Hach-Lange RTC113 ST-Module User Manual
Page 29
29
Parameterization and operation
4.7.3
MANUAL POLYMER DOSING
The RTC outputs the polymer dosing rate [L/h] if
•
FEED FLOW CONTROL is activated
•
No open-loop control mode (
section 4.6.1
to
section 4.6.3
) is
activated
•
The TSS measurement from the influent reports an error, or
•
The flow measurement from the influent reports an error.
4.7.4
MANUAL FEED FLOW
The RTC outputs the feed flow rate [m
3
/h] if
•
POLYMER DOSING CONTROL is activated
•
No open-loop control mode (
section 4.6.1
to
section 4.6.3
) is
activated
•
The TSS measurement at the inlet reports an error, or
•
The flow measurement from the influent reports an error.
4.7.5
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.
4.7.6
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.
4.7.7
SET-POINT TSS
Required setpoint of the TSS concentration in the thickened
sludge.
Note: · This parameter is only considered if CLOSED LOOP EFFLUENT
CONTROL (
section 4.6.3
) is activated.
4.7.8
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.
4.7.9
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.