FRC DFA400 - Flow Calibration, Multiple Point (Code 322)

DFA400 Rev150730
27
Flow Calibration, Multiple Point (Code 322)
This function is used when the ow sensor is installed in a difcult plumbing
location where ow is not linear. It corrects for nonlinear ow to provide an accurate
ow rate display.
Select calibration points (up to 9) that are within the most commonly used range.
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 shows on the display.
1. Enter code 322.
Result: The digital display shows Pt1 (program is ready to set the rst
calibration point).
2. Flow water through the discharge at the ow rate selected for the calibration
point. Ensure a constant pressure is maintained to obtain a steady ow rate.
3. Press the MODE button.
Result: The display shows ow rate with the last digit ashing.
4. Adjust the displayed ow rate to match the reference ow rate.
The MODE button selects the digit to change. The digit will ash.
The TOTAL button changes the value of the ashing digit.
5. Press and hold the MODE button, momentarily press the TOTAL button, release
the buttons. The next calibration point is displayed. (If the buttons are pressed
too long, the program exits the calibration mode.)
Result: The display shows Pt2 (or the next calibration point).
6. Repeat steps 2 through 5 for each ow rate to be calibrated.
7. To exit the calibration program:
Press and hold the MODE button and then press the TOTAL button and hold them
until the display shows four dashes. Release the buttons and enter a new code, or
after ve seconds the program times out and returns to normal operation.