Siemens SITRANS P DS III - Diagnostics Functions; Operating Hours Counter; Calibration Interval and Service Interval

Operator control functions via PROFIBUS
7.9 Diagnostics functions
SITRANS P DS III with PROFIBUS PA
120 Operating Instructions, 06/2013, A5E00053276-07
7.9
Diagnostics functions
7.9.1
Operating hours counter
You can read out one operating hours counter for the electronics and one for the sensor.
They are activated upon first commissioning of the transmitter.
7.9.2
Calibration interval and service interval
There are two timers in the transmitter:
● A timer for the calibration interval, which ensures regular calibration of the electronics.
● A timer for the service interval, which draws attention to any necessary service for the
sensor cell and its connections.
The interval is selectable. The timers can monitor on two levels, first giving a warning, then
an alarm.
v
Timer value
t
Time
A
Alarm
W
Warning
Figure 7-9 Calibration and service intervals