KROHNE BM 70 M - Manual (Page 3)

BM 70 M 3
7 Design ............................................................................................................................................................................ 24
7.1 Dimensions and weights ................................................................................................................................................. 24
7.2 Replacement of the signal converter .............................................................................................................................. 25
7.3 Field assembly ................................................................................................................................................................ 26
7.4 Materials of construction ................................................................................................................................................. 26
7.4.1 Signal converter .............................................................................................................................................................. 26
7.4.2 Flange system................................................................................................................................................................. 27
7.4.3 Seals and gaskets........................................................................................................................................................... 27
7.5
Process connection......................................................................................................................................................... 27
7.6 Electrical connection ....................................................................................................................................................... 28
7.7 Terminating resistor for the RS 485 interface ................................................................................................................. 30
8 User interface ................................................................................................................................................................ 30
8.1 Local display ................................................................................................................................................................... 30
8.2 Function of the keys........................................................................................................................................................ 31
8.3 Operator control concept ................................................................................................................................................ 32
8.4 Table of settable functions (Versions 3.00, 3.01, 3.02, 3.03, 4.02, 4.03)........................................................................ 34
8.5 Configuration examples .................................................................................................................................................. 39
8.5.1 Level measurement (example) ....................................................................................................................................... 40
8.5.2 Volume measurement (example).................................................................................................................................... 40
8.6
Description of functions................................................................................................................................................... 41
8.6.1 Choice of units ................................................................................................................................................................ 41
8.6.2 Vessel (tank) height ........................................................................................................................................................ 43
8.6.3 Block distance, antenna type and antenna extension..................................................................................................... 44
8.6.4 Distance piece ................................................................................................................................................................ 44
8.6.5 Stilling well ...................................................................................................................................................................... 45
8.6.6 Reference and tank bottom offsets ................................................................................................................................. 45
8.6.7 Display ............................................................................................................................................................................ 47
8.6.8 Current output I ............................................................................................................................................................... 48
8.6.9 Communication interfaces .............................................................................................................................................. 49
8.6.10 Display ............................................................................................................................................................................ 50
8.6.11 Auto tank height .............................................................................................................................................................. 51
8.6.12 Empty spectrum .............................................................................................................................................................. 51
8.6.13 Time constant and tracking speed .................................................................................................................................. 54
8.6.14 Multiple reflections and block distance detection ............................................................................................................ 54
8.6.15 Tank bottom tracing system............................................................................................................................................ 55
8.6.16 Tank type, movement of product surface........................................................................................................................ 56
8.6.17 Switching output.............................................................................................................................................................. 56
8.7
Functional checks ........................................................................................................................................................... 59
8.7.1 Main menu 2.0 Test functions......................................................................................................................................... 59
8.7.2 Hardware test.................................................................................................................................................................. 59
8.7.3 Test of current output...................................................................................................................................................... 60
8.7.4 Test of switching output .................................................................................................................................................. 61
8.7.5 Display of firmware version............................................................................................................................................. 61
8.8
Pointers and error messages during measurement ........................................................................................................ 61
8.8.1 Different kinds of messages............................................................................................................................................ 61
8.8.2 Pointers provided by 6 markers during measurement .................................................................................................... 62
8.8.3 Error messages and their representation in display and at outputs ................................................................................ 63
8.8.4 Error display during measurement.................................................................................................................................. 64
8.8.5 Error list........................................................................................................................................................................... 64
8.9
Messages on start-up ..................................................................................................................................................... 64
8.10 Faults and symptoms during start-up and measurement................................................................................................ 64
8.11 Calculation of the measured value.................................................................................................................................. 70
8.12 User program PC-CAT for Windows............................................................................................................................... 70
9 Power supply................................................................................................................................................................. 71
9.1 Options, technical data ................................................................................................................................................... 71
9.2 Fuses .............................................................................................................................................................................. 72
9.3 Changeover of operating voltage and replacement of fuses .......................................................................................... 72
9.4 Advice on safety.............................................................................................................................................................. 73
10 Certificates and approvals ........................................................................................................................................... 75
10.1 Declaration of Conformity ............................................................................................................................................... 75
11 Ordering information .................................................................................................................................................... 76
12 External standards, codes and directives .................................................................................................................. 77
13 Quality assurance ......................................................................................................................................................... 77