Operation Liquiline CM442/CM444/CM448
94 Endress+Hauser
Start delay 0 to 9999 s
Factory setting
0 s
Operating mode="In range check", "Out of range
check","Above limit check" or "Below limit check"
Synonyms: pick-up and drop-out delay
Switch off delay
Delta value Settings
Depends on the measured
value
Operating mode="Change rate"
The slope of the measured value (MV) is monitored in
this mode.
An event is generated if, in the given timeframe (Delta
time), the measured value increases or decreases by
more than the specified value (Delta value). No further
event is generated if the value continues to experience
such a steep increase or decrease.
If the slope is back below the limit value, the alarm
status is reset after a preset time (Auto Confirm).
Events are triggered by the following conditions in the
example given:
t
2
- t
1
< "Delta time" and ΔMV
1
> "Delta value"
t
4
- t
3
> "Auto Confirm" and ΔMV
2
< "Delta value"
t
6
- t
5
< "Delta time" and ΔMV
3
> ΔMV
Delta time 00:01 to 23:59
Factory setting
01:00
Auto Confirm 00:01 to 23:59
Factory setting
00:01
a0018100
Fig. 89: aChange rate
Path: Menu/Setup/Additional functions/Limit switches/Limit switches 1 to 8
Function Options Info
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