Siemens SITRANS P DS III Operating Instructions Manual page 136

Operating functions through HART
7.21 Diagnostic functions
For performance of the calibration work, you must acknowledge the requests and alarms.
Then you can reset the timer. In addition, there is a facility to deactivate the monitoring
function.
The following procedure applies for acknowledgement of requests and alarms:
As long as the warning/alarm limit has not been reached, the following applies:
1. "Reset the timer" this resets the timer, which then restarts from 0. The monitoring remains
active.
2. "Alarm/Acknowledge the request" this has no effect; the timer continues to run and the
monitoring remains active.
When the warning/alarm limit has been reached, the following applies:
1. "Alarm/Acknowledge the request" resets the request / alarm message, but allows the
timer to continue to run. In this state, a new alarm or warning is not possible since the
time limits have already been exceeded.
2. "Reset timer" resets the request / alarm message, also resets the timer. It acknowledges
the interrupt or warning at the same time. The timer immediately starts running again from
zero and will report again when the warning/alarm limit is next reached. The next
calibration interval is therefore immediately active.
136
SITRANS P DS III with HART
Operating Instructions, 06/2013, A5E00047092-09