Honeywell ST 3000 User manual

ST 3000 Smart Transmitter
Release 300 with HARTCommunications Option
User Manual
Doc. No.: 34-ST-25-17
Revision Date: 10/05

Notices and Trademarks
ii ST 3000 HART Transmitter Release 300 User Manual 10/05
Notices and Trademarks
Copyright 2005 by Honeywell Inc.
June 2005
While this information is presented in good faith and believed to be accurate, Honeywell disclaims the implied
warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may
be stated in its 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 is a U.S. registered trademarks Of Honeywell Inc.
Other brand or product names are trademarks of their respective owners.
Honeywell International, Inc.
Industrial Measurement and Control
2500 W. Union Hills Drive
Phoenix, Arizona 85027
Patent Notice
This product is covered by one or more of the following U.S. Patents: 4,520,488; 4,567,466; 4,494,183;
4,502,335; 4,592,002; 4,553,104; 4,541,282; 4,806,905; 4,797,669; 4,735,090; 4,768,382; 4,787,250;
4,888,992; 5,811,690; 5,875,150; 5,765,436; 4,734,873; 6,041,659 and other patents pending.

About This Document
10/05 ST 3000 HART Transmitter Release 300 User Manual
iii
About This Document
Revision Notes
The following list provides notes concerning all revisions of this document.
Doc ID Date Notes
34-ST-25-17 9/99 1st issue of document.
7/00 Updated illustrations to show new terminal block (three screw
terminal) and R300 electronics housing.
10/04 Updated bolt torque specs, parts lists.
2/05 Updated for CFF Flange Mount
6/05 Updated with STA info.
10/05 Updated bolt torque and write protect.
Contacts
World Wide Web
The following lists Honeywell’s World Wide Web sites that will be of interest to our industrial automation and
control customers.
Honeywell Organization WWW Address (URL)
Corporate http://www.honeywell.com
Industrial Automation and Control http://www.iac.honeywell.com
International http://www.honeywell.com/Business/global.asp
Telephone
Contact us by telephone at the numbers listed below.
Organization Phone Number
United States and Canada Honeywell Inc.
Industrial Automation and Control
1-800-343-0228 Sales
1-800-525-7439 Service
Asia Pacific Honeywell Asia Pacific Inc.
Hong Kong
(852) 8298298
Europe Honeywell PACE
Brussels, Belgium
[32-2] 728-2111
Latin America Honeywell Inc.
Sunrise, Florida U.S.A.
[phone]

About This Document
ST 3000 HART Transmitter Release 300 User Manual 10/05
iv
Technical Assistance
If you encounter a problem with your ST 3000 Smart Transmitter, check to see how your transmitter is
currently configured to verify that all selections are consistent with your application.
If the problem persists, you can reach Honeywell’s Solution Support Center for technical support by
telephone during normal business hours. An engineer will discuss your problem with you. Please have your
complete model number, serial number, and software revision number on hand for reference. You can find
the model and serial numbers on the transmitter nameplates. You may also seek additional help by
contacting the Honeywell distributor who supplied your ST 3000 transmitter.
Technical Assistance Contact
By Telephone Honeywell Solution Support Center In the U. S: 1-800-423-9883
Outside the U.S:
1-602-313-6510
By E-mail [e-mail]
Problem Resolution
If it is determined that a hardware problem exists, a replacement transmitter or part will be shipped with
instructions for returning the defective unit. Please do not return your transmitter without authorization
from Honeywell’s Solution Support Center or until the replacement has been received.
Symbol definitions
The following table lists those symbols used in this document to denote certain conditions.
Symbol Definition
This CAUTION symbol on the equipment refers the user to the Product Manual for
additional information. This symbol appears next to required information in the manual.
This WARNING symbol on the equipment refers the user to the Product Manual for
additional information. This symbol appears next to required information in the manual.
WARNING: risk of electrical shock. This symbol warns the user of a potential shock
hazard where HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or 60
VDC may be accessible.
ATTENTION, Electrostatic Discharge (ESD) hazards. 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.
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.

Contents
10/05 ST 3000 HART Transmitter Release 300 User Manual
v
Contents
1— Introduction - First Time Users Only ....................................................................1
Overview..............................................................................................................................................1
ST 3000 Smart Transmitters ...............................................................................................................2
HART Communicator ..........................................................................................................................7
Transmitter Order ................................................................................................................................8
Local Smart Meter Option ...................................................................................................................9
2— Quick Start Reference ....................................................................................... 11
Overview............................................................................................................................................11
Getting ST 3000 Transmitter On-Line Quickly ..................................................................................12
3— Preinstallation Considerations ...........................................................................13
Overview............................................................................................................................................13
CE Conformity (Europe) Notice.........................................................................................................13
Considerations for ST 3000 Transmitter ...........................................................................................14
Considerations for HART communicator...........................................................................................16
Considerations for Local Smart Meter Option ...................................................................................16
4— Installation .........................................................................................................17
Overview............................................................................................................................................17
Mounting ST 3000 Transmitter..........................................................................................................17
Piping ST 3000 Transmitter...............................................................................................................28
Wiring ST 3000 Transmitter ..............................................................................................................33
5— Getting Started...................................................................................................39
Overview............................................................................................................................................39
Establishing Communications ...........................................................................................................39
Making Initial Checks.........................................................................................................................42
6— Configuration .....................................................................................................45
Overview............................................................................................................................................45
Configuration Overview .....................................................................................................................46

Contents
ST 3000 HART Transmitter Release 300 User Manual 10/05
vi
Tag— Entering a Tag Number ..........................................................................................................55
PV unit— Selecting Unit of Pressure Measurement .........................................................................56
Range Values— Setting PV URV and PV LRV.................................................................................57
Device Information.............................................................................................................................59
Pressure transfer function— Selecting Output Conformity ...............................................................60
PV damping— Adjusting Damping Time ...........................................................................................62
SV units— Selecting Secondary Variable units ................................................................................63
Poll addr— Selecting Poll Address....................................................................................................64
Disconnecting the Communicator .....................................................................................................64
7— Start-up.............................................................................................................. 65
Overview............................................................................................................................................65
Start-up Tasks ...................................................................................................................................66
Running Analog Output .....................................................................................................................67
Flow Measurement with DP Transmitter ...........................................................................................69
Pressure Measurement with DP Transmitter ....................................................................................71
Liquid Level Measurement – Vented Tank........................................................................................73
Liquid Level Measurement – Pressurized Tank ................................................................................75
Pressure or Liquid Level Measurement with GP Transmitter............................................................78
Pressure Measurement with AP........................................................................................................81
Liquid Level Measurement with DP Transmitter with Remote Seals ................................................83
8— Operation...........................................................................................................87
Introduction........................................................................................................................................87
Accessing Operation Data.................................................................................................................87
Changing Default Failsafe Direction and Write Protect Jumpers ......................................................90
Writing Data in the Message Area.....................................................................................................92
Saving and Restoring a Configuration Database ..............................................................................93
9— Maintenance ......................................................................................................97
Introduction........................................................................................................................................97
Preventive Maintenance....................................................................................................................97
Inspecting and Cleaning Barrier Diaphragms ...................................................................................97
Replacing Printed Wiring Assembly (PWA).....................................................................................100
Replacing Meter Body .....................................................................................................................103
10— Calibration .....................................................................................................107

Contents
10/05 ST 3000 HART Transmitter Release 300 User Manual
vii
Introduction......................................................................................................................................107
Overview..........................................................................................................................................107
Calibrating Analog Output Signal ....................................................................................................108
Calibrating Range............................................................................................................................109
Resetting Calibration .......................................................................................................................111
11— Troubleshooting ............................................................................................. 113
Introduction......................................................................................................................................113
Troubleshooting Overview...............................................................................................................113
To access transmitter diagnostics ...................................................................................................113
Diagnostic Messages ......................................................................................................................114
Interpreting Messages .....................................................................................................................116
Clearing Critical Status ....................................................................................................................118
12— Parts List........................................................................................................119
Replacement Parts ..........................................................................................................................119
13— Reference Drawings ......................................................................................137
Wiring Diagrams ..............................................................................................................................137
Appendix A— Smart Meter Reference ...................................................................139
Introduction......................................................................................................................................139
Smart Meter Display ........................................................................................................................141
Smart Meter Specifications .............................................................................................................143
Setting Range Values (Local Zero and Span).................................................................................144
Configuring Smart Meter Using Pushbuttons ..................................................................................147
Setting smart meter display using the HART communicator...........................................................160
Typical smart meter indications.......................................................................................................163
Operation error codes......................................................................................................................164
Meter/transmitter interaction............................................................................................................165
Appendix B— Configuration Record Sheet ............................................................ 167
ST 3000 R300 Smart Transmitter with HART Communications
.........................................................................................................................................................167
Appendix C – Freeze Protection of Transmitters....................................................169
Possible Solutions/Methods ............................................................................................................169

Contents
ST 3000 HART Transmitter Release 300 User Manual 10/05
viii
Appendix D —Hazardous Area Classifications ......................................................179
Introduction......................................................................................................................................179
North American Hazardous Location Standards.............................................................................179
International Electrotechnical Commission (IEC) Classifications....................................................184
Enclosure Ratings ...........................................................................................................................187
Index ......................................................................................................................189

Tables
10/05 ST 3000 HART Transmitter Release 300 User Manual
ix
Tables
Table 1 ST 3000 Pressure Transmitter Family ..............................................................................................................5
Table 2 Local Smart Meter Options ............................................................................................................................10
Table 3 Start-up Tasks Reference................................................................................................................................12
Table 4 Operating Temperature Limits (Transmitters with Silicone Fill Fluid DC200) .............................................15
Table 5 Transmitter Maximum Allowable Working Pressure (MAWP) Ratings........................................................16
Table 6 Mounting ST 3000 Transmitter to a Bracket ..................................................................................................18
Table 7 Zero Corrects Procedure for Transmitters with a Small Differential Pressure Span ......................................21
Table 8 Flush Mount Transmitter Installation .............................................................................................................24
Table 9 Mounting Remote Diaphragm Seal Transmitter.............................................................................................26
Table 10 Suggested Transmitter Location for Given Processes ..................................................................................29
Table 11 Process Connections.....................................................................................................................................30
Table 12 Flange Description........................................................................................................................................31
Table 13 Installing Flange Adapter .............................................................................................................................32
Table 14 Wiring the Transmitter .................................................................................................................................35
Table 15 Starting Communications with Transmitter..................................................................................................41
Table 16 Reviewing Factory-Set Configuration Parameters .......................................................................................42
Table 17 Summary of Pressure Transmitter Configuration Parameters ......................................................................48
Table 18 Entering Tag Number ...................................................................................................................................55
Table 19 Selecting Engineering Units .........................................................................................................................56
Table 20 Keying in LRV and URV .............................................................................................................................57
Table 21 Setting LRV and URV to Applied Pressures................................................................................................58
Table 22 Viewing/Entering Device Information Data.................................................................................................59
Table 23 Selecting Output Conformity........................................................................................................................60
Table 24 Adjusting Damping Time .............................................................................................................................62
Table 25 Selecting SV Temperature Units ..................................................................................................................63
Table 26 Selecting Poll Address..................................................................................................................................64
Table 27 Start-up Procedure Reference .......................................................................................................................66
Table 28 Using Transmitter in Constant-Current Source (Output) Mode ...................................................................67
Table 29 Starting Up DP Transmitter for Flow Measurement.....................................................................................69
Table 30 Starting Up DP Transmitter for Pressure Measurement ...............................................................................71
Table 31 Starting Up DP Transmitter for Liquid Level Measurement in Vented Tank...............................................73
Table 32 Starting Up DP Transmitter for Liquid Level Measurement in Pressurized Tank........................................76
Table 33 Starting Up GP Transmitter for Pressure or Liquid Level Measurement .....................................................79
Table 34 Starting Up AP Transmitter for Pressure Measurement. ..............................................................................82
Table 35 Starting Up DP Transmitter with Remote Seals for Liquid Level Measurement .........................................83
Table 36 Summary of Keystrokes for Operation Data Access ....................................................................................88
Table 37 Changing Default Failsafe Direction or Write Protect Jumper.....................................................................91
Table 38 Writing Data in the Message Area................................................................................................................92
Table 39 Saving a Configuration Database .................................................................................................................94
Table 40 Downloading a Configuration Database.......................................................................................................95
Table 41 Inspecting and Cleaning Barrier Diaphragms.............................................................................................100
Table 42 Process Head Bolt Torque Ratings .............................................................................................................102
Table 43 Replacing PWA ..........................................................................................................................................102
Table 44 Replacing Meter Body Only.......................................................................................................................105
Table 45 Calibrating Output Signal for Transmitter in Analog Mode.......................................................................110
Table 46 Calibrating Measurement Range ................................................................................................................111
Table 47 Resetting Calibration Data..........................................................................................................................113
Table 48 Summary of Diagnostic Messages for Critical Failures .............................................................................116
Table 49 Summary of Diagnostic Messages for Non-Critical Failures .....................................................................117
Table 50 Summary of Diagnostic Messages for Communication Errors...................................................................117
Table 51 Diagnostic Message Interpretation Table ...................................................................................................118
Table 52 Resetting the Transmitter............................................................................................................................120

Tables
ST 3000 HART Transmitter Release 300 User Manual 10/05
x
Table 53 Major ST 3000 Smart Transmitter Parts Reference....................................................................................123
Table 54 Parts Identification for Callouts in Figure 42 and Figure 43 ......................................................................125
Table 55 Parts Identification for Callouts in Figure 44. ............................................................................................126
Table 56 Parts Identification for Callouts in Figure 45. ............................................................................................129
Table 57 Parts Identification for Callouts in Figure 46. ............................................................................................130
Table 58 Replacement GP and AP Process Head Part Numbers for Narrow Profile Meter Body ...........................131
Table 59 Parts Identification for Callouts in Figure 47. ............................................................................................132
Table 60 Parts Identification for Callouts in Figure 48. ............................................................................................133
Table 61 Parts Identification for Callouts in Figure 49. ............................................................................................134
Table 62 Parts Identification for Callouts in Figure 50. ............................................................................................136
Table 63 Parts Identification for Callouts in Figure 51. ............................................................................................137
Table 64 Summary of Recommended Spare Parts. ...................................................................................................139
Table A-1 Description of Smart Meter Display Indicators........................................................................................141
Table A-2 Smart Pushbutton Description..................................................................................................................142
Table A-3 Smart meter specifications. ......................................................................................................................143
Table A-4 Setting Range Values Using Local Zero and Span Adjustments..............................................................144
Table A-5 Smart Meter Engineering Units Code ......................................................................................................148
Table A-6 Selecting Engineering Units .....................................................................................................................149
Table A-7 Setting Lower Display Values for Smart Meter Display..........................................................................152
Table A-8 Setting Upper Display Value for Smart Meter Display............................................................................155
Table A-9 Smart meter display setup using HART communicator ...........................................................................161
Table A-10 Summary of Typical Smart Meter Indications. ......................................................................................163
Table A-11 Smart Meter Error Codes and Descriptions............................................................................................164
Table C-1 Temperature Range of Freeze Protection Systems ...................................................................................176
Table C-2 Steam Pressure Versus Steam Temperature Values .................................................................................177
Table D-1 Temperature Identification Numbers (NEC/CEC) ...................................................................................181
Table D-2 FM Entity Parameters...............................................................................................................................183
Table D-3 Temperature Identification Numbers (IEC)..............................................................................................185
Table D-4 NEMA Enclosure Type Numbers and Comparable IEC Enclosure Classification ..................................188
Table 1 Additions to the User Manual.......................................................................................................................200
Table 2 Torque Table - Process Head Bolts/Nuts.....................................................................................................201
Table 3 Parts Identification for Callouts in Figure 1 ................................................................................................202
Table 4 Process Head Assembly Kits .......................................................................................................................204
Table 5 Pressure Specification and Ratings Summary Comparisons .......................................................................205

Figures
10/05 ST 3000 HART Transmitter Release 300 User Manual
xi
Figures
Figure 1 Typical ST 3000 Differential Pressure Transmitter.........................................................................................2
Figure 2 Functional Block Diagram for Transmitter in Analog Mode of Operation. ....................................................3
Figure 3 Typical Communication Interface...................................................................................................................7
Figure 4 Typical ST 3000 Transmitter Order Components. ..........................................................................................8
Figure 5 ST 3000 with Local Smart Meter Option. .......................................................................................................9
Figure 6 Typical Mounting Area Considerations Prior to Installation.........................................................................14
Figure 7 Typical Bracket Mounted and Flange Mounted Installations........................................................................18
Figure 8 Leveling Transmitters ...................................................................................................................................21
Figure 9 Typical Flange Mounted Transmitter Installation .........................................................................................23
Figure 10 Typical Flush Mounted Transmitter Installation .........................................................................................24
Figure 11 Typical Flange and Pipe Mounted Installations ..........................................................................................25
Figure 12 Typical Remote Diaphragm Seal Transmitter Installation. .........................................................................27
Figure 13 Typical 3-Valve Manifold and Blow-Down Piping Arrangement. .............................................................28
Figure 14 Typical Piping Arrangement for ½” NPT Process Connection...................................................................29
Figure 15 Operating Range for ST 3000 Transmitters. ...............................................................................................33
Figure 16 ST 3000 Transmitter Terminal Blocks ........................................................................................................34
Figure 17 Ground Connection for Lightning Protection..............................................................................................36
Figure 18 Typical Communicator Connections...........................................................................................................40
Figure 19 Write Protection and Failsafe Direction Jumper Location ..........................................................................43
Figure 20 Smart Meter Display with All Indicators Lit...............................................................................................44
Figure 21 Summary of Configuration Process.............................................................................................................46
Figure 22 Communicator and ST 3000 Transmitter Memories...................................................................................47
Figure 23 Online (or HOME) Menu Summary............................................................................................................50
Figure 24 HART Communicator Menu Summary ......................................................................................................51
Figure 25 HART Communicator Keyboard ................................................................................................................52
Figure 26 Square Root Dropout Point .........................................................................................................................61
Figure 27 Typical Communicator and Meter Connections for Constant-Current Source (Output) Mode..................68
Figure 28 Typical Piping Arrangement for Flow Measurement with DP Type Transmitter .......................................69
Figure 29 Typical Piping Arrangement for Pressure Measurement with DP Type Transmitter..................................71
Figure 30 Typical Piping Arrangement for Liquid Level Measurement with DP Type Transmitter and Vented Tank73
Figure 31 Typical Piping Arrangement for Liquid Level Measurement with DP Type Transmitter and Pressurized
Tank. 75
Figure 32 Typical Piping Arrangement for Pressure Measurement with GP Type Transmitter..................................78
Figure 33 Typical Piping Arrangement for Liquid Level Measurement with GP Type Transmitter...........................79
Figure 34 Typical Piping Arrangement for Pressure Measurement with AP Type Transmitter..................................81
Figure 35 Typical Piping Arrangement for Liquid Level Measurement with DP Type Transmitter with Remote
Seals.83
Figure 36 Location of Failsafe and Write Protect Jumpers on PWA...........................................................................90
Figure 37 Summary of Save and Restore Database Function......................................................................................93
Figure 38 Disassembly of DP Transmitter Process Heads from Meter Body............................................................101
Figure 39 Typical Range Calibration Hookup...........................................................................................................112
Figure 40 Major ST 3000 Smart Transmitter Parts Reference. .................................................................................122
Figure 41 Major ST 3000 Smart Transmitter Parts Reference. .................................................................................123
Figure 42 Series 100/900 Electronics Housing - Electronics/Meter End...................................................................124
Figure 43 Series 100/900 Electronics Housing - Terminal Block End......................................................................124
Figure 44 Series 100 and Series 900 DP Meter Body for Models STD924 & STD930 C, D, G, H, K, and L and
STD974..............................................................................................................................................................125
Figure 45 Series 900 DP Meter Body for Models STD924 & STD930 A, B, E, F, and J .........................................128
Figure 46 Series 100 GP and AP Meter Bodies and Series 900 AP Meter Body ......................................................130
Figure 47 Series 900 Dual-Head GP Meter Bodies. ..................................................................................................132

Figures
ST 3000 HART Transmitter Release 300 User Manual 10/05
xii
Figure 48 Series 100 and Series 900 LGP/LAP Meter Body. ...................................................................................133
Figure 49 Series 900 Flush Mount Meter Body.........................................................................................................134
Figure 50 Series 100 and Series 900 Flange Mounted Meter Body. .........................................................................135
Figure 51 High Temperature Meter Body. ................................................................................................................137
Figure A-1 Smart Meter Display with All Indicators Lit...........................................................................................141
Figure A-2 Typical Setup for Setting Range Values Using Local Zero and Span Adjustments................................147
Figure C-1 Piping Installation for Sealing Liquid With Specific Gravity Heavier Than Process Fluid. ..................170
Figure C-2 Piping Installation for Sealing Liquid with Specific Gravity Lighter Than Process Fluid.....................170
Figure C-3 Piping Installation for Gas Flow..............................................................................................................171
Figure C-4 Piping Installation for Differential Pressure Transmitter with Metal Diaphragm Seals.........................172
Figure C-5 Piping Installation for Process Pressure Transmitter with Metal Diaphragm Seal.................................172
Figure C-6 Piping Installation for Differential Pressure Transmitter and Impulse Piping with Electric Heating and
Control...............................................................................................................................................................173
Figure C-7 Piping Installation for Process Pressure Transmitter and Impulse Piping with Electric Heating Control.174
Figure C-8 Piping Installation for Differential Pressure Transmitter and Impulse Piping with Steam Heating. ....... 175
Figure C-9 Piping Installation for Process Pressure Transmitter and Impulse Piping with Steam Heating. .............176
Figure 1 ST 3000 Model STD110, STD120, STD125, STD130, STD170, STD924, STD930 (Rev S or
greater)...............................................................................................................................................................201

IMPORTANT
10/05 ST 3000 HART Transmitter Release 300 User Manual
xiii
IMPORTANT
Before You Begin, Please Note
Transmitter Terminal Blocks
Depending on your transmitter options, the transmitter may be equipped with either a 3-screw or 5-screw
terminal block inside the electronics housing. This may affect how to connect the loop wiring and meter
wiring to the transmitter. See Table 14 in Section 4 for the terminal block connections for each type
terminal. Section 13 provides additional wiring diagrams showing alternate wiring methods.
-SIGNAL+
+-
TEST
Terminal
Block
Electronics
Housing
Internal
Ground
Terminal
3-Screw Terminal Block
+
+
-
-
L-
SIGNAL
METER
TESTSIGNAL
-
+
+
-
Terminal
Block
Electronics
Housing
Internal
Ground
Terminal
5-Screw Terminal Block

1— Introduction - First Time Users Only - Overview
10/05 ST 3000 HART Transmitter Release 300 User Manual
1
1— Introduction - First Time Users Only
Overview
About this section
This section is intended for users who have never worked with our ST 3000 Smart Transmitter with
HARTcommunications. It provides some general information to acquaint you with the ST 3000
transmitter and the HART communications interface.
Section contents
This section includes these topics:
• ST 3000 Smart Transmitters – Brief description of the ST 3000 transmitter form, functions and
identification.
• HART Communicator – Brief description of the communication interface used with the ST 3000
HART transmitter.
• Transmitter order – Describes the components shipped with a transmitter order.
• Local Smart Meter Option – Describes the smart meter options available with the transmitter.

1— Introduction - First Time Users Only - ST 3000 Smart Transmitters
ST 3000 HART Transmitter Release 300 User Manual 10/05
2
ST 3000 Smart Transmitters
About the transmitter
The ST 3000 Smart Transmitter comes in a variety of models for measurement applications involving one
of these basic types of pressure:
• Differential Pressure
• Gauge Pressure
• Absolute Pressure
The transmitter measures the process pressure and transmits an output signal proportional to the measured
variable over a 4 to 20 milliampere, two-wire loop. Its major components are an electronics housing and a
meter body as shown in Figure 1 for a typical differential pressure model transmitter.
Electronics
Housing
Meter Body
Figure 1 Typical ST 3000 Differential Pressure Transmitter.

1— Introduction - First Time Users Only - ST 3000 Smart Transmitters
10/05 ST 3000 HART Transmitter Release 300 User Manual
3
Functional block diagram
Besides the process variable (PV) output, the transmitter also provides its meter body temperature as a
secondary variable (SV) which is only available as a read-only parameter through the communicator
interface. See Figure 2.
A/D
DP or PP
Sensor
Temperature
Sensor
Static Pressure
Sensor
Meter Body Electronics Housing
Pressure
Factory
Characterization
Data
Modular Electronics Terminal Block
Proportional 4 to
20 mA PV output.
(Digital signal
imposed during
HART interface
communications)
D/A
PROM
Multiplexer
Microprocessor
Digital I/O
Figure 2 Functional Block Diagram for Transmitter in Analog Mode of Operation.

1— Introduction - First Time Users Only - ST 3000 Smart Transmitters
ST 3000 HART Transmitter Release 300 User Manual 10/05
4
Series and model number data
Honeywell’s line of ST 3000 Smart Transmitters includes these two series designations:
• Series 100 • Series 900
Each series includes several models to meet various process pressure measurement and interface
requirements. Each transmitter comes with a nameplate located on the top of the electronics housing that
lists its given “model number”. The model number format consists of a Key Number with several Table
selections as shown below.
Key Number
MeterBody
FlangeAssembly
Options
FactoryIdentification
Table I Table II Table III Table IV
BasicType
,
STD120 E1H 00000 S 1CBXXXX
You can quickly identify what series and basic type of transmitter you have from the third and fourth digits
in the key number. The letter in the third digit represents one of these basic transmitter types:
A = Absolute Pressure
D = Differential Pressure
F = Flange Mounted
G = Gauge Pressure
R = Remote Seals
The number in the fourth digit matches the first digit in the transmitter Series. Thus, a “1” means the
transmitter is a Series 100 and a “9” is a Series 900.
For a complete breakdown of the Table selections in your model number, please refer to the appropriate
Specification and Model Selection Guide that is provided as a separate document.
ATTENTION
Be aware that previous vintages of the ST 3000 transmitter with designations of Series 100,
Series 100e, Series 600, and Series 900 have been supplied at various times since the ST
3000 was introduced in 1983. While all these transmitters are functionally alike, there are
differences in housing and electronics design.
This manual only applies for Series 100, Release 300 and Series 900, Release 300
transmitters furnished with the HART communications option (option HC). Release 300
transmitters can be identified by the “R300” designation on the nameplate.

1— Introduction - First Time Users Only - ST 3000 Smart Transmitters
10/05 ST 3000 HART Transmitter Release 300 User Manual
5
ST 3000 transmitter family
Table 1 illustrates the various ST 3000 Release 300 pressure transmitters that are presently available.
Table 1 ST 3000 Pressure Transmitter Family
Transmitter Type Series 100 Model Series 900 Model
Differential
Pressure
STD1xx
STD9xx
Differential Pressure
with Flange on One
Side
STF1xx
STF9xx
Dual-Head Gauge
Pressure
Not Available
STG9xx
In-Line Gauge
Pressure and
Absolute
STG1xL
STA1xL
STG9xL
STA9xL

1— Introduction - First Time Users Only - ST 3000 Smart Transmitters
ST 3000 HART Transmitter Release 300 User Manual 10/05
6
Transmitter Type Series 100 Model Series 900 Model
Gauge and Absolute
Pressure
STG1xx
STA1xx
STG9xx
STA9xx
Flange-Mount
Liquid Level
STF1xx STF9xx
Differential Pressure
with Remote
Diaphragm Seals
STR1xx STR9xx
Flush Mount
Not Available
STG93P
High Temperature
STG14T
STF14T
Not Available