Auckland England Selected amounts of natural gas from the British Gas natural gas pipe system is lead through the test site While running larger flow rates than the gas consume the pressure in the downstream pipe will increase High flow rates can therefore only be run for a limited duration in order to keep the pressure in the natural gas pipe system below its maximum limit As the gas passes the test site not in a loop the possibilities for varying the pressure and the temperature of the gas are limited Gas turbine meters will be used as reference meters De2. Meter Appendix 1 Reference Instrumentation Force Technology Vejen Denmark Force Technology is accredited by DANAK the Danish Accreditation Body for calibration and verification of all types of gas and flow meters including ultrasonic meters Since 1990 FORCE Technology has been the National Reference Laboratory for gas flow measurement The calibration bench includes six working standards and one meter section for building in meters for calibration The natural gas is circulated in a loop by an axial compressor The calibration may be performed on pulse output counters mA and voltage outputs During calibration gas temperatures gas pressure compressibility factor and pulses from the meter to be tested and the applied working standard s are registered All data is registered electronically and the meter s errors are determined and calculated Capacity Volume flow 8 10000 am h Dimensions 2 16 Pressure range 0 50 bar Uncertainty 0 296 Medium Natural gas Gas temperature 10 C 30 C Traceability PTB and NMI Certificates hold all relevant information including gas composition and Reynolds numbers if any The certificate will be issued in Danish or English languages as requested by the customer PRD 0000022557 Rev 00G Page 31 of 32 MNKSO13 0 1 10 09 MPU Series B APPENDIX Ultrasonic Gas Flow Meter The specifications contained herein are subject to change without notice and any user
3. downstream spools and or Adapter Spools If applicable flow conditioner Required gaskets bolts and nuts Cables and interface converters to be used between the meter and the safe area PC or laptop for logging of trendlog data checking of signal quality and calculation of correction factors Spare parts for the meters y Electronic boards y Transducers y Transducer cables Tools to open the electronic box and to change the transducers Page 4 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B INTRODUCTION Ultrasonic Gas Flow Meter 1 2 References The following documents are referred to within this Test Procedure 1 NPD regulations Regulations for fiscal measurement of oil and gas 2 NPD regulations Regulations relating to measurement of petroleum for fiscal purposes and for calculation of CO2 tax Maleforskriften The measurement regulations November 2001 3 NORSOK Fiscal Measurement systems for hydrocarbon standard 1 104 gas Rev 3 November 2005 4 A G A Report No Measurement of Gas by Multipath Ultrasonic 9 Second Edition Meters April 2007 5 PRD 0000022555 Function Test Procedure MPU Series B 6 PRD 0000022541 Product Identification MPU Series B 7 USM 0000020565 User Manual MPU Series B 1 3 Warnings Warning gas under pressure Never attempt to disconnect or connect a pressurized connection Never apply powe
4. varying the pressure and the temperature of the gas are limited Gas turbine meters will be used as reference meters Details of the reference meters related temperature and pressure transmitters and the resulting uncertainty will be enclosed in the calibration certificates issued by Ruhrgas Secondary instruments are calibrated and traceable to National standards The pressures and temperatures are averaged and used with the turbine average frequencies to calculate the reference flow rates Each run has a duration of approximately 180 seconds Gas samples will be taken during the course of the test The flow rate at the ultrasonic meters is calculated by converting the reference measurement to mass flow rate The densities at the reference meter and at the ultrasonic meters are calculated using measured pressure and temperature at both places and chemical analysis and compressibilities using the AGA 8 z calculation method Quality assurance Calibrated against DVGW piston prover which is recognized as a reference standard by PTB DVGW German Gas and Water Association Complies with EN 45001 PRD 0000022557 Rev 00G Page 29 of 32 MNKSO13 0 1 10 09 MPU Series B APPENDIX Ultrasonic Gas Flow Meter Appendix 1 Reference Instrumentation CEESI Clear Lake Iowa USA Selected amounts of natural gas from the Northen Border Gas Company naturual gas pipe system is lead through the test site As the gas passes the test site not
5. Multipath Ultrasonic Gas Flow Meter ap MG Technologies Flow Calibration Procedure Procedure Manual PRD 0000022557 Rev 00G FL nb October 2009 MNKS013 0 1 10 09 The Most Trusted Name In Measurement MC Technologies MPU Flow Calibration Procedure History Take over from KOS SAP System Rev 01 B 31 01 2008 20143 released Rev 00C April 2008 20207 released New Logo Rev 00D September 2008 20384 released Technical description of Force calibration Facility OOE February 2009 20512 Released New first and last page Rev F October 2009 20756 released Test set up modified Rev G October 2009 20767 Important released Average flow deviation delete All information and technical specifications in this documentation have been carefully checked and compiled by the author However we cannot completely exclude the possibility of errors Smith Meter GmbH is always grateful to be informed of any errors MPU Series B Ultrasonic Gas Flow Meter TABLE OF CONTENT 1 INTRODUCTION 4 1 1 Equipment Required eeeeeeeeeeeeeeeeeeeerene nennen nnn 4 1 2 PRTC RCC EE RE RE RE EE G 5 1 4 Warning S i s sis eie tu cadi due Ee EN dr uu dva Ee rd a UR EK kii 5 1 4 ADDIS VIAMONS e SE4 EE 4 X 5 1 5 Responsibility 1 ornantur rana kun We WK KA N Ke ee ee du kn 6 2 TEST
6. Page 16 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B ACCEPTANCE CRITERIA Ultrasonic Gas Flow Meter Small Meter Accuracy Requirements UMs less than 12 nominal diameter shall meet the following flow measurement accuracy requirements prior to making any calibration factor adjustment Maximum Error 1 0 for Q Qi Qmactest Ref AGA 9 Ch 5 1 3 1 4 for Qmin tess Qi Qt where Q lt 0 1Qmax spec Ref definition of Qmax spec in section Fehler Verweisquelle konnte nicht gefunden werden 6 1 2 Repeatability AGA 9 Less than 40 2 96 for Qt Qi Qmax test Less than 0 4 96 for Qmin test Qi Qt The repeatability shall correspond to the 95 confidence interval alpha 0 05 of the mean of the deviations for each flow rate based on the assumption that the deviations are normally distributed The repeatability for each flow velocity is calculated the following way Repeatability 1 96 Jn where 1 96 is the area under the standard normal curve that equals 1 alpha or 95 is the standard deviation of the flow deviations nis the number of repetitions The standard deviation calculation method used is the one that estimates values based on a sample of the population rg n n 1 Standard deviation 6 1 3 Linearity AGA9 The linearity is found by calculating the average flow deviation in percent for each flow rate picking the maximum and the minimum val
7. SETUP 8 2 1 In House Testing error nu en urit tcu iiri i eu en 8 2 2 Installation Arrandement asss skans sd eek Ke RR KAAR aba RE KAN ARE Rd a nE 8 3 HARDWARE INSPECTION AND INSTALLATION 10 4 INITIAL CHECKING sesse sed iss es vit SS ie vici vi ERU ee EVE ge ke 12 5 FLOW TEST 14 5 1 Flow Test Description oreet ant ENE rnnt nu unt 14 5 2 Flow RANGCS issie GEKNERS NG GEEN SS Gee ee inaina ka ee ke Red 15 5 3 Flow Test Documentation eese 15 5 4 Post Test Procedure issie sans kies cuna tapas sias aaa EG NE EA NEAR GN EG GENE N As AN 15 6 ACCEPTANCE CRITERIA ss ase ss sees ek eN ek se Rek Ke EEN EKEN EA SKEER Ek N Ek Ed 16 6 1 Acceptance Criteria for the MPU according to AGA 9 16 6 1 ME POPULO AR OE EE EE EE 16 6 1 2 Repeatability AGA 9 see ee AE Ee ee AA Gee ee 17 6 1 3 Linearity AGAS ed EE Hede He EE Ee EERW ed Ee Ede 17 6 1 4 Velocity of Sound AGAS uet dixe kx EE ga niue ica N ee DS 18 6 2 Acceptance Criteria for the MPU according to NPD 19 ST Poele di up 19 6 2 2 Repeatability INPD ss n ER eeu EI Sk demas tuse ke Ge 19 6 2 3 LING ANIL NP sees ser SS GO GOD OD er 20 6 2 4 Uncertainty limit for the MPU NPD sesse ee ee ee 20 Ta PROJECT SPECIFIC INFORMATION esse ees ee ee EE EE 21 Til Proj
8. ardous area related aspects The test site is responsible for checking for gas leakage on all equipment and to permit power to be switched on Page 6 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B INTRODUCTION Ultrasonic Gas Flow Meter This page is intentionally left blank PRD 0000022557 Rev 00G Page 7 of 32 MNKS013 0 1 10 09 MC MPU Flow Calibration Procedure Technologies 2 TEST SET UP 2 1 In House Testing In house testing is performed prior to the flow test FAT according to PRD 0000022555 Function Test Procedure MPU Series B 5 e Zero calibration is performed to determine transducer delays and At corrections e Inner diameter and path lengths are accurately measured e Zero flow and velocity of sound is verified either with pressurized Nitrogen or air after flow meter parameter configuration 2 2 Installation Arrangement A general installation arrangement is sketched below The item numbers refer to table in chapter 7 5 Pressure Transmitter Alt 1 7 SEN D Electronics Enclosure Pressure Transmitter Alt 2 71 Optional Flow Conditioner N Temperature Transmitter 8 EN ES Optional Upstream Flange Connection Downstream Optional Downstream Adapter Spool Spool Adapter Spool Upstream Spool Figure 1 Installation Arrangement Page 8 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B U
9. bration Data Flow Velocity m s ft s Min Max Volume Flow Rate m h ft h Min Max ONS eic MR NNS cssc d RR sen NR aac NN NR sae RD cic di ERR icis i NR E EE Page 22 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B PROJECT SPECIFIC Ultrasonic Gas Flow Meter INFORMATION 7 4 Flow Test Points Nominal flow rates Flow rate Flow velocity related to Qmin test m h or ft h m s or ft s and O max test Test AGA 9 recommendation NPD recommendation Point 1 0 025Q max test O min test 2 0 05Q max test 0 2Q naxtest 3 0 1Q nates 0 45Qmax test 4 0 25 Q max test 0 8Q nates 5 0 5Q naxtest O max test 6 0 75 Q max test 7 O max test NOTE Qmax test This is a value that is according to customer requirements which is limited by Qmax spec Qmax test Qmax spec PRD 0000022557 Rev 00G Page 23 of 32 MNKSO13 0 1 10 09 MIC MPU Flow Calibration Procedure Technologies Qnmin test This is a value that is according to customer requirements which is limited by Qmin spec Qnin test Qmin spec 7 5 Additional Equipment Data Fill in details on the parts listed Refer to Figure 1 Section 2 2 Item Part Details 1 MPU Length flange connections 2 Upstream Spool Length flange connections inside diameter 3 Downstream Spool Length flange connections inside diameter 4 Opt
10. correspond to the 95 confidence interval alpha 0 05 of the mean of the deviations for each flow rate based on the assumption that the deviations are normally distributed The repeatability for each flow velocity is calculated the following way Repeatability 1 96 p y Jn where is the average flow deviation 1 96 is the area under the standard normal curve that equals 1 alpha or 95 is the standard deviation of the flow deviations nis the number of repetitions The standard deviation calculation method used is the one that estimates values based on a sample of the population n x xp n n 1 Standard deviation Additionally the Measurements regulations from NPD 2 has a repeatability limit of 0 5 band for Q gt 0 05Qmax spec PRD 0000022557 Rev 00G Page 19 of 32 MNKSO13 0 1 10 09 T MC MPU Flow Calibration Procedure Technologies 6 2 3 6 2 4 Page 20 of 32 Linearity NPD The limit for linearity is according to the NORSOK standard I 104 Fiscal Measurement systems for hydrocarbon gas Rev 3 November 2005 3 These requirements are applicable after application of zero flow point calibration but before application of any correction factors for flow velocities above 1 5m s The linearity must be better than 1 0 band The linearity is found by calculating the average flow deviation in percent for each flow rate picking the maximum and the minimum value of thes
11. culated velocity of sound with more than 0 2 provided sufficient accuracy of the externally calculated velocity of sound This verifies that the measured travel times of the acoustic signals are correct The accuracy of the reference measurement of the VOS and possible temperature variations within the pipe must be taken into account when evaluating this point Page 18 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B ACCEPTANCE CRITERIA Ultrasonic Gas Flow Meter 6 2 Acceptance Criteria for the MPU according to NPD 6 2 1 Accuracy NPD The accuracy before flow calibration shall be within 1 596 for velocities above 1 5m s The uncertainty of the reference measurement of the volume flow must be taken into account when evaluating this point According to the NPD requirements the deviation from the reference shall be 0 5 for velocities above 0 05 Qmax spec with flow calibration factors implemented The uncertainty of the reference measurement will be documented in the calibration certificates 6 2 2 Repeatability NPD The repeatability shall be better than 0 2 The limit for repeatability is according to the NORSOK standard I 104 Fiscal Measurement systems for hydrocarbon gas Rev 3 November 2005 3 These requirements are applicable after application of zero flow point calibration but before application of any correction factors for flow velocities above 1 5 m s The repeatability shall
12. data from the MPU in a trendlog file This file contains flow rate flow velocity VOS path velocities path VOS signal gains signal percentages signal to noise levels and all alarms that is flagged during the calibration The content of the file should be checked to ensure that the MPU was measuring without any errors or faults during the calibration VOS should be checked at least at one flow rate against theoretical VOS calculated from gas composition This is typically done at about 0 5Qmax test AGA 10 should be used to calculate the theoretical VOS After all calibration points have been completed the calibration factor s should be calculated and put into the meter Then at least one verification point should be taken Normally this point is taken at about 0 5QMax AGAO require two verification points if a linearization algorithm is used Ax B or multipoint The test will result in an official flow calibration certificate for each meter issued by the test site Page 14 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B FLOW TEST Ultrasonic Gas Flow Meter 5 2 Flow Ranges Qmaxspee 30 98 26 82 20 60 Qa 3 98 26 82 20 60 NOTE Qmax test This is a value that is according to customer requirements which is limited to Qmax spec Qmax test Q max spec Qmin test This is a value that is according to customer requirements which is limited to Qmin spec Qmin test Qmi
13. e and calculate the difference between them The calculation of repeatability and linearity will be performed by putting the recorded flow data with reference measurements and flow deviations into a prepared Excel file Uncertainty limit for the MPU NPD The limit for the uncertainty of the MPU after the flow calibration is according to Measurement regulation 1 November 2001 2 These requirements are applicable after the flow calibration factors have been implemented The uncertainty should be calculated for each flow rate The uncertainty should be inside the limit of 0 796 for flow rates above 0 05 Qmax spec The uncertainty should contain the uncertainty elements from the flow calibration site itself error after flow calibration and repeatability All uncertainties should be converted to 9596 confidence before added using the root square addition independent uncertainties PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B PROJECT SPECIFIC Ultrasonic Gas Flow Meter INFORMATION 7 PROJECT SPECIFIC INFORMATION 7 1 Project Data Project Name End Customer Purchase Order Final Installation Site 7 2 Meter Data SWO Job Number for spool piece Output Meter Factor p m p ft Further details of the meter is given in the Product Identification PRD 0000022541 6 PRD 0000022557 Rev 00G Page 21 of 32 MNKSO13 0 1 10 09 MC MPU Flow Calibration Procedure Technologies 7 3 Cali
14. ect Data se eN ie N du rn N Gn i 21 ad E EE EE ee ee ee 21 7 3 Calibration Data ME 22 ZA Flow Test POINTS isiin M 23 7 5 Additional Equipment Data ciae coni nandi an EN eed AA oe dn ia cnn 24 8 FLOW TEST EVALUATION esse sk ei wes eg eb ek NA RI RUE RE bek GN Ge ke bel aa 25 9 CONCLUSION m 27 10 APPENDIX sesse tud raus incon oe edant qiiae 28 PRD 0000022557 Rev 00G Page 3 of 32 MNKSO13 0 1 10 09 e MIC MPU Flow Calibration Procedure Technologies 1 INTRODUCTION This document describes the flow test procedure of the MPU Series B ultrasonic gas flow meter The ability of the meter to measure the correct gas flow rate is the functional characteristic to be tested There are limitations at the flow test facility regarding pressure and temperature variations The conditions at the test facility may differ from the operational conditions but the meter is zero calibrated for both the test conditions and the operating conditions The flow test result will be presented in a flow calibration certificate for each meter issued by the flow test facility The deviation between the measured gas volume flow and the reference measurement shall be within the required limits If not further investigation is needed 1 1 Equipment Required An MPU ultrasonic gas flow meter with zero calibrated transducers If applicable required upstream and
15. in a loop the possibilities for varying the pressure and the temperature of the gas are limited Gas turbine meters will be used as reference meters Details of the reference meters related temperature and pressure transmitters and the resulting uncertainty will be enclosed in the calibration certificates issued by CEESI Iowa Calibrations are performed in accordance with the American Gas Association Transmission Committee Report Number 9 using calibration standards that are traceable to the National Institute of Standards and Technology Each test point comprises the following 1 120 second count of turbine meter output frequency 2 Pressure and temperature readings during each run Gas volume flow measurements can be transmitted from the MPU to the reference system using RS485 communication The flow rate at the reference turbine meter is converted to the conditions prevailing at the ultrasonic flow meter using ratios of pressure temperature and real gas properties Data supplied to client may include the reading from the clients meter the volumetric flowrate from the reference system the meter calibration factor for each flow rate and the FWME Flow od pr er a ME N J0 usm EL t H M nte aa Pr n rm CIV308 Weighed Mean Error for the complete Calainn Bi calibration Page 30 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B APPENDIX Ultrasonic Gas Flow
16. ional Upstream Adapter Spool Length flange connections inside diameter 5 Optional Downstream Adapter Spool Length flange connections inside diameter 6 Optional Flow Conditioner Type 7a Pressure Transmitter Alternative 1 Type tapping 7b Pressure Transmitter Alternative 2 Type tapping 8 Temperature Transmitter Type element tapping Page 24 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B FLOW TEST Ultrasonic Gas Flow Meter EVALUATION 8 FLOW TEST EVALUATION Flow Meter Identification Serial Tag Number AGA 9 AGA 9 Small Meter 12 Large Meter gt 12 NPD Accuracy 1 0 Q20 1Qmax spec 10 796 Q20 1 Qimax spec 1 5 1 4 Q lt 0 1Qmax spec 1 4 Q lt 0 1Qmax spec v gt 1 5m s Linearity 1 0 Q20 1 Qmax spec 0 7 Q20 1Qmax spec 1 096 Band 1 496 Q 0 1Q s pec 1 496 Q lt 0 1Qmax spec v gt 1 5m s Repeatability 0 2 Q20 1 Qmax spec 0 2 Q20 1 Qmax spec 0 2 0 4 Q lt 0 1 Qinax spec 0 4 Q lt 0 1 Qinax spec v gt 1 5m s Using the table above are the calibration results Accuracy O Yes O No inside the requirements Linearity O Yes O No Repeatability O Yes O No What kind of calibration curve should be O None o FWME implemented O Multipoint O Ax B Using theoretical calculations is the deviation O Yes from the reference less than the specified limit while the calibration curve is implemented o No
17. ltrasonic Gas Flow Meter TEST SET UP The Figure 2 below shows a typical block diagram of the test set up for one MPU Pressure and temperature readings will be done both at the location of the reference meter and at the location of the MPU Flow measurements from the reference meter and of the MPU will be recorded simultaneously and compared to calculate the deviations Reference Measurement Computer Optional or Flow Pressure Temperature Pulse input from MPU lt 5 RS485 input from MPU PC with MPU WinScreen Ethernet RS 485 A Electronics P Alt 1 SiteInet Pe T eens La Gas Flow MPU Meter 0 Test Site Control Room Alt 2 Flow Control Valve Site Outlet Figure 2 Block diagram of the test set up PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 Downstream Spool Gas Flow Page 9 of 32 d MIC MPU Flow Calibration Procedure Technologies 3 HARDWARE INSPECTION AND INSTALLATION A m Domo Check that there is no damage on the meter or piping from transportation If this is the case FMC Kongsberg must be notified immediately and the damage must be documented and photographed Check that pressure test certificates are available for the MPU and up and downstream piping Check the inner diameters at each end of the spools upstream and downstream of the MPU Note the resu
18. lts in the table in Chapter 7 5 Install the MPU with corresponding pipes and if applicable flow straightener mechanically The installation must be done in accordance with general procedures for the task Install the cables between the meter and the control room in safe area and connect all wires Check that the junction boxes are properly closed to prevent water intrusion Check that reference instrumentation is properly installed Place the PC for logging the MPU measurements in house in safe area Do not switch power on until cable installation and safety grounding is verified and allowance is given by the test site operator Page 10 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B INITIAL CHECKING Ultrasonic Gas Flow Meter This page is intentionally left blank PRD 0000022557 Rev 00G Page 11 of 32 MNKSO13 0 1 10 09 e MC MPU Flow Calibration Procedure Technologies 4 INITIAL CHECKING The initial checking is done for the MPU and must be performed by competent and qualified personnel A Verify cable installation and protective grounding B Before applying power to the pulse loop check that the current through the pulse loop is limited by a resistor or internal circuitry in the reference system or flow computer If in doubt unplug the pulse output cable on the meter and measure the current through the loop with a multi meter If the current is higher than 10 mA a resistor needs to be i
19. n spec 5 3 Flow Test Documentation This test procedure completed with results Calibration certificates from the test site Print out of database values verified by FMC Contractor 5 4 Post Test Procedure A Dismount the test equipment B Prepare the MPU for delivery by preserving and packing the MPU in accordance with USM 0000020565 User Manual MPU Series B 7 PRD 0000022557 Rev 00G Page 15 of 32 MNKSO13 0 1 10 09 JS RC x MPU Flow Calibration Procedure Technologies 6 ACCEPTANCE CRITERIA 6 1 Acceptance Criteria for the MPU according to AGA 9 6 1 1 Accuracy The accuracy before flow calibration shall be according to Large Meter Accuracy or Small Meter Accuracy as stated below The uncertainty of the reference measurement of the volume flow must be taken into account when evaluating this point The uncertainty of the reference measurement will be documented in the calibration certificates The average error on each flow rate is used to calculate the accuracy Large Meter Accuracy Requirements NOTE UMs of 12 nominal diameter size and larger shall meet the following flow measurement accuracy requirements prior to making any calibration factor adjustment Maximum Error 0 7 for Qi Qi Qmactest Ref AGA 9 Ch 5 1 1 4 for Qmin tes Qi Qt where Q lt 0 1 Qinax spec Ref definition of Qmax spec in section Fehler Verweisquelle konnte nicht gefunden werden
20. nserted in the loop SkOhm A high current through the pulse output will cause permanent damage to the UDSP board C Switch the power on D Establish contact with the PC and start the WinScreen program Check the signals for all paths E Perform flow system tests to verify that the MPU is working satisfactory Page 12 of 32 PRD 0000022557 Rev 00G MNKSO13 0 1 10 09 MPU Series B INITIAL CHECKING Ultrasonic Gas Flow Meter This page is intentionally left blank PRD 0000022557 Rev 00G Page 13 of 32 MNKSO13 0 1 10 09 T MC x MPU Flow Calibration Procedure Technologies 5 FLOW TEST 5 1 Flow Test Description Project specific details for this flow test are given in Section 0 The flow meter shall be flow calibrated at an accredited gas flow calibration facility See list of various facilities in Appendix 1 The test below is performed for a predefined set of flow velocities Each run has a fixed duration typically 100 seconds and the same nominal flow rate will be repeated a number of times typically 3 to 5 times The flow calibration is done by the calibration facility based on the flow rate from the pulse frequency output of the meter The average flow rate from the MPU is compared with the reference measurements converted to the same conditions Pressure Temperatue as the MPU At each run at each flow rate the error is found in 9 During the complete flow calibration the Winscreen shall be logging
21. of said specifications should verify from the manufacturer that the Specifications are currently in effect Otherwise the manufacturer assumes no responsibility for the use of specifications which may have been changed and are no longer in effect Contact information is subject to change For the current contact information visit our website at www fmctechnologies com measurement and click on the Contact US link in the left hand column Headquarters 500 North Sam Houston Parkway West Suite 100 Houston TX 77067 USA Phone 1 281 260 2190 Fax 1 281 260 2191 Gas Measurement Products Liquid Measurement Products Beijing China 86 10 6500 2251 Erie PA USA 1 814 898 5000 Erie PA USA 1 814 898 5000 Singapore 65 6861 3011 Ellerbek Germany 49 4101 3040 Ellerbek Germany 49 4101 304 0 Chennai India 91 44 450 4400 Thetford England 44 1842 82 2900 Los Angeles CA USA 1 310 328 1236 Kongsberg Norway 47 32 286 700 Slough England 44 1753 57 1515 Buenos Aires Argentina 54 11 4312 4736 Barcelona Spain 34 93 201 0989 Integrated Measurement Systems Moscow Russia 7 495 564 8705 Corpus Christi TX USA 1 361 289 3400 Melbourne Australia 61 3 9807 2818 Kongsberg Norway 47 32 28 67 00 San Juan Puerto Rico 1 787 772 8100 United Arab Emirates Dubai 971 4 883 0303 Visit our website at www fmctechnologies com measurementsolutions Printed in U S A 9 08 FMC Technologies Meas
22. r to the meter without permission from the test site operator 1 4 Abbreviations Abbreviation Description AGA American Gas Association FAT Factory Acceptance Test HES Health Environment and Safety MPU MultiPath Ultrasonic NPD Norwegian Petroleum Directorate PRD 0000022557 Rev 00G Page 5 of 32 MNKSO13 0 1 10 09 T MC MPU Flow Calibration Procedure Technologies 1 5 Abbreviation Description PC Personal Computer STDEV Standard Deviation VOS Velocity Of Sound Responsibility The FMC representative is the test coordinator The FMC representative will cooperate with the appointed test site operator and the Contractor in order to perform the flow test NOTE FMC is not liable for availability of gas flow or problems at the test site on the day of the calibration If deviations from this procedure are required this must be agreed upon first between the Contractor and FMC second between the test site and FMC All work is performed in accordance with relevant Health Environment and Safety HES regulations Relevant parts of FMC Kongsberg Metering HES manual and pressure test manual will be followed FMC is responsible for all equipment delivered by FMC Kongsberg Metering regarding both high pressure and hazardous area related aspects The test site is responsible for their part of the test loop regarding both high pressure and haz
23. tails of the reference meters related temperature and pressure transmitters and the resulting uncertainty will be enclosed in the calibration certificates issued by Advantica Secondary instruments are calibrated and traceable to National standards Each test point comprises the following 1 100 second count of turbine meter output frequency 2 10 off readings of pressure and temperatures each set taken every ten second The pressures and temperatures are averaged and used with the turbine average frequencies to calculate the reference flow rates Gas samples will be taken during the course of the test The flow rate at the reference turbine meter is converted to the conditions prevailing at the ultrasonic flow meter using ratios of pressure temperature and compressibility Compressibility is calculated using the AGA 8 1992 equation The gas analysis needed for the compressibility calculations is obtained using an on line gas chromatograph Danalyser Quality assurance of the test site NAMAS Accreditation Complies with relevant requirements of the BS EN ISO 9000 series of standards Page 28 of 32 PRD 0000022557 Rev 00G MNKS013 0 1 10 09 MPU Series B APPENDIX Ultrasonic Gas Flow Meter Appendix 1 Reference Instrumentation Pigsar Dorsten Germany Selected amounts of natural gas from the Ruhrgas natural gas pipe system is lead through the test site As the gas passes the test site not in a loop the possibilities for
24. ue of these and calculate the difference between them This is called the peak to peak error PRD 0000022557 Rev 00G Page 17 of 32 MNKSO13 0 1 10 09 T MC x MPU Flow Calibration Procedure Technologies The calculation of repeatability and linearity will be performed by putting the recorded flow data with reference measurements and flow deviations into a prepared Excel file Large Meter Linearity Requirements NOTE UMs of 12 nominal diameter size and larger shall meet the following linearity requirements prior to making any calibration factor adjustment Maximum Peak to Peak Error 0 7 for Qi Qi Qmaxtest Ref AGA 9 Ch 5 1 1 4 for Qmin tet Qi Qt where Qi Q0 1Qmax spec Ref definition of Qmax spec in section Fehler Verweisquelle konnte nicht gefunden werden Small Meter Linearity Requirements UMs less than 12 nominal diameter shall meet the following linearity requirements prior to making any calibration factor adjustment Maximum Peak to Peak Error 1 0 for O Qi Qmactest Ref AGA 9 Ch 5 1 3 1 4 for Qmin tet Qi Qt where Q lt 0 1 Qinax spec Ref definition of Qmax spec in section Fehler Verweisquelle konnte nicht gefunden werden 6 1 4 Velocity of Sound AGA9 The MPU shall be able to measure the velocity of sound VOS with a variation between the paths of maximum 0 5 m s band The average measured velocity of sound shall not deviate from externally cal
25. urement Solutions Inc All rights reserved PRD 0000022557 00G MNKS013 Issue Rev 0 1 10 09
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