Hach-Lange RTC113 ST-Module - Manual (Page 23)

23
Parameterization and operation
CONTROL PARAMETER
CHANNEL 1
FACTOR POLYMER
DOSING
Required specific polymer dosing [g/kg]. This parameter
determines how many grams of polymer per kilogram of TSS
are fed by the machine.
g/kg
POLYMER CONCEN-
TRATION
Polymer concentration [g/L] fed via the polymer pump. g/L
MANUAL POLYMER
DOSING
The RTC outputs the polymer flow rate [L/h] if
•
FEED FLOW CONTROL is activated
• No open-loop control mode (see above) is activated
• The TSS measurement from the influent reports an error, or
• The flow measurement from the influent reports an error.
L/h
MANUAL FEED FLOW
The RTC outputs the feed flow rate [m³/h] if
•
POLYMER DOSING CONTROL is activated
• No open-loop control mode (see above) is activated
• The TSS measurement from the influent reports an error, or
• The flow measurement from the influent reports an error
m³/h
MAX DECREASE CLOSED
L
This value defines the maximum decrease of the specific
polymer dosing rate FACTOR POLYMER DOSING [g/kg] if
CLOSED LOOP EFFLUENT CONTROL is selected.
g/kg
MAX INCREASE CLOSED L
This value defines the maximum increase of the specific
polymer dosing rate FACTOR POLYMER DOSING [g/kg] if
CLOSED LOOP EFFLUENT CONTROL is selected.
g/kg
SET-POINT TSS
Required setpoint of the TSS concentration in the thickened
sludge.
Note: This parameter is only considered if CLOSED LOOP
EFFLUENT CONTROL is activated.
g/L
P GAIN TSS
Proportional gain for the PID closed-loop controller for the TSS
concentration in the thickened sludge.
Note: P GAIN TSS [L/g] is divided by 100 before it is multiplied
by the deviation of the actual TSS concentration from the
required TSS setpoint.
L/g
INTEGRAL TIME TSS
Integral time for the PID closed-loop controller for the TSS
concentration in the thickened sludge.
Note: INTEGRAL TIME TSS is set to "0" to deactivate the
integral part of the PI open-loop controller.
min
DERIVATIVE TIME TSS
Derivative time for the PID closed-loop controller for the TSS
concentration in the thickened sludge.
min
CHANNEL 2 As per channel one
4.4.1 RTC113 ST-Module open and closed-loop controller (Continued)
RTC MODULES / PROGNOSYS
RTC MODULES
RTC