5.4
Monitoring functions
The monitoring functions are used to define
various alarms and to set output contacts.
Each individual error can defined to be
effective or not (at the contact or as an error
current). Moreover, measuring cell
polarisation (P1) can be detected, or the
measuring signal can be checked to
ascertain that the measuring cell is working
properly (it must supply plausible values). An
alarm condition can be defined to activate a
cleaning function (F8).
5.4.1
Alarm
Coding
Field
Selection or range
Factory setting
Display
Info
O234
Enter x value
(measured value)
cond/ind:
0.00 µS/cm
MOhm:
0.00 k
Ω⋅
cm
conc:
0.00 %
temp.:
0.0 °C
entire meas. range
x value = measured value
determined by user.
O235
Enter y value
(current value)
0.00 mA
0.00 ... 20.00 mA
y value = current value
determined by user to be
associated with measured value
entered in O234.
O236
Enter whether or
not the table
status is okay
yes
no
If “yes”: return to O2.
If “no”: return to O233.
Factory settings are printed in
bold
face;
base version does not include functions in italics.
Coding
Field
Selection or range
Factory setting
Display
Info
F
Function group
ALARM
Alarm function settings.
F1
Selection of
contact type
Stead
=
steady
contact
Fleet = fleeting
contact
The contact type selected here
only applies to the alarm contact.
F2
Selection of time
unit
s
min
O234
Meas.val.
0.00
µS/cm
O235
mA value
0.00
mA
O236
Status ok
yes
F
ALARM
F1
Cont.Type
Stead
F2
Time Unit
s
Instrument configuration
Liquisys M CLM 223 / 253
28
Hauser
