Hach-Lange RTC113 ST-Module - Manual (Page 31)

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Parameterization and operation
4.8.7 LIMIT TSS OUT LOW
TSS measurement values for the thickened sludge that are below
this value [g/L] are set to this value (to avoid low peaks).
4.8.8 LIMIT TSS OUT HIGH
TSS measurement values for the thickened sludge that are
above this value [m 3 /h] are set to this value (to avoid high peaks).
4.8.9 TSS OUT SMOOTHING
TSS measurement values from the effluent are smoothed in line
with this parameter.
SMOOTHING = 1: The signal is not smoothed.
SMOOTHING = 2: Smoothing is performed over 3 minutes.
SMOOTHING = 3: Smoothing is performed over 5 minutes.
SMOOTHING = 5: Smoothing is performed over 12 minutes.
SMOOTHING = 10: Smoothing is performed over
25 minutes.
4.8.10 POLYMER DOSING MINIMUM
RTC calculations below this value [g/L] are set to this value and
transferred to the polymer pump.
Note: When FEED FLOW CONTROL is activated, measurement values
for the polymer dosing rate that are below this value [m 3 /h] are set to this
value (to avoid low peaks in the dosing flow).
4.8.11 POLYMER DOSING MAXIMUM
RTC calculations above this value [g/L] are set to this value and
transferred to the polymer pump.
Note: When FEED FLOW CONTROL is activated, measurement values
for the polymer dosing rate that are above this value [m 3 /h] are set to this
value (to avoid high peaks in the dosing flow).
4.9 INPUTS
4.9.1 MIN FEED FLOW
Minimum flow rate [m³/h] from the influent in accordance with the
0/4 mA measurement signal.
4.9.2 MAX FEED FLOW
Maximum flow rate [m³/h] from the influent in accordance with the
20 mA measurement signal.
4.9.3 0/4...20 mA
Transfer range of the 0/4 to 20 mA current loop (as set in
connected flow measuring instrument).