Fluid Components International FR73B Manual Operation - Manual (Page 2)

FLUID COMPONENTS INTL CHAPTER 3 - OPERATION
Model FR78B Flow Switch/Monitor 3 - 2 Doc. No. 06EN003281 Rev. -
Creating a Calibration Curve Using an FM71 Calibrator
1. Apply power to the instrument and establish a constant flow rate in the pipe for the first data point to be taken.
Let the instrument stabilize for 10 minutes.
2. Attach an FM71 meter to the control circuit. Dial in the balance number found near the edge of the control
circuit. The read out /calib. switch should be in the read out position. Record the flow rate versus the meter
readout.
3. Repeat steps 1 and 2 at different flow rates. Record enough flow points to be able to make a millivolt versus
flow curve.
To set a switch point, use the instructions that come in the FM71 manual.
Figure 3-2. Control Circuit 5181 Outline Drawing
Figure 3-1. Setting Alarm Switch Points