Liquisys M CPM223/253
Operation
Hauser
49
SCS operating voltage for pH sensors with Memosens functionality
If the connection between the pH sensor with Memosens functionality and cable is just connected
but not locked, the supply voltage can drop below the required voltage value due to the poor
coupling. This results in incorrect measurement.
With the SCS operating voltage, the supply voltage of a pH sensors with Memosens functionality is
monitored.
If this value drops below the safety limit, the measured value is ignored and the error E 127 is
output.
P9
Select process
monitoring (PCS
alarm)
Off
AC
CC
AC CC
AC!
CC!
ACCC!
AC = sensor activity monitoring
CC = controller monitoring
Alarm possible with or without simultaneous
controller switch-off.
xxxx = without controller switch-off
xxxx! = with controller switch-off
P10
Enter maximum
permissible duration
for alarm threshold
undershoot
60 min
0 ... 2000 min
Only for P9 = CC or AC CC.
P11
Enter maximum
permissible duration
for alarm threshold
overshoot
120 min
0 ... 2000 min
Only for P9 = CC or AC CC.
P12
Enter alarm threshold
(for P10 / P11)
1.00 pH
-2.00 ... 16.00 pH
Set value is an absolute value. This function is
primarily suited to batch operation and
single-sided limit switches.
Coding
Field
Setting range
(Factory settings, bold)
Display
Info
P9
ProcMonit
Off
P10
min
Tmax Low
60
P11
min
Tmax High
120
P12
pH
Setpoint
1.0
