Omega FTB690 Serie Bedienungsanleitung Seite 5

Before Beginning Field Calibration
For the most accurate results, dispense at a
flowrate which best simulates your actual oper-
ating conditions. Avoid "dribbling" more fluid or
repeatedly starting and stopping the flow –
these actions will result in less accurate calibra-
tions.
Make sure you meet the meter's minimum
flowrate requirements:
FTB690 Series Meters
1/2 inch meter
3/4 inch meter
1 inch meter
1-1/2 inch meter
2 inch meter
For best results, the meter should be installed
and purged of air before field calibration.
Dispense/Display Field
Calibration Procedures
1. Hold down CALIBRATE while pressing and
releasing DISPLAY until the field calibration
curve appears ("CAL B" message will be
displayed). Release both buttons.
2. To calibrate, press and hold the CALI-
BRATE button. While continuing to
hold CALIBRATE, also press and hold the
DISPLAY button. Hold both buttons for about
3 seconds until you see a blinking "dd CAL"
message. Once the "dd CAL" message
appears, release both buttons. You are
now in field calibration mode.
3. Once the buttons have been releasedfrom
Step 2, the display will show the blinking
message "run 01". If you want to exit the
calibration now before dispensing any fluid,
go to Step 11.
4. If you want to continue with the calibration,
but have not dispensed any fluid yet, make
your final preparations to your pumping
system, but don't start pumping yet.
5. Start your pumping system so that fluid
flows through the meter. The display
will stop blinking and show the "run 01"
message. Dispense into a container that
allows you to judge the amount of fluid
pumped. When you have pumped the
desired amount (for example, 10 gallons),
stop the fluid flow quickly.
1 GPM (3.8 LPM)
2 GPM (7.5 LPM)
5 GPM (18.8 LPM)
10 GPM (37.85 LPM)
20 GPM (75 LPM)
6. Once the flow has stopped, briefly press
and release both buttons. At this point the
computer display will change to "0000.00"
with the left-hand digit blinking.
7. Enter the volume (amount) of fluid that you
dispensed (for example, if your 10-gallon
container is full, enter "10.0" for gallons
or "37.85" for litres). To enter numbers,
use the CALIBRATE button to change the
value of the digit that is blinking and use
the DISPLAY button to shift the "blink" to
the next digit.
8. Once the correct number is entered, briefly
press and release both buttons. The
display will now change to a blinking "run 02"
message. You have installed the new cal-curve
point. You are ready to end calibration (Step
10) or enter another new calibration point
(Step 9).
9. To enter another calibration point, go back
and repeat Steps 3 through 8. It is possible
to set up to 15 cal-curve points, and the
"run ##" message will increment each time
you repeat the calibration process (run 01,
run 02, run 03, etc., up to run 15).
10. To end calibration, press and hold both
buttons for about 3 seconds until you see
the "CAL End" message. After you release
the buttons the computer will resume nor-
mal operations with the new cal point(s)
active.
11. If you HAVE NOT dispensed any fluid, you
can exit calibration without changing the
cal curve. If the message "run 01" is showing
and you have not dispensed any fluid,
hold both buttons for about 3 seconds until
you see a "CAL End" message. After you
release the buttons, the computer will
resume normal operation and the old curve
(if you entered one in the past) is still intact.
MAINTENANCE
Proper handling and care will extend the life
and service of the meter.
Turbine Rotor
The meter is virtually maintenance-free.
However, it is important the rotor moves freely.
Keep the meter clean and free of contaminants.
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