Siemens SITRANS Series - Default Chapter; Table of Contents

Table of contents
1 Getting Started...........................................................................................................................................11
1.1 Commissioning the device with display..................................................................................11
1.2 Commissioning the device without display.............................................................................13
2 Introduction.................................................................................................................................................15
2.1 Purpose of this documentation...............................................................................................15
2.2 Document history...................................................................................................................15
2.3 Product compatibility..............................................................................................................15
2.4 Scope of validity of this document..........................................................................................15
2.5 Checking the consignment.....................................................................................................16
2.6 Transportation and storage....................................................................................................16
2.7 Notes on warranty..................................................................................................................17
3 Safety information.......................................................................................................................................19
3.1 Precondition for use...............................................................................................................19
3.1.1 Warning symbols on the device.............................................................................................19
3.1.2 Laws and directives................................................................................................................19
3.1.3 Conformity with European directives......................................................................................20
3.2 Requirements for special applications...................................................................................20
3.3 Use in hazardous areas.........................................................................................................21
4 Description..................................................................................................................................................23
4.1 Area of application.................................................................................................................23
4.2 Structure.................................................................................................................................25
4.3 Nameplate layout...................................................................................................................26
4.4 Functional principle................................................................................................................28
4.4.1 Overview of mode of operation..............................................................................................28
4.4.2 How the electronics work.......................................................................................................29
4.4.3 Measuring cell operation........................................................................................................30
4.4.3.1 Measuring cell for gauge pressure.........................................................................................31
4.4.3.2 Measuring cell for gauge pressure, front-flush membrane.....................................................32
4.4.3.3 Measuring cell for absolute pressure from the gauge pressure series..................................32
4.4.3.4 Measuring cell for absolute pressure, front-flush membrane.................................................33
4.4.3.5 Measuring cell for absolute pressure from the differential pressure series............................34
4.4.3.6 Measuring cell for differential pressure and flow rate.............................................................35
4.4.3.7 Measuring cell for level..........................................................................................................36
4.5 Remote seal...........................................................................................................................37
4.6 System configuration..............................................................................................................37
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA 3