Siemens LC 500 用户手册
Table of Contents
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Safety marking symbols ..............................................................................................................2
The Manual .....................................................................................................................................2
Abbreviations and Identifications .............................................................................................3
The Manual .....................................................................................................................................2
Abbreviations and Identifications .............................................................................................3
Technical Specifications: SITRANS LC 500 ...................................................................4
SITRANS LC 500: Transmitter ............................................................................................8
SITRANS LC 500: Transmitter ............................................................................................8
Operating Principles ...............................................................................................................................8
The SITRANS LC 500 variable frequency oscillator .......................................................................8
The SITRANS LC 500 electrode .........................................................................................................10
The SITRANS LC 500 variable frequency oscillator .......................................................................8
The SITRANS LC 500 electrode .........................................................................................................10
Application: SITRANS LC 500 ...................................................................................................12
Level Measurement ....................................................................................................................13
Interface Measurement .............................................................................................................14
Switch action ................................................................................................................................14
Fault Signalling .............................................................................................................................15
Level Measurement ....................................................................................................................13
Interface Measurement .............................................................................................................14
Switch action ................................................................................................................................14
Fault Signalling .............................................................................................................................15
SITRANS LC 500 Electrode (Probe) Characteristics .....................................................................16
Electrode Assembly ..............................................................................................................................17
Electrode Assembly ..............................................................................................................................17
Process Connections ..................................................................................................................17
Seal Types .....................................................................................................................................17
Process Connection and Seal Configuration of SITRANS LC 500 ..................................17
Pressure and Temperature Considerations ..........................................................................18
Non-standard applications .......................................................................................................19
Seal Types .....................................................................................................................................17
Process Connection and Seal Configuration of SITRANS LC 500 ..................................17
Pressure and Temperature Considerations ..........................................................................18
Non-standard applications .......................................................................................................19
Handling Electrodes ..............................................................................................................................20
Mounting Instructions ..........................................................................................................................21
Mounting Instructions ..........................................................................................................................21
Protection for solid-state switch .............................................................................................21
Process Cautions .......................................................................................................................21
SITRANS LC 500: Standard Level Version .............................................................................22
Process Cautions .......................................................................................................................21
SITRANS LC 500: Standard Level Version .............................................................................22
Supply .............................................................................................................................................23
Cable ...............................................................................................................................................24
Selecting the correct instrumentation cable ......................................................................24
Cable ...............................................................................................................................................24
Selecting the correct instrumentation cable ......................................................................24
Connection Diagram .................................................................................................................26
Protection for solid-state switch .............................................................................................27
Grounding instructions ..............................................................................................................27
Protection for solid-state switch .............................................................................................27
Grounding instructions ..............................................................................................................27