Table of Contents
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Table of Contents
Safety Notes .............................................................................................................................................1
Safety marking symbols ..............................................................................................................1
The Manual .....................................................................................................................................1
Application Examples ...................................................................................................................2
Technical Support ..........................................................................................................................2
Abbreviations and Identifications .............................................................................................3
SITRANS LC500 Overview ................................................................................................. 4
Technical Specifications ................................................................................................... 5
Transmitter .......................................................................................................................... 9
Operating Principles ...............................................................................................................................9
The SITRANS LC500 variable frequency oscillator ........................................................................9
The SITRANS LC500 electrode ..........................................................................................................11
Application: SITRANS LC500 ....................................................................................................13
Level Measurement ....................................................................................................................14
Interface Measurement .............................................................................................................15
Switch action ................................................................................................................................15
Fault Signalling .............................................................................................................................16
Probe Configuration ......................................................................................................... 17
SITRANS LC500 Electrode (Probe) Characteristics ......................................................................17
Electrode Assembly ..............................................................................................................................18
Process Connections ..................................................................................................................18
Seal Types .....................................................................................................................................18
Process Connection and Seal Configuration of SITRANS LC500 ...................................18
Pressure and Temperature Considerations ..........................................................................19
Non-standard applications .......................................................................................................20
Installation .........................................................................................................................21
Handling Precautions ...........................................................................................................................21
Handling Electrodes ..............................................................................................................................22
Mounting Instructions ..........................................................................................................................22
Protection for solid-state switch .............................................................................................22
Process Cautions .......................................................................................................................23
SITRANS LC500: Standard Level Version ..............................................................................23
Interconnection .................................................................................................................24
Wiring .......................................................................................................................................................24
Supply .............................................................................................................................................24
Cable ...............................................................................................................................................25
Selecting the correct instrumentation cable ......................................................................25
Terminals .................................................................................................................................................27
Connecting SITRANS LC500 ...............................................................................................................27
Connection Diagram .................................................................................................................27
Protection for solid-state switch .............................................................................................28
Grounding instructions ..............................................................................................................28
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