Emerson Rosemount 2120, Справочное руководство

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Contents
Chapter 1 Introduction.............................................................................................................. 7
1.1 Using this manual........................................................................................................................ 7
1.2 Product certifications...................................................................................................................7
1.3 Product recycling/disposal...........................................................................................................7
Chapter 2 Level switch overview................................................................................................ 9
2.1 Measurement principles.............................................................................................................. 9
2.2 Process characteristics.................................................................................................................9
2.3 Vessel characteristics...................................................................................................................9
2.4 Application examples.................................................................................................................10
2.5 Components of the level switch................................................................................................. 12
Chapter 3 Mechanical installation............................................................................................ 15
3.1 Safety messages........................................................................................................................ 15
3.2 Installation considerations......................................................................................................... 16
3.3 Installation procedures.............................................................................................................. 26
Chapter 4 Electrical installation................................................................................................33
4.1 Safety messages........................................................................................................................ 33
4.2 Prepare the electrical connections............................................................................................. 34
4.3 Connect wiring and power up.................................................................................................... 48
Chapter 5 Operation................................................................................................................ 53
5.1 Output mode and time delay..................................................................................................... 53
5.2 LED indication status..................................................................................................................54
Chapter 6 Service and troubleshooting.................................................................................... 55
6.1 Safety messages........................................................................................................................ 55
6.2 Magnetic test point....................................................................................................................56
6.3 Visual inspection........................................................................................................................58
6.4 Maintenance..............................................................................................................................58
6.5 Troubleshooting........................................................................................................................ 59
6.6 Spare parts................................................................................................................................ 60
6.7 Replacement and calibration of cassettes.................................................................................. 61
6.8 Opening the lid (cover).............................................................................................................. 63
6.9 Service support..........................................................................................................................63
Appendix A Specifications and reference data............................................................................. 65
A.1 General......................................................................................................................................65
A.2 Physical specifications............................................................................................................... 65
A.3 Performance specifications........................................................................................................67
A.4 Electrical specifications..............................................................................................................67
Reference Manual Contents
00809-0100-4030 March 2022
Rosemount 2120 Level Switch 5