Parameterization and operation – Hach-Lange RTC103 N-Module User Manual
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Parameterization and operation
MIN RECIRCULATION
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Minimum recirculation flow rate according to measurement signal
corresponding to 0/4mA
[L/s]
MAX RECIRCULATION
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Maximum recirculation flow rate of influent according to
measurement signal corresponding to 20mA
[L/s]
0/4 to 20 mA
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Transfer range of 0/4 to 20 mA current loop as set in connected flow
measuring instrument.
Note: The input is not connected to the 0/4 to 20 mA has to be
calculated in ratio to Qinflow.
Q RECI RATIO
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
If the value Q RECI RATIO is “0” the RECI flow is calculated bases
on the mA input signal.
If the value is different from “0” the RECI flow is calculated from the
inflow:
Q RECI= Q RECI RATIO * INFLOW
within the limits of MIN RECIRCULATION and MAX
RECIRCULATION.
[%]
MIN RETURN SLUDGE
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Minimum return sludge flow rate according to measurement signal
corresponding to 0/4mA
[L/s]
MAX RETURN SLUDGE
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Maximum return sludge flow rate of influent according to
measurement signal corresponding to 20mA
[L/s]
0/4 to 20 mA
Note: 0/4 to20 mA input can be used either for Qreci or for Qras.
Transfer range of 0/4 to 20 mA current loop as set in connected flow
measuring instrument.
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
4.5.1
2-Channel RTC103 N-Module (Continued)
RTC MODULES / PROGNOSYS
RTC MODULES
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