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- Page 1 Electronic Preset Delivery System ® ® Smith Meter AccuLoad Tank Proving Guide Bulletin MN06146 Issue/Rev. 0.1 (7/10) The Most Trusted Name In Measurement...
- Page 2 Disclaimer FMC Technologies Measurement Solutions, Inc. hereby disclaims any and all responsibility for damages, including but not limited to consequential damages, arising out of or related to the inputting of incorrect or improper program or default values entered in connection with the AccuLoad III.
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Page 3: Table Of Contents
Table of Contents Section I – Introduction .............................. 1 Introduction ................................1 AccuLoad I ................................1 AccuLoad II and III ............................. 1 How to Use This Manual ............................1 Before Beginning to Prove ............................. 2 Section II – System Pressure Requirements ......................3 Section III –... -
Page 5: Section I - Introduction
For the purpose of this document, the term “AccuL- agreed upon and understood by all parties con- oad I” will refer to the original Smith Meter AccuLoad cerned before meter proving operations begin. electronic preset, which was one electronic preset in one enclosure. -
Page 6: Before Beginning To Prove
Section I – Introduction “AccuLoad III Automated Proving Mode” describes a Before Beginning to Prove feature which allows the operator to prove the meter Be sure that the AccuLoad is functioning properly on all four products, with four meter factors and as- and that the operator has read and understands the sociated flow rates for each product, without having instructions contained in this manual. -
Page 7: Section Ii - System Pressure Requirements
Section II – Pressure System Requirements For accurate measurement, adequate back pressure downstream of the meter is quite low. This is most at the meter is required to prevent cavitation. For a likely to occur, particularly in a turbine meter system, turbine meter at its maximum rated flow, this will be if the set stop valve goes to a wide open position approximately 20 psi plus the vapor pressure of the... -
Page 8: Section Iii - Flow Rate Selection
Section III – Flow Rate Selection The flow rates typically selected for proving are the same as those used in the normal loading operation. : First High Flow Rate – Maximum Rate : Second High Flow Rate – Only used for loading smaller tanks where Q would be too high a rate : Low Flow Start Flow Rate –... -
Page 9: Section Iv - Factor Selection For Preliminary Proving
Section IV – Factor Selection for Preliminary Proving Before the actual calibration of the AccuLoad meter AccuLoad Volume Calibratio Factor (CF) system begins, it is necessary to program into the Tank Prover Volume instrument several parameters that apply uniquely to a given installation. -
Page 10: Remember The Rules
Section IV – Factor Selection for Preliminary Proving Remember the Rules 98708 1. The maximum input frequency direct from the meter accepted by the AccuLoad I 2,000 Hz. Round off to four places to the right of the decimal (because only five digits are allowed). -
Page 11: Remember The Rules
Section IV – Factor Selection for Preliminary Proving Remember the Rules Reproving the Meter 1. The maximum input frequency accepted by Ac- If reproving the system, use the factors already set cuLoad II directly from the meter is 3,000 Hz. into the AccuLoad and proceed to the next section, The maximum input frequency accepted by Ac- Factor Optimizing. -
Page 12: Section V - Factor Optimizing
Section V – Factor Optimizing Start at Q , the Maximum Flow Rate. Use the Input 4. Press “Start” to fill prover. Resolution Setting and Factor Setting determined previously. Use Smith Form “Meter Proving Report,” Step 3 which is Appendix A of this manual, or an equivalent Wet down the prover and stabilize the temperature of form to record all data. - Page 13 Section V – Factor Optimizing Step 9 Original Average Same as Step 4, except at Q Step 10 Example: Original Calibration Factor = 1.0150 Meter Factor = 0.9997 (average) Same as Step 5, except at Q 1.0150 Step 11 ...
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Page 14: Accuload I
Section V – Factor Optimizing Example: values for Q , and Q should be very precise since Maximum Delivery rate 700 gpm – Q the start-up and shutdown transients encountered Second High Flow Rate 400 gpm – Q there are negligible. Also, the volume delivered at Low Flow Start Rate 250 gpm –... -
Page 15: Accuload Ii
Section V – Factor Optimizing New Factor = Old Factor × 1.0005 Example 2 New Factor = 1.0153 × 1.0005 Over Registration = 4% New Factor = 1.0158 Total Volume Delivered at Q = 80% Old Factor = 0.9849 Example 2 New Factor = ??? Under Registration = 4% Total Volume Delivered at Q... -
Page 16: Section Vi - Accuload Iii Automated Proving Mode
Section VI – AccuLoad III Automated Proving Mode 5. Next, the AccuLoad III will display the "Select Automated Proving Mode Recipe" prompt. If in remote control communica- The AccuLoad III firmware provides an automated tions mode, only those recipes allocated will be proving mode of operation. - Page 17 Section VI – AccuLoad III Automated Proving Mode 9. When the batch has completed, the AccuLoad 13. If "REJECT" or "SAVE" is selected, the AccuLoad will prompt for the actual prover volume. Enter III will return to the Run Mode display where the the prover volume and press "ENTER."...
- Page 18 Section VII – Appendix MN06146 Issue/Rev. 0.1 (7/10)
- Page 19 Section VII – Appendix Tank Prover Steel Correction Factor for Temperature Appendix B 1.0015 1.0010 1.0005 1.0000 0.9995 0.9990 0.9985 0.9980 Temperature ˚F MN06146 Issue/Rev. 0.1 (7/10)
- Page 20 Singapore, +65 6861 3011 Buenos Aires, Argentina +54 (11) 4312 4736 Thetford, England +44 (1842) 822900 Burnham, England +44 (1628) 603205 Visit our website at www.fmctechnologies.com/measurementsolutions Printed in U.S.A. © 7/10 FMC Technologies Measurement Solutions, Inc. All rights reserved. MN06146 Issue/Rev. 0.1 (7/10)