Manual

Calibration ❑

CAFSPro User Operation Manual

p/n: 029-0020-75-0

Note - continued: Hand held Pitot gauges are usually not very accurate. Make

sure the system is calibrated with an accurate flow measuring device.

1. Determine the water flow normally expected from the discharge outlet

and establish flow.

2. Make sure the water flow established is within the range of the flow sen-

sor monitoring the discharge.

3. For example, actually establish a flow of 150 GPM (568 LPM) of water

through a nozzle and Pitot system. Compare the calculated flow value

to the value shown on the control unit digital display.

4. Read Pitot nozzle pressure. Regulate the discharge until nozzle pres-

sure is 70 to 72 PSI (4.8 to 5 BAR).

5. Press the  or  pad on both the CAFSPro and FoamLogix displays to

set the reading on each display to match the actual flow calculated from

the Pitot gauge reading.

6. Decrease fire pump pressure by approximately 1/2 and recalculate

water flow rate.

7. Verify that the reading on the control units is within 5% of the actual

value.

8. Decrease the throttle and stop the water flow when the reading adjust-

ments are completed.

Record Water Flow Sensor Calibration Factors

On each display, one at a time, press and release the DISPLAY (i) pad.

The display shows Fxx.x, which is the water flow sensor calibration factor.

(See Figure 8-4: ‘Sample CAFSPro Display Readouts -2’ on page 64.)

Record this value for future reference. This factor is programmable should

the display require replacement.

CAFSPro WATER FLOW SENSOR

CALIBRATION FACTOR: __________________________________

FOAMLOGIX WATER FLOW SENSOR

CALIBRATION FACTOR: __________________________________