Hach-Lange WTOS P-RTC - Manual (Page 26)

26
Parameterization and operation
2-channel closed-loop control
CONFIGURE
SELECT SENSOR Select the sensors installed for the closed-loop control (see Section 4.4, page 29 ).
CLOSED-LOOP
CHANNEL 1
SETPOINT PO4-P Desired orthophosphate value in effluent (refer to 4.5.1, page 31 ) [mg/L]
GAIN P CONTR. Proportional gain of the closed-loop control (refer to 4.5.5, page 32 )
INTEGRALTIME Integral time of closed-loop control (refer to 4.5.5, page 32 ) [min]
DERIVATIVE TIME Derivative time of closed-loop control (refer to 4.5.5, page 32 ) [min]
MIN DOS RATE Minimum flow rate of dosing pump [L/h]
PRESELECT PROG Programs 1 to 4 (refer to 4.1, page 15 )
CHANNEL 2
SETPOINT PO4-P Desired orthophosphate value in effluent (refer to 4.5.1, page 31 ) [mg/L]
GAIN P CONTR. Proportional gain of the closed-loop control (refer to 4.5.5, page 32 ) [%]
INTEGRALTIME Integral time of closed-loop control (refer to 4.5.5, page 32 ) [%]
DERIVATIVE TIME Derivative time of closed-loop control (refer to 4.5.5, page 32 )
MIN DOS RATE Minimum flow rate of dosing pump [L/h]
PRESELECT PROG Programs 1 to 4 (refer to 4.1, page 15 )
PROFILE Active when a measurement signal fails
Q-PROFILE
Daily profiles (2 h average) of waste water influent according to feed measurement
signal
[m³/h]
DIST PROFILE Percentage distribution of flow rate; input refers to channel 1. [%]
P-PROFILE Daily profiles of PO
4
-P concentrations, 2 h average (see 4.5.4, page 32 ) [mg/L]
WEEK PROFILE Percentage daily averages of the phosphate load (refer to 4.5.4, page 32 ) [%]