Siemens SITRANS LR260 Operating Instructions Manual page 9

11.7 Approvals data .....................................................................................................................129
11.8 Programmer data - 7ML1930-1BK .......................................................................................129
12 Dimension drawings .................................................................................................................................131
12.1 Stainless steel aimer version ...............................................................................................131
12.2 Stainless steel threaded version ..........................................................................................133
12.3 Aluminum horn antenna .......................................................................................................136
12.4 Aluminum horn with polypropylene lens antenna and polymeric flange ..............................137
12.5 Aluminum horn antenna with aluminum aiming flange.........................................................138
12.6 Universal stainless steel slotted flange ................................................................................141
12.7 Universal polymeric flange ...................................................................................................142
12.8 Universal aluminum aimer flange.........................................................................................143
12.9 Mounting bracket .................................................................................................................145
13 Application examples................................................................................................................................147
13.1 Application Example.............................................................................................................147
A Appendix A: Technical reference..............................................................................................................151
A.1 Appendix A: Tech Ref note ..................................................................................................151
A.2 Principles of operation..........................................................................................................151
A.3 Echo Processing ..................................................................................................................151
A.3.1 Process Intelligence .............................................................................................................151
A.3.2 Time Varying Threshold (TVT) Curves ................................................................................152
A.3.3 Echo Lock ............................................................................................................................153
A.3.4 Echo Position Detection .......................................................................................................153
A.3.5 Auto False Echo Suppression..............................................................................................153
A.4 Measurement Range............................................................................................................155
A.4.1 Near Range..........................................................................................................................155
A.4.2 Far Range ............................................................................................................................155
A.5 Measurement Response ......................................................................................................155
A.6 mA Output ............................................................................................................................156
A.7 Damping...............................................................................................................................156
A.8 Loss of Echo (LOE)..............................................................................................................157
A.9 Fail-safe Mode .....................................................................................................................158
A.9.1 Fail-safe Mode .....................................................................................................................158
A.9.2 Fail-safe Timer .....................................................................................................................158
A.9.3 Fail-safe Material Level ........................................................................................................158
A.9.4 Fail-safe Level......................................................................................................................158
A.10 Process Pressure/Temperature derating curves..................................................................159
A.11 Versions with 3 bar pressure rating......................................................................................160
A.12 Loop power ..........................................................................................................................160
A.12.1 Typical Connection Drawing ................................................................................................160
SITRANS LR260 with mA/HART
Operating Instructions, 11/2019, A5E32337683-AD
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