FMC Technologies Smith Meter AccuLoad, Tank Proving Manual

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Section V – Factor Optimizing
MN06146 Issue/Rev. 0.1 (7/10) 9
MF Average
CF Original
CF New

Example: Original Calibration Factor = 1.0150
Meter Factor = 0.9997 (average)
0153 . 1
0.9997
1.0150
CF New
 
Enter 1.0153 into the AccuLoad Calibration Factor
Number 1 and record as Calibration Factor (CF) for
Q
1
.
Step 6 (AccuLoad II and III Only)
Compute and enter the new Calibration Factor (CF)
at Q
1
:
MF Average MF Original MF New
 
Example: Original Calibration Factor = 0.9852
Meter Factor = 0.9997 (average)
New MF = 0.9852 x 0.9997 = 0.9849
Enter the new Meter Factor (MF) into the AccuLoad
at Meter Factor Number 1 and record as Meter Factor
(MF) for Q
1
.
Step 7
Verify factor at Q
1
. Make at least one additional run to
verify accuracy.
Note: Factors 2, 3, and 4 will all be determined using the low flow
start rate as the proving run flow rate with Q
1
as the associated fac-
tor for all flow rates at which the meter is to be proved. After de-
termining and recording all the factors, they will then be entered,
along with their corresponding flow rates, into the proper AccuLoad
entries for a typical delivery.
Step 8
Reprogram the AccuLoad to obtain the factor at Q
2
.
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 Q
2
flow rate.
Leave the factor for Q
1
in Factor Number 1.
Step 9
Same as Step 4, except at Q
2
.
Step 10
Same as Step 5, except at Q
2
.
Step 11
Same as Step 6, except at Q
2
.
Step 12
Same as Step 7, except at Q
2
.
Step 13
Reprogram the AccuLoad to obtain the factor at Q
2
.
Set the Low Flow Start Rate at the Q
3
flow rate.
Leave the factor for Q
2
in Factor Number 1.
Step 14
Same as Step 4, except at Q
3
.
Step 15
Same as Step 5, except at Q
3
.
Step 16
Same as Step 6, except at Q
3
.
Step 17
Same as Step 7, except at Q
3
.
Step 18
Reprogram the AccuLoad to obtain the factor at Q
4
.
Set the Low Flow Start Rate at the Q
4
flow rate.
Leave the factor for Q3 in Factor Number 1.
Step 19
Same as Step 4, except at Q
4
.
Step 20
Same as Step 5, except at Q
4
.
Step 21
Same as Step 6, except at Q
4
.
Step 22
Same as Step 7, except at Q
4
.
Step 23
Linearization programming. Once the factors for Q
1
,
Q
2
, Q
3
, and Q
4
have been determined, the AccuLoad
may now be set up for a typical delivery.