TLS Console Setup for MAG-XL Flex Probe
Vertical Tank Volume Calibration
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Vertical Tank Volume Calibration
Enter the full tank volume based on the volume specification provided by the tank manufacturer referred to as the
nominal tank volume in the following examples. If a vertical tank’s volume to height ratio is known, use the most
precise full tank volume available and enter that volume into the TLS Console.
Over time, calibrate the tank’s volume by comparing volume from each delivery ticket to the delivery volumes
recorded by the TLS Console. Use several deliveries to calculate the average volume error (as a percentage of the
total volume). The calculated tank volume is an adjustment to the full tank volume based an average of the delivery
volumes. On the TLS Console, adjust the full tank volume to compensate for this error as demonstrated in
examples 1 and 2 in Figure 19 below using the calculated tank volume as the new full tank volume.
Figure 19. Volume calibration examples
Example 1 - Manual Tank Calibration for a Positive Error
Nominal Tank Volume: 125,000
Calculated Tank Volume: 115,925
D1
D2
D3
D4
D5
Metered Volume Delivered (Input)
2,774
3,812
2,344
2,802
1,699
Delivery Volume Reported by TLS
2,985
4,062
2,525
2,981
1,835
Volume Difference (positive error)
7.61%
6.55%
7.73%
6.39%
8.00%
Average of the Volume Difference
7.26%
(125,000 x .0726 = 9,075)
Adjust the tank volume downward by this Difference: Nominal Tank Volume minus 9,075
Calculated Tank Volume 125,000 - 9,075 = 115,925
Example 2 - Manual Tank Calibration for a Negative Error
Nominal Tank Volume: 500,000
Calculated Tank Volume: 547,050
D1
D2
D3
D4
D5
Metered Volume Delivered (Input)
4,772
3,650
5,391
4,446
4,822
Delivery Volume Reported by TLS
4,363
3,259
4,923
3,980
4,408
Volume Difference (negative error)
-8.58%
-10.71%
-8.68%
-10.49%
-8.59%
Average of the Volume Difference
-9.41%
(500,000 x .0941 = 47,050)
Adjust the tank volume upward by this Difference: Nominal Tank Volume plus 47,050
Calculated Tank Volume 500,000 + 47,050 = 547,050
Into the Tank Deliveries
Into the Tank Deliveries
972-14.e
ps
