Siemens SITRANS P DS III Operating Instructions Manual page 8

Table of contents
7.21 Diagnostic functions .................................................................................................................. 134
7.21.1 Overview ................................................................................................................................... 134
7.21.2 Operating hours counter ........................................................................................................... 135
7.21.3 Calibration timer and service timer ........................................................................................... 135
7.21.4 Min/max indicator ...................................................................................................................... 137
7.21.5 Limit modules ............................................................................................................................ 138
7.22 Simulation.................................................................................................................................. 140
7.22.1 Overview of simulation .............................................................................................................. 140
7.22.2 Simulation as fixed value .......................................................................................................... 141
7.22.3 Simulation with a ramp function ................................................................................................ 141
7.23 Limit monitor .............................................................................................................................. 141
8 Functional safety .................................................................................................................................. 145
8.1 Safety function .......................................................................................................................... 145
8.2 Safety Integrity Level (SIL) ........................................................................................................ 147
8.3 Settings ..................................................................................................................................... 149
8.4 Safety characteristics ................................................................................................................ 150
8.5 Maintenance/Checking .............................................................................................................. 151
8.6 Add-on parts .............................................................................................................................. 152
8.6.1 Checking a device with add-on pneumatic block ...................................................................... 152
8.6.2 Checking a device with add-on remote seal ............................................................................. 152
9 Commissioning .................................................................................................................................... 153
9.1 Basic safety instructions ............................................................................................................ 153
9.2 Introduction to commissioning .................................................................................................. 154
9.3 gauge pressure, absolute pressure from the differential pressure series and absolute
pressure from the gauge pressure series ................................................................................. 155
9.3.1 Commissioning for gases .......................................................................................................... 155
9.3.2 Commissioning with steam or liquid .......................................................................................... 157
9.4 Differential pressure and flow rate ............................................................................................ 158
9.4.1 Safety notes for commissioning with differential pressure and flow rate .................................. 158
9.4.2 Commissioning in gaseous environments ................................................................................ 159
9.4.3 Commissioning for liquids ......................................................................................................... 160
9.4.4 Commissioning with vapor ........................................................................................................ 162
10 Service and maintenance ..................................................................................................................... 165
10.1 Basic safety instructions ............................................................................................................ 165
10.2 Maintenance and repair work .................................................................................................... 168
10.2.1 Defining the maintenance interval ............................................................................................. 168
10.2.2 Checking the gaskets ................................................................................................................ 169
10.2.3 Display in case of a fault ........................................................................................................... 170
10.2.4 Changing the measuring cell and application electronics ......................................................... 170
10.3 Cleaning .................................................................................................................................... 171
10.3.1 Servicing the remote seal measuring system ........................................................................... 172
10.4 Return procedure ...................................................................................................................... 173
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SITRANS P DS III with HART
Operating Instructions, 06/2013, A5E00047092-09