Siemens SITRANS 7MF03.0 - Page 4

4.2.3 Closing the device..................................................................................................................34
5 Commissioning...........................................................................................................................................37
5.1 Basic safety instructions.........................................................................................................37
5.2 Switching on the supply voltage.............................................................................................38
5.3 Commissioning the device.....................................................................................................39
5.4 gauge pressure, absolute pressure from the differential pressure series and absolute
pressure from the gauge pressure series..............................................................................39
5.4.1 Commissioning for gases.......................................................................................................39
5.4.2 Commissioning with steam or liquid.......................................................................................41
5.5 Differential pressure and flow rate.........................................................................................42
5.5.1 Commissioning in gaseous environments..............................................................................42
5.5.2 Commissioning for liquids......................................................................................................44
5.5.3 Commissioning with vapor.....................................................................................................45
6 Service and maintenance...........................................................................................................................49
6.1 Basic safety instructions.........................................................................................................49
6.2 Cleaning.................................................................................................................................50
6.2.1 Cleaning the enclosure..........................................................................................................50
6.2.2 Servicing the remote seal measuring system........................................................................50
6.3 Maintenance and repair work.................................................................................................50
6.3.1 Defining the maintenance interval..........................................................................................51
6.3.2 Checking the gaskets.............................................................................................................52
6.3.3 Diagnostics messages...........................................................................................................53
6.4 Return procedure...................................................................................................................53
6.5 Disposal.................................................................................................................................54
7 Technical data............................................................................................................................................55
7.1 Input.......................................................................................................................................55
7.1.1 Gauge pressure.....................................................................................................................55
7.1.2 Gauge pressure with front-flush diaphragm...........................................................................56
7.1.3 Gauge pressure from the differential pressure series............................................................57
7.1.4 Absolute pressure from the gauge pressure series...............................................................58
7.1.5 Absolute pressure with front-flush diaphragm........................................................................59
7.1.6 Absolute pressure from the differential pressure series.........................................................60
7.1.7 Differential pressure and flow.................................................................................................61
7.1.8 Level.......................................................................................................................................62
7.2 Measuring accuracy of SITRANS P320.................................................................................63
7.2.1 Reference conditions.............................................................................................................63
7.2.2 Effect of auxiliary power supply..............................................................................................63
7.2.3 Gauge pressure.....................................................................................................................63
7.2.4 Gauge pressure from the differential pressure series............................................................65
7.2.5 Absolute pressure from gauge and differential pressure series.............................................66
7.2.6 Absolute pressure with front-flush diaphragm........................................................................67
7.2.7 Gauge pressure with front-flush diaphragm...........................................................................68
7.2.8 Differential pressure and flow.................................................................................................69
7.2.9 Level.......................................................................................................................................72
Table of contents
SITRANS P320/P420 (mA/HART)
4 Compact Operating Instructions, 06/2018, A5E38874562-AA