wtw TecnoLine pH 171 Bedienungsanleitung Seite 118

Adjustable times for TIMER function (default = ex-factory condition):
Time T1 (time for passive condition)
Time T2 (time for active condition)
Setting of limit value relay (default = ex-factory condition):
Chart:
Limit
Hysteresis
Delay time
Signal activity
Limit: Set upper or lower limit value (control value).
If the test signal is above or below this value the corresponding relay
configured as limit contact operates.
Hysteresis: Range symmetrically above and below the adjusted control value by which the
operating point of the relay is delayed in order to prevent the automatic control
from oscillating.
Delay time: Time in seconds for which the value must be available before the relay
operates (by which the operation of the relay can be delayed).
Message Lays down whether or not an event is indicated in the status line in field one.
activity
122
Minimum:
Maximum:
Setting accuracy:
Default value:
Minimum:
Maximum:
Setting accuracy:
Default value:
Minimum:
Maximum:
Setting accuracy:
Default value:
Default:
Parameterization
Minimum:
Maximum:
Default value:
Minimum:
Maximum:
Setting accuracy:
Default value:
0 (in difference operation: Recorder range x-0.5)
Recorder range (in difference operation x+0.5)
corresponding to indication of measured value
for upper limits the maximum,
otherwise the minimum.
0
10% of recorder range
corresponding to indication of measured value
0
0 s
20 s
1 s
0 s
no message
1 h
24 h
1 h
0.5 min
5.0 min
0.5 min
0.5 min