Endress+Hauser Liquisys M CLM253 - Page 52

Commissioning Liquisys M CLM223/253
52 Endress+Hauser
You can use the "Check" function group to monitor the measured value for permissible
upper and lower limits and trigger an alarm.
Functions marked in italics are not supported by the basic device version.
Coding Field Range of
adjustment
(factory settings
in bold)
Display Info
P
CHECK function
group
P
CHECK
A0009045-EN
Settings for sensor and
process monitoring
P1 Switch
polarization
detection on or off
(only for
conductive
sensors)
Off
On
P1
Pol.Detec
Off
A0009046-EN
Polarization only occurs with
conductive sensors.
Any polarization that may
occur is detected but is not
compensated for. (Error no.:
E071)
P2 Select alarm
threshold
monitoring
Off
Low
High
LoHi = low and
high
Lo!
Hi!
LoHi!
P2
A.Tresh
Off
A0009048-EN
Alarm possible with or
without controller switch-off.
xxxx = without controller
switch-off
xxxx! = with controller
switch-off
(Error no.: E154, E155)
P3 Enter alarm delay 0 min (s)
0 to 2000 min (s)
P3
s
Err.Delay
0
A0009049-EN
Depending on the option
selected in F2, the alarm
delay can be entered in s or
min.
This delay must first elapse
before undershooting/
overshooting in accordance
with fields P4/P5 results in
an alarm.
P4 Enter lower alarm
threshold
0 µS/cm
0 to 9999 mS/cm
P4
µS/cm
LowAlarm
0.00
A0009050-EN
P5 Enter upper alarm
threshold
9999 µS/cm
0 to 9999 mS/cm
P5
mS/cm
HighAlarm
9999
A0009051-EN
P6 Select process
monitoring
Off
AC
CC
AC+CC
AC!
CC!
AC+CC!
P6
ProcMonit
Off
A0009052-EN
AC = sensor activity
monitoring (E152)
CC = controller monitoring
(E156, E157)
Alarm possible with or
without simultaneous
controller switch-off.
xxxx = without controller
switch-off
xxxx! = with controller
switch-off