Hach-Lange WTOS P-RTC - Manual (Page 27)

27
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 4.5.6, page 33 ) [s]
MIN RUNTIME Minimum on-time of pump (refer to 4.5.6, page 33 ) [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 4.5.6, page 33 ) [s]
MIN RUNTIME Minimum on-time of pump (refer to 4.5.6, page 33 ) [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 4.5.7, page 34 ) [m³/h]
MAX RET SLUDGE Maximum flow rate of return activated sludge pump(s) (refer to 4.5.7, page 34 ) [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
4.5.7,
page 34 )
[%]
Q INFL SMOOTH Smoothing of influent signal (refer to 4.5.7, page 34 )
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 4.5.7, page 34 ) [m³/h]
MAX RET SLUDGE Maximum flow rate of return activated sludge pump(s) (refer to 4.5.7, page 34 ) [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
4.5.7,
page 34 )
[%]
Q INFL SMOOTH Smoothing of influent signal (refer to 4.5.7, page 34 )
2-channel closed-loop control