Table of Contents
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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
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
4
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions, 06/2018, A5E38874562-AA
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