Siemens SITRANS P Compact Operating Instructions page 4

Table of contents
5.2.2 Connecting the device ....................................................................................................... 39
5.2.3 Closing the device.............................................................................................................. 40
5.3 Switching on the supply voltage......................................................................................... 41
6 Commissioning .................................................................................................................................... 43
6.1 Basic safety instructions ..................................................................................................... 43
6.2 Commissioning the device ................................................................................................. 44
6.3 Application examples ......................................................................................................... 45
6.3.1 Gauge pressure, absolute pressure from differential pressure series, and absolute
pressure from gauge pressure series................................................................................... 45
6.3.1.1 Commissioning in gaseous environments ........................................................................... 45
6.3.1.2 Commissioning with steam or liquid................................................................................... 47
6.3.2 Differential pressure and flow rate ...................................................................................... 48
6.3.2.1 Commissioning in gaseous environments ........................................................................... 48
6.3.2.2 Commissioning for liquids .................................................................................................. 50
6.3.2.3 Commissioning with vapor................................................................................................. 52
7 Service and maintenance .................................................................................................................... 55
7.1 Basic safety instructions ..................................................................................................... 55
7.2 Cleaning ............................................................................................................................ 56
7.2.1 Servicing the remote seal measuring system ...................................................................... 56
7.3 Maintenance and repair work............................................................................................. 56
7.3.1 Defining the maintenance interval...................................................................................... 57
7.3.2 Checking the seals ............................................................................................................. 58
7.4 Return procedure ............................................................................................................... 58
7.5 Disposal............................................................................................................................. 59
8 Technical data...................................................................................................................................... 61
8.1 Input ................................................................................................................................. 61
8.1.1 Gauge pressure.................................................................................................................. 61
8.1.2 Gauge pressure with front-flush diaphragm........................................................................ 62
8.1.3 Gauge pressure from the differential pressure series ........................................................... 63
8.1.4 Absolute pressure from the gauge pressure series............................................................... 64
8.1.5 Absolute pressure with front-flush diaphragm .................................................................... 65
8.1.6 Absolute pressure from the differential pressure series........................................................ 66
8.1.7 Differential pressure and flow............................................................................................. 67
8.1.8 Level.................................................................................................................................. 69
8.2 Operating conditions ......................................................................................................... 70
8.3 Vibration resistance ........................................................................................................... 75
8.4 Construction...................................................................................................................... 76
8.5 Torques ............................................................................................................................. 80
8.6 Display, keys and auxiliary power ....................................................................................... 81
8.7 Certificates and approvals................................................................................................... 81
A Product documentation and support .................................................................................................. 87
A.1 Product documentation ..................................................................................................... 87
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Compact Operating Instructions, 01/2021, A5E38874562-AC
SITRANS P320/P420