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7.4 CH1 ATOMIZING AIR PRESSURE SETUP
CH1 ATOMIZING AIR PID
The graph is a trend of the atomizing air setpoint and process value versus time.
Item
Description
Atom Air Press 1
(editable)
Displays the channel 1 atomizing air pressure
Atom Air Press
(selection)
Selects the method of atomizing air pressure feedback for control loops.
Not Installed:
There is no pressure sensor installed in the atomizing air line. Certain features will
not be enabled as they require liquid pressure feedback.
Installed:
There is a pressure sensor installed in the atomizing air line and will be used when
utilizing relevant feedback loops.
Manual:
Allows for a user to enter an atomizing air pressure that can be used for feedback loops instead
of the actual pressure.
Span
(editable)
Set the span of the atomizing air pressure sensor based on a 4
-
20mA scale, with 4mA being 0 by default
and 20mA will be the span you enter in this field.
Ch 1 Atom Air I/P
Output
(toggle)
Turns on or off the atomizing air pressure signal output
Span
(editable)
Sets the 20 mA output of the atomizing air pressure signal, with 4 mA being 0 PSI
Ch1 Atomizing Air
Pressure PID
Takes the user to the channel 1 atomizing air pressure PID screen.
Item
Description
Atomizing Air CTRL
OPEN LOOP
(on/off)
Toggles liquid pressure PID on/off for speci-
fied channel
Atom Air Pressure SP
(read only)
Display desired atomizing air pressure (PSI).
Atom Air Press PV
(read only)
Display of the current atomizing air pressure
(PSI).
Atomizing Air CF
(Editable)
The atomizing air pressure correction factor
is determined by running the PID in closed
loop. It can be manually adjusted while in
open loop.
Kp
(editable)
Enter the desired Kp value for PID control
Ki
(editable)
Enter the desired Ki value for PID control
Graph Scale
(editable)
Adjusts the scale of the Y
-
axis of the graph.
Reset
(executable)
Resets the graph.
