Parameterization and operation – Hach-Lange WTOS P-RTC User Manual
Page 21
21
Parameterization and operation
2-channel open-loop control
CONFIGURE
SELECT SENSOR
Select the sensors installed for the open-loop control (see
).
OPEN-LOOP
PRECIP. TYPE
Precipitation, simultaneous precipitation, post-precipitation
CHANNEL 1
SETPOINT PO4-P
Desired orthophosphate value in effluent (refer to
) [mg/L]
CORR FACTOR
Percentage correction of precipitant dosing (see
BIO-P
Phosphate biologically eliminated after influent (refer to
) [%]
MIN DOS RATE
Minimum flow rate of dosing pump
[L/h]
PRESELECT PROG
Programs 1 to 4 (refer to
)
CHANNEL 2
SETPOINT PO4-P
Desired orthophosphate value in effluent (refer to
) [mg/L]
CORR FACTOR
Percentage correction of precipitant dosing (see
) [%]
BIO-P
Phosphate biologically eliminated after influent (refer to
) [%]
MIN DOS RATE
Minimum flow rate of dosing pump
[L/h]
PRESELECT PROG
Programs 1 to 4 (refer to
)
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
) [mg/L]
WEEK PROFILE
Percentage daily averages of the phosphate load (refer to
IN- OUTPUTS
DOSING PUMP
CHANNEL 1
MIN PUMP RANGE
Lower threshold of flow rate range
[L/h]
MAX PUMP RANGE
Upper threshold of flow rate range
[L/h]
0/4...20MA
Selection of transfer range according to pump input
CONTROL CYCLE
Control cycle comprising on- and off-time (see
)
[s]
MIN RUNTIME
Minimum on-time of pump (refer to
) [s]