Siemens Sitrans LR250 User manual

Operating Instructions
SITRANS LR250 (mA/HART)
12/2015Edition
Radar Transmitters

SITRANS LR250 (mA/HART)
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SITRANS
Radar Transmitters
SITRANS LR250 (mA/HART)
Operating Instructions
12/2015
A5E32220602
-AD
Introduction
1
Safety information
2
Description
3
Installing/mounting
4
Connecting
5
Commissioning
6
Remote operation
7
Parameter reference
8
Service and maintenance
9
Diagnosing and
troubleshooting
10
Technical data
11
Dimension drawings
12
Appendix A: Technical
reference
A
Appendix B: HART
communications
B
Appendix C: Certificates and
support
C
List of abbreviations
13
LCD menu structure
14

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E32220602
Ⓟ
03/2016 Subject to change
Copyright © Siemens AG 2015.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific task
in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified
personnel are those who, based on their training and experience, are capable of identifying risks and avoiding
potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may
be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this
publication is reviewed regularly and any necessary corrections are included in subsequent editions.

SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 3
Table of contents
1 Introduction................................................................................................................................................ 9
1.1 LR250 mA/HART manual usage ..............................................................................................9
1.2 Purpose of this documentation.................................................................................................9
1.3 Revision history.........................................................................................................................9
1.4 Designated use.......................................................................................................................11
1.5 Checking the consignment .....................................................................................................11
1.6 Transportation and storage.....................................................................................................11
1.7 Notes on warranty...................................................................................................................12
2 Safety information.................................................................................................................................... 13
2.1 Preconditions for safe use......................................................................................................13
2.1.1 Safety marking symbols..........................................................................................................13
2.1.2 Laws and directives ................................................................................................................13
2.1.3 FCC Conformity......................................................................................................................13
2.1.4 Industry Canada conformity....................................................................................................14
2.1.5 Conformity with European directives......................................................................................14
2.1.6 CE Electromagnetic Compatibility (EMC) Conformity ............................................................15
2.2 Improper device modifications................................................................................................15
2.3 Requirements for special applications....................................................................................16
2.4 Use in hazardous areas..........................................................................................................16
3 Description............................................................................................................................................... 19
3.1 SITRANS LR250 overview .....................................................................................................19
3.2 Programming ..........................................................................................................................20
3.3 Applications.............................................................................................................................20
3.4 Approvals and certificates.......................................................................................................20
4 Installing/mounting................................................................................................................................... 21
4.1 Basic safety information..........................................................................................................21
4.1.1 Pressure applications..............................................................................................................22
4.1.1.1 Pressure Equipment Directive, PED, 97/23/EC......................................................................23
4.2 Installation location requirements...........................................................................................24
4.3 Proper mounting .....................................................................................................................26
4.3.1 Nozzle design .........................................................................................................................27
4.3.2 Nozzle location........................................................................................................................28
4.3.3 Orientation in a vessel with obstructions ................................................................................31
4.3.4 Mounting on a Stillpipe or Bypass Pipe..................................................................................31
4.3.5 Device orientation...................................................................................................................32

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SITRANS LR250 (mA/HART)
4Operating Instructions, 12/2015, A5E32220602-AD
4.4 Installation instructions........................................................................................................... 33
4.4.1 Threaded versions................................................................................................................. 34
4.4.2 Flanged versions.................................................................................................................... 34
4.4.3 Hygienic versions................................................................................................................... 36
4.5 Disassembly........................................................................................................................... 37
5 Connecting .............................................................................................................................................. 39
5.1 Basic safety information......................................................................................................... 39
5.2 Connecting SITRANS LR250................................................................................................. 39
5.3 Wiring setups for hazardous area installations...................................................................... 43
5.3.1 Intrinsically safe wiring........................................................................................................... 44
5.3.2 Non-sparking wiring............................................................................................................... 45
5.3.3 Non-incendive wiring (US/Canada only)................................................................................ 45
5.3.4 Flameproof wiring .................................................................................................................. 46
5.3.5 Increased safety wiring.......................................................................................................... 47
5.3.6 Explosion-proof wiring (US/Canada only).............................................................................. 47
5.4 Instructions specific to hazardous area installations.............................................................. 48
5.4.1 (Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6) .......................................... 48
6 Commissioning........................................................................................................................................ 51
6.1 Basic safety information......................................................................................................... 51
6.2 Operating via the handheld programmer............................................................................... 51
6.2.1 Power up................................................................................................................................ 52
6.2.2 Handheld programmer functions............................................................................................ 52
6.2.2.1 The LCD display..................................................................................................................... 53
6.2.2.2 Handheld programmer (Part No. 7ML1930-1BK).................................................................. 55
6.2.3 Programming.......................................................................................................................... 56
6.2.3.1 Quick Start Wizard via the handheld programmer................................................................. 61
6.2.3.2 Auto False Echo Suppression................................................................................................ 64
6.2.3.3 Requesting an Echo Profile ................................................................................................... 65
6.3 Application examples............................................................................................................. 66
6.3.1 Liquid resin in storage vessel, level measurement................................................................ 67
6.3.2 Horizontal vessel with volume measurement ........................................................................ 68
6.3.3 Application with stillpipe......................................................................................................... 69
7 Remote operation.................................................................................................................................... 73
7.1 Operating via SIMATIC PDM................................................................................................. 73
7.1.1 Functions in SIMATIC PDM................................................................................................... 73
7.1.1.1 PDM function overview.......................................................................................................... 73
7.1.1.2 Features of SIMATIC PDM Rev. 6.0, SP4 or higher.............................................................. 73
7.1.1.3 Features of SIMATIC PDM Rev. 5.2, SP1............................................................................. 74
7.1.1.4 SIMATIC PDM Version.......................................................................................................... 74
7.1.2 Initial setup............................................................................................................................. 74
7.1.2.1 Deactivating buffers............................................................................................................... 74
7.1.3 Updating the Electronic Device Description (EDD)................................................................ 76
7.1.3.1 Configuring a new device....................................................................................................... 76
7.1.4 Quick Start Wizard via SIMATIC PDM................................................................................... 77
7.1.5 Changing parameter settings using SIMATIC PDM .............................................................. 82
7.1.6 Parameters accessed via pull-down menus.......................................................................... 83

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SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 5
7.1.6.1 Echo profile utilities.................................................................................................................84
7.1.6.2 Echo profile.............................................................................................................................84
7.1.6.3 View saved echo profiles........................................................................................................85
7.1.6.4 TVT Shaper.............................................................................................................................86
7.1.6.5 Auto false echo suppression...................................................................................................87
7.1.6.6 Echo setup..............................................................................................................................89
7.1.6.7 Maintenance ...........................................................................................................................90
7.1.6.8 Select analog output...............................................................................................................91
7.1.6.9 Self test...................................................................................................................................91
7.1.6.10 Loop test.................................................................................................................................91
7.1.6.11 Configuration flag reset...........................................................................................................91
7.1.6.12 Master reset............................................................................................................................92
7.1.6.13 Wear .......................................................................................................................................92
7.1.6.14 HART Communication............................................................................................................92
7.1.6.15 Process variables....................................................................................................................93
7.1.6.16 Trend.......................................................................................................................................94
7.1.6.17 Device status ..........................................................................................................................95
7.1.6.18 Update ....................................................................................................................................95
7.1.6.19 Security...................................................................................................................................96
7.2 Operating via AMS Device Manager ......................................................................................97
7.2.1 Functions in AMS Device Manager ........................................................................................97
7.2.1.1 AMS function overview...........................................................................................................97
7.2.1.2 Features of AMS Device Manager..........................................................................................98
7.2.1.3 Electronic Device Description (EDD)......................................................................................98
7.2.1.4 Configuring a new device .......................................................................................................98
7.2.1.5 Startup ....................................................................................................................................99
7.2.1.6 Pull-down menu access........................................................................................................100
7.2.1.7 Device configuration .............................................................................................................100
7.2.1.8 Quick Start Wizard via AMS Device Manager......................................................................101
7.2.2 Maintenance and diagnostics...............................................................................................109
7.2.3 Communication.....................................................................................................................110
7.2.4 Security.................................................................................................................................110
7.2.5 Device Diagnostics ...............................................................................................................111
7.2.5.1 Process variables..................................................................................................................111
7.2.5.2 Password protection .............................................................................................................112
7.2.5.3 User Manager utility..............................................................................................................113
7.2.6 AMS menu structure.............................................................................................................114
7.3 Operating via FDT (Field Device Tool).................................................................................118
7.3.1 Device Type Manager (DTM) ...............................................................................................118
7.3.2 SITRANS DTM......................................................................................................................118
7.3.3 The device EDD....................................................................................................................118
7.3.4 Configuring a new device via FDT........................................................................................119
8 Parameter reference.............................................................................................................................. 121
8.1 Alphabetical parameter list ...................................................................................................166
9 Service and maintenance ...................................................................................................................... 171
9.1 Basic safety information........................................................................................................171
9.2 Cleaning................................................................................................................................171
9.3 Maintenance and repair work ...............................................................................................172

Table of contents
SITRANS LR250 (mA/HART)
6Operating Instructions, 12/2015, A5E32220602-AD
9.3.1 Unit repair and excluded liability.......................................................................................... 173
9.3.2 Part replacement.................................................................................................................. 173
9.4 Disposal ............................................................................................................................... 175
10 Diagnosing and troubleshooting ............................................................................................................ 177
10.1 Communication troubleshooting .......................................................................................... 177
10.2 Device status icons.............................................................................................................. 177
10.3 General fault codes.............................................................................................................. 179
10.4 Operation troubleshooting.................................................................................................... 182
11 Technical data ....................................................................................................................................... 185
11.1 Power................................................................................................................................... 185
11.2 Performance......................................................................................................................... 185
11.3 Interface............................................................................................................................... 187
11.4 Mechanical........................................................................................................................... 187
11.5 Environmental...................................................................................................................... 190
11.6 Process................................................................................................................................ 190
11.7 Approvals............................................................................................................................. 191
11.8 Programmer (infrared keypad)............................................................................................. 193
12 Dimension drawings .............................................................................................................................. 195
12.1 Threaded horn antenna ....................................................................................................... 195
12.2 Threaded horn antenna with extension ............................................................................... 198
12.3 Flanged horn antenna.......................................................................................................... 200
12.4 Flanged horn antenna with extension.................................................................................. 202
12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only).................................................. 204
12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) ........................................ 206
12.7 Hygienic encapsulated antenna (2" ISO 2852 sanitary clamp) ........................................... 208
12.8 Hygienic encapsulated antenna (3" ISO 2852 sanitary clamp) ........................................... 209
12.9 Hygienic encapsulated antenna (4" ISO 2852 sanitary clamp)........................................... 210
12.10 Hygienic encapsulated antenna (DN50 nozzle/slotted nut to DIN 11851) .......................... 211
12.11 Hygienic encapsulated antenna (DN80 nozzle/slotted nut to DIN 11851) .......................... 212
12.12 Hygienic encapsulated antenna (DN100 nozzle/slotted nut to DIN 11851) ........................ 213
12.13 Hygienic encapsulated antenna (DN50 aseptic slotted nut to DIN 11864-1)...................... 214
12.14 Hygienic encapsulated antenna (DN80 aseptic slotted nut to DIN 11864-1)...................... 215
12.15 Hygienic encapsulated antenna (DN100 aseptic slotted nut to DIN 11864-1).................... 216
12.16 Hygienic encapsulated antenna (DN50 aseptic flange to DIN 11864-2)............................. 217
12.17 Hygienic encapsulated antenna (DN80 aseptic flange to DIN 11864-2)............................. 218

Table of contents
SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 7
12.18 Hygienic encapsulated antenna (DN100 aseptic flange to DIN 11864-2)............................219
12.19 Hygienic encapsulated antenna (DN50 aseptic clamp to DIN 11864-3)..............................220
12.20 Hygienic encapsulated antenna (DN80 aseptic clamp to DIN 11864-3)..............................221
12.21 Hygienic encapsulated antenna (DN100 aseptic clamp to DIN 11864-3)............................222
12.22 Hygienic encapsulated antenna (Tuchenhagen Type N).....................................................223
12.23 Hygienic encapsulated antenna (Tuchenhagen Type F)......................................................224
12.24 Threaded PVDF antenna......................................................................................................225
12.25 Threaded connection markings ............................................................................................226
12.26 Raised-Face flange...............................................................................................................227
12.27 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna ...............................230
12.28 Flat-Face flange....................................................................................................................233
12.29 Aseptic/hygienic flange DN50, DN80, DN100 for DIN 11864-2 ...........................................235
12.30 Process connection tag (pressure rated versions)...............................................................238
A Appendix A: Technical reference........................................................................................................... 239
A.1 Principles of operation..........................................................................................................239
A.2 Echo Processing...................................................................................................................239
A.2.1 Process Intelligence..............................................................................................................239
A.2.2 Echo Selection......................................................................................................................240
A.2.3 CLEF Range.........................................................................................................................243
A.2.4 Echo Threshold.....................................................................................................................243
A.2.5 Echo Lock.............................................................................................................................243
A.2.6 Auto False Echo Suppression ..............................................................................................244
A.2.7 Measurement Range ............................................................................................................245
A.2.8 Measurement Response.......................................................................................................246
A.2.9 Damping................................................................................................................................246
A.3 Analog Output.......................................................................................................................247
A.3.1 Sensor Mode.........................................................................................................................247
A.3.2 Current Output Function.......................................................................................................248
A.3.3 Loss of Echo (LOE)...............................................................................................................248
A.3.4 Fail-safe Mode......................................................................................................................249
A.4 Maximum Process Temperature Chart.................................................................................249
A.5 Process Pressure/Temperature derating curves..................................................................250
A.5.1 Pressure Equipment Directive, PED, 97/23/EC....................................................................251
A.5.2 Horn antenna........................................................................................................................252
A.5.3 Flanged horn antenna...........................................................................................................253
A.5.4 Flanged encapsulated antenna ............................................................................................257
A.5.5 PVDF antenna ......................................................................................................................259
A.5.6 Hygienic encapsulated antenna............................................................................................260
A.6 Loop power...........................................................................................................................263
A.6.1 Allowable operating area of SITRANS LR250......................................................................263
A.6.2 Curve 1 (General Purpose, Intrinsically Safe, Non-Sparking, Non-incendive).....................264
A.6.3 Curve 2 (Flameproof, Increased Safety, Explosion-proof) ...................................................264

Table of contents
SITRANS LR250 (mA/HART)
8Operating Instructions, 12/2015, A5E32220602-AD
A.7 Startup behavior................................................................................................................... 265
B Appendix B: HART communications...................................................................................................... 267
B.1 SIMATIC PDM...................................................................................................................... 267
B.2 HART Electronic Device Description (EDD)........................................................................ 267
B.3 HART Handheld 375/475..................................................................................................... 267
B.4 HART Communicator 375 menu structure........................................................................... 268
B.5 HART version....................................................................................................................... 270
B.5.1 Burst Mode........................................................................................................................... 270
B.5.2 HART Multidrop Mode ......................................................................................................... 270
C Appendix C: Certificates and support..................................................................................................... 271
C.1 Certificates........................................................................................................................... 271
C.2 Technical support................................................................................................................. 271
13 List of abbreviations............................................................................................................................... 273
14 LCD menu structure............................................................................................................................... 277
14.1 LCD menu structure............................................................................................................. 277
Glossary ................................................................................................................................................ 281
Index...................................................................................................................................................... 287

SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 9
Introduction
1
1.1
LR250 mA/HART manual usage
Note
This manual applies to the SITRANS LR250 mA/HART version only. HART
®is a registered
trademark of the HART Communication Foundation.
Follow these operating instructions for quick, trouble-free installation, and maximum accuracy
and reliability of your device.
We always welcome suggestions and comments about manual content, design, and
accessibility. Please direct your comments to:
Technical publications (mailto:[e-mail])
1.2
Purpose of this documentation
These instructions contain all information required to commission and use the device. Read the
instructions carefully prior to installation and commissioning. In order to use the device correctly,
first review its principle of operation.
The instructions are aimed at persons mechanically installing the device, connecting it
electronically, configuring the parameters and commissioning it, as well as service and
maintenance engineers.
1.3
Revision history
This history establishes the correlation between the current documentation and the valid
firmware of the device.
The documentation of this edition is applicable for the following firmware:
Edition
Firmware
rev.
PDM EDD
rev.
Date
Changes
1.0 1.00.03 1.00.03 25 Feb 2007 •Initial release
1.1 1.01.00 1.01.00 27 Jul 2007 •EDDa)/SIMATIC PDM:
View > Display
> Distance
b) correctly reported
•EDD/SIMATIC PDM: Improved render-
ing of the echo profile and TVT

Introduction
1.3 Revision history
SITRANS LR250 (mA/HART)
10 Operating Instructions, 12/2015, A5E32220602-AD
Edition
Firmware
rev.
PDM EDD
rev.
Date
Changes
2.0 1.01.01 1.01.01 10 Jun 2008 •Maintenance release of firmware and
EDD a)
3.0 1.01.01 1.01.03 17 Jun 2008 •The internal EDD revision has been
incremented
3.1 1.02.01 1.02.01 2 Apr 2009 •AMS EDD Rev. 1.02.01
•Support NAMUR NE 43
•Harmonization of menu structures and
parameter names across products
•Display indicates progress towards first
measurement
3.2 1.02.03 1.02.01 16 June 2010 •Display contrast improvement
•Antenna type parameter cannot be
modified
4.0 1.03.02 (re-
quires
HW 2.0.0)
1.02.01 16 June 2010 •Low current
HW 2.0.0 supported
4.0 1.03.03 (re-
quires
HW 2.0.0)
1.02.01 19 May 2011 •Threaded PVDF antenna supported
11/2012 1.03.04 1.02.03 31 Oct 2012 •LUI updated version (new startup,
progress bars, quick start updated to
latest version, echo profile pan/zoom
on display)
•antenna parameter removed, default
near range set at factory
08/2014 N/A N/A Aug 2014 •Flanged encapsulated antenna version
added
•Hygienic encapsulated antenna version
added
12/2015 N/A N/A Dec 2015 •Flameproof radar installation instruc-
tions added
a) Electronic Device Description
b) See
Sensor Mode (2.2.2.)
for an illustration of
Distance
.

Introduction
1.4 Designated use
SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 11
1.4
Designated use
Use the device to measure process media in accordance with the information in the operating
instructions.
Note
Use in a domestic environment
This Class A Group 1 equipment i
s intended for use in industrial areas.
In a domestic environment this device may cause radio interference.
1.5
Checking the consignment
1. Check the packaging and the delivered items for visible damage.
2. Report any claims for damages immediately to the shipping company.
3. Retain damaged parts for clarification.
4. Check the scope of delivery by comparing your order to the shipping documents for
correctness and completeness.
WARNING
Using a damaged or incomplete device
Danger of explosion in hazardous areas.
•Do not use damaged or incomplete devices.
1.6
Transportation and storage
To guarantee sufficient protection during transport and storage, observe the following:
●Keep the original packaging for subsequent transportation.
●Devices/replacement parts should be returned in their original packaging.
●If the original packaging is no longer available, ensure that all shipments are properly
packaged to provide sufficient protection during transport. Siemens cannot assume liability
for any costs associated with transportation damages.
CAUTION
Insufficient protection during storage
The packaging only provides limited protection against moisture and infiltration.
•Provide additional packaging as necessary.

Introduction
1.7 Notes on warranty
SITRANS LR250 (mA/HART)
12 Operating Instructions, 12/2015, A5E32220602-AD
1.7
Notes on warranty
The contents of this manual shall not become part of or modify any prior or existing agreement,
commitment or legal relationship. The sales contract contains all obligations on the part of
Siemens as well as the complete and solely applicable warranty conditions. Any statements
regarding device versions described in the manual do not create new warranties or modify the
existing warranty.
The content reflects the technical status at the time of publishing. Siemens reserves the right to
make technical changes in the course of further development.

SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 13
Safety information
2
2.1
Preconditions for safe use
This device left the factory in good working condition. In order to maintain this status and to
ensure safe operation of the device, observe these instructions and all the specifications
relevant to safety.
Observe the information and symbols on the device. Do not remove any information or symbols
from the device. Always keep the information and symbols in a completely legible state.
2.1.1
Safety marking symbols
In manual
On product
Description
(Label on product:
yellow back-
ground.)
WARNING: refer to accompanying documents (manual) for
details.
2.1.2
Laws and directives
Observe the test certification, provisions and laws applicable in your country during connection,
assembly and operation.
2.1.3
FCC Conformity
US Installations only: Federal Communications Commission (FCC) rules
WARNING
Improper device modifications
Danger to personnel, system and environment can result from improper modifications to the
device.
•Changes or modifications not expressly approved by Siemens could void the user’s
authority to operate the equipment.

Safety information
2.1 Preconditions for safe use
SITRANS LR250 (mA/HART)
14 Operating Instructions, 12/2015, A5E32220602-AD
Note
•
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
•
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the operating instructions, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference to radio communications, in which case the user will
be required to correct the interference at his own expense.
2.1.4
Industry Canada conformity
Canada Installations only: Industry Canada (IC) rules
NOTICE
Use on a "no-interference, no-protection" basis
The installation of the LPR/TLPR device shall be done by trained installers, in strict
compliance with the manufacturer's instructions.
•The use of this device is on a "no-interference, no-protection" basis. That is, the user
shall accept operations of high-powered radar in the same frequency band which may
interfere with or damage this device. However, devices found to interfere with primary
licensing operations will be required to be removed at the user's expense.
2.1.5
Conformity with European directives
The CE marking on the device symbolizes the conformity with the following European directives:
Electromagnetic compatibi
lity
EMC
2004/108/EC
Directive of th
e European Parliament and of the Council on the approx-
imation of the laws of the Member States relating to ele
ctromagnetic
compatibility and repealing Directive 89/336/EEC.
Low voltage directive LVD
2006/95/EC
Directive of the European Parliament and of
the Council on the harmo-
nisation of the laws of Member States relating to electr
ical equipment
designed for use within certain voltage limits.
Atmosphère explosible ATEX
94/9/EC
Directive of the European Parliament and the Council on the approx
i-
mation of
the laws of the Member States concerning equipment and
protective systems intended for use in potentially explosive atmo
s-
pheres.
Radio and telecommunic
ations
terminal equipment R&TTE
1999/5/EC
Directive of the European Parliament and of the Council on
radio
equipment and telecommunications terminal equipment and the mutual
recognition of their conformity.
The applicable directives can be found in the EC conformity declaration of the specific device.

Safety information
2.2 Improper device modifications
SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 15
2.1.6
CE Electromagnetic Compatibility (EMC) Conformity
This equipment has been tested and found to comply with the following EMC Standards:
EMC Standard
Title
CISPR 11:2009 + A1:2010/EN
55011:2009 + A1:2010, CLASS A Limits and methods of measurements of radio dis- turbance characteristics of industrial, scientific, and
medical (ISM) radio-frequency equipment.
EN 61326:2013
(IEC 61326:2012)
Electrical Equipment for Measurement, Control and
Laboratory Use – Electromagnetic Compatibility.
EN61000-4-2:2009 Electromagnetic Compatibility (EMC) Part 4-2: Test-
ing and measurement techniques – Electrostatic dis-
charge immunity test.
EN61000-4-3:2006 + A1:2008 + A2:2010 Electromagnetic Compatibility (EMC) Part 4-3: Test-
ing and measurement techniques – Radiated, radio-
frequency, electromagnetic field immunity test 2006 +
A1:2008 + A2:2010.
EN61000-4-4:2004 + A1:2010 Electromagnetic Compatibility (EMC) Part 4-4: Test-
ing and measurement techniques – Electrical fast
transient/burst immunity test.
EN61000-4-5:2006 Electromagnetic Compatibility (EMC) Part 4-5: Test-
ing and measurement techniques – Surge immunity
test.
EN61000-4-6:2010 Electromagnetic Compatibility (EMC) Part 4-6: Test-
ing and measurement techniques – Immunity to con-
ducted disturbances, induced by radio-frequency
fields.
EN61000-4-8:2010 Electromagnetic Compatibility (EMC) Part 4-8: Test-
ing and measurement techniques – Power frequency
magnetic field immunity test.
2.2
Improper device modifications
WARNING
Improper device modifications
Danger to personnel, system and environment can result from modifications to the device,
particularly in hazardous areas.
•Only carry out modifications that are described in the instructions for the device. Failure
to observe this requirement cancels the manufacturer's warranty and the product
approvals.

Safety information
2.3 Requirements for special applications
SITRANS LR250 (mA/HART)
16 Operating Instructions, 12/2015, A5E32220602-AD
2.3
Requirements for special applications
Due to the large number of possible applications, each detail of the described device versions
for each possible scenario during commissioning, operation, maintenance or operation in
systems cannot be considered in the instructions. If you need additional information not covered
by these instructions, contact your local Siemens office or company representative.
Note
Operation under special ambient conditions
We highly recommend that you contact your Siemens representative or our application
department before you operate the device under special ambient conditions as can be
encountered in nuclear power plants or when the device is used for research and
developm
ent purposes.
2.4
Use in hazardous areas
Qualified personnel for hazardous area applications
Persons who install, connect, commission, operate, and service the device in a hazardous area
must have the following specific qualifications:
●They are authorized, trained or instructed in operating and maintaining devices and systems
according to the safety regulations for electrical circuits, high pressures, aggressive, and
hazardous media.
●They are authorized, trained, or instructed in carrying out work on electrical circuits for
hazardous systems.
●They are trained or instructed in maintenance and use of appropriate safety equipment
according to the pertinent safety regulations.
WARNING
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the electrical
specifications have not been observed, the safety of the device is no longer ensured for use
in hazardous areas. There is a danger of explosion.
•Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe
circuit.
•Observe the specifications for the electrical data on the certificate.

Safety information
2.4 Use in hazardous areas
SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 17

SITRANS LR250 (mA/HART)
Operating Instructions, 12/2015, A5E32220602-AD 19
Description
3
3.1
SITRANS LR250 overview
WARNING
Loss of protection
Danger to personnel, system and environment can result from improper use of the device.
•SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise
protection provided by the device may be impaired.
SITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring of
liquids and slurries in storage vessels including high pressure and high temperature, to a range
of 20 meters (66 feet). It is ideal for small vessels, material such as chemicals, food, beverages,
solvents (including those of corrosive or aggressive nature), and low dielectric media.
The device consists of an electronic circuit coupled to an antenna and either a threaded or
flange type process connection.
This device supports HARTcommunication protocol. Signals are processed using Process
Intelligence which has been field-proven in over 1,000,000 applications worldwide (ultrasonic
and radar).