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FMC Technologies Smith Meter AccuLoad, Руководство по испытанию танка

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Section VII – Appendix 

 

MN06146 Issue/Rev. 0.1 (7/10) 

15

 
 
 

 

 
 
 
 
 

0  10 20 30  40 50  60 70  80 

9

0 100 110 120

Temperature ˚F

Tank Prover Steel Correction Factor for Temperature

Appendix B

V

olumetric Correction F

actor

304

Stainless

Steel

Mild Steel

0.

99

80

0.

99

85

0.

999

0

0.

999

5

1.0000

1.0005

1.0010

1.0015

Содержание Smith Meter AccuLoad

Страница 1: ...The Most Trusted Name In Measurement Electronic Preset Delivery System Smith Meter AccuLoad Tank Proving Guide Bulletin MN06146 Issue Rev 0 1 7 10 ...

Страница 2: ...ing system is unique and each program parameter must be reviewed and programmed for that specific metering system application 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 connecti...

Страница 3: ...Requirements 3 Section III Flow Rate Selection 4 Section IV Factor Selection for Preliminary Proving 5 Establishing Factor New Meter 5 AccuLoad I 5 Remember the Rules 6 AccuLoad II and AccuLoad III 6 Remember the Rules 7 Reproving the Meter 7 Section V Factor Optimizing 8 AccuLoad I 10 AccuLoad II 11 Section VI AccuLoad III Automated Proving Mode 12 Automated Proving Mode 12 ...

Страница 4: ......

Страница 5: ...omatically switch to a unique calibration factor for each of the four differ ent flow rate ranges thus linearizing the meter out put When initially proving an AccuLoad I system lock in each flow rate and determine a calibration factor for each These calibration factors are then programmed into the AccuLoad and typical flow runs are executed including normal low flow start high flow and multi step ...

Страница 6: ...ogram mode for each product and me ter factor Appendix includes a Meter Proving Report form and a Tank Prover Steel Correction Factor for Tem perature chart The examples presented in this manual are for clari ty and convenience The values will vary from one particular installation and or operation to another Before Beginning to Prove Be sure that the AccuLoad is functioning properly and that the o...

Страница 7: ...t 15 20 psig for gasoline For a positive displacement meter 5 psi plus vapor pressure e g about 0 5 psig for gaso line is sufficient Back pressure may be a problem at the maximum flow rate if system pressure loss downstream of the meter is quite low This is most likely to occur particularly in a turbine meter system if the set stop valve goes to a wide open position i e is not controlling flow Wit...

Страница 8: ...Second High Flow Rate Only used for loading smaller tanks where Q1 would be too high a rate Q3 Low Flow Start Flow Rate To minimize splash ing and or foaming within the truck tanks Q4 Minimum Flow Rate Flow rate during the final stage of loading To reduce proving time and still retain most of the improved accuracy obtainable with meter lineariza tion proving may be limited to just two flow rates Q...

Страница 9: ...llon If only the nominal pulses per unit volume figure is known e g 25 use this value for the Input Resolu tion Setting Use 1 0000 for the Calibration Factor Setting AccuLoad I or for the Meter Factor AccuL oad II and AccuLoad III AccuLoad I The values programmed into an AccuLoad in order to match the AccuLoad to a particular meter are of two types 1 Input Resolution This produces a coarse ad just...

Страница 10: ...t meter factors for each product but only one in put resolution setting as a function of flow rate which are used to linearize the meter s calibration curve Example 3 AccuLoad II Four inch turbine meter with a K factor of 25 327 pulses per gallon 1 Select the nearest whole number to 25 327 which is 25 This becomes the Input Resolution Setting 2 Divide 25 by 25 327 to determine the Meter Fac tor Se...

Страница 11: ... of allowable Input Resolution Settings is 0 to 9 999 pulses per whole unit of display i e gallons liters etc on the AccuLoad II and 0 to 99999 999 on the AccuLoad III 3 The range of allowable Meter Factor Settings is 0 0001 to 9 9999 for the AccuLoad II and 0 00001 to 9 99999 for the AccuLoad III Realis tic Meter Factors would be between 0 85 and 1 25 Reproving the Meter If reproving the system u...

Страница 12: ...econd High Flow Switch is used make certain the switch is in First High Flow Position Q1 3 Preset Tank Prover Volume 4 Press Start to fill prover Step 3 Wet down the prover and stabilize the temperature of the meter prover system Fill and drain the prover once or twice until the measured liquid temperatures at meter and prover are equal within 1 to 2 F Also confirm that excessive splashing or foam...

Страница 13: ...onding flow rates into the proper AccuLoad entries for a typical delivery Step 8 Reprogram the AccuLoad to obtain the factor at Q2 1 Set the Low Flow Start Volume at a value at least 5 greater than the tank prover volume 2 Set the Low Flow Start Rate at the Q2 flow rate Leave the factor for Q1 in Factor Number 1 Step 9 Same as Step 4 except at Q2 Step 10 Same as Step 5 except at Q2 Step 11 Same as...

Страница 14: ...on between the average values of the AccuLoad volumes and the tank prover volumes recorded in Steps 25 and 26 1 Verify that the factors that have been entered are correct 2 Verify the proving procedures 3 Adjust the factor for Q1 the amount needed to ob tain perfect agreement The factor for Q1 obtained in Steps 1 7 is subject to a slight error due to the significant start up and shut down transien...

Страница 15: ...ew 9844 0 Factor New Example 2 Over Registration 4 Total Volume Delivered at Q1 80 Old Factor 0 9849 New Factor 05 0 80 0 04 0 Decrease Factor 0 9995 Factor Old Factor New 0 9995 9849 0 Factor New 9854 0 Factor New Step 28 Repeat Steps 24 25 26 and 27 if necessary with the new factor value for Q1 Flow Rate Step 29 Do only if Second High Flow Switch is used Repeat Steps 24 25 and 26 except set the ...

Страница 16: ...or this entry will be displayed If this value is ac ceptable the operator need only press ENTER Enter Prover Coefficient 0 000186005 11 03 99 12 24 36 4 The AccuLoad III will prompt for the low flow start volume If low flow start is not desired enter zero Press ENTER Enter Low Flow Start Volume 100 Gal 11 03 99 12 25 37 5 Next the AccuLoad III will display the Select Recipe prompt If in remote con...

Страница 17: ...If REJECT or SAVE is selected the AccuLoad III will return to the Run Mode display where the transaction can be ended If AVERAGE is se lected the AccuLoad III will then average all me ter factors in the buffer up to ten of them The average meter factor will be displayed Select SAVE to store the average meter factor into the Program Mode Average Meter Factor 0 98400 Continue Save 14 If Save is sele...

Страница 18: ...Section VII Appendix MN06146 Issue Rev 0 1 7 10 14 ...

Страница 19: ...5 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature F Tank Prover Steel Correction Factor for Temperature Appendix B Volumetric Correction Factor 3 0 4 S t a i n l e s s S t e e l M ild Steel 0 9980 0 9985 0 9990 0 9995 1 0000 1 0005 1 0010 1 0015 ...

Страница 20: ... information visit our website at www fmctechnologies com measurementsolutions 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 Measurement Products and Equipment Erie PA USA 1 814 898 5000 Ellerbek Germany 49 4101 3040 Barcelona Spain 34 93 201 0989 Beijing China 86 10 65...

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