FMC Technologies Smith Meter AccuLoad, Tank Proving Manual

Page: 15 / 20

Section V – Factor Optimizing
MN06146 Issue/Rev. 0.1 (7/10) 11
New Factor = Old Factor
×
1.0005
New Factor = 1.0153 × 1.0005
New Factor = 1.0158
Example 2
Under Registration = 4%
Total Volume Delivered at Q
1
= 80%
Old Factor = 1.0153
New Factor = ???
% 05 . 0
80 . 0
04 . 0
Decrease Factor
 
New Factor = Old Factor
×
0.9995
New Factor = 1.0153 × 0.9995
New Factor = 1.0148
AccuLoad II
The amount to decrease the factor for Q
1
to obtain
perfect agreement between the AccuLoad II volume
and the prover volume equals the percent (%) total
over registration divided by the proportion of the total
volume delivered at Q
1
.
Example 1
Over Registration = 4%
Total Volume Delivered at Q
1
= 80%
Old Factor = 0.9849
New Factor = ???
% 05 . 0
80 . 0
04 . 0
Decrease Factor
 
1.0005
Factor Old
Factor New

1.0005
9849 . 0
Factor New

9844 . 0 Factor New

Example 2
Over Registration = 4%
Total Volume Delivered at Q
1
= 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 Q
1
Flow Rate.
Step 29
Do only if Second High Flow Switch is used. Repeat
Steps 24, 25, and 26, except set the switch for
Second High Flow Rate.
Step 30
1. Return to Normal Run Mode (set Proving Mode to
0, “Not Proving”).
2. Record all data and notes while they are still
fresh in your mind.
3. Be sure all Command Code settings and factors
are recorded. Use the appropriate “Programming
Workbook,” available for download at no cost at
www.fmcmeasurementsolutions.com (AccuLoad
I and II), or the AccuMate file for recording para-
meter values (AccuLoad III). File this information
with the terminal manager. The terminal manager
should also keep records of the proving data.