ECOLAB MULTRONIC Bedienungsanleitung Seite 41

The set point difference (LW) function can be used to enter the absolute interval
between switching point 2 and the set point.
Value range 0 pH to ±14 pH
A switch hysteresis around switch point 2 can be specified with the switch difference
(X2SD) settings. The stated percentage relates to the absolute value of switching point 2.
Value range: 0.0% to 30.0%
Through selecting the module selection function one returns to configuration module
selection.
Page 2 displays additional parameters on a second page of settings.
The following settings apply to the 2-point PID controller:
PH controller
parameters page 1
(2-point-PID)
The set point (W) function is used to specify the nominal value within the measuring
range.
Value range (in dependence on the set measuring range):
Measuring range
0..14 pH
2..12 pH
3..8 pH
The proportional area (XP1) function is used to specify the proportionality factor for the
P-proportion of the controller.
Value range: 0 % to 999 %
The ID-proportion of the controller can be adjusted with the prelim time (Tv) and delay
time (Tn) functions.
Value range: 0 sec to 1200 sec (prelim time)
The absolute interval between switching point 2 and the set point can be specified with
the set point difference (LW) function.
Value range 0 pH to ±14 pH
The switch difference (X2SD) function is used to specify a switch hysteresis around
switching point 2. The stated percentage refers to the absolute value of switching point 2.
Value range: 0.0 % to 30.0 %
Through selecting the module selection function one returns to the controller parameter
module selection.
Page 2 displays additional parameters on a second page of settings.
417101804_Anhang03_pH.doc
Value range
0 pH to 14 pH
2 pH to 12 pH
3 pH to 8 pH
0 sec to 3600 sec (delay time)
pH Measuring Module
- 41 - Rev.: 07-07/10