Emerson Process Management 3144P User Manual
Reference Manual
b
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P Temperature Transmitter
This product is a core
component of the PlantWe
digital plant architecture.
www.rosemount.com
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Rosemount 3144P Temperature
Transmitter
NOTICE
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.
Within the United States, Rosemount Inc. has two toll-free assistance numbers:
Customer Central
Technical support, quoting, and order-related questions.
1-800-999-9307 (7:00 am to 7:00 pm CST)
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours)
International
(952)-906-8888
The products described in this document are NOT designed for nuclear-qualified
applications. Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Emerson
Process Management Sales Representative.
Rosemount 3144P Temperature Transmitter may be protected by one or more U.S. Patents
Pending. Other foreign patents pending.
www.rosemount.com
Reference Manual
00809-0100-4021, Rev DA
November 2004
Table of Contents
Rosemount 3144P
SECTION 1
Introduction
SECTION 2
Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Moist or Corrosive Environments . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Rosemount 3144P and Rosemount 3144 / 3244MV Differences . . . . 1-6
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Setting the Loop to Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Set the Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Typical North American Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Typical European Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
In Conjunction with a Rosemount 333 HART Tri-Loop
(HART / 4–20 mA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Multichannel Installation (HART / 4–20 mA only) . . . . . . . . . . . . . 2-10
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
HART / 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Foundation Fieldbus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Surges/Transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
www.rosemount.com
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
SECTION 3
HART Commissioning
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Updating the HART Communication Software . . . . . . . . . . . . . . . . 3-2
Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Fast Key Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Apply AMS Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Review Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Check Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Device Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Device Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Measurement Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Use with the HART Tri-Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Trim the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Sensor Input Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
Transmitter-Sensor Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
D/A Output Trim or Scaled Output Trim . . . . . . . . . . . . . . . . . . . . 3-33
Output Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Scaled Output Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35
HART / 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38
AMS Software (HART / 4-20 mA only) . . . . . . . . . . . . . . . . . . . . . 3-39
AMS Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41
SECTION 4
Foundation Fieldbus
Configuration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Device Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Node Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Link Active Scheduler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Block Instantiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Foundation fieldbus function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
FEATURES and FEATURES_SEL . . . . . . . . . . . . . . . . . . . . . . . . 4-5
PlantWeb
Recommended Actions for PlantWeb Alerts . . . . . . . . . . . . . . . . . 4-9
Resource Block Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Sensor Transducer Block Diagnostics . . . . . . . . . . . . . . . . . . . . . 4-10
LCD Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Custom Meter Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Self Test Procedure for the LCD . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
LCD Transducer Block Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 4-13
™
Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
TOC-2
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Analog Input (AI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Configure the AI block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Analog Input Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Trim the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Statistical Process Monitoring (SPM) . . . . . . . . . . . . . . . . . . . . . . 4-22
SPM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Troubleshooting Guides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Foundation Fieldbus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
SECTION 5
Maintenance
SECTION 6
Certified Safety
Instrumented System
(SIS)
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Test Terminal (HART / 4–20 mA only) . . . . . . . . . . . . . . . . . . . . . . 5-2
Sensor Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Electronics Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
3144P SIS Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
SIS Additions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Transmitter Diagnostics Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
375 Field communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
3144P SIS Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
3144P SIS Fast Key Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Failure Rate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Product Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
SECTION 7
Prior Use (PU) Safety
Instrumented System
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Safe Failure Fraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Changing Switch Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
TOC-3
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
APPENDIX A
Reference Data
APPENDIX B
Product Certifications
HART and Foundation Fieldbus Specifications . . . . . . . . . . . . . . . . . .A-1
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
HART / 4–20 mA Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6
Foundation Fieldbus Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-10
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14
Rosemount 3144P With HART / 4–20 mA. . . . . . . . . . . . . . . . . . . . . . B-1
Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-1
European Union Directive Information . . . . . . . . . . . . . . . . . . . . . . B-1
Hazardous Locations Installations . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Rosemount 3144P With Foundation fieldbus . . . . . . . . . . . . . . . . . . .B-6
Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-6
European Union Directive Information . . . . . . . . . . . . . . . . . . . . . . B-6
Hazardous Locations Installations . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
TOC-4
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Section 1 Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2
Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-5
Rosemount 3144P and Rosemount 3144 / 3244MV Differences page 1-6
OVERVIEW
Manual This manual is designed to assist in the installation, operation, and
maintenance of the Rosemount 3144P.
Section 1: Introduction
• Transmitter and Manual Overview
• Considerations
• Return of Material
Section 2: Installation
• Mounting
• Installation
• Wiring
• Power Supply
Section 3: HART Configuration
• 375 Field Communicator
• Configuration
• Multidrop Communication
• Calibration
• Trim the transmitter
Section 4: F
• Calibration
• Hardware Maintenance
• Diagnostic Messaging
• Trim the Transmitter
Section 5: Operation and Maintenance
• Maintenance
• Troubleshooting
OUNDATION Fieldbus Configuration
www.rosemount.com
Rosemount 3144P
Appendix A: Specifications and Reference Data
• Specifications
• Dimensional drawings
• Ordering Information
Appendix B: Approvals
• Product Certifications
• Installation Drawings
Safety Instrumented System (SIS) – HART only
• Information regarding Safety Certified transmitters
Transmitter Features of the Rosemount 3144P include:
• Accepts inputs from a wide variety of sensors
• Configuration using HART protocol or F
• Electronics that are completely encapsulated in epoxy and enclosed in
a metal housing, making the transmitter extremely durable and
ensuring long-term reliability
• A compact size and two housing options allowing mounting flexibility for
the control room or the field
• Special dual-sensor features include Hot Backup
first good, differential and average temperature measurements, and
four simultaneous measurement variable outputs in addition to the
analog output signal
Reference Manual
00809-0100-4021, Rev DA
November 2004
OUNDATION fieldbus
®
, sensor drift alarm,
Refer to the following literature for a full range of compatible connection
heads, sensors, and thermowells provided by Emerson Process
Management.
• Temperature Sensors and Assemblies Product Data Sheet, Volume 1
(document number 00813-0100-2654)
• Temperature Sensors and Assemblies Product Data Sheet, Metric
(document number 00813-0200-2654)
CONSIDERATIONS
General Electrical temperature sensors, such as resistance temperature detectors
(RTDs) and thermocouples (T/Cs), produce low-level signals proportional to
temperature. The 3144P transmitter converts low-level signals to HART or
F
OUNDATION fieldbus signals. This signal is then transmitted to the control
room via two power/signal wires.
Electrical Proper electrical installation is essential to prevent errors due to sensor lead
resistance and electrical noise. The current loop must have between 250 and
1100 ohms resistance for HART communications. Refer to Figure 2-10 on
page 2-11 for sensor and current loop connections. F
devices must have proper termination and power conditioning for reliable
operation. Shield cables must be used for F
may only be grounded in one place.
OUNDATION fieldbus and the shield
OUNDATION fieldbus
1-2
Reference Manual
00809-0100-4021, Rev DA
November 2004
Environmental Temperature Effects
The transmitter will operate within specifications for ambient temperatures
between –40 and 185 °F (–40 and 85 °C). Heat from the process is
transferred from the thermowell to the transmitter housing. If the expected
process temperature is near or beyond specification limits, consider the use of
additional thermowell lagging, an extension nipple, or a remote mounting
configuration to isolate the transmitter from the process. Figure 1-1 describes
the relationship between housing temperature rise and extension length.
Rosemount 3144P
Figure 1-1. 3144P Transmitter
Housing Temperature Rise
versus Extension Length for a
Test Installation.
60 (108)
50 (90)
40 (72)
30 (54)
22
Ambient °C (°F)
Housing Temperature Rise, Above
20 (36)
10 (18)
815 °C (1500 °F) Oven Temperature
540 °C (1000 °F)
Oven Temperature
250 °C (482 °F) Oven Temperature
0
3 4 5 6 7 8 9
3.6
Extension Length (in.)
Example:
The maximum permissible housing temperature rise (T) can be calculated
by subtracting the maximum ambient temperature (A) from the
transmitter’s ambient temperature specification limit (S). For instance,
suppose A = 40 °C.
T = S - A
T = 85 °C – 40 °C
T = 45 °C
3044-0123A
Moist or Corrosive
Environments
For a process temperature of 540 °C (1004 °F), an extension length of 3.6
inches (91.4 mm) yields a housing temperature rise (R) of 22 °C (72 °F),
which provides a safety margin of 23 °C (73 °F). A six-inch extension
length (R = 10 °C (50 °F)) would offer a higher safety margin (35 °C (95
°F)) and would reduce temperature-effect errors but would probably
require extra transmitter support. Gauge the requirements for individual
applications along this scale. If a thermowell with lagging is used, the
extension length may be reduced by the length of the lagging.
The 3144P temperature transmitter has a highly reliable dual compartment
housing designed to resist moisture and corrosion. The sealed electronics
module is mounted in a compartment that is isolated from the terminal side
conduit entries. O-ring seals protect the interior when the covers are properly
installed. In humid environments, however, it is possible for moisture to
accumulate in conduit lines and drain into the housing.
1-3
Reference Manual
00809-0100-4021, Rev DA
Rosemount 3144P
NOTE
Each transmitter is marked with a tag indicating the approvals. Install the
transmitter in accordance with all applicable installation codes and approval
and installation drawings (see Appendix B: Product Certifications). Verify that
the operating atmosphere of the transmitter is consistent with the hazardous
locations certifications. Once a device labeled with multiple approval types is
installed, it should not be reinstalled using any of the other labeled approval
types. To ensure this, the approval label should be permanently marked to
distinguish the used from the unused approval type(s).
November 2004
Mounting Take into account the need for access to the transmitter when choosing an
installation location and position.
Terminal Side of Electronics Housing
Mount the transmitter so the terminal side is accessible. Allow adequate
clearance for cover removal. Make wiring connections through the conduit
openings on the bottom of the housing.
Circuit Side of Electronics Housing
Mount the transmitter so the circuit side is accessible. Provide adequate
clearance for cover removal. Additional room is required for LCD installation.
The transmitter may be mounted directly to or remotely from the sensor.
Using optional mounting brackets, the transmitter may be mounted to a flat
surface or to a two-inch diameter pipe (see “Optional Transmitter Mounting
Brackets” on page A-8).
Software Compatibility Replacement transmitters may contain revised software that is not fully
compatible with the existing software. The 375 Field Communicator and AMS
software containing device descriptors for the 3144 and 3244MV before
December 2001 do not fully support the new features of the 3144P. The
Device Descriptors (DD) are available with new communicators or can be
loaded into existing communicators at any Emerson Process Management
Service Center.
1-4
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
RETURN OF MATERIALS To expedite the return process in North America, call the Emerson Process
Management National Response Center (800-654-7768). This center, will
assist you with any needed information or materials.
The center will ask for the following information:
• Product model
• Serial numbers
• The last process material to which the product was exposed
The center will provide
• A Return Material Authorization (RMA) number
• Instructions and procedures that are necessary to return goods that
were exposed to hazardous substances
For other locations, contact a Emerson Process Management representative.
NOTE
If a hazardous substance is identified, a Material Safety Data Sheet (MSDS),
required by law to be available to people exposed to specific hazardous
substances, must be included with the returned materials.
1-5
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
ROSEMOUNT 3144P
AND ROSEMOUNT 3144 /
3244MV DIFFERENCES
The following table identifies the differences between the Rosemount 3144P
and Rosemount 3144 and 3244MV Temperature Transmitters.
Improved Rosemount 3144P Previous Rosemount 3144 and 3244MV
Field Device Revision number 3 Standard 3144P: Dev v3, DD v2
Software Revision number 3 Software Revision number 1
Added sensor input types: DIN Type L, DIN
Type U, and extended temperature range of
Type N
Uses custom-configurable alarm limits Analog output and alarm levels can be ordered
Improved 2- and 3-wire EMF compensation NA
First Good Temperature is available as a
device variable
2-wire fixed lead correction is available NA
Enhanced EMI rejection and filtering resulting
in unmatched stability in process measurement
Dual-sensor configuration is field selectable Rosemount 3144 – single sensor
3144P SIS: Dev v1, DD v1 (for SIS)
NA
to be NAMUR-compliant with option codes A1
and CN
NA
NA
Rosemount 3244MV – dual-sensor configuration
1-6
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Section 2 Installation
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-10
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-14
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
potentially raises safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Explosions could result in death or serious injury:
• Do not remove the transmitter cover in explosive atmospheres when the circuit
is live.
• Before connecting a 375 Field Communicator in an explosive atmosphere, make
sure the instruments in the loop are installed in accordance with intrinsically safe
or non-incendive field wiring practices.
• Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
• Both transmitter covers must be fully engaged to meet explosion-proof
requirements.
Failure to follow these installation guidelines could result in death or serious injury:
• Make sure only qualified personnel perform the installation.
Process leaks could result in death or serious injury:
• Install and tighten thermowells or sensors before applying pressure, or process
leakage may result.
• Do not remove the thermowell while in operation. Removing while in operation
may cause process fluid leaks.
Electrical shock could cause death or serious injury. If the sensor is installed in a
high-voltage environment and a fault or installation error occurs, high voltage may be
present on the transmitter leads and terminals:
• Use extreme caution when making contact with the leads and terminals.
www.rosemount.com
Reference Manual
00809-0100-4021, Rev DA
Rosemount 3144P
November 2004
COMMISSIONING The 3144P must be configured for certain basic variables to operate. In many
cases, all of these variables are pre-configured at the factory. Configuration
may be required if the configuration variables need to be changed.
Commissioning consists of testing the transmitter and verifying transmitter
configuration data. Rosemount 3144P transmitters can be commissioned
either before or after installation. Commissioning the transmitter on the bench
before installation using a 375 Field Communicator or AMS ensures that all
transmitter components are in working order.
For more information on using the Field Communicator with the 3144P
transmitter, see “HART Commissioning” on page 3-1. For more information on
using the 3144 with Foundation fieldbus, see “Foundation Fieldbus
Configuration” on page 4-1.
Figure 2-1. Installation
Flowchart.
START
HERE
Bench
Calibration?
Yes
BASIC SETUP
No
VERIFY
FIELD INSTALL
Setting the Loop to
Manual
Set Units
Set Range
Values - HART
Set Sensor
Typ es
Set Number
of Wires
Set Damping
Simulate
Sensor Input
Within
Specifications?
No
Refer to
Section 1:
Maintenance
Yes
Set Jumpers or
Switches
Mount the
Transmitter
Wire the
Transmitter
Power the
Transmitter
Check for
Process Leaks
Done
When sending or requesting data that would disrupt the loop or change the
output of the transmitter, set the process application loop to manual. The 375
Field Communicator or AMS will prompt you to set the loop to manual when
necessary. Acknowledging this prompt does not set the loop to manual. The
prompt is only a reminder; set the loop to manual as a separate operation.
2-2
Reference Manual
00809-0100-4021, Rev DA
November 2004
Set the Switches HART
Without a LCD display
1. If the transmitter is installed in a loop, set the loop to manual mode and
2. Remove the housing cover on the electronics side of the transmitter.
3. Set the switches to the desired position (see Figure 2-1).
4. Replace the transmitter cover. Both transmitter covers must be fully
5. Apply power and set the loop to automatic mode.
With a LCD display
1. If the transmitter is installed in a loop, set the loop to manual mode and
2. Remove the housing cover on the electronics side of the transmitter.
3. Remove the housing cover, unscrew the LCD display screws and
4. Set the switches to the desired position (see Figure 2-1).
5. Gently slide the LCD display back into place, taking extra precautions
6. Secure the LCD display by replacing the LCD display screws.
7. Replace the transmitter cover. Both transmitter covers must be fully
8. Apply power and set the loop to automatic mode.
Rosemount 3144P
disconnect power.
Do not remove the transmitter cover in explosive atmospheres when
the circuit is live.
engaged to meet explosion-proof requirements.
disconnect power.
Do not remove the transmitter cover in explosive atmospheres when
the circuit is live.
gently slide the meter straight off.
of the 10 pin connection.
engaged to meet explosion-proof requirements.
Foundation Fieldbus
Without a LCD Display
1. If the transmitter is installed in a loop, set the loop to Out-of-Service
(OOS) mode (if applicable) and disconnect the power.
2. Remove the electronics housing cover.
3. Set the switches to the desired position. Reattach housing cover.
4. Apply power and set the loop to In-Service mode.
With a LCD Display
1. If the transmitter is installed in a loop, set the loop to Out-of-Service
(OOS) (if applicable) and disconnect the power.
2. Remove the electronics housing cover.
3. Unscrew the LCD display screws and pull the meter straight off.
4. Set the switches to the desired position.
5. Reattach the LCD display and electronics housing cover (consider LCD
display orientation).
6. Apply power and set the loop to In-Service mode.
2-3
Rosemount 3144P
Table 2-1. Transmitter Switch
Locations.
Reference Manual
00809-0100-4021, Rev DA
November 2004
Switch Location
Switches
Write Protect Switch (HART and F
(1)
4.4 in. (112 mm)
(1) Alarm and Write Protect (HART),
Simulate and Write Protect (F
OUNDATION Fieldbus)
OUNDATION Fieldbus)
4.4 in. (112 mm)
LCD
Connector
The transmitter is equipped with a write-protect switch that can be positioned
to prevent the accidental or deliberate change of configuration data.
Alarm Switch (HART)
The transmitter monitors itself during normal operation with an automatic
diagnostic routine. If the diagnostic routine detects a sensor failure or a failure
in the transmitter electronics, the transmitter goes into alarm (high or low,
depending on the position of the failure mode switch).
The analog alarm and saturation values that the transmitter uses depend on
whether it is configured to standard or NAMUR-compliant operation. These
values are also custom-configurable in both the factory and the field using the
HART Communications. The limits are
•21.0 ≤ I ≤ 23 for high alarm
• 3.5 ≤ I ≤ 3.75 for low alarm
Table 2-2. Values for standard
and NAMUR operation
Standard Operation (factory default) NAMUR-Compliant Operation
Fail High 21.75 mA ≤ I ≤ 23.0 mA Fail High 21 mA ≤ I ≤ 23.0 mA
High Saturation I ≥ 20.5 mA High Saturation I ≥ 20.5 mA
Low Saturation I ≤ 3.90 mA Low Saturation I ≤ 3.8 mA
Fail Low I ≤ 3.75 mA Fail Low I ≤ 3.6 mA
Simulate Switch (F
OUNDATION Fieldbus)
Simulate switch is used to replaces the channel value coming from the
Sensor Transducer Block. For testing purposes, it manually simulates the
output of the Analog Input Block to a desired value.
MOUNTING If possible, mount the transmitter at a high point in the conduit run so moisture
from the conduits will not drain into the housing. The terminal compartment
could fill with water If the transmitter is mounted at a low point in the conduit
run. In some instances, the installation of a poured conduit seal, such as the
one pictured in Figure 2-3, is advisable. Remove the terminal compartment
cover periodically and inspect the transmitter for moisture and corrosion.
2-4
Reference Manual
00809-0100-4021, Rev DA
November 2004
Figure 2-2. Incorrect Conduit
Installation
Conduit
Lines
Rosemount 3144P
Conduit
Lines
3144-0429A, 0429B
Figure 2-3. Recommended
Mounting with Drain Seal
Sealing
Compound
Union Coupling with Extension
Thermowell
Sensor Hex
Poured Conduit Seal (Where Required)
Conduit for
Field Wiring
If mounting the transmitter directly to the sensor assembly, use the process
shown in Figure 2-4. If mounting the transmitter apart from the sensor
assembly, use conduit between the sensor and transmitter. The transmitter
1
accepts male conduit fittings with
1
(PG 11), or JIS G
/2 threads (M20 × 1.5 (CM 20), PG 13.5 (PG 11), or JIS G1/2
/2–14 NPT, M20 × 1.5 (CM 20), PG 13.5
threads are provided by an adapter). Make sure only qualified personnel
perform the installation.
The transmitter may require supplementary support under high-vibration
conditions, particularly if used with extensive thermowell lagging or long
extension fittings. Pipe-stand mounting, using one of the optional mounting
brackets, is recommended for use in high-vibration conditions.
3144-0430B
2-5
Rosemount 3144P
INSTALLATION
Reference Manual
00809-0100-4021, Rev DA
November 2004
Typical North American
Installation
Figure 2-4. Typical North
American Mounting
Configuration.
1. Attach the thermowell to the pipe or process container wall. Install and
tighten thermowells and sensors. Apply process pressure to perform a
leak test.
2. Attach necessary unions, couplings, and extension fittings. Seal the
fitting threads with teflon
®
(PTFE) tape (if required).
3. Screw the sensor into the thermowell or directly into the process
(depending on installation requirements).
4. Verify all sealing requirements for severe environments or to satisfy code
requirements.
5. Attach the transmitter to the thermowell/sensor assembly. Seal all
threads with Teflon (PTFE) tape (if required).
6. Pull sensor leads through the extensions, unions, or couplings into the
terminal side of the transmitter housing.
7. Install field wiring conduit to the remaining transmitter conduit entry.
8. Pull the field wiring leads into the terminal side of the transmitter housing.
9. Attach the sensor leads to the transmitter sensor terminals. Attach the
power leads to the transmitter power terminals.
10. Attach and tighten both transmitter covers. Both transmitter covers must
be fully engaged to meet explosion-proof requirements.
Union or
Thermowell
Extension
Coupling
2-6
Conduit for Field
Extension
NOTE: Dimensions are in inches (millimeters).
Fitting
Length
3.2
(81)
Wiring (dc power)
NOTE
The National Electrical Code requires that a barrier or seal be used in addition
to the primary (sensor) seal to prevent process fluid from entering the
electrical conduit and continuing to the control room. Professional safety
assistance is recommended for installation in potentially hazardous
processes.
3144-0433B
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Typical European
Installation
Figure 2-5. Typical European
Process Mounting
Configuration.
1. Mount the thermowell to the pipe or the process container wall. Install
and tighten thermowells and sensors. Apply pressure and perform a leak
check before starting the process.
2. Attach a connection head to the thermowell.
3. Insert the sensor into the thermowell and wire it to the connection head.
The wiring diagram is located on the inside of the connection head.
4. Mount the transmitter to a 2-inch (50 mm) pipe or a suitable panel using
one of the optional mounting brackets. The B4 bracket is shown in
Figure 2-5.
5. Attach cable glands to the shielded cable running from the connection
head to the transmitter conduit entry.
6. Run the shielded cable from the opposite conduit entry on the transmitter
back to the control room.
7. Insert the shielded cable leads through the cable entries into the
connection head and the transmitter. Connect and tighten the cable
glands.
8. Connect the shielded cable leads to the connection head terminals
(located inside of the connection head) and the sensor wiring terminals
(located inside of the transmitter housing). Avoid contact with the leads
and the terminals.
2-inch
Cable
Gland
Pipe
B4
Mounting
Bracket
Shielded Cable from
Sensor to Transmitter
Shielded Cable
from Transmitter
to Control Room
644-0000B05B
2-7
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
In Conjunction with a
Rosemount 333 HART
Tri-Loop (HART / 4–20
mA only)
Figure 2-6. HART Tri-Loop
Installation Flowchart
(1)
START
HERE
Use the dual-sensor option 3144P transmitter that is operating with two
sensors in conjunction with a 333 HART Tri-Loop
®
HART-to-Analog Signal
Converter to acquire an independent 4–20 mA analog output signal for each
sensor input. The 3144P transmitter can be configured to output four of the six
following digital process variables:
•Sensor 1
•Sensor 2
• Differential temperature
• Average temperature
• First good temperature,
• Transmitter terminal temperature.
The HART Tri-Loop reads the digital signal and outputs any or all of these
variables into as many as three separate 4–20 mA analog channels.
Refer to Figure 2-6 for basic installation information. Refer to the 333 HART
Tri-Loop HART-to-Analog Signal Converter Reference Manual (document
number 00809-0100-4754) for complete installation information.
INSTALL THE
TRI-LOOP
COMMISSION
THE TRI-LOOP
Install the
3144P
No
Unpack the
Tri-Loop
Review the
Tri-Loop
Reference
Manual
3144P
Installed?
Yes
Set the 3144P
Burst
Command
Order
Set the 3144P
to Burst HART
Command 3
Review
Tri-Loop
Installation
Considerations
Mount the
Tri-Loop to a
DIN Rail
Run Wires from
3144P to Burst
Input Terminals
Install Channel
1 Wires from
Tri-Loop to
Control Room
OPTIONAL:
Install Channel
2 Wires from
Tri-Loop to
Control Room
OPTIONAL:
Install Channel
3 Wires from
Tri-Loop to
Control Room
Configure the
Tri-Loop to
Receive 3144P
Burst
Commands
Pass System
Tes t?
Yes
DONE
No
Refer to the
HART Tri-Loop
Reference
Manual
(1) See “Use with the HART Tri-Loop” on page 3-24 for configuration information.
2-8
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
LCD Display Transmitters ordered with the LCD display option (code M5) are shipped with
the LCD display installed. After-market installation of the LCD display on a
conventional 3144P transmitter requires a small instrument screwdriver and
the LCD display kit, which includes:
• LCD display assembly
• Extended cover with cover O-ring in place
• Captive screws (quantity 2)
• 10-pin interconnection header
Use the following procedure to install the LCD display. Once the LCD display
is installed, configure the transmitter to recognize the meter option. Refer to
“LCD Meter Options” on page 3-19 (HART) or “LCD Transducer Block” on
page 4-11 (F
1. If the transmitter is installed in a loop, set the loop to manual (HART) /
out-of-service (F
2. Remove the housing cover from the electronics side of the transmitter.
Do not remove the transmitter covers in explosive atmospheres if the
circuit is live.
3. Ensure that the transmitter write protect switch is set to the Off position.
If transmitter security is On, then you will not be able to configure the
transmitter to recognize the LCD display. If security On is desired, first
configure the transmitter for the LCD display and then install the meter.
4. Insert the interconnection header in the 10-pin socket on the face of the
electronics module. Insert the pins into the electronics LCD interface.
5. Orient the meter. The meter can be rotated in 90-degree increments for
easy viewing. Position one of the four 10-pin sockets on the back of the
meter to accept the interconnection header.
6. Attach the LCD display assembly to the interconnection pins. Thread and
tighten the LCD display screws into the holes on the electronics module.
7. Attach the extended cover; tighten at least one-third turn after the O-ring
contacts the transmitter housing. Both transmitter covers must be fully
engaged to meet explosion proof requirements.
8. Apply power and set the loop to automatic (HART) / in-service
(F
OUNDATION fieldbus).
OUNDATION Fieldbus) mode and disconnect the power.
OUNDATION Fieldbus) mode.
NOTE
Observe the following LCD display temperature limits:
Operating:–4 to 185 °F (–20 to 85 °C)
Storage:–50 to 185 °F (–45 to 85 °C)
2-9
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
Multichannel Installation
(HART / 4–20 mA only)
You can connect several transmitters to a single master power supply (see
Figure 2-7). In this case, the system may be grounded only at the negative
power supply terminal. In multichannel installations where several
transmitters depend on one power supply and the loss of all transmitters
would cause operational problems, consider an uninterrupted power supply or
a back-up battery. The diodes shown in Figure 2-7 prevent unwanted
charging or discharging of the back-up battery.
Figure 2-7. Multichannel
Installations.
Transmitter
No. 1
Transmitter
No. 2
Between 250 and 1100 Ω
If No Load Resistor
WIRING
HART / 4–20 mA Field Wiring
All power to the transmitter is supplied over the signal wiring. Signal wiring
does not need to be shielded, but twisted pairs should be used for the best
results. Do not run unshielded signal wiring in conduit or open trays with
power wiring or near heavy electrical equipment. High voltage may be present
on the leads and may cause electrical shock. To wire the transmitter for
power, follow the steps below.
R
Lead
R
R
Lead
Lead
Readout or
Controller No. 1
Readout or
Controller No. 2
Battery
Backup
To Additional
Transmitters
dc
Power
Supply
3044-0131A
1. Remove the transmitter covers. Do not remove the transmitter covers in
an explosive atmosphere when the circuit is live.
2. Connect the positive power lead to the terminal marked “+” and the
negative power lead to the terminal marked “–” as shown in Figure 2-8.
Crimped lugs are recommended when wiring to screw terminals.
3. Tighten the terminal screws to ensure that good contact is made. No
additional power wiring is required.
4. Replace the transmitter covers. Both transmitter covers must be fully
engaged to meet explosion-proof requirements.
NOTE
Do not apply high voltage (e.g., ac line voltage) to the transmitter terminals.
Abnormally high voltage can damage the unit.
2-10
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
Figure 2-8. Transmitter Terminal
Block
Figure 2-9. HART / 4–20 mA
Wiring Diagram
2-wire RTD
and Ohms
W
R
∆T/Hot Backup/Dual
Sensor with
2 RTDs
W & G
***
**
3-wire RTD
and Ohms**
G
B
Thermocouples
“+”
Tes t
3144P Single-Sensor Connections Diagram
4-wire RTD
and Ohms
3144P Dual-Sensor Connections Diagram
∆T/Hot
Backup/Dual
Sensor with 2
∆T/Hot
Backup/Dual
Sensor with
RTDs/
Thermocouples
Sensor with RTDs/
**
Sensor Terminals (1 – 5)
Ground
T/Cs and
Millivolts
Backup/Dual
Thermocouples
Compensation Loop*
∆T/Hot
RTD with
∆T/Hot Backup/Dual
Sensor with 2 RTDs
with Compensation
** **
Loop
* Transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop.
** Emerson Process Management provides 4-wire sensors for all single-element RTDs. You can use these RTDs in 3-wire configurations by
leaving the unneeded leads disconnected and insulated with electrical tape.
*** Typical wiring configuration of a Rosemount dual-element RTD is shown (R=Red, W=White, G=Green, B=Black)
2-11
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
Power/Current Loop Connections
Use copper wire of a sufficient size to ensure that the voltage across the
transmitter power terminals does not go below 12.0 V dc.
1. Connect the current signal leads as shown in Figure 2-10.
2. Recheck the polarity and correctness of connections.
3. Turn the power ON.
For information about multichannel installations, refer to page 2-17.
NOTE
Do not connect the power/signal wiring to the test terminal. The voltage
present on the power/signal leads may burn out the reverse-polarity
protection diode that is built into the test terminal. If the test terminal’s reverse
polarity protection diode is burned out by the incorrect power/signal wiring, the
transmitter can still be operated by jumping the current from the test terminal
to the “–” terminal. See “Test Terminal” on page 4-3 for use of the terminal.
Figure 2-10. m Connecting
a Communicator to a
Transmitter Loop (HART/ 4–20
mA).
Power/Signal Terminals
The signal wire may be grounded at
any point or left ungrounded.
250 ≤ R
or*
AMS software or a 375 Field Communicator can be connected at any termination
point in the signal loop. The signal loop must have between 250 and 1100 ohms
load for communications.
≤ 1100
L
Power
Supply
3144-0000A04A
2-12
Reference Manual
00809-0100-4021, Rev DA
November 2004
FOUNDATION Fieldbus
Rosemount 3144P
Figure 2-11. Transmitter
Terminal Block
Figure 2-12. F
OUNDATION
Fieldbus Field Wiring Diagram
2-wire RTD
and Ohms
W
R
W & G
G
B
Power Terminals
3144P Single-Sensor Connections Diagram
3-wire RTD
and Ohms**
3144P Dual-Sensor Connections Diagram
4-wire RTD
and Ohms
T/Cs and
Millivolts
Sensor Terminals (1 – 5)
Ground
RTD with
Compensation Loop*
∆T/Hot
Backup/Dual
Sensor with 2
RTDs
* Transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop.
** Emerson Process Management provides 4-wire sensors for all single-element RTDs. You can use these RTDs in 3-wire configurations by leaving
the unneeded leads disconnected and insulated with electrical tape.
*** Typical wiring configuration of a Rosemount dual-element RTD is shown (R=Red, W=White, G=Green, B=Black)
∆T/Hot Backup/Dual
Sensor with 2
Thermocouples
**
***
∆T/Hot
Backup/Dual
Sensor with RTDs/
Thermocouples
**
∆T/Hot
Backup/Dual
Sensor with RTDs/
Thermocouples
∆T/Hot Backup/Dual
Sensor with 2 RTDs
with Compensation
**
Loop
**
2-13
Reference Manual
00809-0100-4021, Rev DA
Rosemount 3144P
November 2004
Sensor Connections Figure 2-9 on page 2-11 (HART) and Figure 2-12 on page 2-13 (FOUNDATION
fieldbus) shows the correct sensor wiring connections to the transmitter
sensor terminals. To ensure an adequate sensor connection, anchor the
sensor lead wires beneath the flat washer on the terminal screw. Do not
remove the transmitter cover in explosive atmospheres if the circuit is live.
Both transmitter covers must be fully engaged to meet explosion-proof
requirements. Use extreme caution when making contact with the leads and
terminals.
RTD or Ohm Inputs
If the transmitter is mounted remotely from a 3- or 4-wire RTD, it will operate
within specifications, without recalibration, for lead wire resistances of up to
10 ohms per lead (equivalent to 1,000 feet of 20 AWG wire). In this case, the
leads between the RTD and transmitter should be shielded. If using only two
leads (or a compensation loop lead wire configuration), both RTD leads are in
series with the sensor element, so significant errors can occur if the lead
lengths exceed one foot of 20 AWG wire. For longer runs, attach a third or
fourth lead as described above. To eliminate 2-wire lead resistance error, the
2-wire offset command can be used. This allows the user to input the
measured lead wire resistance, resulting in the transmitter adjusting the
temperature to correct the error.
Thermocouple or Millivolt Inputs
For direct-mount applications, connect the thermocouple directly to the
transmitter. If mounting the transmitter remotely from the sensor, use
appropriate thermocouple extension wire. Make connections for millivolt
inputs with copper wire. Use shielding for long runs of wire.
NOTE
For HART transmitters, the use of two grounded thermocouples with a dual
option 3144P transmitter is not recommended. For applications in which the
use of two thermocouples is desired, connect either two ungrounded
thermocouples, one grounded and one ungrounded thermocouple, or one
dual element thermocouple.
POWER SUPPLY HART
An external power supply is required to operate the 3144P (not included). The
input voltage range of the transmitter is 12 to 42.4 V DC. This is the power
required across the transmitter power terminals. The power terminals are
rated to 42.4 V DC. With 250 ohms of resistance in the loop, the transmitter
will require a minimum of 18.1 V DC for communication.
The power supplied to the transmitter is determined by the total loop
resistance and should not drop below the lift-off voltage. The lift-off voltage is
the minimum supply voltage required for any given total loop resistance. See
Figure 2-13 to determine the required supply voltage. If the power drops
below the lift-off voltage while the transmitter is being configured, the
transmitter may output incorrect information.
2-14
The dc power supply should provide power with less than 2% ripple. The total
resistance load is the sum of the resistance of the signal leads and the load
resistance of any controller, indicator, or related piece of equipment in the
loop. Note that the resistance of intrinsic safety barriers, if used, must be
included.
Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
NOTE
Do not allow the voltage to drop below 12.0 V dc at the transmitter terminals
when changing transmitter configuration parameters, or permanent damage
to the transmitter could result.
Figure 2-13. Load Limits.
Maximum Load = 40.8 X (Supply Voltage - 12.0)
4–20 mA dc
Operating
Region
20 30 40 42.4
12.0
Supply Voltage (V dc)
F
OUNDATION fieldbus
Powered over F
OUNDATION fieldbus with standard fieldbus power supplies.
1240
1100
1000
750
500
Load (Ohms)
250
0
10
The transmitter operates between 9.0 and 32.0 V dc, 11 mA maximum.
Transmitter power terminals are rated to 42.4 VDC.
The power terminals on the 3144P with F
OUNDATION fieldbus are polarity
insensitive.
Surges/Transients The transmitter will withstand electrical transients of the energy level usually
encountered in static discharges or induced switching. However, high-energy
transients, such as those induced in wiring from nearby lightning strikes, can
damage both the transmitter and the sensor.
To protect against high-energy transients, install the integral transient
protection board (option code T1). The integral transient protection board is
available as an ordered option or as an accessory. Refer to “ Transient
Protection (Option Code T1)” on page A-16 for more information.
Grounding Sensor Shielding
The currents in the leads induced by electromagnetic interference can be
reduced by shielding. Shielding carries the current to ground and away from
the leads and electronics. If the ends of the shields are adequately grounded,
little current will actually enter the transmitter.
If the ends of the shield are left ungrounded, a voltage is created between the
shield and the transmitter housing and also between the shield and earth at
the element end. The transmitter may not be able to compensate for this
voltage, causing it to lose communication and/or go into alarm. Instead of the
shield carrying the currents away from the transmitter, the currents will now
flow through the sensor leads into the transmitter circuitry where they will
interfere with the circuit operation.
2-15
Rosemount 3144P
Reference Manual
00809-0100-4021, Rev DA
November 2004
Shielding Recommendations
The following are recommended practices are from API Standard 552
(Transmission Standard) section 20.7 and from field and laboratory testing. If
more than one recommendation is given for a sensor type, start with the first
technique shown or the technique that is recommended for the facility by its
installation drawings. If the technique does not eliminate the transmitter
alarms, try another technique. If all techniques unsuccessfully prevent
transmitter alarms due to high EMI, contact a Emerson Process Management
representative.
Ungrounded Thermocouple, mV, and RTD/Ohm Inputs
Option 1: recommended for ungrounded transmitter housing
1. Connect the signal wiring shield to the sensor wiring shield.
2. Ensure the two shields are tied together and electrically isolated from
the transmitter housing.
3. Ground the shield at the power supply end only.
4. Ensure the shield at the sensor is electrically isolated from the
surrounding fixtures that may be grounded.
Sensor Wires
Shield ground point
Connect shields together, electrically isolated from the transmitter
Option 2: recommended for grounded transmitter housing
1. Connect the sensor wiring shield to the transmitter housing, provided
the transmitter housing is grounded (see "Transmitter Housing").
2. Ensure the shield at the sensor end is electrically isolated from
surrounding fixtures that may be grounded.
3. Ground the signal wiring shield at the power supply end.
Sensor Wires
Shield ground points
2-16
Loading...