310531 29
Configuring the PrecisionFlo Module
Fig. 22
Kd + 100
Yes
Bead unstable?
Kd –100
Kd +20
No
Bead unstable?
No
Kd – 20
Yes
Done
Set Kd
From
Adjust
Kp
1
2
3
4
Adjust Kp and Kd Values
Visually (continued)
Set Kd
(Visually)
Refer to the chart in Fig. 22 for more information. The
1
corresponds to the steps in this procedure.
1.
After you have adjusted Kp, examine the most
recent test bead and see if it has any waves in it
after a change in bead width.
2.
If no waves exist, increase Kd by 100 and dis-
pense another test bead. Repeatedly increase Kd
and retest until a wave appears after a width
change, to indicate unstable performance
(Fig. 20).
3.
Reduce Kd by 100 and resume adjusting upward
by increments of 20 and retesting until the wavi-
ness or instability appears again.
4.
Decrease Kd to the last previous setting.
5.
Reconnect the electrical cable to the flow meter.
The adjustment procedure is complete and the module
is set for optimum performance with the current materi-
al and module configuration.