Operate
6.2 Parameter description
SITRANS P500 with HART
134
Operating Instructions, 12/2014, A5E02344528-09
"3.8.1.6 HiHi Value"
Factory setting:
0
Purpose:
Setting the upper alarm value
Description:
This parameter allows you to set the value of the upper alarm limit in the unit
of the selected measurement type.
"3.8.1.7 Hysteresis"
Factory setting:
0
Setting range:
In the unit of the selected measuring mode
Purpose:
Setting the limit transmitter hysteresis
Description:
This parameter allows you to set the switching threshold for disregarding
changes in pressure that are too small. The parameter is the same for the
upper and lower monitoring value.
"3.8.1.8 Response Time"
Factory setting:
0
Adjustment range:
In [s]
Purpose:
Setting the response time of the limit transmitter
Description:
This parameter allows you to set the time that should elapse after the limit
value has been exceeded, before a warning or an alarm is triggered.
See also
Limit monitor (Page 166)
"3.8.1.9 Hold Time"
Factory setting:
5
Adjustment range:
In [s]
Purpose:
Setting the holding time of the limit transmitter
Description:
This parameter allows you to set the time for which a warning or an alarm is
output, even if the limit was exceeded or undershot for only a very brief
period.
Holding time with the value 0: Even when the event that triggered them no
longer persists, warning and alarm messages remain outstanding until they
are acknowledged by the user in the "3.8.2 Acknowledge" (Page 135) menu.
Holding time with a value greater than 0: When the event that triggered
them no longer persists, warning and alarm messages are canceled after
the holding time is assigned parameters.
Note:
If after this time has expired the limit is exceeded or undershot again, this
time starts afresh.
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