Floscan FloNET Standard Flow Model - Manual (Page 28)

03/16/09 2000-086-00A
Example 1: Twin engine vessel with two, dedicated fuel tanks, (For single engine vessels with a
single tank, use either the Port or Starboard system calibration procedure in Example 1).
1
0
F
E
D
C
B
A
9
6
7
8
5
4
3
2
0%
+2%
+4%
+6%
+8%
+10%
-2%
-4%
-6%
-8%
-10%
-12%
-14%
-16%
-18%
-20%
BLACK Switch
After steaming and returning to refuel. The Port tank took 89.7 gallons, (339.5 liters). It’s
totalizer reads 94.2 gallons, (356.5 liters). The Starboard tank took 93.2 gallons, (352.8 liters) and
its’ totalizer reads 87.9 gallons, (332.7 liters).
• Using the formula, calculate the percentage difference between the totalizer reading and
actual fuel consumption.
x 100
Totalizer Reading
Difference in Gallons, (Liters)
Port System Calibration
• Find the difference between the totalizer and fuel pump readings:
[94.2 gallon, (356.5 liter) totalizer reading] – [89.7 gallon, (339.5 liter) pump reading] = 4.5 gallon, (170.3 liter) difference.
• Determine percentage difference between readings:
Higher
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[4.5 gallon, (17.0 liter) difference] ÷ [94.2 gallon, (356.5 liter) totalizer reading] = .047 x 100 = 4.7% difference.
• To calibrate, rotate the Port FloNET’s Black Switch counter-clockwise to position “E”, reducing the totalizer reading by 4%.
Starboard System Calibration
• Find the difference between the totalizer and fuel pump readings:
[93.2 gallon, (24.4 liter) fuel pump reading] – [87.9 gallon, (332.7 liter) totalizer reading]= 5.3 gallon, (20.1 liter)
difference.
• Determine percentage difference between readings:
(5.3 gallon, (20.1 liter) difference) ÷ (87.9 gallon, (332.7 liter) totalizer reading) = .060 x 100 = 6% Lower difference.
• To calibrate, rotate the Starboard FloNET’s Black Switch clockwise to position “3”, increasing the totalizer reading by 6%.
Example 2: Twin engine vessel with a single fuel tank.
Port System Calibration
After refueling the tank took 182.9 gallons, (692 liters). The Port Totalizer reads 94.2 gallons, (356.6 liters) and the Starboard reads
87.9 gallons, (332.7 liters). With a single tank, you must assume that each engine burned 91.5 gallons, (346.3 liters).
• Find the difference between the totalizer and fuel pump readings:
[94.2 gallon, (356.5 liter) totalizer reading] – [91.5 gallon, (346.3 liter) assumed burn) = 2.7 gallon, (10.2 liter) difference.
• Determine percentage difference between readings:
[2.7 gallon, (10.2 liter) difference) ÷ [94.2 gallon, (356.5 liter) totalizer reading) = .028 x 100 = 2.8% Higher difference.
• To calibrate, rotate the Port FloNET’s Black Switch counter-clockwise to position “F”, reducing the totalizer reading by 2%.
Starboard System Calibration
• Find the difference between the totalizer and fuel pump readings:
[91.5 gallon, (346.3 liter) assumed burn] - [87.9 gallon, (332.7 liter) totalizer reading] = 3.6 gallon, (13.6 liter) difference.
• Determine percentage difference between readings:
[3.6 gallon, (13.6 liter) difference] ÷ [87.9 gallon, (332.7 liter) totalizer reading] = .041 x 100 = 4.1% Lower difference.
• To calibrate, rotate the Starboard FloNET’s Black Switch clockwise to position “2”, increasing the totalizer reading by 4%.
This completes system calibration. The FloNET readings should be within 5% of actual consumption. Calibrating a second time
should bring it to within 3%, especially on twin engine, single tank vessels. Larger fuel burns increase calibration accuracy.
Drastically changing operating habits (i.e. changing from mostly cruising to mostly trolling) may affect totalizer accuracy. If this
occurs re-calibration may be necessary.