Siemens Sitrans LR250 User manual

SITRANS
Radar Transmitters
SITRANS LR250 (PROFIBUS PA)
Operating Instructions 0 /2011

© Siemens AG 2011
Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of
others, and to protect the product and the connected equipment. These warning notices are
accompanied by a clarification of the level of caution to be observed.
Qualified Personnel: This device/system may only be set up and operated in conjunction with this
manual. Qualified personnel are only authorized to install and operate this equipment in accordance with
established safety practices and standards.
Unit Repair and Excluded Liability:
•The user is responsible for all changes and repairs made to the device by the user or the user’s
agent.
•All new components are to be provided by Siemens Milltronics Process Instruments.
•Restrict repair to faulty components only.
•Do not reuse faulty components.
Warning: Cardboard shipping package provides limited humidity and moisture protection. This product
can only function properly and safely if it is correctly transported, stored, installed, set up, operated, and
maintained.
This product is intended for use in industrial areas. Operation of this equipment in a residential area
may cause interference to several frequency based communications.
Note: Always use product in accordance with specifications.
Copyright Siemens AG 2011. All Rights
Reserved
Disclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to purchase
authorized bound manuals, or to view electronic
versions as designed and authored by Siemens
Milltronics Process Instruments. Siemens Milltronics
Process Instruments will not be responsible for the
contents of partial or whole reproductions of either
bound or electronic versions.
While we have verified the contents of this
manual for agreement with the
instrumentation described, variations remain
possible. Thus we cannot guarantee full
agreement. The contents of this manual are
regularly reviewed and corrections are
included in subsequent editions. We welcome
all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments.
Contact SMPI Technical Publications European Authorized Representative
at the following address:
Technical Publications Siemens AG
Siemens AG Industry Sector
Siemens Milltronics Process Instruments 76181 Karlsruhe
1954 Technology Drive, P.O. Box 4225 Deutschland
Peterborough, Ontario, Canada, K9J 7B1
Email: [e-mail]
•For a selection of Siemens Milltronics level measurement manuals, go to:
www. siemens.com/processautomation. Under Process Instrumentation, select
Level
Measurement
and then go to the manual archive listed under the product family.
•For a selection of Siemens Milltronics weighing manuals, go to:
www. siemens.com/processautomation. Under Weighing Technology, select
Continuous
Weighing Systems
and then go to the manual archive listed under the product family.

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Table of Contents
Table of Contents
Safety Notes .............................................................................................................................................1
Safety marking symbols ..............................................................................................................1
FCC Conformity ........................................................................................................................................1
CE Electromagnetic Compatibility (EMC) Conformity ....................................................................2
The Manual ...............................................................................................................................................2
Application Examples ...................................................................................................................3
Technical Support ....................................................................................................................................3
Abbreviations and Identifications .......................................................................................................3
SITRANS LR250 Overview .................................................................................................5
Specifications ......................................................................................................................7
Power............................................................................................................................................. 7
Performance................................................................................................................................. 7
Interface ........................................................................................................................................ 8
Mechanical................................................................................................................................... 8
Environmental .............................................................................................................................. 9
Process........................................................................................................................................ 10
Approvals.................................................................................................................................... 10
Programmer (infrared keypad) .............................................................................................. 11
Dimensions .............................................................................................................................................11
Threaded Horn Antenna with extension ...............................................................................12
Threaded PVDF Antenna ...........................................................................................................13
Flanged Horn ................................................................................................................................14
Raised Face Flange per EN 1092-1 .........................................................................................15
Flat Faced Flange ........................................................................................................................17
Installation ......................................................................................................................... 19
Pressure Applications ..........................................................................................................................19
Pressure Equipment Directive, PED, 97/23/EC ...............................................................................20
Mounting location .................................................................................................................................20
Nozzle design ...............................................................................................................................20
Nozzle location .............................................................................................................................20
Orientation in a vessel with obstructions .............................................................................21
Mounting on a Stillpipe or Bypass Pipe ................................................................................22
Installation Instructions .......................................................................................................................23
Wiring ..................................................................................................................................24
Power .......................................................................................................................................................24
Connecting SITRANS LR250 ...............................................................................................................24
Basic PLC configuration with PROFIBUS PA ........................................................................25
Wiring Setups for hazardous area installations ............................................................................25
PLC configuration with PROFIBUS PA for hazardous areas ............................................26
Intrinsically Safe wiring........................................................................................................... 26
Non-Sparking/Energy Limited ................................................................................................28
Non-incendive wiring (only for USA/Canada) ....................................................................28
Instructions specific to hazardous area installations ..................................................................29
Operating via the handheld programmer .....................................................................30
Activating SITRANS LR250 .................................................................................................................30
The LCD Display ...........................................................................................................................30
Handheld Programmer ...............................................................................................................31
Programming SITRANS LR250 .................................................................................................32

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Table of Cotents
Quick Start Wizard via the handheld programmer .......................................................................35
Auto False Echo Suppression ............................................................................................................37
Requesting an Echo Profile ................................................................................................................37
Device Address ......................................................................................................................................38
Level application example ...................................................................................................................38
Operating via SIMATIC PDM ..........................................................................................40
Functions in SIMATIC PDM ................................................................................................................40
Features of SIMATIC PDM Rev. 6.0, SP4 ...............................................................................40
Features of SIMATIC PDM Rev. 5.2, SP1 ...............................................................................41
SIMATIC PDM Version ...............................................................................................................41
Electronic Device Description (EDD) ......................................................................................41
Configuring a new device .........................................................................................................41
Quick Start Wizard via SIMATIC PDM .............................................................................................42
Quick Start .....................................................................................................................................42
Linearization .................................................................................................................................45
Configuring a stillpipe application ...........................................................................................48
Changing parameter settings using SIMATIC PDM .....................................................................48
Parameters accessed via pull-down menus ........................................................................49
Diagnostics ...................................................................................................................................58
Security ..........................................................................................................................................62
Operating via FDT (Field Device Tool) ...........................................................................63
Device Type Manager (DTM) .............................................................................................................63
SITRANS DTM .......................................................................................................................................63
The instrument EDD ..............................................................................................................................63
Configuring a new device via FDT ....................................................................................................63
Parameter Reference .......................................................................................................64
Quick Start .................................................................................................................................. 64
Setup ............................................................................................................................................ 65
Identification..................................................................................................................... 65
Device ................................................................................................................................ 65
Sensor................................................................................................................................ 65
Linearization ..................................................................................................................... 70
Signal Processing............................................................................................................ 74
AIFB1.................................................................................................................................. 83
AIFB2.................................................................................................................................. 87
Measured Values............................................................................................................ 87
Diagnostics................................................................................................................................. 87
Echo Profile....................................................................................................................... 87
Fault Reset ........................................................................................................................ 88
Electronics Temperature............................................................................................... 88
Condensed Status........................................................................................................... 88
Allocation .......................................................................................................................... 90
Peak Values...................................................................................................................... 92
Service ........................................................................................................................................ 93
Master Reset.................................................................................................................... 93
Remaining Device Lifetime ........................................................................................... 94
Remaining Sensor Lifetime........................................................................................... 97
Service Schedule ......................................................................................................... 100
Calibration Schedule ................................................................................................... 103
Manufacture Date........................................................................................................ 106
Powered Hours............................................................................................................. 106

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Table of Contents
Power-on Resets.......................................................................................................... 106
LCD Fast Mode.............................................................................................................. 106
LCD Contrast.................................................................................................................. 106
Communication....................................................................................................................... 106
Device Address ............................................................................................................ 106
PROFIBUS Ident Number ........................................................................................... 107
Security..................................................................................................................................... 107
Remote Access............................................................................................................. 107
Local Access ................................................................................................................. 107
Language.................................................................................................................................. 108
Appendix A: Alphabetical Parameter List .................................................................. 109
Appendix B: Troubleshooting ....................................................................................... 112
Communication Troubleshooting ....................................................................................................112
Device Status Icons ............................................................................................................................113
General Fault Codes ...........................................................................................................................115
Operation Troubleshooting ...............................................................................................................119
Appendix C: Maintenance ............................................................................................ 121
Unit Repair and Excluded Liability ..................................................................................................121
Antenna or electronics/enclosure replacement ...............................................................121
Appendix D: Technical Reference ............................................................................... 122
Principles of Operation ......................................................................................................................122
Echo Processing ..................................................................................................................................122
Process Intelligence .................................................................................................................122
Echo Selection ...........................................................................................................................123
Measurement Range ................................................................................................................127
Measurement Response ...................................................................................................................127
Damping .................................................................................................................................................128
Loss of Echo (LOE) ...............................................................................................................................128
LOE Timer ....................................................................................................................................128
Fail-safe Behavior .....................................................................................................................129
Maximum Process Temperature Chart ..........................................................................................130
Process Pressure/Temperature derating curves ........................................................................131
Pressure Equipment Directive, PED, 97/23/EC .............................................................................131
Horn Antenna or Wave Guide ................................................................................................132
1.5" and 2" Threaded Versions.....................................................................................132
2" Threaded PVDF Antenna Versions........................................................................132
50A, 80A and 100A Flanged Versions: JIS 10K........................................................133
DN50, DN80, DN100, and DN150 Flanged Versions: PN16...................................133
DN50, DN80, DN100, and DN150 Flanged Versions: PN40...................................133
2", 3", and 4" Flanged Versions: 150 lb ..........................................................134
2", 3", and 4" Flanged Versions: 300 lb........................................................................134
Appendix E: Application Examples ............................................................................. 135
Liquid resin in storage vessel, level measurement ........................................................135
Horizontal vessel with volume measurement ..................................................................136
Application with Stillpipe .......................................................................................................137
Appendix F: PROFIBUS PA Profile Structure ............................................................. 139
PROFIBUS Level Device Design ......................................................................................................139
Block Model ..........................................................................................................................................139
Description of the blocks .........................................................................................................140

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Table of Cotents
Appendix G: Communications via PROFIBUS PA ..................................................... 145
Device Configuration tool ..................................................................................................................145
SIMATIC PDM ............................................................................................................................145
Network Configuration ......................................................................................................................145
The GSD file ................................................................................................................................145
Bus Termination ...................................................................................................................................146
Power Demands ..................................................................................................................................146
PROFIBUS address .............................................................................................................................146
Operating as a Profile Device ...........................................................................................................147
Configuring a device .................................................................................................................147
Configuring PROFIBUS PA with an S7-300/ 400 PLC ........................................................147
Cyclic versus Acyclic Data ................................................................................................................148
Cyclic Data ..................................................................................................................................148
Status Byte ...........................................................................................................................................149
Condensed Status ...............................................................................................................................150
Diagnostics ...........................................................................................................................................152
Diagnosis reply (available cyclically) ....................................................................................152
Diagnosis Object (available cyclically or acyclically) .......................................................153
Condensed Mode Diagnosis ..................................................................................................154
Acyclic Extended Diagnostics (General Fault Codes) ......................................................155
Acyclic Data ..........................................................................................................................................158
Appendix H: Firmware Revision History .................................................................... 159
Glossary ............................................................................................................................ 161
Index .................................................................................................................................. 165
LCD menu structure ....................................................................................................... 169

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 1
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SITRANS LR250
Safety Notes
Special attention must be paid to warnings and notes highlighted from the rest of the text
by grey boxes.
Safety marking symbols
FCC Conformity
US Installations only: Federal Communications Commission (FCC) rules
WARNING symbol relates to a caution symbol on the product, and
means that failure to observe the necessary precautions can result
in death, serious injury, and/or considerable material damage.
WARNING symbol used when there is no corresponding caution
symbol on the product, means that failure to observe the necessary
precautions can result in death, serious injury, and/or considerable
material damage.
Note: means important information about the product or that part of the operating
manual.
In manual On
product Description
Earth (ground) Terminal
Protective Conductor Terminal
(Label on product: yellow background.) WARNING: refer
to accompanying documents (manual) for details.
WARNING: Changes or modifications not expressly approved by
Siemens Milltronics could void the user’s authority to operate the
equipment.
Notes:
• 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 instruction manual, 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.

Page 2 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04
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SITRANS LR250
CE Electromagnetic Compatibility (EMC) Conformity
This equipment has been tested and found to comply with the following EMC Standards:
The Manual
This manual will help you set up your SITRANS LR250 for optimum performance. We
always welcome suggestions and comments about manual content, design, and
accessibility. Please direct your comments to [email protected].
For other Siemens Milltronics level measurement manuals, go to:
www.siemens.com/level, and look under Level Measurement.
EMC Standard Title
CISPR 11:2004/EN
55011:1998+A1:1999&A2:2002, CLASS B
Limits and methods of measurements of radio
disturbance characteristics of industrial, scientific,
and medical (ISM) radio-frequency equipment.
EN 61326:1997+A1:1998+A2:2001+A3:2003
(IEC 61326:2002)
Electrical Equipment for Measurement, Control and
Laboratory Use – Electromagnetic Compatibility.
EN61000-4-2:2001
Electromagnetic Compatibility (EMC) Part 4-2:Testing
and measurement techniques – Electrostatic
discharge immunity test.
EN61000-4-3:2002
Electromagnetic Compatibility (EMC) Part 4-3:
Testing and measurement techniques – Radiated,
radio-frequency, electromagnetic field immunity test.
EN61000-4-4:2004
Electromagnetic Compatibility (EMC) Part 4-4:
Testing and measurement techniques – Electrical
fast transient/burst immunity test.
EN61000-4-5:2001
Electromagnetic Compatibility (EMC) Part 4-5:
Testing and measurement techniques – Surge
immunity test.
EN61000-4-6:2004
Electromagnetic Compatibility (EMC) Part 4-6:
Testing and measurement techniques – Immunity to
conducted disturbances, induced by radio-frequency
fields.
EN61000-4-8:2001
Electromagnetic Compatibility (EMC) Part 4-8:
Testing and measurement techniques – Power
frequency magnetic field immunity test.
Notes:
• This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based
communications.
• Please follow the installation and operating procedures for a quick, trouble-free
installation and to ensure the maximum accuracy and reliability of your SITRANS LR250.
• This manual applies to the SITRANS LR250 (PROFIBUS PA) only.

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 3
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SITRANS LR250
Application Examples
The application examples used in this manual illustrate typical installations using
SITRANS LR250. (See
Appendix E: Application Examples on page 135.) Because there is
often a range of ways to approach an application, other configurations may also apply.
In all examples, substitute your own application details. If the examples do not apply to
your application, check the applicable parameter reference for the available options.
Technical Support
Support is available 24 hours a day.
To find your local Siemens Automation Office address, phone number and fax number go
to:
www.siemens.com/automation/partner
• Click on the tab Contact, select Service, then click Service again to find your
product group (+Automation Technology > +Sensor Systems >+Process
Instrumentation > +Level Measurement > +Continous). Select Radar.
• Select the country followed by the City/Region.
• Select Service: Technical Support.
For on-line technical support go to:
www.siemens.com/automation/support-request
• Enter the device name (SITRANS LR250) or order number, then click on Search,
and select the appropriate product type. Click on Next.
• You will be prompted to enter a keyword describing your issue. Then either
browse the relevant documentation, or click on Next to email a detailed
description of your issue to Siemens Technical Support staff.
Siemens IA/DT Technical Support Center: phone [phone]
Abbreviations and Identifications
Short
form Long Form Description Units
AIFB Analog Input Function Block
CE / FM /
CSA
Conformitè Europèene / Factory
Mutual / Canadian Standards
Association
safety approval
CiInternal capacitance F

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SITRANS LR250
DCS Distributed Control System control room apparatus
dK dielectric constant
EDD Electronic Device Description
IiInput current mA
IoOutput current mA
IS Intrinsically Safe safety approval
LiInternal inductance mH
mH milliHenry 10-3 Henry
μFmicroFarad 10-6 Farad
μs microsecond 10-6 Second
PA Process Automation
(PROFIBUS)
PED Pressure Equipment Directive safety approval
pF pico Farads 10-12 Farad
ppm parts per million
PV Primary Valuea) measured value
PVDF Polyvinylidene fluoride
SELV Safety extra low voltage
SV Secondary Valuea) equivalent value
TB Transducer Block
TVT Time Varying Threshold sensitivity threshold
UiInput voltage V
UoOutput voltage V
a) The output from the Level Transducer Block can be called the Primary Value (or
Secondary Value). When it becomes the input to the AIFB, it is called the
Process Variable.
Short
form Long Form Description Units (cont’d)

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 5
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SITRANS LR250
SITRANS LR250 Overview
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 m (66 ft). It is ideal for small vessels and low dielectric media.
The instrument consists of an electronic component coupled to a horn antenna and either
a threaded or flange type process connection.
SITRANS LR250 supports PROFIBUS PA communication protocol. Signals are processed
using Process Intelligence which has been field-proven in over 1,000,000 applications
worldwide (ultrasonic and radar). This device supports acyclic communications from both
a PROFIBUS Class I and Class II master.
Programming
SITRANS LR250 is very easy to install and configure via a graphical local user interface
(LUI). You can modify the built in parameters either locally via the Siemens infrared hand-
held programmer, or from a remote location using one of the following options:
• SIMATIC PDM
• FDT/DTM platform (such as PACTware™ or FieldCare)
Applications
• liquids and slurries
• bulk storage vessels
• simple process vessels
WARNING: SITRANS LR250 is to be used only in the manner outlined in
this manual, otherwise protection provided by the device may be
impaired.

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SITRANS LR250
Approvals and Certificates
SITRANS LR250 is available with General Purpose approval, or for hazardous areas. In all
cases, check the nameplate on your instrument, and confirm the approval rating.
Process Connections
A wide range of process connections and antenna options is available to suit virtually
any vessel configuration.
Note: For further details see Approvals on page 10.
Application
Type
LR250
Version Approval Rating Valid for: Wiring
Non-
hazardous
General
Purpose CSAUS/C, FM, CE, C-TICK, KC N. America,
Europe
See
page 24
Hazardous
Intrinsically
Safe
ATEX II 1 G, EEx ia IIC T4
ATEX II 1 D, EEx tD A20 IP67 T90 oCEurope
See
page 26
IECEx SIR 05.0031X, Ex ia IIC T4
Ex tD A20 IP67 T90 oCInternational
FM/CSA
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Class III T4
US/Canada
Br-Ex ia IIC T4 Brazil
NEPSI Ex ia IIC T4/ DIP A20 TA, T90 oC IP67 China
Non-Sparking/
Energy Limited
ATEX II 3 G Ex nA/nL IIC T4 Gc Europe See
page 28
NEPSI Ex nA II T4/ Ex nL IIC T4 China
Non-incendive FM/CSA
Class I, Div. 2, Groups A, B, C, D T5 US/Canada See page 28

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 7
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Specifications
Specifications
Power
Bus powered Per IEC 61158-2 (PROFIBUS PA)
Current consumed 15 mA
Performance
Reference operating conditions according to IEC 60770-1
• ambient temperature +15 to +25 oC (+59 to +77 oF)
• humidity 45% to 75% relative humidity
• ambient pressure 860 to 1060 mbar g (86,000 to 106,000 N/m2 g)
Measurement Accuracy (measured in accordance with IEC 60770-1)
• Maximum measured error
- 2" threaded PVDF antenna,
< 500 mm from sensor ref. point = 25 mm (1") including hysteresis and non-
repeatability
remainder of range = 5 mm (0.2") including hysteresis and non-
repeatability
- all other versions = 5 mm (0.2") including hysteresis and non-
repeatability
Frequency K-band
Max. measurement range1)
- 1.5" antenna and
2" threaded PVDF antenna 10 m (32.8 ft)
- all other versions 20 m (65.6 ft)
Min. detectable distance 50 mm (1.97") from end of antenna2)
Notes:
• Siemens Milltronics makes every attempt to ensure the accuracy of these
specifications but reserves the right to change them at any time.
General Purpose:
Intrinsically Safe:
Non-Sparking/Energy Limited:
Non-incendive:
1) From sensor reference point: see
Threaded Horn Antenna with extension on
page 12,
Threaded PVDF Antenna on page 13, and Flanged Horn on page 14.
2) Minimum range is antenna length + 50 mm (2"). See
Dimensions on page 11.

Page 8 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04
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Specifications
Update time minimum 1 second, depending on settings for
Response Rate (2.3.8.1.) and LCD Fast Mode (4.9.).
Influence of ambient temperature <0.003% / K (average over full temperature range,
referenced to maximum range)
Dielectric constant of material measured
• dK > 1.6, antenna and application dependent1)
Memory
• non-volatile EEPROM
• no battery required.
Interface
Communication
• PROFIBUS PA
Configuration
• remote Siemens SIMATIC PDM
• local Siemens infrared handheld programmer
Display (local)2) graphic LCD, with bar graph representing level)
Mechanical
Process Connections:
• threaded connection 1.5” NPT (ANSI/ASME B1.20.1), R (BSPT, EN 10226-1) or
G (BSPP, EN ISO 228-1)
or 2" NPT (ANSI/ASME B1.20.1), R (BSPT, EN 10226-1) or
G (BSPP, EN ISO 228-1)
• flange connection (flat faced)
2", 3", 4" (ASME 150 lb, 300 lb)
DN50, DN80, DN100 (PN16, PN40)
50A, 80A, 100A (JIS 10K)
materials 316 L /1.4404 stainless steel
or 316 L /1.4435 stainless steel, optional alloy N06022/
2.4602 (Hastelloy®C-22 or equivalent)
• flange connection (raised face)
DN50, DN80, DN100 (PN10/16, PN25/40)
DN150 (PN10/16, PN 25/40)
per EN 1092-1 B1
materials 1.4404 or 1.4435 stainless steel, optional Alloy N06022/
2.4602 (Hastelloy®C-22 or equivalent)
1) For 1.5" (40 mm) antenna and 2" (50 mm) threaded PVDF antenna, the dK is limited
to 3 unless a stillpipe is used.
2) Display quality will be degraded in temperatures below –25 °C (–13 °F) and above
+65 °C (+149 °F).

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 9
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Specifications
Antenna:
• horn standard 1.5" (40 mm), 2" (50 mm), 3" (80 mm), and
4" (100 mm) horn, optional 100 mm (4") horn extension
materials 316L stainless steel with PTFE emitter
optional Alloy N06022/2.4602 (Hastelloy®C-22 or
equivalent) with PTFE emitter
• threaded PVDF antenna 2" (50 mm)
wetted materials PVDF (Polyvinylidene fluoride)
Enclosure
• construction aluminum, polyester powder-coated
• conduit entry 2 x M20x1.5, or 2 x ½" NPT
• ingress protection Type 4X/NEMA 4X, Type 6/NEMA 6, IP 67, IP68 (see note
below)
Weight (excluding extensions)
• 1.5" threaded connection with 1.5" horn antenna approx. 5.1kg
(11.2 lb)
• 2" threaded connection with 2" horn antenna approx. 5.5 kg
(12.1 lb)
• 2" threaded PVDF antenna approx. 3.3 kg
(7.27 lb)
• DN50/PN16 or 2" 150 lb flat faced flange with 2" horn antenna approx. 8 kg
(17.6 lb)
• DN100/PN40 or 4" ASME 300 lb flat faced flange with 4" horn antennaapprox.
17.4 kg (38.3 lb)
• DN50/PN16 raised face flange with 2" horn antenna approx. 6 kg
(13.2 lb)
• DN100/PN40 raised face flange with 4" horn antenna approx.
11.3 kg (24.9 lb)
Environmental
• location indoor/ outdoor
• altitude 5000 m (16,404 ft) max.
• ambient temperature −40 to +80 °C (−40 to +176 °F)
• relative humidity suitable for outdoor
Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure
(see note above)
• installation category I
• pollution degree 4
Notes:
• Check Approvals on page 10, for the specific configuration you are about to use or
install.
• Use appropriate conduit seals to maintain IP or NEMA rating.

Page 10 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04
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Specifications
Process
• Temperature at process connection
Standard Horn antenna:
- with FKM O-ring −40 to +200 °C (−40 to +392 °F)
- with FFKM O-ring −20 to +200 °C (−4 to +392 °F)
2" NPT / BSPT / G Threaded PVDF antenna:
−40 to +80 °C (−40 to +176 °F)
• pressure (vessel) Refer to
Process Pressure/Temperature
derating curves
on page 131.
Approvals
•General CSA
US/C, FM, CE, C-TICK, KC
• Radio Europe (R&TTE), FCC, Industry Canada
• Hazardous
Intrinsically Safe1) (Europe) ATEX II 1G, EEx ia IIC T4
ATEX II 1D, EEx tD A20 IP67 T90 °C
(International) IECEx SIR 05.0031X,
Ex ia IIC T4,
Ex tD A20 IP67 T90 °C
(US/Canada) FM/CSA
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Class III T4
(Brazil) INMETRO TUV 11.0216 X, Ex ia IIC T4 Ga
Ex ta IIIC T90 °C Da IP67
TUV #: OCP 0004
(China) NEPSI Ex ia IIC T4/ DIP A20 TA, T90 oC IP67
Non-sparking/Energy Limited2)
(Europe) ATEX II 3 G Ex nA/nL IIC T4 Gc
(China) NEPSI Ex nA II T4/ Ex nL IIC T4
Non-incendive3) (US/Canada) FM/CSA Class I, Div. 2,
Groups A, B, C, D T5
Note: The maximum temperature is dependent on the process connection, antenna
materials, and vessel pressure. For more detailed information see Maximum Process
Temperature Chart on page 130, and Process Pressure/Temperature derating curves on
page 131.
Note: The device nameplate lists the approvals that apply to your device.
1) See
Intrinsically Safe wiring on page 26
2) See
Non-Sparking/Energy Limited on page 28.
3) See
Non-incendive wiring (only for USA/Canada) on page 28.

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 11
mmmmm
Specifications
Programmer (infrared keypad)
Siemens Milltronics Infrared IS (Intrinsically Safe) Handheld Programmer for hazardous
and all other locations (battery is non-replaceable)
• approvals FM/CSA Class I, II, III, Div. 1, Gr. A to G T6
CE
ATEX II 1GD Ex ia IIC T4 Ga
Ex iaD 20 T135 °C
IECEx SIR 09.0073 Ex ia IIC T4 Ga
Ex iaD 20 T135 °C
INMETRO Br-Ex ia IIC T4
• ambient temperature −20 to +50 °C (−5 to +122 °F)
• interface proprietary infrared pulse signal
• power 3 V lithium battery
• weight 150 g (0.3 lb)
• color black
• Part Number 7ML1930-1BK
Dimensions
Threaded Horn dimensions
Notes:
• Battery is non-replaceable with a lifetime expectancy of 10 years in normal use.
• To estimate the lifetime expectancy, check the nameplate on the back for the serial
number. The first six numbers show the production date (mmddyy), for example,
serial number 032608101V.
Nominal Horn Size Horn O.D. Horn Height to sensor
reference pointa)
a) Height from bottom of horn to sensor reference point as shown: see
Threaded
Horn Antenna with extension
on page 12.
Beam Angleb)
b) – 3dB in the direction of the polarization axis (see
Polarization reference point
on page 21 for an illustration).
Measurement
Range
40 mm (1.5") 39.8 mm (1.57”) A135 mm (5.3") 19 degrees 10 m (32.8 ft)
50 mm (2”) 47.8 mm (1.88”) B166 mm (6.55”) 15 degrees
20 m (65.6 ft)80 mm (3”) 74.8 mm (2.94”) C199 mm (7.85”) 10 degrees
100 mm (4”) 94.8 mm (3.73”) D254 mm (10”) 8 degrees

Page 12 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04
mmmmm
Specifications
Threaded Horn Antenna with extension
See table under Dimensions on page 11 for horn height to sensor reference point (A, B, C,
or D).
Notes:
• Process temperature and pressure capabilities are dependent upon information on
the process connection tag. Reference drawing listed on the Tag is available on the
product page of our website at www.siemens.com/LR250, under Support /
Installation drawings. Additional information on process connections is available
on the Installation Drawings page under Process Connection Diagrams.
• Signal amplitude increases with horn diameter, so use the largest practical size.
• Optional extensions can be installed between the flange and the antenna.
threaded cover
enclosure/
electronics
196 mm
(7.7")
154 mm
(6.1")
167 mm
(6.6")
1/2" NPT cable entry
(or alternatively, M20 cable gland)
sensor
ref.
point
retaining
collar
90 mm
(3.5")
159 mm
(6.26")
50 mm
(2.0")
horn
28 mm (1.1"") optional
100 mm (4.0 ")
horn extension
process
connection tag
horn
O.D.
A
B
C
D

7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 13
mmmmm
Specifications
Threaded PVDF Antenna
1)
Threaded PVDF Antenna dimensions
Threaded Connection Markings
With the exception of the threaded PVDF antenna, threaded connection markings are
found on the flat face/faces of the process connection.
Serial number: a unique number allotted to each flange, including the date of
manufacture (MMDDYY) followed by a number from 001 to 999.
1) The color of the antenna may vary.
Nominal Antenna
Size Antenna O.D. Height to sensor
reference pointa)
a) Height from bottom of horn to sensor reference point as shown: see
Threaded
PVDF Antenna
on page 13.
Beam Angleb)
b) – 3dB in the direction of the polarization axis (see
Polarization reference point
on page 21 for an illustration).
Measurement
Range
50 mm (2”) 49.5 mm (1.94”) 121 mm (4.76") 19 degrees 10 m (32.8 ft)
threaded cover
enclosure/
electronics
184 mm
(7.24")
154 mm
(6.1")
167 mm
(6.6")
1/2" NPT cable entry
(or alternatively, M20 cable gland)
sensor
ref.
point
90 mm
(3.5")
146 mm
(5.74")
50 mm
(2.0")
threaded PVDF
antenna1)
121 mm (4.76")
process
connection
tag
49.5 mm (1.94")
antenna O.D.
2" thread

Page 14 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04
mmmmm
Specifications
Flanged Horn
Notes:
• Process temperature and pressure capabilities are dependent upon information on
the process connection tag. Reference drawing listed on the Tag is available on the
product page of our website at www.siemens.com/LR250, under Support /
Installation drawings. Additional information on process connections is available
on the Installation Drawings page under Process Connection Diagrams.
• Signal amplitude increases with horn diameter, so use the largest practical size.
• Optional extensions can be installed between the flange and the antenna.
enclosure/electronics
name-plate
flange
horn
sensor
reference
point
retaining collar
process
connection
tag
227 mm
(8.94")
horn
O.D.
135.3 mm
(5.32")
154 mm
(6.1")
50 mm
(2.0")
threaded cover
1/2" NPT cable entry
(or alternatively, M20 cable gland)
168.3 mm
(6.62")223.3mm
(8.79")
50 mm (2")
nom.
80 mm (3")
nom.
100 mm (3")
nom.
167 mm
(6.6")
90 mm
(3.5")
190 mm
(7.48")
optional
100 mm (4.0 ")
horn extension