Honeywell SmartLine SLG 700 User manual

Honeywell Process Solutions
SLG 700
SmartLine Level Transmitter
Guided Wave Radar
User’s Manual
34-SL-25-11
Revision 7.0
February 2017

Page ii SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
Copyrights, Notices and Trademarks
© Copyright 2017 by Honeywell International
Revision 7.0, February 2017
While the information in this document is presented in good faith and believed to be
accurate, Honeywell disclaims any implied warranties of merchantability and fitness for a
particular purpose and makes no express warranties except as may be stated in the written
agreement with and for its customers. In no event is Honeywell liable to anyone for any
indirect, special, or consequential damages. The information and specifications in this
document are subject to change without notice.
Honeywell, TDC3000, SFC, SmartLine, PlantScape, Experion PKS, and TotalPlant are
registered trademarks of Honeywell International Inc. Other brand or product names are
trademarks of their respective owners. While the information in this document is presented
in good faith and believed to be accurate, Honeywell disclaims any implied warranties of
merchantability and fitness for a particular purpose and makes no express warranties except
as may be stated in the written agreement with and for its customers. In no event is
Honeywell liable to anyone for any indirect, special, or consequential damages. The
information and specifications in this document are subject to change without notice.
Honeywell, TDC3000, SFC, SmartLine, PlantScape, Experion PKS, and TotalPlant are
registered trademarks of Honeywell International Inc. Other brand or product names are
trademarks of their respective owners.
Honeywell Process Solutions
1250 W Sam Houston Pkwy S
Houston, TX 77042

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page iii
About This Manual
This manual is a detailed how to reference for installing, wiring, configuring, starting up,
operating, maintaining, calibrating, and servicing Honeywell’s family of SLG 700 SmartLine
Guided Wave Radar Level Transmitters. Users who have a Honeywell SLG 700 SmartLine
Guided Wave Radar Level Transmitter configured for HARTprotocol are referred to the
SLG 700 Series HARTOption User’s Manual, Document #34-SL-25-06. Users who have a
Honeywell SLG 700 SmartLine Guided Wave Radar Level Transmitter configured for
Fieldbus operation are referred to the SLG 700 Series FoundationTM Fieldbus Option User’s
Manual, Document #34-SL-25-07.
The configuration of your Transmitter depends on the mode of operation and the options
selected for it with respect to operating controls, displays and mechanical installation. This
manual provides detailed procedures to assist first-time users, and it further includes
keystroke summaries, where appropriate, as quick reference or refreshers for experienced
personnel.
To digitally integrate a Transmitter with one of the following systems:
For the Experion PKS, you will need to supplement the information in this document
with the data and procedures in the Experion Knowledge Builder.
For Honeywell’s TotalPlant Solutions (TPS), you will need to supplement the
information in this document with the data in the PM/APM SmartLine Transmitter
Integration Manual, which is supplied with the TDC 3000 book set. (TPS is the evolution
of the TDC 3000).
Revision History
SLG 700 SmartLine Level Guided Wave Radar Transmitter User’s Manual,
Document #34-SL-25-11
Rev. 1.0 March 2015 First release
Rev. 2.0 April 2015 Updates to troubleshooting and Display menus
Rev. 3.0 June 2015 Security Considerations and Vulnerability added.
Rev. 4.0 June 2016 Updates for the R101 release. Including SLG726.
Rev. 5.0 July 2016 Display menus updated.
Rev. 6.0 December 2016 False Echo suppression, improved interface thickness
Rev. 7.0 February 2017 Troubleshooting section and Fieldbus updates

Page iv SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
References
The following list identifies publications that may contain information relevant to the information
in this document.
SLG 700 SmartLine Guided Wave Radar Level Transmitter Quick Start Guide,
Document #34-SL-25-04
SLG 700 SmartLine Guided Wave Radar Level Transmitter Safety Manual,
Document #34-SL-25-05
SLG 700 SmartLine Guided Wave Radar Level Transmitter HART Option Manual,
Document #34-SL-25-06
SLG 700 SmartLine Level Transmitter Guided Wave Radar FOUNDATION Fieldbus Option
Manual, Document #34- SL-25-07
SLG 700 SmartLine Level Transmitter Product Specification Document #34-SL-03-03
Patents
The Honeywell SLG 700 SmartLine Guided Wave Radar Level Transmitter family is covered by
U.S. Patents 6055633, 9329072, 9329073, 9476753 and 9329074 their foreign equivalents and
other patents pending.
Support and Contact Information
For Europe, Asia Pacific, North and South America contact details, refer to the back page of this
manual or the appropriate Honeywell Support web site:
Honeywell Corporate www.honeywell.com
Honeywell Process Solutions https://www.honeywellprocess.com/*
Honeywell SmartLine Level https://www.honeywellprocess.com/smartline-level-transmitter.aspx
Telephone and Email Contacts
Area
Organization
Phone Number
United States and
Canada
Honeywell Inc.
1-800-343-0228 Customer Service
1-800-423-9883 Global Technical Support
Global Email
Support
Honeywell Process
Solutions
[e-mail]

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page v
Symbols Descriptions and Definitions
The following symbols may appear in this document.
Symbol
Definition
ATTENTION: Identifies information that requires special consideration.
TIP: Identifies advice or hints for the user, often in terms of performing a
task.
CAUTION
Indicates a situation which, if not avoided, may result in equipment or
work (data) on the system being damaged or lost, or may result in the
inability to properly operate the process.
CAUTION: Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also be used to
alert against unsafe practices.
CAUTION symbol on the equipment refers the user to the product manual
for additional information. The symbol appears next to required
information in the manual.
WARNING: Indicates a potentially hazardous situation, which, if not
avoided, could result in serious injury or death.
WARNING symbol on the equipment refers the user to the product
manual for additional information. The symbol appears next to required
information in the manual.
WARNING, Risk of electrical shock: Potential shock hazard where
HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or 60
VDC may be accessible.
ESD HAZARD: Danger of an electro-static discharge to which equipment
may be sensitive. Observe precautions for handling electrostatic sensitive
devices.
Protective Earth (PE) terminal: Provided for connection of the protective
earth (green or green/yellow) supply system conductor.
Functional earth terminal: Used for non-safety purposes such as noise
immunity improvement. Note: This connection shall be bonded to
Protective Earth at the source of supply in accordance with national local
electrical code requirements.
Earth Ground: Functional earth connection. Note: This connection shall
be bonded to Protective Earth at the source of supply in accordance with
national and local electrical code requirements.
Chassis Ground: Identifies a connection to the chassis or frame of the
equipment shall be bonded to Protective Earth at the source of supply in
accordance with national and local electrical code requirements.

Page vi SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
Symbol
Definition
The Factory Mutual®Approval mark means the equipment has been
rigorously tested and certified to be reliable.
The Canadian Standards mark means the equipment has been tested
and meets applicable standards for safety and/or performance.
The Ex mark means the equipment complies with the requirements of the
European standards that are harmonized with the 2014/68/EU Directive
(ATEX Directive, named after the French "ATmosphere EXplosible").

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page vii
Contents
1Introduction..........................................................................................................1
1.1 Overview.................................................................................................................................1
1.2 Transmitter Models.................................................................................................................1
1.3 Transmitter Components........................................................................................................1
1.3.1 Overview of components....................................................................................................1
1.3.2 Electronics Housing............................................................................................................2
1.3.3 Sensor Housing ..................................................................................................................3
1.3.4 Process Connector .............................................................................................................3
1.3.5 Probe ..................................................................................................................................4
1.4 Communicating with the Transmitter......................................................................................6
1.4.1 4-20 mA HART..................................................................................................................6
1.4.2 FOUNDATIONTM Fieldbus (FF)..........................................................................................9
1.4.3 DTM-based tools and Experion..........................................................................................9
1.5 SLG 700 Transmitter nameplate ..........................................................................................11
1.6 Transmitter Model Number Description................................................................................13
1.7 Safety Certification Information ............................................................................................13
1.7.1 Safety Integrity Level (SIL) ...............................................................................................13
1.8 Security Considerations........................................................................................................14
2Radar Level Measurement.................................................................................15
2.1 Overview...............................................................................................................................15
2.2 Theory of Operation..............................................................................................................15
2.2.1 Interface and Flooded Measurements..............................................................................17
2.3 Signal processing configuration............................................................................................18
2.3.1 Amplitude Tracking...........................................................................................................19
2.3.2 Full-tank Detection............................................................................................................19
2.4 Signal Interferences and background echoes......................................................................20
2.4.1 Field and Obstacle background........................................................................................20
2.4.2 Static and Dynamic backgrounds.....................................................................................20
2.4.3 Accuracy and measurement range specifications............................................................21
2.5 Process Applications ............................................................................................................25
2.5.1 Turbulence........................................................................................................................25
2.5.2 Foam.................................................................................................................................25
2.5.3 Emulsions .........................................................................................................................25
2.6 Container Considerations.....................................................................................................26
2.6.1 Shapes..............................................................................................................................26
2.6.2 Materials (plastic vs. metal)..............................................................................................26
2.7 Blocking distance high and blocking distance low guidance................................................27
2.7.1 Blocking distance high (BDH) guidance ...........................................................................27
2.7.2 Blocking distance low (BDL) guidance .............................................................................27

Page viii SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
3Transmitter Installation.......................................................................................28
3.1 Preparation............................................................................................................................28
3.1.1 Installation sequence ........................................................................................................28
3.1.2 Tools..................................................................................................................................29
3.2 Mechanical Installation..........................................................................................................30
3.2.1 Check for correct probe dimensions and strength............................................................30
3.2.2 Accuracy and measuring range specifications..................................................................30
3.2.3 Trim the probe length........................................................................................................37
3.2.4 Attach/assemble the probe ...............................................................................................38
3.2.5 Centering Disks and configured probe length...................................................................48
3.2.6 Mounting the transmitter ...................................................................................................52
3.2.7 Suitable mounting position................................................................................................58
3.2.8 Optimum Operating Temperature.....................................................................................59
3.2.9 Temperature requirements................................................................................................60
3.2.10 Mounting on a non-metallic container...........................................................................68
3.2.11 Rotate transmitter housing............................................................................................71
3.2.12 Secure the probe...........................................................................................................71
3.2.13 Install conduit entry plugs and adapters .......................................................................74
3.2.14 Flange pressure ratings ................................................................................................75
3.2.15 Material Exposed to Tank Atmosphere.........................................................................75
3.3 Electrical Installation .............................................................................................................76
3.3.1 Wiring a transmitter...........................................................................................................76
3.3.2 HART / 4-20mA Voltage Operating Ranges .....................................................................76
3.3.3 Terminal Connections .......................................................................................................78
3.3.4 FOUNDATION Fieldbus....................................................................................................80
3.3.5 Wiring Procedure...............................................................................................................80
3.3.6 Lightning Protection ..........................................................................................................82
3.3.7 Supply Voltage Limiting Requirements.............................................................................82
3.3.8 Process Sealing ................................................................................................................82
3.3.9 Explosion-Proof Conduit Seal...........................................................................................82
4Operating the Transmitter ..................................................................................83
4.1 User interface options ...........................................................................................................83
4.1.1 Transmitter advanced displays with buttons.....................................................................83
4.1.2 DTM and DD –HART and FF...........................................................................................83
4.2 Three-Button Operation ........................................................................................................84
4.2.1 Menu Navigation ...............................................................................................................85
4.2.2 Data Entry .........................................................................................................................85
4.2.3 Editing a Numeric Value....................................................................................................86
4.2.4 Selecting a new setting from a list of choices ...................................................................86
4.3 The Advanced Display Menu................................................................................................87
4.3.1 Correlation Model Recalculation .......................................................................................88
4.4 Monitoring the Advanced Display........................................................................................104
4.4.1 Advanced Displays..........................................................................................................104
4.4.2 Button operation during monitoring.................................................................................106
4.5 Changing the Default Failsafe Direction and Write Protect Jumpers (Including Simulation
mode) 107
4.5.1 Procedure to Establish Failsafe Operation .....................................................................107

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page ix
5Maintenance .................................................................................................... 111
5.1 Overview.............................................................................................................................111
5.2 Preventive Maintenance Practices and Schedules ............................................................111
5.3 Procedures .........................................................................................................................114
5.3.1 Output Check Procedures ..............................................................................................114
5.3.2 Constant Current Source Mode Procedure....................................................................115
5.3.3 Replacing the Terminal Block.........................................................................................116
5.3.4 Replacing the Display Assembly ....................................................................................116
5.3.5 Replacing the Communication Module...........................................................................116
5.3.6 How to replace the Sensor Housing...............................................................................117
5.3.7 Replacing GWR Sensor Electronics...............................................................................119
5.3.8 Hazardous Locations......................................................................................................125
5.4 Replacing the Wire Probe...................................................................................................126
5.4.1 Overview.........................................................................................................................126
5.4.2 Scope of this Kit Instruction............................................................................................126
5.4.3 Applicability.....................................................................................................................126
5.4.4 Part Replacement Probes (reference)............................................................................126
5.4.5 Required Publications.....................................................................................................126
5.4.6 Tools required.................................................................................................................126
5.4.7 Procedures .....................................................................................................................127
6Troubleshooting............................................................................................... 132
6.1 Error Messages ..................................................................................................................132
6.1.1 Diagnostics .....................................................................................................................132
6.2 Diagnosing SLG720 Coaxial Probe misassembly..............................................................135
7Parts List.......................................................................................................... 141
7.1 Overview.............................................................................................................................141
8Glossary........................................................................................................... 142
9Appendix Certifications .................................................................................... 146
9.1 Safety Instrumented Systems (SIS) Installations ...............................................................146
9.2 European Directive Information (EU)..................................................................................146
9.3 Hazardous Locations Certifications....................................................................................147
9.4 Marking ATEX Directive .....................................................................................................153
9.5 Conditions of Use for Ex Equipment, “Hazardous Location Equipment” or "Schedule of
Limitations"......................................................................................................................................154
9.6 Control Drawing..................................................................................................................156
9.7 China RoHS........................................................................................................................159
10 Security............................................................................................................ 160
10.1 How to report a security vulnerability..................................................................................160

Page x SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
List of Figures
Figure 2-1: Components of the Level transmitter.................................................................................. 2
Figure 2-2: Example of HART connection RL...................................................................................... 7
Figure 2-3: Example of FF connection.................................................................................................. 9
Figure 2-4: Example of a FF network.................................................................................................. 11
Figure 2-5: Transmitter nameplate example........................................................................................ 12
Figure 2-6: Standard SLG 700 Model Number ................................................................................... 13
Figure 2-7: Safety certification example.............................................................................................. 13
Figure 2-1: GWR measurement........................................................................................................... 16
Figure 2-2: Sample Echo Curve........................................................................................................... 17
Figure 2-3: Interface measurement...................................................................................................... 18
Figure 2-4 Radar Impulse Reflection model........................................................................................ 19
Figure 2-5: Upper transition zone length and minimum blocking distance high (BDH) and minimum
blocking distance low (BDL) for coax probes in water....................................................................... 21
Figure 2-6: Upper transition zone length and minimum blocking distance high (BDH) and minimum
blocking distance low (BDL) for coax probes in oil............................................................................ 22
Figure 2-7: Transition zone lengths and minimum blocking distance high (BDH) for single lead
probes in water..................................................................................................................................... 23
Figure 2-8: Transition zone lengths and minimum blocking distance high (BDH) for single lead (i.e.
rod and rope) probes in oil................................................................................................................... 23
Figure 2-9: Top vertical and angled mounting..................................................................................... 26
Figure 3-1: SLG720 probe dimensions, mm [in]................................................................................. 33
Figure 3-2: SLG726 Threaded process connection probe dimensions; mm [in] ................................. 33
Figure 3-3: SLG726 Flanged process connection probe dimensions; mm [in].................................... 34
Figure 3-4: Example bending torque values........................................................................................ 37
Figure 3-5: Rod probe assembly.......................................................................................................... 38
Figure 3-6: SLG726 flanged process connection, probe nut installation position, mm [in]................ 39
Figure 3-7: Wire probe assembly......................................................................................................... 40
Figure 3-8: SLG720 Coaxial probe assembly (single outer tube depicted)......................................... 43
Figure 3-9: SLG726 Coaxial probe assembly...................................................................................... 47
Figure 3-10: Recommended location of holes for rod probes.............................................................. 49
Figure 3-11: Centering disks for wire and rod probes ......................................................................... 50
Figure 3-12: Probe length definition for rod probes using a centering disk ........................................ 51
Figure 3-13: Flanged SLG720 Transmitter, mm [in]........................................................................... 52
Figure 3-14: Threaded (NPT ¾", 1", 1½", 2") SLG720 Transmitter, mm [in].................................... 53
Figure 3-15: Threaded (BSP/G ¾”, 1”, 1½”) SLG720 Transmitter, mm [in]...................................... 54
Figure 3-16: Flanged SLG726 transmitter, mm [in]............................................................................ 55

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page xi
Figure 3-17: Threaded (NPT 1½", 2”) SLG726 transmitter, mm [in]..................................................56
Figure 3-18: Threaded (BSP/G 1½") SLG726 transmitter, mm [in]....................................................57
Figure 3-19: Mounting position............................................................................................................58
Figure 3-20: SLG720 temperature limits .............................................................................................60
Figure 3-21: SLG726 temperature limits .............................................................................................61
Figure 3-22: SLG726 Maximum pressure based on maximum operating temperature .......................61
Figure 3-23: Flanged tank connection..................................................................................................63
Figure 3-24: Flange mounting..............................................................................................................64
Figure 3-25: Oversized nozzle configuration.......................................................................................65
Figure 3-26: Threaded tank connection................................................................................................66
Figure 3-27: Tank roof mounting using threaded connection..............................................................66
Figure 3-28: Bypass installation...........................................................................................................67
Figure 3-29: Mounting on a non-metallic vessel..................................................................................68
Figure 3-30: Mounting in concrete silos ..............................................................................................69
Figure 3-31: Remote mount..................................................................................................................70
Figure 3-32: Rotate transmitter housing...............................................................................................71
Figure 3-33: Anchoring wire probes ....................................................................................................72
Figure 3-34: Wire probe slack..............................................................................................................72
Figure 3-35: Anchoring coaxial probes................................................................................................73
Figure 3-36: Transmitter operating ranges...........................................................................................76
Figure 3-37: HART 3-Screw Terminal Board and Grounding Screw..................................................78
Figure 4-1: Three-Button Option..........................................................................................................84
Figure 4-2: Advanced Display Formats with the Process Variable....................................................104
Figure 4-3: Locating the Failsafe and Write Protect Jumpers............................................................109
Figure 5-1: Current Loop Test Connections.......................................................................................115
Figure 5-2: Electronic Housing Components.....................................................................................116
Figure 5-3: Sensor Housing................................................................................................................117
Figure 5-4: Part Number and Date Code (D/C) label on bottom of Terminal PCBA assembly ........119
Figure 5-5: Location of sensor housing and attachment set screws ...................................................120
Figure 5-6: Communications Housing Assembly ..............................................................................121
Figure 5-7: Rook Assembly................................................................................................................122
Figure 5-8: - Sensor ribbon cable......................................................................................................123
Figure 5-9: Location of RF-connector at bottom of sensor housing ..................................................124

Page xii SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
List of Tables
Table 1-1: Features and Options............................................................................................................ 1
Table 1-2: Available SmartLine GWR display characteristics.............................................................. 3
Table 1-3: Probe Selection..................................................................................................................... 4
Table 3-1: Installation sequence .......................................................................................................... 28
Table 3-2: Mechanical installation sequence....................................................................................... 30
Table 3-3: Sensor Details –All Models............................................................................................... 31
Table 3-4: Minimum blocking distances and transition zones for the various probe types................. 31
Table 3-5: Maximum measurement range for each probe type versus dielectric constant.................. 31
Table 3-6: Tensile load limits for flexible probe ................................................................................. 35
Table 3-7: Rigid (i.e. rod and coaxial) probe mounting angle limits................................................... 35
Table 3-8: Rod probe bending torque limits (all lengths).................................................................... 35
Table 3-9: Coaxial probe bending load limits (all lengths).................................................................. 35
Table 3-10: Recommended probe diameter and material of construction........................................... 47
Table 3-11: Centering disk determination from pipe size and schedule.............................................. 50
Table 3-12: Centering disk dimensions ............................................................................................... 50
Table 3-13: Probe length for different probe types.............................................................................. 51
Table 3-14: Minimum recommended distance to container wall and obstacles (mm) ........................ 58
Table 3-15: SLG726 Maximum pressure based on maximum operating temperature in tabular form 62
Table 3-16: SLG720: Recommended nozzle dimensions.................................................................... 64
Table 3-17: SLG720 bypass and stillwell recommended diameters.................................................... 67
Table 3-18: SLG726 bypass and stillwell recommended diameters.................................................... 68
Table 3-19: Conduit entry plug installation......................................................................................... 74
Table 3-20: Conduit adapter installation.............................................................................................. 74
Table 4-1: Three-Button Option Functions.......................................................................................... 85
Table 4-2: Three-Button Data Entry.................................................................................................... 86
Table 4-3: Advanced Display Main Menu Structure........................................................................... 87
Table 4-4: Correlation Model Recalculation ....................................................................................... 88
Table 4-5: Display Config sub-menu................................................................................................... 89
Table 4-6: Basic Configuration sub-menu........................................................................................... 91
Table 4-7: Advanced Config sub-menu............................................................................................... 95
Table 4-8: Monitor sub-menu.............................................................................................................. 99
Table 4-9: Advanced Displays with PV Format Display Indications................................................ 105
Table 4-10: HART Failsafe and Write Protect Jumpers.................................................................... 110
Table 4-11: FOUNDATION Fieldbus Simulation and Write Protect Jumpers................................. 110
Table 5-2: Probe length calculated from spare probe model number................................................ 129
Table 6-1: SLG 700 Standard Diagnostics Messages........................................................................ 133
Table 7-1: Parts.................................................................................................................................. 141

Revision 7.0 SLG 700 SmartLine Guided Wave Radar User’s Manual 1
1 Introduction
1.1 Overview
The SLG 700 Guided Wave Radar SmartLine transmitter is an electronic instrument
designed to measure levels of liquid and solid materials. Guided Wave Radar (GWR)
transmitters use time domain reflectometry with radar pulses guided by a metal probe and
reflected off a product surface to determine levels in tanks. In comparison to other level
measurement technologies, GWR provides a highly-accurate, cost-effective, reliable
measurement over a wide range of process conditions.
1.2 Transmitter Models
The SmartLine Guided Wave Radar (GWR) transmitter is available as a family of
SLG72X models for liquid applications. The pressure and temperature application ranges
for each model are summarized in Table 2-1.
Table 2-1: Features and Options
Range
Model
Standard Temperature Liquid Level Measurement
(-40 to 200°C/-1 to 40 bar)
SLG720
High Temperature / High Pressure Liquid Level Measurement
(-60 to 450°C /-1 to 400 bar)
SLG726
Each model is available with a range of probes, wetted materials, and accessories to suit
most applications.
1.3 Transmitter Components
1.3.1 Overview of components
As shown in
Figure 2-1 the transmitter consists of:
Electronics housing containing
oDisplay module (optional)
oButtons module (optional)
oCommunications module
oElectrical terminal block assembly
Sensor housing
Process connector
Probe, also known as a waveguide

Page 2 SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
These components are described below.
Additional mounting and optional accessories are available, such as centering discs for the
probe. For list of all options and accessories please refer to the purchasing specifications,
which is available, here: https://www.honeywellprocess.com/en-
US/explore/products/instrumentation/process-level-sensors/Pages/smartline-level-
transmitter.aspx.
Figure 2-1: Components of the Level transmitter
1.3.2 Electronics Housing
The Electronics Housing contains these components. All components are replaceable in
the field.
Terminal Assembly: Provides connection points for the measurement signal and
power. Different terminal modules are required for HARTand FOUNDATIONTM
Fieldbus versions of the transmitters. The terminal is polarity insensitive. Lightning
protection is optional.
Communications module: The platform provides separate electronics modules for
HARTand FOUNDATIONTM Fieldbus versions of the transmitters. The
communication board for a certain communication protocol always requires terminal
assembly for the same type of communication. Descriptions of the communications
protocols are in the Glossary.
Optional Display: Table 2-2 lists features of the available display module.

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page 3
Optional Buttons: Refer to Figure 4-1: Three-Button Option for more information.
Table 2-2: Available SmartLine GWR display characteristics
Advanced
Display
360° rotation in 90° increments
Three configurable screen formats with configurable rotation timing
oLarge process variable (PV)
oPV with bar graph
oPV with trend (1-999hrs, configurable)
Echo stem plot for checking measurement accuracy
Eight Screens with 3-30 sec. rotation timing and the use of 3-buttons for
configuration.
Standard and custom engineering units
Diagnostic alerts and diagnostic messaging
Multiple language support options:
oOption 1: EN, FR, GE, SP, RU, TU, IT
oOption 2: EN, CH, JP (Kanji)
Supports 3-button configuration and calibration
Supports transmitter messaging and maintenance mode indications
To make changes to the transmitter setup or configuration without the use of an external
device such as a handheld or PC, an optional 3-Button Assembly is available. Use the
buttons and menus to:
•Configure transmitter
•Configure and navigate displays
1.3.3 Sensor Housing
The sensor housing contains the pulse generation and analysis hardware.
These electronics are potted to provide flame path resistance.
The sensor housing is available as a replaceable part.
1.3.4 Process Connector
The process connector has the following functions.
•Separates the process environment from the external environment.
•Provides a threaded insert to the tank which removes the need for brackets to
mount the transmitter. Various mounting types are available, including popular
threads and flanges.
•Provides electrical feed-through to the probe.
Each of the SLG720 and SLG726 models have different process connector designs.
Note:
Each process connector design accepts a sub-set of the full range of probe types.

Page 4 SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
1.3.5 Probe
The purpose of a Guided Wave Radar probe is to guide radar pulses produced by the radar
transmitter towards the material being measured. It also guides the reflected pulse back to the
transmitter for processing into a level measurement. The probe can be made of a single
conductor such as for single wire or rod probes, or two conductors for coaxial probes. For rigid
probes (rod and coaxial), multiple segments, each up to 2m long, can be connected together.
The probe is also known in the industry as “waveguide”.
A single wire probe is the most common design; other designs are provided based on
application needs. For the purposes of this document the term “Wire” is being used, however
the term “Wire” and “Rope” are interchangeable.
Table 2-3 summarizes advantages and disadvantages of different probe constructions.
Installation details of each probe are described in Chapter 3.
Table 2-3: Probe Selection
Legend
Yes
No
Contact the TAC team
Single wire
(Wire)
Single rod
Coaxial
Level
Interface
(liquid/liquid)
Bubbling/boiling
surfaces
Low-dielectric
constant liquids 1
2
Foam (liquid surface
measurement)

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page 5
Foam (top of foam
measurement)
Foam (top of foam
and liquid surface
measurement)
Coating/tacky liquids
Crystallizing liquids
Viscous liquids
Probe is close to
tank wall/disturbing
objects (<12″/30cm)
Probe could contact
tank wall, nozzle or
disturbing objects
Turbulent Surface
Turbulent fluid
causing mechanical
stress on probe
Tall, narrow nozzles1
Liquid or vapor
spray could contact
probe above surface
Disturbing
electromagnetic
interference in tank
Ability to clean
probe
1See the SLG 700 SmartLine Guided-Wave Radar Level Specification, Document
#34-SL-03-03.

Page 6 SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
1.4 Communicating with the Transmitter
It is possible to remotely monitor and configure a transmitter using either the HARTor
FOUNDATIONTM Fieldbus (FF) protocols. Alternatively, with the HARToption, the
transmitter can be monitored using the analog current, and with both interfaces, can be
configured using the three-button interface and display.
Note:
The protocols are not interchangeable. Each protocol uses
significantly different terminal and communication boards that are
installed before shipping.
1.4.1 4-20 mA HART
The output of a transmitter configured for the HART protocol includes two primary modes:
•Point-to-Point Mode: one transmitter is connected via a two-conductor, 4-20mA current
loop to one receiver.
•Multi-Drop Mode: several transmitters are connected through a two-conductor network to a
multiplexed receiver device.
The major difference between the two modes is that in Point-to-Point mode, the average
value of the loop current represents the current value of an analog signal representing the
process inside the tank. In multi-drop mode, the average value of the loop current is fixed,
usually at 4mA. Therefore, in Point-to-Point mode, an external control system can read the
Primary Variable (PV) through an analog input without HART messaging, whereas in multi-
drop mode, the PV can only be read as a digital value using HART messaging.
Note:
In the HART system, the abbreviation PV is used to denote the
Primary Variable which may be only one of a number of process or
device variables that may be available.
SLG 700 supports HART version 7 and its associated backward compatibility. The analog
signal is modulated by Frequency Shift Keying (FSK), using frequencies and current
amplitude that do not affect analog sensing at the receiver. The accuracy of the analog level
must be precisely controlled for accurate sensing. HART communication will not bump
process variables. In multi-drop mode, theoretically up to 16 devices in HART 5 (addresses
0-15) or up to 64 devices in HART6/7 (addresses 0-63) can exist on the two-conductor
network. Practically, the number of devices in a multi-drop installation is limited due to
design constraints. When installing into a multi-drop network, consider that the SLG700
requires a minimum startup current of 17mA and a minimum terminal voltage of 11V during
startup. After this initial startup period (approximately 0.5 seconds), the loop current will be
fixed at 4mA, and the minimum terminal voltage is 14V. The power source, wiring, intrinsic
safety barriers, and other devices in the network must also be considered.
Note:
The SLG700 requires a minimum startup current of 17mA, even
when configured in multi-drop mode. The minimum terminal voltage
is 11V during startup. After startup, the loop current will be fixed at

Revision 7 SLG 700 SmartLine Level Transmitter User’s Manual Page 7
4mA, and the minimum terminal voltage should be 14V.
Figure 2-2 is an example of a HART connection to the transmitter. The communication
resistor RL may be inserted anywhere in the 4-20 mA loop but it is recommended to be
installed close to the positive supply. Refer to section 3.3.2 for acceptable power supply and
RL ranges
The MC Toolkit is a dedicated Honeywell communication tool that uses Device Description
(DD) files to communicate with multiple transmitter models. Also other equivalent tools or a
HART-to-USB converter may be used. Device Description files are available from:
HONEYWELL: Go to:
https://www.honeywellprocess.com/en-US/explore/products/instrumentation/process-level-
sensors/Pages/smartline-level-transmitter.aspx
Select the “Software” tab.
Scroll/search for file name:
“HART Device Description (DD) files for Honeywell HART Devices”
This .zip file contains the latest version of the DD files for all of Honeywell’s HART field
devices.
Unzip the file to locate the DD files applicable to the SLG 700 series.
HART®FOUNDATION: http://en.hartcomm.org
Note:
Device Descriptions (DD) are HART data files which are
gathered from field device manufacturers which describes the
features and functions of a device.
HART provides a detailed definition here:
http://en.hartcomm.org/hcp/tech/faq/faq.html
Figure 2-2: Example of HART connection RL

Page 8 SLG 700 SmartLine Level Transmitter User’s Manual Revision 7
Refer to section 3.3.2 for RL information