Parameterization and operation – Hach-Lange WTOS P-RTC User Manual
Page 27
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Parameterization and operation
CONFIGURE (CONTINUE)
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]
CHANNEL 2
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]
FLOW RATE
CHANNEL 1
MIN Q-INFLUENT
Minimum flow rate in inlet according to measurement signal
[m³/h]
MAX Q-INFLUENT
Maximum flow rate in inlet according to measurement signal
[m³/h]
0/4...20MA
Transfer range of 0/4–20 mA current loop, as set in the connected flow measuring instrument
MIN RET SLUDGE
Minimum flow rate of return activated sludge pump(s) (refer to
MAX RET SLUDGE
Maximum flow rate of return activated sludge pump(s) (refer to
)
[m³/h]
Q RET RATIO
Ratio between measured flow rate and return activated sludge volume, for a return
activated sludge volume proportional to the measured flow rate (Refer to
)
[%]
Q INFL SMOOTH
Smoothing of influent signal (refer to
CHANNEL 2
MIN Q-INFLUENT
Minimum flow rate in inlet according to measurement signal
[m³/h]
MAX Q-INFLUENT
Maximum flow rate in inlet according to measurement signal
[m³/h]
0/4...20MA
Transfer range of 0/4–20 mA current loop, as set in the connected flow measuring
instrument.
MIN RET SLUDGE
Minimum flow rate of return activated sludge pump(s) (refer to
MAX RET SLUDGE
Maximum flow rate of return activated sludge pump(s) (refer to
)
[m³/h]
Q RET RATIO
Ratio between measured flow rate and return activated sludge volume, for a return
activated sludge volume proportional to the measured flow rate (Refer to
)
[%]
Q INFL SMOOTH
Smoothing of influent signal (refer to
2-channel closed-loop control