DFA400 Rev150730
27
Flow Calibration, Multiple Point (Code 322)
This function is used when the ow sensor is installed in a difcult 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.
To Next Page
Loading...
Need help?
General
