Siemens SITRANS P DS III Operating Instructions Manual page 136

Functional safety
8.5 Maintenance/check
3. Apply a second input pressure.
4. Check the transferred value.
Image 8-3
Procedure for monitoring a minimum pressure
Checking monitoring of a minimum pressure
1. Check the monitoring of the minimum pressure with the threshold defined in the system.
2. Apply an input pressure value that is above the threshold.
3. Apply an input pressure value that is ≥ 1% of the maximum measuring range below the
threshold.
①
Image 8-4
136
Example of two-point measurement 10%
Threshold
Example of monitoring of a minimum pressure
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08