Rosemount™ 3051P In-Line Pressure
Transmitter
with HART® Protocol
Reference Manual
00809-0700-4001, Rev AC
April 2020
2
Reference Manual Contents
00809-0700-4001 April 2020
Contents
Chapter 1 Introduction.............................................................................................................. 5
1.1 Using this manual........................................................................................................................ 5
1.2 Models covered........................................................................................................................... 5
1.3 Product recycling/disposal...........................................................................................................5
Chapter 2 Configuration............................................................................................................ 7
2.1 Safety messages.......................................................................................................................... 7
2.2 System readiness.........................................................................................................................8
2.3 HART® installation flowchart......................................................................................................10
2.4 Transmitter overview.................................................................................................................11
2.5 Configuration overview............................................................................................................. 14
2.6 Configuration basics.................................................................................................................. 14
2.7 Verifying configuration..............................................................................................................17
2.8 Basic setup of the transmitter.................................................................................................... 19
2.9 Configuring the LCD display.......................................................................................................24
2.10 Detailed transmitter setup.......................................................................................................25
2.11 Performing transmitter tests................................................................................................... 30
2.12 Configuring burst mode...........................................................................................................32
2.13 Establishing multidrop communication................................................................................... 34
Chapter 3 Hardware installation.............................................................................................. 37
3.1 Overview................................................................................................................................... 37
3.2 Safety messages........................................................................................................................ 37
3.3 Considerations...........................................................................................................................38
3.4 Installation procedures.............................................................................................................. 39
3.5 Rosemount 306 Manifold.......................................................................................................... 48
Chapter 4 Electrical installation................................................................................................49
4.1 Overview................................................................................................................................... 49
4.2 Safety messages........................................................................................................................ 49
4.3 Local Operating Interface (LOI)/LCD display...............................................................................50
4.4 Configuring transmitter security................................................................................................52
4.5 Set transmitter alarm.................................................................................................................55
4.6 Electrical considerations............................................................................................................ 55
Chapter 5 Operation and maintenance.....................................................................................63
5.1 Overview................................................................................................................................... 63
5.2 Safety messages........................................................................................................................ 63
5.3 Recommended calibration tasks................................................................................................64
5.4 Calibration overview..................................................................................................................65
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5.5 Trimming the pressure signal.....................................................................................................68
5.6 Trimming the analog output......................................................................................................72
5.7 Switching HART® revision.......................................................................................................... 75
Chapter 6 Troubleshooting...................................................................................................... 77
6.1 Overview................................................................................................................................... 77
6.2 Safety messages........................................................................................................................ 77
6.3 Troubleshooting for 4-20 mA output......................................................................................... 78
6.4 Diagnostic messages................................................................................................................. 80
6.5 Disassembly procedures............................................................................................................ 86
6.6 Reassembly procedures.............................................................................................................88
6.7 Service support..........................................................................................................................88
Chapter 7 Safety instrumented systems requirements............................................................. 91
7.1 Safety instrumented systems (SIS) certification......................................................................... 91
7.2 Safety certified identification.....................................................................................................91
7.3 Installation in safety instrumented systems (SIS) applications....................................................91
7.4 Configuring in safety instrumented systems (SIS) applications...................................................92
7.5 Safety instrumented systems (SIS) operation and maintenance.................................................93
7.6 Inspection..................................................................................................................................95
Appendix A Reference data......................................................................................................... 97
A.1 Product certifications and installation drawings.........................................................................97
A.2 Ordering information, specifications, and dimensional drawings...............................................97
Appendix B Field Communicator menu trees and Fast Keys......................................................... 99
B.1 Menu trees................................................................................................................................ 99
B.2 Fast Keys..................................................................................................................................103
Appendix C Local operator interface (LOI)................................................................................. 105
C.1 Local operator interface (LOI) menu tree................................................................................. 105
C.2 Local operator interface (LOI) menu tree - extended menu......................................................106
C.3 Entering numbers....................................................................................................................107
C.4 Entering text............................................................................................................................108
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Introduction
1 Introduction
1.1 Using this manual
The sections in this manual provide information on installing, operating, and maintaining
the Rosemount 3051P. The sections are organized as follows:
Configuration provides instruction on commissioning and operating Rosemount 3051P
Transmitters. It also includes information on software functions, configuration
parameters, and online variables.
Hardware installation contains mechanical installation instructions and field upgrade
options.
Electrical installation contains electrical installation instructions, and field upgrade
options.
Operation and maintenance provides detailed information on calibrating and changing
HART® Revisions.
Troubleshooting provides troubleshooting techniques for the most common operating
problems.
Safety instrumented systems requirements provides identification, installation,
configuration, operation and maintenance, and inspection information for Safety
Instrumented Systems.
Specifications and reference data provides information on how to access reference and
specification data, as well as ordering information.
Field Communicator menu trees and Fast Keys provides the menu trees and HART Fast
Keys used to operate the transmitter.
Local operator interface (LOI) provides menu trees and instructions on using the LOI.
1.2 Models covered
The following Rosemount Pressure Transmitters are covered by this manual:
• Rosemount 3051P In-Line Gage Pressure Transmitter: Measures gage pressure up to
4,000 psig (275.8 BarG).
• Rosemount 3051P In-Line Absolute Pressure Transmitter: Measures absolute pressure
up to 4,000 psig (275.8 BarG).
1.3 Product recycling/disposal
Consider recycling equipment and packaging. Dispose of the product and packaging in
accordance with local and national legislation.
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2 Configuration
2.1 Safety messages
Procedures and instructions in this section may require special precautions to ensure the
safety of the personnel performing the operations.
WARNING
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with
the appropriate local, national, and international standards, codes, and practices.
Review the Product Certifications section of the Rosemount 3051P Product Data Sheet
for any restrictions associated with a safe installation.
Before connecting a handheld communicator in an explosive atmosphere, ensure that
the instruments in the loop are installed in accordance with intrinsically safe or nonincendive field wiring practices.
In an explosion-proof/flameproof installation, do not remove the transmitter covers
when power is applied to the unit.
WARNING
Electrical shock could cause death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock.
WARNING
Process leaks could result in death or serious injury.
Install and tighten all four flange bolts before applying pressure.
Do not attempt to loosen or remove flange bolts while the transmitter is in service.
WARNING
Replacement equipment or spare parts not approved by Emerson for use as spare parts
could reduce the pressure retaining capabilities of the transmitter and may render the
instrument dangerous.
Use only bolts supplied or sold by Emerson as spare parts. Improper assembly of manifolds
to traditional flange can damage sensor module.
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WARNING
Improper assembly of manifolds to traditional flange can damage the device.
For safe assembly of manifold to traditional flange, bolts must break back plane of flange
web (i.e., bolt hole) but must not contact sensor module housing.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users’ equipment. This could be intentional or unintentional and
needs to be protected against.
Physical security is an important part of any security program and fundamental to
protecting your system. Restrict physical access by unauthorized personnel to protect end
users’ assets. This is true for all systems used within the facility.
2.2 System readiness
• If using HART® based control or asset management systems, confirm the HART
capability of such systems prior to commissioning and installation. Not all systems are
capable of communicating with HART Revision 7 devices.
• For instructions on how to change the HART revision of your transmitter, see Switching
HART® revision.
2.2.1
Table 2-1: Device Revisions and Files
Identify device Find device driver
Software
release
date
NAMUR
hardware
revision
Confirm correct device driver
Procedure
1. Verify the latest Device Driver (DD/DTM™) is loaded on your systems to ensure
proper communications.
2. Reference Emerson.com or FieldCommGroup.org for the latest DD.
3. Select desired product and download the DD.
a) Reference Table 2-1 for the correct DD.
files
®
HART
software
revision
(2)
HART
universal
revision
Device
revision
(1)
NAMUR
software
revision
(1)
Review instructions Review
Manual document
(3)
number
functionality
Changes to software
August
2016
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1.1.xx 1.0.xx 03 7 10 00809-0700-4001 • HART Revision 5
and 7 selectable
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Table 2-1: Device Revisions and Files (continued)
Identify device Find device driver
files
5 9 • Local operator
(1) NAMUR revision is located on the hardware tag of the device. Differences in level 3 changes, signified above by xx,
represent minor product changes as defined per NE53. Compatibility and functionality are preserved, and products can
be used interchangeably.
(2) HART software revision can be read using a HART capable configuration tool. Value shown is minimum revision that
could correspond to NAMUR revisions.
(3) Device driver file names use device and DD revision, e.g., 10_01. HART Protocol is designed to enable legacy device
driver revisions to continue to communicate with new HART devices. To access new functionality, the new device driver
must be downloaded. Emerson recommends downloading new device driver files to ensure full functionality.
Review instructions Review
functionality
interface (LOI)
• Scaled variable
• Configurable
alarms
• Expanded
engineering units
• Updated
electronics
hardware design
• Intrinsic Safety
temperature
classification
change
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2.3 HART® installation flowchart
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2.4 Transmitter overview
The Rosemount 3051P In-Line Pressure Transmitter is offered for gage pressure (GP) and
absolute pressure (AP) measurements. The transmitter uses piezoresistive sensor
technology for AP and GP measurements.
The major components of the transmitter are the sensor module and the electronics
housing. The sensor module contains the oil-filled sensor system (isolating diaphragm, oil
fill system, and sensor). The electronics board is located within the electronics housing.
The electrical signals from the sensor module are transmitted to the electronics board
which contains the memory module and the analog to digital signal converter (A/D
converter). The signal is then converted to a 4–20mA analog output signal or HART
digital signal. The electronics housing contains the output electronics board, the optional
external configuration buttons, and the terminal block. The basic block diagram of the
transmitter is illustrated in Figure 2-2.
When pressure is applied to the isolating diaphragm, the oil deflects the sensor, which
then changes its capacitance or voltage signal. This signal is then changed to a digital
signal by the Signal Processing. The microprocessor then takes the signals from the Signal
Processing and calculates the correct output of the transmitter. This signal is then sent to
the D/A converter, which converts the signal back to the analog signal and then
superimposes the HART signal on the 4–20 mA output.
®
An optional LCD display can be ordered that connects directly to the interface board,
which maintains direct access to the signal terminals. The display indicates output and
abbreviated diagnostic messages. A glass display cover is provided. For 4-20 mA HART
output, the LCD display features a two-line display. The first line displays the actual
measured value; the second line of six characters displays the engineering units. The LCD
display can also display diagnostic messages.
Note
LCD display uses a 5x6 character display and can display output and diagnostic messages.
The local operator interface (LOI) display uses an 8x6 character display and can display
output and diagnostic messages as well as and LOI menu screens. The LOI display comes
with two buttons mounted on the front of the display board. See Figure 2-1.
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Figure 2-1: LCD/LOI display
LCD display LOI display
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Figure 2-2: Block Diagram of Operation
A. Sensor module and electronics
B. 4-20 mA signal to control system
C. Field Communicator
D. Signal processing
E. Temperature sensor
F. Pressure sensor
G. Sensor module memory
H. Microprocessor
• Sensor linearization
• Rerange
• Damping
• Diagnostics
• Engineering units
• Communication
I. Memory
• Configuration
J. Digital-to-analog signal conversion
K. Digital communication
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2.5 Configuration overview
This section contains information on commissioning and tasks that should be performed
on the bench prior to installation, as well as tasks performed after installation as described
in Performing transmitter tests.
Field Communicator, AMS Device Manager, and local operator interface (LOI) instructions
are given to perform configuration functions. For convenience, Field Communicator Fast
Key sequences are labeled “Fast Keys,” and abbreviated LOI menus are provided for each
function below.
Full Field Communicator menu trees and Fast Key sequences are available in Field
Communicator menu trees and Fast Keys. LOI menu trees are available in Local operator
interface (LOI).
2.6 Configuration basics
CAUTION
2.6.1
Set all transmitter hardware adjustments during commissioning to avoid exposing the
transmitter electronics to the plant environment after installation.
You can configure the transmitter either before or after installation. Configuring the
transmitter on the bench using either a Field Communicator, AMS Device Manager, or LOI
ensures all transmitter components are in working order prior to installation. Verify that
the security switch is set in the unlock position ( ) to proceed with configuration. See
Figure 4-2 for switch location.
Configuring on the bench
To configure on the bench, you will need a power supply and a Field Communicator, AMS
Device Manager, or local operator interface (LOI), option M4.
Wire equipment as shown in Figure 2-3. To ensure successful HART® communication, a
resistance of at least 250 Ωs must be present between the transmitter and the power
supply; see Power supply for details. Connect the Field Communicator leads to the
terminals labeled “COMM” on the terminal block.
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SAVE
1. Overview
2. Configure
3. Service Tools
3051 FT 45B
Online
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Figure 2-3: Wiring the Transmitter (4–20 mA HART)
A. Vdc supply
B. R L ≥ 250 (necessary for HART communication only)
2.6.2
Configuration tools
Configuring with a Field Communicator
There are two interfaces available with the Field Communicator: traditional and
dashboard.
This manual describes all steps using a Field Communicator using dashboard interfaces.
Figure 2-4 shows the Device Dashboard interface. As stated in System readiness, it is
critical that the latest device descriptors (DDs) are loaded into the Field Communicator.
Visit Emerson.com or FieldCommGroup.org to download the latest DD library.
Field Communicator menu trees and Fast Keys are available in Field Communicator menu
trees and Fast Keys.
Figure 2-4: Device Dashboard
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Configuring with AMS Device Manager
Full configuration capability with AMS Device Manager requires loading the most current
device descriptor (DD) for this device. Download the latest DD at Emerson.com or
FieldCommGroup.org.
Note
This manual describes all steps using AMS Device Manager version 11.5.
Configuring with a local operator interface (LOI)
To use the LOI, order the transmitter with option code M4. To activate the LOI push either
configuration button. Configuration buttons are located on the LCD display (must remove
housing cover to access), or underneath the top tag of the transmitter. See Table 2-2 for
configuration button functionality and Figure 2-5 for configuration button location.
When using the LOI for configuration, several features require multiple screens for a
successful configuration. Data entered will be saved on a screen-by-screen basis; the LOI
will indicate this by flashing SAVED on the LCD display each time.
LOI menu trees are available in Local operator interface (LOI).
Figure 2-5: LOI Configuration Buttons
A. Internal configuration buttons
B. External configuration buttons
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Table 2-2: LOI Button Operation
Button
Left No SCROLL
Right Yes ENTER
2.6.3 Setting the loop to manual
Whenever sending or requesting data that would disrupt the loop or change the output of
the transmitter, set the process application loop to manual control.
The Field Communicator, AMS Device Manager, or local operator interface (LOI) will
prompt you to set the loop to manual when necessary. The prompt is only a reminder;
acknowledging this prompt does not set the loop to manual. You must set the loop to
manual control as a separate operation.
2.7 Verifying configuration
Emerson recommends verifying various configuration parameters prior to installing them
into the process.
The various parameters are detailed out for each configuration tool. Depending on what
configuration tool(s) are available follow the steps listed relevant to each tool.
2.7.1
Verifying configuration with Field Communicator
Review configuration parameters listed in Table 2-3 prior to transmitter installation. A Full
list of configuration parameters that can be reviewed and configured using a Field
Communicator are located in Field Communicator menu trees and Fast Keys.
Fast Key sequences for the latest device descriptor (DD) are shown in Table 2-3. For Fast
Key sequences for legacy DDs, contact your local Emerson Representative.
Procedure
From the HOME screen, enter the Fast Key sequences listed
Table 2-3: Device Dashboard Fast Key Sequence
Function Fast Key sequence
HART® 7 HART 5
Alarm and saturation levels 2, 2, 2, 5 2, 2, 2, 5
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Table 2-3: Device Dashboard Fast Key Sequence (continued)
Function Fast Key sequence
HART® 7 HART 5
Damping 2, 2, 1, 1, 5 2, 2, 1, 1, 5
Primary variable 2, 1, 1, 4, 1 2, 1, 1, 4, 1
Range values 2, 1, 1, 4 2, 1, 1, 4
Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1
Transfer function 2, 2, 1, 1, 6 2, 2, 1, 1, 6
Units 2, 2, 1, 1, 4 2, 2, 1, 1, 4
2.7.2 Verifying configuration with AMS Device Manager
Procedure
1. Right click on the device and select Configuration Properties from the menu.
2. Navigate the tabs to review the transmitter configuration data.
2.7.3
Verifying configuration with local operator interface (LOI)
Procedure
1. Press any configuration button to activate the LOI.
2. Select VIEW CONFIG to review the below parameters.
3. Use the configuration buttons to navigate through the menu.
Review the following pareameters prior to installation:
• Tag
• Units
• Transfer Function
• Alarm and Saturation Levels
• Primary Variable
• Range Values
• Damping
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2.7.4 Verifying process variables configuration
This section describes how to verify that the correct process variables are selected.
Verifying process variables with a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys 3, 2, 1
Verifying process variables with AMS Device Manager
Procedure
1. Right click the device and select Overview from the menu.
2. Select the All Variables button to display the primary, secondary, tertiary, and
quaternary variables.
2.8 Basic setup of the transmitter
This section provides the necessary steps for basic setup of a pressure transmitter.
When installing in DP level or DP flow applications, refer to Configuring scaled variable for
setup instructions.
2.8.1
Setting pressure units
The pressure unit command sets the unit of measure for the reported pressure.
Setting pressure units with a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Setting pressure units with AMS Device Manager
Procedure
1. Right click the device and select Configure.
2. Select Manual Setup and select desired units from Pressure Units dropdown menu.
3. Select Send when complete.
2, 2, 1, 1, 4
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Setting pressure units with a local operator interface (LOI)
Procedure
1. Follow Figure 2-6 to select desired pressure and temperature units.
2. Use the SCROLL and ENTER buttons to select desired unit.
3. Save by selecting SAVE as indicated on the LCD display screen.
Example
Figure 2-6: Selecting Units with LOI
2.8.2 Reranging the transmitter
The range values command sets each of the lower and upper range analog values to a
pressure. The lower range point represents 0 percent of range and the upper range point
represents 100 percent of range.
In practice, the transmitter range values may be changed as often as necessary to reflect
changing process requirements.
Select from one of the methods below to rerange the transmitter. Each method is unique;
examine all options closely before deciding which method works best for your process.
• Rerange by manually setting range points with a Field Communicator, AMS Device
Manager, or local operator interface (LOI).
• Rerange with a pressure input source and a Field Communicator, AMS Device Manager,
LOI, or local zero and span buttons.
Manually rerange the transmitter by entering range points
Entering range points with a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
2, 2, 2, 1
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Entering range points with AMS Device Manager
Procedure
1. Right click the device and select Configure.
2. Select Manual Setup and select Analog Output.
3. Enter upper and lower range values in the Range Limits box and click Send.
4. Carefully read the warning and click Yes if it is safe to apply the changes.
Entering range points with a local operator interface (LOI)
See Figure 2-7 to rerange the transmitter using the LOI.
Procedure
Enter values using SCROLL and ENTER buttons.
Figure 2-7: Rerange with LOI
Rerange the transmitter with applied pressure source
Reranging using an applied pressure source is a way of reranging the transmitter without
entering specific 4 and 20 mA points.
Rerange with an applied pressure source using a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Rerange with an applied pressure source using AMS Device Manager
Procedure
1. Right click the device; select Configure.
2. Select the Analog Output tab.
3. Select Range by Applying Pressure and follow the screen prompts range the
transmitter.
2, 2, 2, 2
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Rerange with an applied pressure source using local zero and span buttons
If you order local zero and span buttons (option code D4), you can use them to rerange the
transmitter with an applied pressure. Refer to Figure 2-8 for analog zero and span button
location.
To rerange the transmitter using the span and zero buttons, perform the following
procedure:
Procedure
1. Loosen the screw holding the top tag of the transmitter housing. Rotate the label to
expose the zero and span buttons.
2. Confirm device has local zero and span buttons by verifying blue retainer under the
tag.
3. Apply transmitter pressure.
4. Rerange the transmitter.
a) To change the zero (4 mA) while maintaining the span: press and hold zero
button for at least two seconds then release.
b) To change the span (20 mA) while maintaining the zero point: press and hold
the span button for at least two seconds and then release.
Example
Note
4 mA and 20 mA points must maintain the minimum span defined in Specifications and
reference data.
Figure 2-8: Analog Zero and Span Buttons
A. Zero and span buttons
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Note
• If the transmitter security is on, you cannot make adjustments to the zero and span.
Refer to Configuring transmitter security for security information.
• The span is maintained when the 4 mA/1 V point is set. The span changes when the 20
mA/5 V point is set. If the lower range point is set to a value that causes the upper
range point to exceed the sensor limit, the upper range point is automatically set to the
sensor limit, and the span is adjusted accordingly.
• Regardless of the range points, the transmitter measures and reports all readings
within the digital limits of the sensor. For example, if the 4 and 20 mA points are set to
0 and 10 inH2O, and the transmitter detects a pressure of 25 inH2O, it digitally outputs
the 25 inH2O reading and a 250 percent of range reading.
2.8.3 Damping
The damping command changes the response time of the transmitter; higher values can
smooth variations in output readings caused by rapid input changes.
Determine the appropriate damping setting based on the necessary response time, signal
stability, and other requirements of the loop dynamics within your system. The damping
command utilizes floating point configuration, allowing you to input any damping value
within 0.0–60.0 seconds.
Damping with a Field Communicator
Procedure
1. From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
2. Enter desired damping value and select APPLY.
2, 2, 1, 1, 5
Damping with AMS Device Manager
Procedure
1. Right click the device and select Configure.
2. Select Manual Setup.
3. Within the Pressure Setup box, enter desired damping value and click Send.
4. Carefully read the warning and click Yes if it is safe to apply the changes.
Damping with a local operator interface (LOI)
Procedure
Reference Figure 2-9 to enter damping values using an LOI.
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Figure 2-9: Damping with LOI
2.9 Configuring the LCD display
The LCD display configuration command allows customization of the LCD display to suit
application requirements.
The LCD display will alternate between the selected items.
• Pressure Units
• % of Range
• Scaled Variable
• Sensor Temperature
• mA/Vdc Output
Use the following instructions to configure the LCD display to display configuration
information during the device startup. Select Review Parameters at start-up to enable or
disable this functionality.
See Table 2-2 for an image of the LCD display screen.
2.9.1
Configuring LCD display with a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
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2.9.2 Configuring LCD display with AMS Device Manager
Procedure
1. Right click on the device and select Configure.
2. Select Manual Setup; select the Display tab.
3. Select desired display options and click Send.
2.9.3 Configuring LCD display with a local operator interface (LOI)
Procedure
Refer to Figure 2-10 for LCD display configuration using an LOI.
Figure 2-10: Display with LOI
2.10 Detailed transmitter setup
2.10.1 Configuring alarm and saturation levels
In normal operation, the transmitter will drive the output in response to pressure from the
lower to upper saturation points. If the pressure goes outside the sensor limits, or if the
output would be beyond the saturation points, the output will be limited to the associated
saturation point.
The transmitter automatically and continuously performs self-diagnostic routines. If the
self-diagnostic routines detect a failure, the transmitter drives the output to configured
alarm and value based on the position of the alarm switch. See Set transmitter alarm.
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Table 2-4: Alarm and Saturation Values
Level 4–20 mA saturation 4–20 mA alarm
Low 3.90 mA ≤ 3.75 mA
High 20.80 mA ≥ 21.75 mA
Table 2-5: NAMUR-Compliant Alarm and Saturation Values
Level 4–20 mA saturation 4–20 mA alarm
Low 3.80 mA ≤ 3.60 mA
High 20.50 mA ≥22.50 mA
Table 2-6: Custom Alarm and Saturation Values
Level 4–20 mA saturation 4–20 mA alarm
Low 3.50 mA– 3.90 mA 3.40–3.80 mA
High 20.10 mA –22.90 mA 20.20 mA – 23.00 mA
You can configure failure mode alarm and saturation levels using a Field Communicator,
AMS Device Manager, or local operator interface (LOI). The following limitations exist for
custom levels:
• Low alarm level must be less than the low saturation level.
• High alarm level must be higher than the high saturation level.
• Alarm and saturation levels must be separated by at least 0.1 mA.
The configuration tool will provide an error message if the configuration rule is violated.
Note
Transmitters set to HART® multidrop mode send all saturation and alarm information
digitally; saturation and alarm conditions will not affect the analog output. See also
Establishing multidrop communication.
Configuring alarm and saturation levels using a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
2, 2, 2, 5
Configuring alarm and saturation levels with AMS Device Manager
Procedure
1. Right click on the device and select Configure.
2. Select Configure Alarm and Saturation Levels.
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3. Follow screen prompts to configure alarm and saturation levels.
Configuring alarm and saturation levels using a local operator interface (LOI)
Procedure
Refer to Figure 2-11 for instructions to configure alarm and saturation levels.
Figure 2-11: Configuring Alarm and Saturation with LOI
2.10.2 Configuring scaled variable
With the scaled variable, you can create a relationship/conversion between the pressure
units and user-defined/custom units.
There are two use cases for scaled variable:
1. Allow custom units to be displayed on the transmitter's LCD/local operator interface
(LOI) display.
2. Allow custom units to drive the transmitters 4-20 mA output.
If the you want custom units to drive the 4–20 mA output, re-map the scaled variable as
the primary variable. Refer to Re-mapping device variables.
The scaled variable configuration defines the following items:
Scaled variable units
Scaled data options
Pressure value position 1
Scaled variable position 1
Pressure value position 2
Scaled variable position 2
Linear offset
Custom units to be displayed.
Defines the transfer function for the application.
Lower known value point with consideration of linear offset.
Custom unit equivalent to the lower known value point.
Upper known value point.
Custom unit equivalent to the upper known value point.
The value required to zero out pressures affecting the
desired pressure reading.
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Configuring a scaled variable using a Field Communicator
Procedure
1. From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys 2, 1, 4, 7
2. Follow the screen prompts to configure scaled variable.
a) Select Linear under Select Scaled data options.
Configuring a scaled variable using AMS Device Manager
Procedure
1. Right click on the device and, select Configure.
2. Select the Scaled Variable tab and select the Scaled Variable button.
3. Follow screen prompts to configure scaled variable.
a) Select Linear under Select Scaled data options.
Configuring a scaled variable using a local operator interface (LOI)
Procedure
Refer to Figure 2-12 for instructions to configure a scaled variable using an LOI.
Figure 2-12: Configuring Scaled Variable Using an LOI
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2.10.3 Re-mapping device variables
The re-mapping function allows you to configure the transmitter primary, secondary,
tertiary, and quaternary variables (PV, 2V, 3V, and 4V) as desired.
You can re-map the PV with a Field Communicator, AMS Device Manager, or a local
operator interface (LOI). You can only re-map variables 2V, 3V, and 4V via Field
Communicator or AMS Device Manager.
Note
The variable assigned to the primary variable drives the 4–20 mA output. This value can be
selected as Pressure or Scaled Variable. The 2, 3, and 4 variables only apply if using HART
burst mode.
Re-map device variables using a Field Communicator
Procedure
From the HOME screen, enter the Fast Key sequence.
®
Fast Keys
2, 1, 1, 3
Re-map device variables using AMS Device Manager
Procedure
1. Right click the device and select Configure.
2. Select Manual Setup and click on the HART tab.
3. Assign Primary, secondary, tertiary, and quaternary variables under Variable
Mapping.
4. Select Send.
5. Carefully read the warning and select Yes if it is safe to apply the changes.
Re-map device variables using local operator interface (LOI)
Procedure
Refer to Figure 2-13 for instructions on re-mapping the primary variable using an LOI.
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Figure 2-13: Re-mapping with LOI
2.11 Performing transmitter tests
2.11.1 Verifying alarm level
If the transmitter is repaired or replaced, verify the transmitter alarm level before
returning the transmitter to service.
This is useful in testing the reaction of the control system to a transmitter in an alarm
state. It ensures that the control system recognizes the alarm when activated. To verify the
transmitter alarm values, perform a loop test and set the transmitter output to the alarm
value (see Table 2-4, Table 2-5, and Table 2-6).
Note
Before returning transmitter to service, verify security switch is set to the correct position.
Refer to Verifying configuration.
2.11.2
Performing an analog loop test
The analog loop test command verifies the output of the transmitter, the integrity of the
loop, and the operations of any recorders or similar devices installed in the loop. Emerson
recommends testing the 4-20 mA points in addition to alarm levels when installing,
repairing, or replacing a transmitter.
The host system may provide a current measurement for the 4–20 mA HART® output. If it
does not, connect a reference meter to the transmitter by either connecting the meter to
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