Chapter Four: Operation External Set Point Control
65
9. Move the CMAE switch on the controller to the AUTO position.
Note
The controller will var
the
ressure control si
nal to ad
ust the total flow
to achieve the control pressure. Although the total flow rate will change,
the
ratio
between the gases will remain constant.
10. Adjust the controller’s GAIN and PHASE LEAD settings as needed.
The controller settings listed in Table 11, page 63, are used as a starting point for control.
These settings should be properly tuned to provide accurate control, free from
oscillations. Refer to the appropriate controller instruction manual for complete tuning
information.
To Next Page
Loading...
