Floscan TwinScan GPH/LPH Meter - Manual (Page 16)

9/19/2003 1000-148-00E
FloScan Instrument Company, Inc. Tel: (206) 524-6625 Fax: (206) 523-4961
3016 NE Blakeley Street, Seattle, WA 98105 Email: [email protected] Http://www.floscan.com
CALIBRATION
TwinScan
®
3” GPH Instrument
Gasoline and Diesel Engines
To ensure years of trouble free operation of your new GPH Meter,
please read all of these instructions carefully before beginning your installation.
Calibration and flow sensor selection of your TwinScan
®
3” GPH Instrument is done with the sixteen position rotary switches on the
back of the instrument. The RED switch is used for sensor type and pointer damping selection; the BLACK switch is used to calibrate
your instrument. It is critical that you set the sensor selection switch correctly. Before re-calibrating your instrument, note the current
position of the switch and check the calibration table for the correct flow sensor selection. Changing the totalizer calibration also
changes the analog needle calibration.
Re-calibration is required only if you find your totalizer reading to be more than 2% different from the actual fuel put into the tank.
Various things such as the attitude of the boat in the water, the amount of the fill up, and how full the tank is filled affect accuracy.
The larger the amount of fuel you base calibration on, the more accurate your system will be.
To check the calibration:
1. Fill the tank(s) and reset the totalizer to zero.
2. Operate the boat in a normal manner until you would ordinarily refuel.
3. Fill the tank(s) as close to the same level as possible. Check the amount of fuel the tank actually took as well as the amount the
totalizer shows you used. In most cases, these two amounts are within 2% of each other and no additional calibration is
required.
4. To change the calibration, rotate the BLACK switch on the back of the instrument until the totalizer reads as close to your
actual fill up as possible. If your reading is off by more than you can calibrate, go to the troubleshooting guide.
BLACK Switch Effect to Totalizer RED Switch Sensor Results
0 No Change 0 20B Light meter damping
1 +2% 1 20B Heavy meter damping
2 +4% 2 20B Light meter damping
3 +6% 3 20B Light meter damping
4 +8% 4 231 Light meter damping
5 +10% 5 231 Heavy meter damping
6 -20% 6 231 Light meter damping
7 -18% 7 231 Light meter damping
8 -16% 8 233C Light meter damping
9 -14% 9 233C Heavy meter damping
A -12% A 233C Light meter damping
B -10% B 233C Light meter damping
C -8% C w/diesel* Light meter damping
D -6% D w/diesel* Heavy meter damping
E -4% E w/diesel* Light meter damping
F -2% F w/diesel* Light meter damping
*TwinScan + MFI combination