Honeywell SmartLine ST700 User manual

Honeywell Process Solutions
SmartLine Pressure Transmitters
ST 700 User’s Manual
34-ST-25-44
Revision 13
September 2022

Page ii ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
Copyrights, Notices and Trademarks
© Copyright 2022 by Honeywell, Inc.
Revision 13, September 2022
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, TDC 3000, 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 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page iii
About This Manual
This manual is a detailed how to reference for installing, piping, wiring, configuring, starting up,
operating, maintaining, calibrating, and servicing Honeywell’s family of ST 700 SmartLine
pressure transmitters,Standard and basic models. Users who have a Honeywell ST 700 SmartLine
pressure transmitter configured for HART protocol or Honeywell’s Digitally Enhanced (DE) are
referred to the ST 700 Series HART/DE Option User’s Manual, Document # 34-ST-25-47.
Users who have a Honeywell ST 700 SmartLine pressure transmitter configured for Fieldbus
operation are referred to the ST 700 Series Fieldbus Option User’s Manual, Document # 34-ST-
25-48.
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).
Release Information
•ST 700 SmartLine Pressure Transmitter User Manual, Document # 34-ST-25-44,
Revision 1, February, 2013.
•Revision 2, May, 2013 –Updates to Parts list, Explosionproof Seal class, Fail Safe and
Comms Module procedures.
•Revision 3, July 2013 –Control Drawing updated to Rev.D.
•Revision 4, December 2013 –STG73P flush Mount.
•Revision 5, December 2014 –MID and MARINE Approvals added.
•Revision 6, March 2016 –Standard display added.
•Revision 7, May 2016 –Approval updates and EU cert.
•Revision 8, December 2016 –Basic models added.
•Revision 9, September 2017 –Display enhancements to the simple display, Parts list
updates.
•Revsiosn 10, November 2018 - EU DECLARATION OF CONFORMITY and Approvals
and Control Drawing updated and updated voltage chart.
•Revision 11, June 2020 –Std display updates - Russian language, Eng and PV units.
•Revision 12, March 2022 –Updates on parts list.

Page iv ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
•Revision 13, September 2022 –Updates to standard display menus and punctuation.
References
The following list identifies publications that may contain information relevant to the information in
this document.
•SmartLine Pressure Transmitter ST 800/ST700 Standard Quick Start Guide, # 34-ST-25-36.
•ST 800 & ST 700 Pressure Transmitter with HART Safety Manual, # 34-ST-25-37.
•ST 700 SmartLine Pressure Transmitter HART/DE Option User’s Manual, # 34-ST-25-47.
•ST 700 FF Transmitter with FOUNDATION Fieldbus Option Installation & Device Reference
Guide, # 34-ST-25-48.
•MC Tookit User Manual, for 400 or later, # 34-ST-25-20.
•PM/APM Smartline Transmitter Integration Manual, # PM 12-410.
•ST 800 & ST 700 Series Pressure, Analog, HART and DE Communications form, Honeywell
drawing 50049892.
•Smart Field Communicator Model STS 103 Operating Guide, # 34-ST-11-14.
Patent Notice
The Honeywell ST 700 SmartLine pressure transmitter family is covered by one or more of the
following U. S. Patents: 5,485,753; 5,811,690; 6,041,659; 6,055,633; 7,786,878; 8,073,098; 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 Solution Support web site:
Honeywell Corporate https://process.honeywell.com
Honeywell Process Solutions https://process.honeywell.com/remote-meter-assemblies
Training Classes https://process.honeywell.com/us/en/services/training
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 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page v
Symbol Descriptions and Definitions
The symbols identified and defined in the following table 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.
continued

Page vi ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
Symbol
Description
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 harmonised with the 94/9/EC Directive
(ATEX Directive, named after the French "ATmosphere EXplosible").

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page vii
Contents
Copyrights, Notices and Trademarks.......................................................................................................ii
1. ST 700 Transmitter Series................................................................................................................1
1.1 Overview..................................................................................................................................1
2. Introduction to the ST 700 Standard Transmitter.............................................................................3
2.1 Features and Options................................................................................................................3
2.1.1 Physical Characteristics....................................................................................................4
2.1.2 Functional Characteristics ................................................................................................5
2.2 ST 700 Standard Transmitter Nameplate .................................................................................5
2.3 Safety Certification Information...............................................................................................6
2.4 Transmitter Adjustments..........................................................................................................6
2.5 Display Options –Standard Display .........................................................................................6
2.6 Optional Integrated Two-Button Assembly (Standard Display)..............................................7
3. Application Design for the ST 700 Standard Transmitter...............................................................8
3.1 Overview..................................................................................................................................8
3.2 Accuracy...................................................................................................................................8
3.2.1 Diagnostic Messages........................................................................................................9
3.3 Safety......................................................................................................................................10
3.3.1 Safety Integrity Level (SIL) ...........................................................................................11
4. Installation and Startupfor the ST 700 Standard Transmitter.........................................................12
4.1 Installation Site Evaluation.....................................................................................................12
4.2 Honeywell MC Toolkit...........................................................................................................12
4.3 Display Installation Precautions.............................................................................................12
4.4 Mounting ST 700 Standard Transmitters ...............................................................................13
4.4.1 Summary.........................................................................................................................14
4.4.2 Flush mounting - ST 700 Standard Transmitter.............................................................15
4.4.3 Mounting Dimensions....................................................................................................16
4.4.4 Bracket Mounting Procedure..........................................................................................17
4.4.5 Mounting Transmitters with Small Absolute or Differential Pressure Spans ................19
4.4.6 Flange Mounting ............................................................................................................20
4.4.7 Remote Diaphragm Seal Mounting Information............................................................21
4.5 Piping the ST 700 Standard Transmitter ................................................................................22
4.5.1 Piping Arrangements......................................................................................................23
4.5.2 Transmitter Location......................................................................................................24
4.5.3 General Piping Guidelines..............................................................................................25
4.5.4 Procedure to Install Flange Adapters..............................................................................26
4.6 Wiring the ST 700 Standard Transmitter ...............................................................................26
4.6.1 Overview ........................................................................................................................27
4.6.2 Digital System Integration Information..........................................................................30
4.6.3 Wiring Variations...........................................................................................................31
4.6.4 Wiring Procedure............................................................................................................32
4.6.5 Lightning Protection.......................................................................................................33
4.6.6 Supply Voltage Limiting Requirements.........................................................................34
4.6.7 Process Sealing...............................................................................................................35
4.6.8 Explosion-Proof Conduit Seal........................................................................................36
4.7 Startup –ST 700 Standard Transmitter..................................................................................37
4.7.1 Overview ........................................................................................................................38
4.7.2 Startup Tasks..................................................................................................................39
4.7.3 Output Check Procedures...............................................................................................40
4.7.4 Constant Current Source Mode Procedure.....................................................................41

Page viii ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
5. Operation_ST 700 Standard Transmitter....................................................................................... 42
5.1 Overview................................................................................................................................ 42
5.2 Three-Button Operation......................................................................................................... 42
5.2.1 The Basic Display Menu................................................................................................ 44
5.2.2 Data Entry...................................................................................................................... 48
5.2.3 Editing a Numeric value................................................................................................. 49
5.2.4 Selecting a new setting from a list of choices................................................................ 50
5.3 Two-Button Operation........................................................................................................... 51
5.3.1 The Standard Display Menu........................................................................................... 52
5.3.2 Standard Display Abbreviations: ................................................................................... 71
5.3.3 Data Entry...................................................................................................................... 72
5.3.4 Editing a Numeric value................................................................................................. 73
5.3.5 Selecting a new setting from a list of choices................................................................ 74
5.4 Basic and Standard Display Operations................................................................................. 75
5.4.1 Editing a Numeric value................................................................................................. 76
5.4.2 Selecting a new setting from a list of choices................................................................ 77
5.5 Three Button Operation with no Display Installed ................................................................ 78
5.5.1 Zero Adjustment ............................................................................................................ 79
5.5.2 Span Adjustment............................................................................................................ 80
5.6 Changing the Default Failsafe Direction................................................................................ 81
5.6.1 DE and Analog Differences........................................................................................... 82
5.6.2 Procedure to Establish Failsafe Operation..................................................................... 83
5.7 Monitoring the Basic and Standard Displays for the ST 700 Standard Transmitter............. 86
5.7.1 Basic Display_ST 700 Standard Transmitter -............................................................... 87
5.7.2 Standard Display_ST 700 Standard Transmitter - ......................................................... 88
6. Maintenance_ST 700 Standard Transmitter................................................................................... 90
6.1 Overview................................................................................................................................ 90
6.2 Preventive Maintenance Practices and Schedules.................................................................. 90
6.3 Inspecting and Cleaning Barrier Diaphragms........................................................................ 90
6.4 Replacing the Communication Module ................................................................................. 93
6.5 Replacing the Meter Body ..................................................................................................... 95
7. Calibration for the ST 700 Standard Transmitter........................................................................... 99
7.1 Recommendations for Transmitter Calibration...................................................................... 99
7.2 Calibration Procedures........................................................................................................... 99
8. Troubleshooting on the ST 700 Standard Transmitter................................................................. 100
8.1 Overview.............................................................................................................................. 100
8.2 Critical Diagnostics Screens ................................................................................................ 100
8.2.1 Fault Conditions and Recommended Corrective Actions –Basic Display.................. 101
8.2.2 Fault Conditions and Recommended Corrective Actions –Standard Display............ 102
9. Parts List_ST 700 Standard Transmitter...................................................................................... 103
9.1 Overview.............................................................................................................................. 103
10. Introduction_ST 700 Basic Transmitter................................................................................... 119
10.1 Overview.............................................................................................................................. 119
10.2 Features and Options............................................................................................................ 119
10.2.1 Physical Characteristics ............................................................................................... 120
10.2.2 Functional Characteristics............................................................................................ 121
10.3 ST 700 Transmitter Nameplate............................................................................................ 121
10.4 Safety Certification Information.......................................................................................... 122
10.5 Transmitter Adjustments...................................................................................................... 122
10.6 Display Options –Standard Display..................................................................................... 122
10.7 Optional Integrated two-Button Assembly (Standard Display)........................................... 123

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page ix
11. Application Design_ST 700 Basic Transmitter........................................................................124
11.1 Overview..............................................................................................................................124
11.2 Accuracy...............................................................................................................................124
11.2.1 Diagnostic Messages....................................................................................................125
11.3 Safety....................................................................................................................................125
11.3.1 Safety Integrity Level (SIL) .........................................................................................126
12. Installation and Startup_ST 700 Basic Transmitter..................................................................127
12.1 Installation Site Evaluation...................................................................................................127
12.2 Honeywell MC Toolkit.........................................................................................................127
12.3 Display Installation Precautions...........................................................................................127
12.4 Mounting_ST 700 Basic Transmitter...................................................................................128
12.4.1 Summary.......................................................................................................................129
12.5 Flush mounting_ST 700 Basic Transmitter..........................................................................130
12.5.1 Mounting Dimensions, ST 700 Basic Transmitter.......................................................131
12.5.2 Bracket Mounting Procedure for ST 700 Basic Transmitter,.......................................132
12.5.3 Mounting Transmitters with Small Absolute or Differential Pressure Spans ..............134
12.5.4 Flange Mounting_ST 700 Basic Transmitter ...............................................................135
12.5.5 Remote Diaphragm Seal Mounting Information_ST 700 Basic Transmitter,..............136
12.6 Piping the ST 700 Basic Transmitter....................................................................................137
12.6.1 Piping Arrangements....................................................................................................138
12.6.2 Suggestions for Transmitter Location ..........................................................................139
12.6.3 General Piping Guidelines............................................................................................140
12.6.4 Procedure to Install Flange Adapters............................................................................141
12.7 Wiring an ST 700 Basic Transmitter....................................................................................142
12.7.1 Overview ......................................................................................................................143
12.7.2 Digital System Integration Information........................................................................146
12.7.3 Wiring Variations.........................................................................................................147
12.7.4 Wiring Procedure..........................................................................................................148
12.7.5 Lightning Protection.....................................................................................................149
12.7.6 Supply Voltage Limiting Requirements.......................................................................150
12.7.7 Process Sealing.............................................................................................................151
12.7.8 Explosion-Proof Conduit Seal......................................................................................152
12.8 Startup ..................................................................................................................................153
12.8.1 Overview ......................................................................................................................154
12.8.2 Startup Tasks................................................................................................................155
12.8.3 Output Check Procedures.............................................................................................156
12.8.4 Constant Current Source Mode Procedure...................................................................157
13. Operation_ST 700 Basic Transmitter.......................................................................................158
13.1 Overview..............................................................................................................................158
13.2 External Two-Button Operation...........................................................................................158
13.2.1 The Standard Display Menu.........................................................................................160
13.2.2 Standard Display Abbreviations:..................................................................................197
13.2.3 Data Entry.....................................................................................................................198
13.2.4 Editing a Numeric value...............................................................................................199
13.2.5 Selecting a new setting from a list of choices ..............................................................200
13.3 Two Button Operation with no Display Installed.................................................................201
13.3.1 Zero Adjustment...........................................................................................................202
13.3.2 Span Adjustment ..........................................................................................................203
13.3.3 Zero Correction ............................................................................................................204
13.4 Changing the Default Failsafe Direction..............................................................................205
13.4.1 Procedure to Establish Failsafe Operation....................................................................206

Page x ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
13.5 Monitoring the Standard Displays ....................................................................................... 207
13.5.1 Standard Display.......................................................................................................... 208
14. Maintenance_ST 700 Basic Transmitter.................................................................................. 209
14.1 Overview.............................................................................................................................. 209
14.2 Preventive Maintenance Practices and Schedules................................................................ 209
14.3 Inspecting and Cleaning Barrier Diaphragms...................................................................... 209
14.4 Replacing the Communication Module ............................................................................... 212
14.5 Replacing the Meter Body ................................................................................................... 214
15. Calibration_ST 700 Basic Transmitter..................................................................................... 218
15.1 Recommendations for Transmitter Calibration.................................................................... 218
15.2 Calibration Procedures......................................................................................................... 218
16. Troubleshooting_ST 700 Basic Transmitter............................................................................ 219
16.1 Overview.............................................................................................................................. 219
16.2 Critical Diagnostics Screens ................................................................................................ 219
16.2.1 Fault Conditions and Recommended Corrective Actions –Standard Display............ 220
17. Parts List_ST 700 Basic Transmitter ....................................................................................... 221
17.1 Overview.............................................................................................................................. 221
Appendix A - PRODUCT CERTIFICATIONS for the ST 700 Standard and Basic Transmitter.. 236
Glossary ........................................................................................................................................... 255

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page xi
List of Figures
Figure 1 –ST 700 Standard Transmitter Major Assemblies....................................................................4
Figure 2 –ST 700 Standard Transmitter Electronics Housing Components............................................4
Figure 3 –ST 700 Standard Transmitter - Typical Name Plate................................................................5
Figure 4 –ST 700 Standard Transmitter - Typical Bracket and Flange Mounted Installations.............14
Figure 5 - ST 700 Standard Transmitter - Typical Flush Mounted Installation.....................................15
Figure 6 –ST 700 Standard Transmitter - Angle Mounting Bracket Secured to a Horizontal or Vertical
Pipe.........................................................................................................................................................17
Figure 7 –ST 700 Standard Transmitter - Inline Model Mounted to an Optional Bracket....................18
Figure 8 –ST 700 Standard Transmitter - Rotating the Electronics Housing........................................18
Figure 9 –ST 700 Standard Transmitter - Using a Spirit Balance to Level a Transmitter ....................19
Figure 10 –ST 700 Standard Transmitter - Tank-Flange Mounted Transmitter....................................20
Figure 11 –ST 700 Standard Transmitter - Representative Remote Diaphragm Seal Transmitter
Installation..............................................................................................................................................21
Figure 12 –ST 700 Standard Transmitter - Typical 3-Valve Manifold with Blow-Down Piping.........23
Figure 13 –ST 700 Standard Transmitter - Flange Adapter Removal and Replacement......................26
Figure 14 –ST 700 Standard Transmitter - Operating Ranges..............................................................27
Figure 15 –ST 700 Standard Transmitter - 3-Screw Terminal Board and Grounding Screw...............28
Figure 16 –ST 700 Standard Transmitter - Current Loop Test Connections ........................................41
Figure 17 –ST 700 Standard Transmitter - Three-Button Option.........................................................42
Figure 18 –ST 700 Standard Transmitter - Two-Button Option...........................................................51
Figure 19 –ST 700 Standard Transmitter - Locating the Failsafe and Write Protect Jumpers..............83
Figure 20 –ST 700 Standard Transmitter - Basic Display with Process Variable Format....................87
Figure 21 –ST 700 Standard Transmitter - Standard Display with Process Variable Format...............89
Figure 22 –ST 700 Standard Transmitter - DP Transmitter Head Disassembly ...................................91
Figure 23 –ST 700 Standard Transmitter - Head Bolt Tightening Sequence........................................92
Figure 24 –ST 700 Standard Transmitter - PWA Replacement............................................................93
Figure 25 –ST 700 Standard Transmitter - Disassembly for Meter Body Replacement.......................95
Figure 26 –ST 700 Standard Transmitter - Hardware Location to Remove the Meter Assembly........96
Figure 27 –ST 700 Standard Transmitter - Meter Body Reassembly ...................................................97
Figure 28 –ST 700 Standard Transmitter - Head Bolt Tightening Sequence........................................97
Figure 29 –ST 700 Standard Transmitter - Angle and Flat Bracket Parts...........................................104
Figure 30 –ST 700 Standard Transmitter - Electronic Housing, Display End....................................105
Figure 31 –ST 700 Standard Transmitter - Electronic Housing, Terminal Block End .......................107
Figure 32 –ST 700 Standard Transmitter - Major Assemblies............................................................108
Figure 33 - ST 700 Standard Transmitter - ST 700 Models STD720, 730, 770 ..................................111
Figure 34 –ST 700 Standard Transmitter - STG730, 740, 770 and STA722, 740 Transmitter Body.114
Figure 35 –ST 700 Standard Transmitter - Inline Gauge and Inline Atmospheric Meter Body Bodies
..............................................................................................................................................................115
Figure 36 –ST 700 Standard Transmitter - Extended Flange Design..................................................116
Figure 37 - ST 700 Standard Transmitter - Flush Flange Design.........................................................116
Figure 38 - ST 700 Standard Transmitter - Pseudo Flange Design......................................................117
Figure 39 –ST 700 Standard Transmitter - Remote Seal Diaphragm..................................................117
Figure 40 - ST 700 Standard Transmitter - Flush Mount Meter Body.................................................118

Page xii ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
Figure 41 –ST 700 Basic Transmitter - Major Assemblies................................................................. 120
Figure 42 –ST 700 Basic transmitter Electronics Housing Components............................................ 120
Figure 43 –ST 700 Basic Transmitter - Name Plate........................................................................... 121
Figure 44 –ST 700 Basic Transmitter - Typical Bracket Mounted and Flange Mounted Installations
.............................................................................................................................................................. 129
Figure 45 - ST 700 Basic Transmitter - Typical Flush Mounted Transmitter Installation .................. 130
Figure 46 –ST 700 Basic Transmitter - Angle Mounting Bracket Secured to a Horizontal or Vertical
Pipe ...................................................................................................................................................... 132
Figure 47 –ST 700 Basic Transmitter - Inline Model Mounted to an Optional Bracket .................... 133
Figure 48 –ST 700 Basic Transmitter - Rotating the Electronics Housing......................................... 133
Figure 49 –ST 700 Basic Transmitter, using a Spirit Balance to Level a Transmitter ....................... 134
Figure 50 –ST 700 Basic Transmitter, Tank-Flange Mounted Transmitter........................................ 135
Figure 51 –ST 700 Basic Transmitter - Representative Remote Diaphragm Seal Transmitter
Installation............................................................................................................................................ 136
Figure 52–ST 700 Basic Transmitter - Typical 3-Valve Manifold with Blow-Down Piping............. 138
Figure 53 –ST 700 Basic Transmitter - Flange Adapter Removal and Replacement......................... 141
Figure 54 –ST 700 Basic Transmitter - Operating Ranges................................................................. 143
Figure 55 –ST 700 Basic Transmitter - 3-Screw Terminal Board and Grounding Screw.................. 144
Figure 56 –ST 700 Basic Transmitter - Current Loop Test Connections ........................................... 157
Figure 57 –ST 700 Basic Transmitter - Two-Button Option.............................................................. 158
Figure 58 –ST 700 Basic Transmitter - Two-Button Option.............................................................. 159
Figure 59 –ST 700 Basic Transmitter - Locating the Failsafe and Write Protect Jumpers................. 206
Figure 60 –ST 700 Basic Transmitter - Standard Display with Process Variable Format.................. 208
Figure 61 –ST 700 Basic Transmitter - DP Transmitter Head Disassembly ...................................... 210
Figure 62 –ST 700 Basic Transmitter - Head Bolt Tightening Sequence........................................... 211
Figure 63 –ST 700 Basic Transmitter - PWA Replacement............................................................... 212
Figure 64 –ST 700 Basic Transmitter - Disassembly for Meter Body Replacement.......................... 214
Figure 65 –ST 700 Basic Transmitter - Hardware Location to Remove the Meter Assembly........... 215
Figure 66 –ST 700 Basic Transmitter - Meter Body Reassembly ...................................................... 216
Figure 67 –ST 700 Basic Transmitter - Head Bolt Tightening Sequence........................................... 216
Figure 68 –ST 700 Basic Transmitter - Angle and Flat Bracket Parts................................................ 222
Figure 69 –ST 700 Basic Transmitter - Electronic Housing, Display End......................................... 224
Figure 70 –ST 700 Basic Transmitter - Electronic Housing, Terminal Block End............................ 225
Figure 71 –ST 700 Basic Transmitter - Major Assemblies................................................................. 226
Figure 72 - ST 700 Basic Transmitter Models STD725, 735, 775 –refer to Table 45........................ 229
Figure 73 –ST 700 Basic Transmitter - STG735, 745, 775 and STA725, 745 Transmitter Body...... 231
Figure 74 –ST 700 Basic Transmitter - Inline Gauge and Inline Atmospheric Meter Body Bodies.. 232
Figure 75 –ST 700 Basic Transmitter - Extended Flange Design....................................................... 233
Figure 76 - ST 700 Basic Transmitter - Flush Flange Design ............................................................. 233
Figure 77 - ST 700 Basic Transmitter - Pseudo Flange Design........................................................... 234
Figure 78 –ST 700 Basic Transmitter - Remote Seal Diaphragm....................................................... 234
Figure 79 - ST 700 Basic Transmitter - Series 700 Flush Mount Meter Body.................................... 235

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page xiii

Page xiv ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
List of Tables
Table 1 –ST 700 Standard andf Basic model types ................................................................................ 2
Table 2 –Features and Options_ST 700 Standard transmitter................................................................. 3
Table 3 –Available Display Characteristics............................................................................................ 6
Table 4 –ST 700 Standard transmitter - Basic Display Diagnostics Messages..................................... 10
Table 5 - ST 700 Standard Transmitter - Mounting Bracket procedure ................................................ 17
Table 6 –ST 700 Standard Transmitter - Flange Mounting Guidelines................................................ 21
Table 7 –ST 700 Standard Transmitter - Remote Diaphragm Mounting Details ................................. 21
Table 8 –ST 700 Standard Transmitter - Suggested Connection Locations......................................... 24
Table 9 –Three-Button Option Functions............................................................................................. 43
Table 10 –The Basic Display Menus.................................................................................................... 45
Table 11 –Three-Button Data Entry...................................................................................................... 48
Table 12 –ST 700 Basic Transmitter: Standard Display Menus........................................................... 52
Table 13 –ST 700 Basic Transmitter - Extended Display Menu ...........Error! Bookmark not defined.
Table 14 –ST 700 Basic Transmitter - The Standard Display abbreviations........................................ 71
Table 15 –Two-Button Data Entry......................................................................................................... 72
Table 16 –ST 700 Standard Transmitter - HART and DE Failsafe and Write Protect Jumpers........... 84
Table 17 –ST 700 Standard Transmitter - Fieldbus Simulation and Write Protect Jumpers................ 85
Table 18 –Head Bolt Torque Values..................................................................................................... 92
Table 19 –ST 700 Standard Transmitter - Fault Conditions and Recommended Corrective Actions for
basic Display........................................................................................................................................ 101
Table 20 –ST 700 Standard Transmitter - Fault Conditions and Recommended Corrective Actions.102
Table 21 –ST 700 Standard Transmitter - Summary List of Recommended Spare Parts................... 103
Table 22 –ST 700 Standard Transmitter - Angle and Flat Bracket Parts............................................ 105
Table 23 –ST 700 Standard Transmitter Major Assemblies............................................................... 106
Table 24 –ST 700 Standard Transmitter Models STD720, 730 & 770............................................... 109
Table 25 –ST 700 Standard Transmitter - Parts for STG730, 740, 770 and STD720, 730, 770 and
STA722, 740 Transmitter Body........................................................................................................... 112
Table 26 - ST 700 Standard Transmitter - Inline Gauge and Inline Atmospheric Meter Body Parts.. 115
Table 27 –ST 700 Standard Transmitter - Flange-Mounted Meter Body Parts –STF724, 732 ......... 116
Table 28 –ST 700 Standard Transmitter - Flush Mount Meter Body Parts........................................ 118
Table 29 –ST 700 Basic Transmitter - Features and Options............................................................. 119
Table 30 –ST 700 Basic Transmitter - Available Display Characteristics.......................................... 122
Table 31 - ST 700 Basic Transmitter - Mounting Bracket procedure.................................................. 132
Table 32 –ST 700 Basic Transmitter, Flange Mounting Guidelines................................................... 136
Table 33 –ST 700 Basic Transmitter - Remote Diaphragm Mounting Details................................... 136
Table 34 –ST 700 Basic Transmitter - Suggested Connection Locations........................................... 139
Table 35 –ST 700 Standard Transmitter: Standard Display Menus.................................................... 161
Table 36 - ST 700 Standard Transmitter: Standard Display Menus Russian....................................... 178
Table 37 –ST 700 Standard Transmitter - Extended Display Menu......Error! Bookmark not defined.
Table 38 - ST 700 Standard Transmitter - Extended Display Menu Russian....... Error! Bookmark not
defined.
Table 39 –The Standard Display abbreviations.................................................................................. 197
Table 40 –ST 700 Basic Transmitter - Two-Button Data Entry......................................................... 198

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page xv
Table 41 –ST 700 Basic Transmitter - HART Failsafe and Write Protect Jumpers............................206
Table 42 –Head Bolt Torque Values...................................................................................................211
Table 43 –ST 700 Basic Transmitter - Fault Conditions and Recommended Corrective Actions......220
Table 44 –ST 700 Basic Transmitter - Summary List of Recommended Spare Parts.........................221
Table 45 - ST 700 Basic Transmitter - Angle and Flat Bracket Parts..................................................223
Table 46 –ST 700 Basic Transmitter - Major Assemblies ..................................................................224
Table 47 –ST 700 Basic Transmitter STG735, 745, 775, STD 725, 735, 775 & STA725 & 745,
Transmitter Body..................................................................................................................................227
Table 48 –ST 700 Basic Transmitter - Parts for STG725, 735, 745, 775, 745 Transmitter Body......230
Table 49 - ST 700 Basic Transmitter - Inline Gauge and Inline Atmospheric Meter Body Parts........232
Table 50 –ST 700 Basic Transmitter - Flange-Mounted Meter Body Parts........................................233
Table 51 –ST 700 Basic Transmitter - Flush Mount Meter Body Parts..............................................235

Revision 12 ST 700 SmartLine Pressure Transmitters User’s Manual Page 1
1. ST 700 Transmitter Series
1.1 Overview
SmartLine pressure transmitter ST 700 family conists of a series of ST 700 standard transmitter
models and a series of ST 700 basic transmitter models.
Note: The entire manual is broadly classified in two sections for standard and basic
transmitters.
The first half of this manual, sections 2through 9, are for ST 700 standard transmitter model series
and the second half, sections 10 through 17, are applicable only to ST 700 basic transmitter model
series.
Which type of transmitter do I have?
To determine which version you have:
Look at the nameplate on top of the unit shown in Figure 3. Refer to the model number
If you have a ST 700 standard transmitter, use sections 2through 9.
If you have a ST 700 basic transmitter, use sections 10 through 17.
Appendix A - PRODUCT CERTIFICATIONS is applicable for both ST 700 standard and basic
transmitters.
Table 1 below to identify which type of transmitter you have; standard or basic.
The standard transmitter will have a three button assembly (see Figure 17), the basic transmitter with
have two button assembly (see Figure 18).
3-button Standard ST 700 Transmitter 2-button Basic ST 700 Transmitter

Page 2 ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
Table 1 –ST 700 Standard andf Basic model types
Transmitter
Configuration
Smart Line Pressure ST700
Standard Models
Basic Models
Dual head DP
STD720/730/770
STD725/735/775
Dual head GP
STG730/740/770
STG735/745/775
Inline GP
STG73L/74L/77L/78L/79L
STG73S/74S/77S/78S/79S
Inline flush GP
STG73P
STG73SP
Dual head AP
STA722/740
STA725/745
Inline AP
STA72L/74L/77L
STA72S/74S/77S
Flush flanged level
STF724/732
STF725/735
Pseudo flanged level
STF72F/73F
STF72P/73P
Remote seal DP/GP
STR73D/74G
STR735D/745G

Revision 13 ST 700 SmartLine Pressure Transmitters User’s Manual Page 3
, 2. Introduction to the ST 700 Standard Transmitter
This section is an introduction to the physical and functional characteristics Honeywell’s family of the
ST 700 Standard transmitters.
2.1 Features and Options
The ST 700 standard transmitter is available in a variety of models for measuring Differential
Pressure (DP), Gauge Pressure (GP), and Absolute Pressure (AP). Table 2lists the protocols, human
interface (HMI), materials, approvals, and mounting bracket options.
Table 2 –Features and Options_ST 700 Standard transmitter
Feature/Option
Standard/Available Options
Communication Protocols
HARTversion 7, Digitally Enhanced (DE), Fieldbus
Human-Machine Interface (HMI)
Options (Basic Display/Standard
Display)
Basic Digital Display:
•Three-button programming (optional)
•Basic display language: English only
Standard Display (HARTonly):
•Two integral buttons programming (optional).
•Standard display languages: English and
Russian.
•Two-mode operations: PV display and Menu
Navigation.
Calibration
Single
Approvals
See Appendix A for details
FM, CSA, ATEX, IECEx, SAEx, INMETRO, NEPSI, EAC,
KOSHA
Mounting Brackets
Angle/flat carbon steel/304 and 316 stainless steel,
Marine 304 stainless steel, 316 Stainless Steel.
Integration Tools
Experion
The three-button option is available for the basic display.
The two-button option is available for the standard display.
Also, for the basic display, the three button reed switch is used only for span & zero
correction and not for the display navigation.

Page 4 ST 700 SmartLine Pressure Transmitters User’s Manual Revision 13
2.1.1 Physical Characteristics
As shown in Figure 1, the ST 700 standard is packaged in two major assemblies: the electronics
housing and the meter body. The elements in the electronic housing respond to setup commands and
execute the software and protocol for the different pressure measurement types. Figure 2 shows the
assemblies in the electronics housing with available options.
The meter body provides connection to a process system. Several physical interface configurations
are available, as determined by the mounting and mechanical connections, all of which are described
in the Installation section of this manual.
Figure 1 –ST 700 Standard Transmitter Major Assemblies
Figure 2 –ST 700 Standard Transmitter Electronics Housing
Components