Siemens SITRANS P320 Compact Operating Instructions page 4

Table of contents
5.2.2 Connecting the device ....................................................................................................... 41
5.2.3 Closing the device.............................................................................................................. 42
5.3 Switching on the supply voltage......................................................................................... 43
6 Commissioning .................................................................................................................................... 45
6.1 Basic safety instructions ..................................................................................................... 45
6.2 Commissioning the device ................................................................................................. 46
6.3 Application examples ......................................................................................................... 47
6.3.1 Gauge pressure, absolute pressure from differential pressure series, and absolute
pressure from gauge pressure series................................................................................... 47
6.3.1.1 Commissioning in gaseous environments ........................................................................... 47
6.3.1.2 Commissioning with steam or liquid................................................................................... 49
6.3.2 Differential pressure and flow rate ...................................................................................... 50
6.3.2.1 Commissioning in gaseous environments ........................................................................... 50
6.3.2.2 Commissioning for liquids .................................................................................................. 52
6.3.2.3 Commissioning with vapor................................................................................................. 54
7 Service and maintenance .................................................................................................................... 57
7.1 Basic safety instructions ..................................................................................................... 57
7.2 Cleaning ............................................................................................................................ 58
7.2.1 Servicing the remote seal measuring system ...................................................................... 58
7.3 Maintenance and repair work............................................................................................. 58
7.3.1 Defining the maintenance interval...................................................................................... 59
7.3.2 Checking the seals ............................................................................................................. 60
7.4 Return procedure ............................................................................................................... 60
7.5 Disposal............................................................................................................................. 61
8 Technical data...................................................................................................................................... 63
8.1 Input ................................................................................................................................. 63
8.1.1 Gauge pressure.................................................................................................................. 63
8.1.2 Gauge pressure with front-flush diaphragm........................................................................ 64
8.1.3 Gauge pressure from the differential pressure series ........................................................... 65
8.1.4 Absolute pressure from the gauge pressure series............................................................... 66
8.1.5 Absolute pressure with front-flush diaphragm .................................................................... 67
8.1.6 Absolute pressure from the differential pressure series........................................................ 68
8.1.7 Differential pressure and flow............................................................................................. 69
8.1.8 Level.................................................................................................................................. 71
8.2 Operating conditions ......................................................................................................... 72
8.3 Vibration resistance ........................................................................................................... 77
8.4 Construction...................................................................................................................... 78
8.5 Torques ............................................................................................................................. 82
8.6 Display, keys and auxiliary power ....................................................................................... 83
8.7 Certificates and approvals................................................................................................... 83
A Product documentation and support .................................................................................................. 91
A.1 Product documentation ..................................................................................................... 91
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Compact Operating Instructions, 09/2021, A5E38874562-AD
SITRANS P320/P420