
4.4.2 Flanged versions....................................................................................................................25
4.4.3 Hygienic versions ...................................................................................................................27
4.5 Disassembly...........................................................................................................................28
5 Connecting .................................................................................................................................................29
5.1 Basic safety information .........................................................................................................29
5.2 Connecting SITRANS LR250.................................................................................................29
5.3 Wiring setups for hazardous area installations ......................................................................31
5.3.1 Intrinsically safe wiring ...........................................................................................................32
5.3.2 Non-sparking wiring ...............................................................................................................32
5.3.3 Flameproof wiring...................................................................................................................33
5.3.4 Increased safety wiring ..........................................................................................................33
5.4 Instructions specific to hazardous area installations ..............................................................33
5.4.1 (Reference European ATEX Directive 2014/34/EU) ..............................................................33
6 Commissioning ...........................................................................................................................................35
6.1 Basic safety information .........................................................................................................35
6.2 Programming SITRANS LR250 .............................................................................................35
6.2.1 The LCD display.....................................................................................................................36
6.2.2 Device status icons ................................................................................................................37
6.2.3 Handheld programmer (Part No. 7ML1930-1BK)...................................................................38
6.2.4 Programming via the handheld programmer..........................................................................39
6.2.5 Quick Start Wizard via the handheld programmer .................................................................43
7 Remote operation .......................................................................................................................................47
7.1 SITRANS Communications: HART ........................................................................................47
8 Service and maintenance ...........................................................................................................................49
8.1 Basic safety information .........................................................................................................49
8.2 Cleaning .................................................................................................................................49
8.3 Maintenance and repair work.................................................................................................50
8.3.1 Unit repair and excluded liability ............................................................................................51
8.3.2 Part replacement....................................................................................................................51
8.4 Disposal .................................................................................................................................52
8.5 Return procedure ...................................................................................................................52
9 Technical data ............................................................................................................................................53
9.1 Power .....................................................................................................................................53
A Product documentation and support...........................................................................................................55
A.1 Product documentation ..........................................................................................................55
A.2 Technical support...................................................................................................................56
Index...........................................................................................................................................................57
Table of contents
SITRANS LR250 with mA/HART
4Compact Operating Instructions, 11/2019, A5E48453192-AA