HACH LANGE RTC103 N-Module, User Manual

Page: 40 / 66

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Parameterization and operation
Q RETURN RATIO
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
If the value Q RETURN RATIO is “0” the RAS flow is calculated
bases on the mA input signal.
If the value is different from “0” the RAS flow is calculated from the
inflow:
Q RETURN = Q RETURN RATIO * INFLOW
within the limits of MIN RETURN SLUDGE and MAX RETURN
SLUDGE.
[%]
CHANNEL 2 same as CHANNEL 1
VOLUME
CHANNEL 1
VOLUME Aerated volume [m
3
]
CHANNEL 2 same as CHANNEL 1
4.5.2 2-Channel RTC103 N-Module Stages (Continued)
RTC MODULES / PROGNOSYS
RTC MODULES
RTC
4.5.3 2-Channel RTC103 N-Module VFD
RTC MODULES / PROGNOSYS
RTC MODULES
RTC
CONFIGURE
SELECT SENSOR
Selection list of available, relevant sensors for the RTC module in
the sc network (refer to
4.6 Select sensors on page 45 ).
N CONTROL