User's Manual

Table Of Contents
Table of contents
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
7
A.3.4 Fail-safe Mode ........................................................................................................................... 227
A.4 Maximum Process Temperature Chart ...................................................................................... 228
A.5 Process Pressure/Temperature derating curves ....................................................................... 229
A.5.1 Horn antenna ............................................................................................................................. 230
A.5.2 Flanged horn antenna ................................................................................................................ 231
A.5.3 Flanged encapsulated antenna .................................................................................................. 233
A.5.4 PVDF antenna............................................................................................................................ 235
A.6 Loop power ................................................................................................................................ 236
A.6.1 Allowable operating area of SITRANS LR250 ........................................................................... 237
A.6.2 Curve 1 (General Purpose, Intrinsically Safe, Non-Sparking, Non-incendive) .......................... 237
A.6.3 Curve 2 (Flameproof, Increased Safety, Explosion-proof) ........................................................ 238
A.7 Startup behavior ......................................................................................................................... 238
B Appendix B: HART communications .................................................................................................... 239
B.1 SIMATIC PDM ............................................................................................................................ 239
B.2 HART Electronic Device Description (EDD) .............................................................................. 239
B.3 HART Handheld 375/475 ........................................................................................................... 239
B.4 HART Communicator 375 menu structure ................................................................................. 240
B.5 HART version ............................................................................................................................. 242
B.5.1 Burst Mode ................................................................................................................................. 242
B.5.2 HART Multidrop Mode ............................................................................................................... 242
C Appendix C: Certificates and support .................................................................................................. 243
C.1 Certificates ................................................................................................................................. 243
C.2 Technical support ....................................................................................................................... 243
13 List of abbreviations ............................................................................................................................ 245
14 LCD menu structure ............................................................................................................................ 247
Glossary ............................................................................................................................................. 253
Index................................................................................................................................................... 259