User's Manual

iv
mmmmm
Table of Cont ent s
Appendix D: Technical Reference .............................................................................126
Principles of Operation ....................................................................................................................126
Echo Processing ...............................................................................................................................126
Process Intelligence ...............................................................................................................126
Echo Selection .........................................................................................................................127
Measurement Range .............................................................................................................131
Measurement Response .......................................................................................................131
Analog Output ....................................................................................................................................132
Sensor Mode ............................................................................................................................133
Current Output Function ........................................................................................................133
Loss of Echo (LOE) ..................................................................................................................134
Maximum Process Temperature Chart .......................................................................................135
Flange Adapter versions of SITRANS LR250 ....................................................................135
Process Pressure/Temperature derating curves .....................................................................136
Horn Antenna or Wave Guide ..............................................................................................137
1.5" and 2" Threaded Versions ....................................................................................137
50A, 80A and 100A Flanged Versions: JIS 10 k ..................................................... 137
DN50, DN80, DN100, and DN150 Flanged Versions: PN16 ..................................138
DN50, DN80, DN100, and DN150 Flanged Versions: PN40 ..................................138
2", 3", and 4" Flanged Versions: 150 lb .......................................................................139
2", 3", and 4" Flanged Versions: 300 lb .......................................................................139
Loop power .........................................................................................................................................140
Typical Connection Drawing ................................................................................................140
Allowable operating area of SITRANS LR250 ..................................................................140
Startup Behavior .....................................................................................................................141
Appendix E: Application Examples ............................................................................142
Liquid resin in storage vessel, level measurement ................................................................. 142
Horizontal vessel with volume measurement........................................................................... 143
Application with Stillpipe................................................................................................................ 144
Appendix F: HART Communications .........................................................................146
SIMATIC PDM ...................................................................................................................................146
HART Electronic Device Description (EDD) ................................................................................146
HART Communicator 375 Menu Structure .................................................................................147
HART Version .....................................................................................................................................149
Burst Mode ...............................................................................................................................149
HART Multidrop Mode ...........................................................................................................149
Appendix G: ATEX Certificates ...................................................................................150
ATEX Certificate SIRA 06ATEX2358X ...........................................................................................150
ATEX Certificate SIRA 08ATEX1301X ...........................................................................................153
Appendix H: Firmware Revision History ...................................................................156
Glossary ..........................................................................................................................157
Index ................................................................................................................................161
LCD menu structure ......................................................................................................165