DF4000 Rev0204
27
Flow Calibration, Multiple Point (Code 322)
This function allows for the display to be calibrated at multiple flow rates. It
corrects for nonlinear flow in difficult to plumb locations to provide an accurate flow
rate display.
Select flow rates to calibrate (up to 10 calibration points) that are within the most
commonly used flow range for the discharge. Start at the lowest flow rate and calibrate
in order up to the hightest.
Note:
There must be at least a 5% difference between each calibration point.
If a selected calibration point is too close to the previous point an E206
error code will show on the display.
1. Enter code 322.
Result: The digital display will show
Pt1
(the flowmeter program is ready to
set the first calibration point).
2. Flow water through the discharge at the flow rate selected for the calibration
point. Ensure a constant pressure is maintained to obtain a steady flow rate.
3. Press the
MODE
button.
Result: The display will show a flow rate with the last digit flashing.
4. Adjust the displayed flow rate to match the reference flow rate.
Use the
MODE
button to select the digit that is to be changed. The digit will
flash.
Use the
TOTAL
button to change the value of the flashing digit.
5. Press both the
MODE
and
TOTAL
buttons, release the buttons when the next
calibration point is displayed. (If the buttons are pressed too long the program
will exit the calibration mode).
Result: The display will show
Pt2
(or the next calibration point).
6. Repeat steps 2 through 5 for each flow rate to be calibrated.
7. To exit the calibration program:
Press both the
MODE
and
TOTAL
buttons and hold them until four dashes
are shown in the display. Release the buttons and enter a new code or after 3
seconds the program will timeout and return to normal operation.
