FP4000 Rev0204
28
CALIBRATION
The INSIGHT ULTIMATE pressure gauge and digital flowmeter is precalibrated
and tested at the factory. Plumbing systems are always unique and may cause small
deviations in the factory calibration. The pressure gauge/flowmeter should be checked
after installation for accuracy and calibrated when necessary.
To calibrate the digital flowmeter use a precalibrated water flow test kit (connected
to the discharge according to the instructions provided with the test kit) or a pitot gauge
as a reference.
Review the Programming section for details on activating the three magnet sensors
M1, M2, M3, and procedures for using the Program Access Mode.
Note: The sensors are activated by placing the north pole of a small magnet
on the glass in close proximity to the sensor and then moving it 1-inch
away. This produces an electronic signal that is similar to a button being
released. If the digits in the display do not change try moving the magnet
further away from the sensor or turn the magnet around (the south pole
will not work).
Flow Calibration, Single Point (Code 321)
Select a flow rate to calibrate that is within the most commonly used flow range
for the discharge.
1. Enter code 321.
Result: The digital display will show the flow rate with the last digit flashing.
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. Adjust the displayed flow rate to match the reference flow rate.
Use the M1 sensor to select the digit to change. The digit will flash.
Use the M2 sensor to change the value of the flashing digit.
4. To exit the calibration program:
Touch the magnet on the glass at the M3 sensor and hold it there until four
dashes are shown in the display. Remove the magnet and after 3 seconds the
program will return to normal operation.
5. Vary the water flow through the discharge and ensure the displayed flow rate
matches the reference. If there are differences at other flow rates the multiple
point flow calibration may be necessary.