Rosemount 3144, 3244MV User Manual
00809-0100-4724
English
Rev. CA
Model 3144 and 3244MV
Smart Temperature
Transmitters
Product
Manual
Model 3144 and 3244MV Smart
Temperature Transmitters
Model 3144 and 3244MV Revision: 5.2.1
HART Communicator Field Device Revision: Dev. v2, DD v1
NOTICE
Read this manual before working with the product. For personal and system safety,and
for optimum product performance, makesure you thoroughly understandthecontents
before installing, using, or maintaining this product.
Withinthe United States, RosemountInc. 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 Respon se Center
Equipment service needs.
1-800-654-7768 (24hours—includes Canada)
Outside of the United States, contact yourlocal Rosemount representative.
Rosemount Inc.
8200 Market Boulevard
Chanhassen, MN 55317 USA
Tel 1-800-999-9307
Telex 4310012
Fax (612) 949-7001
00809-0100-4724
© Rosemount Inc. 1999
http://www.rosemount.com
The products describedin thisdocument are NOTdesigned for nuclear-qualified
applications. Using non-nuclear qualified products in applications that require nuclearqualified hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contactyourlocal Rosemount
SalesRepresentative.
Rosemount Models 3144 and 3244MV Smart Temperature Transmitters may be protected by one or more
U.S. Patents Pending. Other foreign patents pending.
Rosemount, the Rosemount logotype, SMART FAMILY, Hot Backup, and Tri-Loop are registered
trademarks of Rosemount Inc.
Teflon is a registered trademark of E.I. du Pont de Nemours & Co.
HART is a registered trademark of the HART Communication Foundation.
Minigrabber is a trademark of Pomona Electronics.
Inconel is a registered trademark of International Nickel Co.
COVER PHOTO: 3144-010AC
Fisher-Rosemount satisfies all obligations coming from legislation
to harmonise product requirements in the European Union.
Table of Contents
SECTION 1
Introduction
SECTION 2
Installation
UsingthisManual..................................1-1
Getting Acquainted with the Transmitter ................1-2
Software Compatibility..............................1-2
Overview.........................................2-1
SafetyMessages...................................2-1
Warnings......................................2-1
Commissioning: On the Bench or in t he Loop............2-2
GeneralConsiderations..............................2-3
ElectricalConsiderations............................2-3
Power Supply...................................2-3
FieldWiring....................................2-4
Power/CurrentLoopConnections...................2-4
Grounding .....................................2-5
Surges/Transients................................2-6
Multichannel Installations .........................2-6
FailureModeandSecurityJumpers....................2-7
FailureModeJumper.............................2-7
TransmitterSecurityJumper.......................2-7
Changing the Position of the Failure Mode or
SecurityJumper.................................2-7
SensorConnections.................................2-8
RTD or Ohm Inputs ..............................2-8
Thermocouple or Millivolt Inputs ...................2-8
MechanicalConsiderations...........................2-9
Mounting......................................2-9
AccessRequirements.............................2-9
EnvironmentalConsiderations........................2-11
TemperatureEffects..............................2-11
MoistorCorrosiveEnvironments...................2-12
Hazardous Locations Installations...................2-13
InstallationProcedure...............................2-13
TypicalNorthAmericanConfiguration...............2-13
TypicalEuropeanConfiguration....................2-15
Installation in Conjunction with a Model 333
HART Tri-Loop HART-to-Analog Signal Converter ......2-16
Commissioning the Transmitter for Use with the
HARTTri-Loop...................................2-17
v
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
SECTION 3
On-line Operations
Overview.........................................3-1
SafetyMessages...................................3-1
Warnings......................................3-1
Setting the Loop to Manual ........................3-2
ReviewConfigurationData ..........................3-2
Review........................................3-2
CheckOutput.....................................3-2
ProcessVariables................................3-2
BasicSetup.......................................3-5
SelectSensorType...............................3-5
SetOutputUnits.................................3-5
Rerange .......................................3-6
DetailedSetup.....................................3-6
50/60HzFilter..................................3-6
TerminalTemperatureSettings.....................3-6
Signal Condition ................................3-6
AnalogOutput..................................3-6
DisableSpecialSensor............................3-6
HARTOutput...................................3-6
MeterSettings ..................................3-6
AlarmValues...................................3-7
ProcessVariableDamping.........................3-7
DifferentialTemperature..........................3-8
AverageTemperature.............................3-9
HotBackup ....................................3-10
DriftAlert......................................3-11
InformationVariables...............................3-13
Tag...........................................3-13
Descriptor......................................3-13
Message.......................................3-13
Date..........................................3-13
Sensor1SerialNumber...........................3-13
Sensor2SerialNumber...........................3-13
Diagnostics and Service .............................3-14
TestDevice ....................................3-14
LoopTest......................................3-14
SensorCurrent..................................3-15
Calibration .......................................3-15
DecidingWhichTrimProceduretoUse..............3-15
SensorTrim....................................3-16
Transmitter-SensorMatching ......................3-19
OutputTrim....................................3-20
ScaledOutputTrim..............................3-21
ApplyValues...................................3-21
Multidrop Communication.........................3-21
vi
Table of Contents
SECTION 4
Maintenance
SECTION 5
Specifications and
Reference Data
Overview.........................................4-1
SafetyMessages...................................4-1
Warning.......................................4-1
Hardware Diagnostics...............................4-2
HardwareMaintenance..............................4-3
TestTerminals..................................4-3
Sensor Checkout ................................4-3
DisassemblingtheElectronicsHousing...............4-4
AssemblingtheElectronicsHousing.................4-6
ReturnofMaterials.................................4-6
Specifications.....................................5-1
FunctionalSpecifications..........................5-1
PerformanceSpecifications........................5-6
PhysicalSpecifications ...........................5-7
TransmitterDimensionalDrawings....................5-8
ReferenceData....................................5-10
OrderingInformation...............................5-12
PartsList.........................................5-14
Intermittent Sensor Algorithm ........................5-14
Intermittent Sensor Detect (Advanced Function) .......5-18
SECTION 6
Options
Overview.........................................6-1
SafetyMessages...................................6-1
Warnings......................................6-1
Custom Transmitter Configuration (Option Code C1) . . . 6-1
Trim to Specific Ros emount RTD Calibration Schedule
(Transmitter-Sensor Matching) (Option Code C2) ......6-1
Five-PointCalibration(OptionCodeC4).............6-1
CalibrationCertificate(OptionCodeQ4).............6-2
TrimtoSpecialSensor(OptionCodeC7).............6-2
MountingBrackets(OptionCodesB4andB5).........6-2
AssemblyOptions(OptionCodeX1,X2,andX3)......6-3
External Ground Lug Assembly (Option Code G1) .....6-3
50HzLineVoltageFilter(OptionCodeF5)...........6-3
NAMUR Compliant Operation
(OptionCodesA1andCN)........................6-3
TransientProtection(OptionCodeT1)...............6-4
HotBackup(OptionCodeU1) .....................6-4
Average Temperature with Hot Backup and Drift Alert
(OptionCodeU2)................................6-5
TwoIndependentSensors(OptionCodeU4)..........6-5
DifferentialTemperature(OptionCodeU5)...........6-5
AverageTemperature(OptionCodeU6)..............6-5
LCDMeter(OptionCodeM5)........................6-6
Installing the Meter ..............................6-7
Diagnostic Messages .............................6-8
vii
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
APPENDIX A
Transmitter Improvements
APPENDIX B
Model 275
HART Communicator
APPENDIX C
Model 268
SMART FAMILY Interface
Overview.........................................A-1
RevisionDifferencesSummary.......................A-1
Overview.........................................B-1
SafetyMessages...................................B-2
Warnings......................................B-2
Model 3144 and 3244MV Menu Trees..................B-2
Connections and Hardware...........................B-4
CommunicatorKeys................................B-6
Fast-KeySequences..............................B-8
MenusandFunctions...............................B-8
MainMenu.....................................B-8
OnlineMenu ...................................B-9
Diagnostic Messages .............................B-9
Overview.........................................C-1
SafetyMessages...................................C-1
Warnings......................................C-1
3144/3244MV ..................................C-2
Connections and Hardware...........................C-3
BasicFeatures.....................................C-3
DedicatedKeys .................................C-3
AlphanumericandShiftKeys......................C-4
FunctionKeys ..................................C-5
FunctionKeySequences..........................C-5
Diagnostics Messages ............................C-6
APPENDIX D
Overview.........................................D-1
Hazardous Area Approval
Installation Drawings
GLOSSARY Glossary.........................................G-1
INDEX Index............................................I-1
viii
Section
1 Introduction
USING THIS MANUAL This manual is intended to assist in installing, operating, and
maintaining Rosemount Model 3144 and 3244MV Smart Temperature
Transmitters.
Section 2: In stallation
Section 2 explains how to commission transmitters; provides an
installation flowchart; and describes electrical, mechanical, and
environmental installation considerations.
Section 3: On-line Operations
Section 3 describes how to configure transmitter software, select a
sensor type, adjust the input and output electronics; and how to change
output characteristics (range settings, output type, damping, and units)
and non-output-related transmitter characteristics (including the
transmitter tag number, date, and message).
Section 4: Maintenanc e
Section 4 describes hardware diagnostics, maintenance tasks, and
hardware troubleshooting.
Section 5: Specifications and Reference Data
Section 5 lists functional, performance, and physical specification data
for the transmitter. This section also includes transmitter drawings,
ordering information, and a list of spare parts.
Section 6: Options
Section 6 presents options including the LCD meter, mounting
brackets, custom configuration and calibration, trim to special sensor,
and external ground-lug assembly.
Appendix A: Transmitter Improvements
Appendix A describes the enhancements that have been made to the
Model 3144 and 3244MV Smart Temperature Transmitters, and
includes a chart that compares previous transmitter versions to the
current improved transmitter version.
®
Appendix B: Model 275 HART
Appendix B provides a complete menu tree, a table of fast key
sequences, and other information regarding use of the Model 275
®
HART
Appendix C: Model 268 SMART FAMILY
Appendix C provides a complete menu tree and other information
regarding use of the Model 268 SMART FAMILY® Interface.
Communicator.
Communicator
®
Interface
Appendix D: Hazardous Area Approval Installation Drawings
Appendix D provides hazardous location installation drawings.
1-1
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
GETTING ACQUAINTED WITH THE TRANSMITTER
SOFTWARE COMPATIBILITY
The Rosemount Model 3144 and 3244MV Smart Temperature
Transmitters are microprocessor-based instruments that accept input
from a wide variety of sensors, and transmit temperature data to a
control system or transmitter interface. The transmitters combine
Rosemount reliability with the flexibility of digital electronics. The
transmitters are ideal for applications that require high performance or
remote communication.
Each transmitter is designed to communicate with a HART
communicator. Communicators are used to interrogate, configure, test,
or format the transmitter, as well as other products in the Rosemount
family of microprocessor-based instruments. Moreover, HART
communicators can communicate with a transmitter from the control
room, from the transmitter site, or from any other wiring termination
point in the loop where there is between 250 and 1100 ohms resistance
between the transmitter power connection and the power supply.
Special dual-sensor features of the Model 3244MV include Hot
Backup
measurements, and four simultaneous measurement variable outputs
in addition to the analog output signal.
Software for Rosemount SMART FAMILY products is revised
periodically. Replacement transmitters may contain revised software
that is incompatible with the existing software in your HART
communicator.
®
, drift alert, differential and average temperature
Software loaded into the Model 275 HART Communicator that contains
device descriptors (DDs) compatible with the Model 3144 and 3244MV
transmitters can be included in the communicator initially, or entered
at any Rosemount Service Center upon request. Rerange and read-only
capabilities can be attained with revision 5.0 or later Model 268
communicator software. The HART Communicator Field Device
Revision Dev v2, DD v1 should be loaded into the Model 257 HART
Communicator in order to utilize all of the features available in the
Model 3144 and 3244MV. See Appendix B: Model 275 HART
Communicator for more information concerning device revisions.
Upgrading the Model 268 software to revision 7.0 will allow limited
functionality such as changing the sensor type and number of wires,
and performing trim functions. The Model 275 HART Communicator is
the necessary interface for complete functionality, and is recommended.
Contact the Rosemount Service Center nearest you to obtain the
appropriate HART communicator software.
1-2
Section
2 Installation
OVERVIEW The information in this section includes transmitter installation
instructions, an installation flowchart (Figure 2-1 on page 2-2),
installation drawings, and special installation considerations.
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.
Warnings
Explosions could result in death or serious injury:
• Do not remove the transmitter cover in explosive atmospheres when the circuit
is alive.
• Before connecting a HART 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 consistentwith the
appropriate hazardous locationscertifications.
• Bothtransmitter 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 orsensors before applyingpressure,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.
2-1
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
COMMISSIONING: ON THE BENCH OR IN THE LOOP
Figure 2-1. Installation Flowchart.
STA RT
HERE
Bench
Calibration?
Yes
BASIC SETUP VERIFY FIELD INSTALL
Set Units
The transmitter may be commissioned before or after installation.
However, it may be useful to commission the transmitter on the bench
before installation to ensure proper operation and to familiarize
yourself with its functionality.
No
Simulate
Sensor Input
Set Jumpers
or Switches
Set Range
Values
Set Sensor
Type
Set Num ber
of Wires
Set Damping
Within
Specifications?
No
Refer to
Section 4 :
Maintenance
Mount the
Transmitter
Yes
Wire the
Transmitter
Power the
Transmitter
Check for
Process Leaks
DONE
2-2
Installation
GENERAL CONSIDERATIONS
Electrical temperature sensors such as resistance temperature
detectors (RTDs) and thermocouples (T/Cs) produce low-level signals
proportional to temperature. The Model 3144 and 3244MV transmitters
convert low-level sensor signals to a standard 4–20 mA dc signal that is
relatively insensitive to lead length and electrical noise. This current
signal is then transmitted to the control room via two wires.
Figures 2-9 and 2-12 show recommended mounting configurations for
transmitters and sensor assemblies. Refer to Section 6: Options for
additional transmitter mounting accessories.
ELECTRICAL CONSIDERATIONS
Proper electrical installation is necessary to prevent errors due to
sensor lead resistance and electrical noise. Shielded cable should be
used for best results in electrically noisy environments. The current
loop must have between 250 and 1100 ohms in order to communicate
with a HART communicator. Refer to Figure 2-4 on page 2-5 for sensor
and current loop connections.
Power Supply To communicate with a transmitter, you will need a 17.75 V dc
minimum power supply. The power supplied to the transmitter should
not drop below the transmitter lift-off voltage (see Figure 2-2). If the
power drops below the lift-off voltage while the transmitter is being
configured, the transmitter may interpret the configuration
information incorrectly.
Figure 2-2. Load Limits.
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.
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.
Maximum Load = 43.5 3 (Supply Voltage – 12.0)
1322
1100
1000
750
500
Load (Ohms)
250
0
10
4–20 mA dc
Operating
Region
20 30 40 42.4
12.0
Supply Voltage (V dc)
2-3
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
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 power the transmitter, follow the steps below.
1. Remove the transmitter covers. Do not remove the transmitter
covers in an explosive atmosphere when the circuit is alive.
2. Connect the positive power lead to the terminal marked “+” and
the negative power lead to the terminal marked “–” as shown in
Figure 2-3. When wiring to screw terminals, the use of crimped
lugs is recommended.
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.
Figure 2-3. Transmitter Ter minal Block.
Power/Current Loop
Connections
Sensor Terminals
Negative Terminal
Positive Terminal
Test Terminal
Ground Term inal
3144-0200E01D
Use ordinary copper wire of 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 2-4.
2. Recheck the polarity and correctness of connections.
3. Turn the power ON.
For information about multichannel installations, refer to page 2-6. For
information about intrinsically safe installations, refer to page 2-13.
See “Safety Messages” on page 2-1 for complete war ning informatio n.
2-4
Figure 2-4. Connecting a
Communicator to a Transmitter Loop.
Power/Signal
Terminals
Installation
NOTE
Do not connect the power/signal wiring to the test terminals.
The voltage present on the power/signal leads may burn out the
reverse-polarity protection diode that is built in to the test terminal. If
the test terminals’ reverse polarity protection diode is burned out by the
power/signal wiring, the transmitter can still be operated by jumping
the current from one test terminal to the other.
The signal loop may be grounded at any
point or left ungrounded.
≤RL≤1100 V
250 V
A HART communicator may be
connected at any termination
point in thesignal loop. The
signal loop must have between
250 and 1100 ohms load for
communications.
Power
Supply
Grounding Transmitters are electrically isolated to 500 V ac rms. You can ground
the signal wiring at any single point, if desired. When using a grounded
thermocouple, the grounded junction serves as this point.
NOTE
Do not ground the signal wire at both ends.
Shielded Wire Recommended grounding techniques for shielded wire usually call for a
single grounding point for each shielded wire to avoid grounding the
loop. The following two examples employ the single point grounding
technique:
Example 1
Connect the shield for the signal wiring to the shield for the sensor
wiring. Make sure that the two shields are tied together and
electrically isolated from the transmitter housing. Ground the shield
at the power supply end.
3144-0000A04A
Example 2
Connect the shield for the sensor wiring to the ground terminal
inside of the terminal compartment of the transmitter housing. The
shield for the signal wiring should be cut and isolated from the
transmitter housing. This shield should be grounded only at the
power supply end. Never connect the shield for the signal wiring to
the ground terminal inside the transmitter housing.
2-5
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Transmitter Housing Ground the transmitter housing in accordance with local electrical
requirements. An internal ground terminal is standard. An optional
external ground lug assembly (Option Code G1) can also be ordered if
needed. Ordering certain hazardous approvals automatically includes
an external ground lug (see table on page 5-9). External grounding is
recommended when using the optional transient protector (Option
Code T1).
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 either the integral
transient protection board (Option Code T1) or the Rosemount Model
470 Transient Protector. The integral transient protection board is
available as an ordered option or as an accessory. Refer to “Transient
Protection (Option Code T1)” on page 6-4 for more information. The
Model 470 transient protector is available only as an accessory. Refer to
the Model 470 Transient Protector Product Data Sheet (Rosemount
publication no. 00813-0100-4191) for more information.
Multichannel Installations You can connect several transmitters to a single master power supply,
as shown in Figure 2-5. 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
uninterruptible power supply or a back-up battery. The diodes shown in
Figure 2-5 prevent unwanted charging or discharging of the back-up
battery.
Figure 2-5. Multichannel Installations.
Battery
Backup
dc
Power
Supply
To Additional
Transmitters
Transmitter
No. 1
Transmitter
No. 2
R
R
R
Lead
Lead
Lead
Readout or
Controller No. 1
Readout or
Controller No. 2
Between 250 and
1100 Ω If No Load
Resistor
3044-0131A
2-6
Installation
FAILURE MODE AND SECURITY JUMPERS
Failure Mode Jumper 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
jumper).
The analog alarm and saturation values that the transmitter uses
depend on whether it is factory configured to standard or
NAMUR-compliant operation. The values for each are as follows:
Standard Operation
Fail High 21.0 mA ≥ I ≥ 23.0 mA
High Saturation I ≥ 20.5 mA
Low Saturation I ≤ 3.90 mA
Fail Low I ≤ 3.75 mA
NAMUR-Compliant Operation
Fail High 21.0 mA ≥ I ≥ 23.0 mA
High Saturation I ≥ 20.5 mA
Low Saturation I ≤ 3.8 mA
Fail Low I ≤ 3.6 mA
Failure Mode Jumper Locations Without a meter installed:
The failure mode jumper is located on the front side of the
electronics module on the electronics side of the transmitter
housing, and is labeled FAIL MODE (see Figure 2-6 on page 2-8).
With a meter installed:
The failure mode jumper is located on the LCD faceplate on the
electronics module side of the transmitter housing, and is labeled
FAIL MODE (see Figure 2-6 on page 2-8).
Transmitter Security
Jumper
The transmitter is equipped with a write-protect jumper that can be
positioned to prevent the accidental or deliberate change of
configuration data. The security jumper is located on the front side of
the electronics module and is labeled XMTR SECURITY (see Figure 2-6
on page 2-8).
Changing the Position of
the Failure Mode or
Security Jumper
To change the position of the failure mode or security jumper, follow the
steps below.
1. If the transmitter is installed, set the loop to manual.
2. Remove the housing cover on the electronics side. Do not remove
the transmitter cover in explosive atmospheres when the circuit
is alive.
3. Set the jumper(s) to the desired position. See Figure 2-6 on
page 2-8.
4. Replace the transmitter cover. Both transmitter covers must be
fully engaged to meet explosion-proof requirements.
See “Safety Messages” on page 2-1 for complete warning information.
2-7
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Figure 2-6. Transmitter Jumper
Locations.
Security Jumper
Failure Mode Jumper
(without a Meter Installed)
Failure Mode Jumper
(with a Meter Installed)
SENSOR CONNECTIONS Figure 2-7 on page 2-9 shows the correct input connections to the
sensor terminals on the transmitter. 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 when the circuit is alive. 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.
3144-0200G01A, 2352A01D
Thermocouple or Milliv olt
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
The use of two grounded thermocouples with a Model 3244MV
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.
See “Safety Messages” on page 2-1 for complete warning information.
2-8
Figure 2-7. Sensor Wiring Diagram.
Installation
MODEL 3144 SENSOR CONNECTIONS
2-wire RTD
2-wire RTD
2-wire RTD
and Ohms**
and Ohms**
and Ohms
3-wire RTD
3-wire RTD
3-wire RTD
and Ohms**
and Ohms**
and Ohms**
4-wireRTD
and Ohms
T/Cs and Millivolts RTD with
Compensation Loop*
MODEL 3244MV SENSOR CONNECTIONS
2-wire RTD
2-wire RTD
and Ohms**
and Ohms
***
Hot Backup/Dual Sensor with
* Transmitter must be configured for a 3-wireRTD in order to recognize an RTD with a compensation loop.
** Rosemount provides 4-wire sensors for all single-element RTDs. Y oucan use these RTDs in 3-wire configurations by leaving
*** Typicalwiring config uration of a Rosemountdual-elementRTD is shown (R=Red,W=White, G=Green,B=Black).
W
R
Avg. Temp/DT/
the unneeded leads disconnected and insulated with electrical tape.
W&G
G
B
2RTDs**
MECHANICAL CONSIDERATIONS
3-wire RTD
and Ohms**
Avg. Temp/DT/
Hot Backup/Dual Sensor with
2 thermocouples
Use the following information when preparing the installation site and
selecting transmitter options.
4-wire RTD
and Ohms
Avg. Temp/DT/
Hot Backup/Dual Sensor with
RTDs/thermocouples**
T/Cs and Millivolts
Avg. Temp/DT/
Hot Backup/Dual Sensor with
RTDs/thermocouples**
Compensation Loop*
Hot Backup/Dual Sensor
with2RTDswith
Compensation Loop**
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 Figure 2-8
on page 2-10).
RTD with
Avg. Temp/∆T/
3144-0000E05A, F05A, A04A
Mounting 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.
Access Requirements Take into account the need for access to the transmitter when choosing
an installation location and position.
Housing Rotation You may rotate the electronics housing up to 90 degrees in either
direction to improve field access to the two compartments.
Terminal Side of Electronics
Housing
Mount the transmitter so the terminal side is accessible. Be sure to
allow adequate clearance for cover removal. Make wiring connections
through the conduit openings on the bottom of the housing.
2-9
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Circuit S ide of Electronics
Housing
Figure 2-8. Option Code B4 Mounting
Bracket.
PANEL MOU NT
3.65 ±0.06
(2)5/16-inch Bolts not provided
Mount the transmitter so that the circuit side is accessible. Be sure to
provide adequate clearance for cover removal. Also, be sure to account
for extra room if an LCD meter is installed. Refer to Section 6: Options
for more information on the LCD meter option.
PIPE M OUNT
1.04 (26)
1.55
(39.4)
1.0
(25.4)
2.81 ±0.03
NOTE
Dimensions are in inches (millimeters).
Figure 2-9. Option Code B5 Mounting
Bracket.
6.4 (163)
(71.4)
2.0 ± 0.03
(50.8)
0.41 (10.4)
Diameter
0.375 (9.5)
Diameter
2-inch
Pipestand
3144-3144A14A, 0000A01A; 3044-2101A01A; 3144-1081A01B
1.0 (25)
7.2 (182
2-10
3144-0427B, 0427C
Installation
ENVIRONMENTAL CONSIDERATIONS
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 2-11 describes the relationship between
transmitter housing temperature rise and extension length.
Figure 2-10. Model 3144/3244MV
Transmitter Housing Temperature Rise
versus ExtensionLength for a Test
Installation.
HOUSING TEMPERATURE RISE
ABOVE AMBIENT °C (°F)
22
60 (108)
50 (90)
40 (72)
30 (54)
20 (36)
10 (18)
Transmitter Housing
Temperature Risevs.
8
1
5
°
C
(
1
,
5
0
0
°
C
0°
°
F
)
O
(
1
,
0
0
0
°
F)
O
C
(
4
8
2
°
F
)
5
4
0
2
5
Extension Length for a
Test Installation
v
e
n
T
e
mp
e
r
a
v
en
T
e
m
p
e
r
O
v
e
n
T
e
m
p
t
u
r
e
a
t
u
r
e
e
r
a
t
u
r
e
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.
TSA–=
T 85 °C 40 °C–=
T 45 °C=
For a process temperature of 540 °C (see Figure 2-10), an extension
length of 3.6 inches yields a housing temperature rise (R) of 22 °C,
which provides a safety margin of 23 °C. A six-inch extension length
(R = 10 °C) would offer a higher safety margin (35 °C) and would
reduce temperature-effect errors but would probably require extra
support for the transmitter. 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.
3044-0123A
2-11
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Moist or Corrosive
Environments
Figure 2-11. Incorrect Conduit
Installation.
The Model 3144 and 3244MV transmitters have a highly reliable
dual compartment housing designed to resist attack by moisture and
corrosives. 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 installed. In
humid environments, however, it is possible for moisture to
accumulate in conduit lines and drain into the housing.
Proper transmitter installation can ensure optimal operation and
service life and prevent moisture from accumulating in the housing.
Refer to Figure 2-11, and Figure 2-12 before mounting a transmitter.
Mount the transmitter at a high point in the conduit run, if possible,
so that moisture from the conduits will not drain into the housing. If
the transmitter is mounted at a low point in the conduit run, the
terminal compartment could fill with water. In some instances, the
installation of a poured conduit seal, such as the one pictured in
Figure 2-12, is advisable. Remove the terminal compartment cover
periodically and inspect the transmitter for moisture and corrosion.
Conduit
Lines
Conduit
Lines
Figure 2-12. Recommended Mounting
with Drain Seal.
Thermowe ll
Sealing
Compound
Sensor Hex
Union Coupling
with Exten sio n
3144-0429A, 04 29B
Conduit for
Field Wiring
Poured ConduitSeal
(Where R equired)
3144-0430B
2-12
Installation
Hazardous Locations
Installations
INSTALLATION PROCEDURE
The transmitter is designed with explosion-proof housings and circuitry
suitable for intrinsically safe and non-incendive operation. Each
transmitter is clearly marked with a tag indicating the approvals
carried. To maintain certified ratings for installed transmitters, install
in accordance with all applicable installation codes and approval
drawings. 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. Refer to Appendix D: Hazardous Area Approval
Installation Drawings for transmitter installation drawings.
IMPORTANT
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).
Installation consists of mounting the transmitter and sensor and
making electrical connections. If you are mounting the transmitter
directly to the sensor assembly, use the process shown in Figure 2-13. If
you are mounting the transmitter apart from the sensor assembly, use
conduit between the sensor and transmitter. The transmitter accepts
male conduit fittings with
(PG 11), or JIS G
perform the installation.
1
/2 threads. Make sure only qualified personnel
1
/2–14 NPT, M20 × 1.5 (CM 20), PG 13.5
Typical North American
Configuration
1. Mount the thermowell to the pipe or process container wall. Be
sure to install and tighten thermowells and sensors. Perform a
leak check before starting the process.
2. Attach any necessary unions, couplings, and extension fittings.
Be sure to seal the fitting threads with silicone or tape (if
required).
3. Screw the sensor into the thermowell.
4. Verify all sealing requirements for severe environments or to
satisfy code requirements.
5. Attach the transmitter to the thermowell assembly. Be sure to
seal all threads with silicone or tape (if required).
6. Pull sensor leads through the extensions, unions, or couplings
into the terminal side of the transmitter housing.
7. Install conduit for field wiring to the remaining conduit entry of
the transmitter.
8. Pull the field wiring leads into the terminal side of the
transmitter housing. Avoid contact with the leads and terminals.
9. Attach the sensor leads to the transmitter sensor terminals.
Attach the power leads to the transmitter power terminals. Avoid
contact with the leads and terminals.
10. Attach and tighten both transmitter covers. Both transmitter
covers must be fully engaged to meet explosion-proof
requirements.
See “Safety Messages” on page 2-1 for complete warning information.
2-13
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Figure 2-13. Typical North American
Mounting Configuration.
Sensor Hex
Union o r
Coupling
Extension
Thermowell
Conduit for
Field Wiring
(dc power)
NOTE
Dimensions are in inches (millim eters).
Extension Fitting
Length
3.2
(81)
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 installations in
potentially hazardous processes.
3144-0433B
2-14
Installation
Typical European
Configuration
1. Mount the thermowell to the pipe or the process container wall.
Install and tighten thermowells and sensors. Perform a leak
check before starting the process.
2. Attach a connection head to the thermowell.
3. Insert the sensor into the thermowell and attach it to the
connection head.
4. Mount the transmitter to a 2-inch pipe or a suitable panel using
one of the optional mounting brackets. The B4 bracket is shown
in Figure 2-14.
5. Attach cable glands to the shielded cable running from the
connection head to the transmitter and from the transmitter to
the control room.
6. Insert the shielded cable leads into the connection head and the
transmitter through the cable entries. Connect and tighten the
cable glands.
7. Connect the shielded cable leads to the sensor wiring leads inside
of the connection head, and the sensor wiring terminals inside of
the transmitter housing. Avoid contact with the leads and the
terminals.
8. Connect the shielded cable leads to the transmitter power
terminals. Avoid contact with the leads and the terminals.
Figure2-14.TypicalEuropeanProcess
Mounting Configuration.
Cable Gland
Shielded Cable from
Sensor to Transmitter
Shielded Cable
from Transmitter
to Control Room
2-inch
Pipe
B4
Mounting
Bracket
644-0000B05B
See “Safety Messages” on page 2-1 for complete warning information.
2-15
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
INSTALLATION IN
CONJUNCTION WITH A
MODEL 333 HART
TRI-LOOP
HART-TO-ANALOG
SIGNAL CONVERTER
Figure2-15.HARTTri-Loop Installation
Flowchart.
START
HERE
Unpack the
Tri-Loop
Use the Model 3244MV transmitter in operation with two sensors in
conjunction with a Model 333 HART Tri-Loop
®
HART-to-Analog Signal
Converter to acquire an independent 4–20 mA analog output signal for
each sensor input. During normal operation, the Model 3244MV
transmitter outputs four out of the five following digital process
variables: sensor 1, sensor 2, differential temperature, average
temperature, and transmitter terminal temperature. The HART
Tri-Loop divides 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 2-15 for basic installation information. Refer to the
Model 333 HART Tri-Loop HART-to-Analog Signal Converter Product
Manual (Rosemount publication number 00809-0100-4754) for
complete installation information.
INSTALL THE
TRI-LOOP
COMMISSION
THE TRI-LOOP
No
Install the
Model 3244MV
(see page 2-2)
Review the
Tri-Loop
Product Manual
Model 3244MV
Installed?
Yes
Set theModel
3244MV Burst
Command
Order
Set theModel
3244M V to
Burst HART
Command3
ReviewTri-Loop
Installation
Conside r ations
Mount the
Tri-Loop to a
DIN Rail
RunWiresfrom
Model 3244MV
to Burst Input
Terminals
Install Channel 1
Wires fro m
Tri-Loop to
Control Room
OPTIONAL:
Install Channel 2
Wires fro m
Tri-Loop to
Control Room
Configure the
Tri-Loop to
Receive Model
3244MVBurst
Commands
Pass System
Test?
Yes
DONE
No
Refer to th e
HART Tri-Loop
Product Manual
2-16
OPTIONAL:
Install Channel 3
Wires fro m
Tri-Loop to
Control Room
Installation
COMMISSIONING THE TRANSMITTER FOR USE WITH THE HART TRI-LOOP
Set the Transmitter to Burst
Mode
To prepare the Model 3244MV transmitter for use with a Model 333
HART Tri-Loop, you must configure the transmitter to Burst Mode and
set the process variable output order. In Burst Mode, the transmitter
provides digital information for the analog current in mA to the HART
Tri-Loop. The HART Tri-Loop divides the signal into separate 4–20 mA
loops for the primary (PV), secondary (SV), tertiary (TV), and
quaternary (QV) variables. When using the Model 3244MV transmitter
in conjunction with the HART Tri-Loop, you must also consider the
configuration of the differential temperature and Hot Backup features,
if used.
NOTE
These procedures assume that the sensors and the transmitter are
connected, powered, and functioning properly, and that a Model 275
HART Communicator is connected to the transmitter control loop and
is communicating successfully. For communicator usage instructions,
see Appendix B: Model 275 HART Communicator.
To set the transmitter to burst mode, follow the steps below.
1. From the Home screen, select 1 Device setup, 4 Detailed setup,
3 Output condition, 2HART output, 4 Burst option to prepare to
set the transmitter to burst command 3. The communicator
displays the Burst option screen.
Set Process Variable Output
Order
2. Select Process vars/crnt. The communicator returns to the HART
output screen.
3. Select 3Burst mode to prepare to enable Burst Mode. The
communicator displays the Burst Mode screen.
4. Select On to enable Burst Mode. The communicator returns to
the HART output screen.
5. Select Send to download the new configuration information to
the transmitter.
To set the process variable output order, follow the steps below.
1. From the Home screen, select 1 Device setup, 1 Process variables,
7 Variable re-map. Select OK to set the control loop to manual.
The communicator displays the Primary Variable screen.
2. Select the item you wish to set as the primary variable at the
Select PV prompt.
3. Repeat step 2 for the SV, TV, and QV. The communicator displays
the Variable mapping screen.
4. Select OK to accept the order to which the variables are mapped,
or Abort to abort the entire procedure.
NOTE
Take careful note of the process variable output order. You must
configure the HART Tri-Loop to read the variables in the same order.
5. Select OK to return the control loop to automatic control.
2-17
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Special Considerations To initiate operation between a Model 3244MV transmitter and the
HART Tri-Loop, you must consider the configuration of both the
differential temperature and the Hot Backup features, if used.
Differential Temperature Measurement
To enable the differential temperature measurement feature of a
Model 3244MV transmitter operating in conjunction with the HART
Tri-Loop, adjust the range end points of the corresponding channel
on the HART Tri-Loop to include zero. For example, if you wish the
secondary variable of the transmitter to report differential
temperature, configure the transmitter accordingly (see “Set Process
Variable Output Order” on page 2-17), and adjust the corresponding
channel of the HART Tri-Loop so one range end point is negative
and the other is positive.
Hot Backup
To enable the Hot Backup feature of a Model 3244MV transmitter
operating in conjunction with the HART Tri-Loop, ensure that the
output units of the sensors are the same as the units of the HART
Tri-Loop. You may use any combination of RTDs or thermocouples
as long as the units of both match the units of the HART Tri-Loop.
For more information on configuring the transmitter for Hot
Backup, see page 3-10. See ”Using the Tri-Loop to Detect Sensor
Failures and Sensor Drift” for information on how to use the
Tri-Loop to detect sensor failure and sensor drift.
Using the Tri-Loop to Detect
Sensor Failures and Senso r Drift
The Model 3244MV transmitter outputs a digital HART signal
whenever a sensor failure occurs. If an analog warning is required, the
HART Tri-Loop can be configured to produce an analog signal that can
be interpreted by the control system as a sensor failure.
To set up the HART Tri-Loop to transmit sensor failure alerts, follow
the steps below.
1. Configure the Model 3244MV transmitter variable map as shown
in the table.
Variable Mapping
PV Sensor1 or Sensor Average
SV Sensor2
TV Differential Temperature
QV As Desired
2. Configure Channel 1 of the HART Tri-Loop as TV (differential
temperature). If either sensor should fail, the differential
temperature output will be +9999 or –9999 (high or low
saturation), depending on the position of the Failure Mode
Jumper (see “Failure Mode and Security Jumpers” on page 2-7).
3. Select temperature units for Channel 1 that match the
differential temperature units of the transmitter.
2-18
Figure 2-16. Tracking Sensor Drift and
Sensor Failure with Differential
Temperature.
Installation
4. Specify a range for the TV such as –100 to 100 °C. If the range is
large, then a sensor drift of a few degrees will represent only a
small percent of range. If Sensor 1 or Sensor 2 fails, the TV will
be +9999 (high saturation) or –9999 (low saturation). In this
example, zero is the midpoint of the TV range. If a ∆T of zero is
set as the lower range limit (4 mA), then the output could
saturate low if the reading from Sensor 2 exceeds the reading
from Sensor 1. By placing zero in the middle of the range, the
output will normally stay near 12 mA, and the problem will be
avoided.
5. Configure the DCS so that TV < –100 °C or TV > 100 °C indicates
a sensor failure and, for example, TV ≤ –3 °C or TV ≥ 3°C
indicates a drift alert. See Figure 2-16.
Sensor Failure
(Failure Mode Jumper HI)
100 °C
Sensor Drift
3°C
0°C
–3 ° C
DIFFERENTIAL TEMPERATURE
–100 °C
Sensor Drift
Sensor Failure
(Failure Mode Jum per LO)
2-19
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
2-20
Section
3 On-line Operations
OVERVIEW This section contains information needed to configure and format the
Model 3144 and 3244MV Smart Temperature Transmitters. The
transmitters can be configured either on-line or off-line. During on-line
configuration, the transmitter is connected to a HART communicator.
Data are entered in the working register of the communicator and sent
directly to the transmitter. Off-line configuration consists of storing
configuration data in a HART communicator while it is not connected to
a transmitter. Data is stored in nonvolatile memory and can be
downloaded to the transmitter at a later time.
NOTE
The information in this section applies to the use of a Model 275 HART
Communicator to communicate with a Model 3144 or 3244MV Smart
Temperature Transmitter. For information regarding the use of a Model
268 Communicator, refer to Appendix C: Model 268 SMART FAMILY
Interface.
SAFETY MESSAGES Instructions and procedures in this section may require special
precautions to ensure the safety of the personnel performing the
operations. Information that raises potential safety issues is indicated
by a warning symbol ( ). Please refer to the following safety messages
before performing an operation preceded by this symbol.
Warnings
Explosions may result in death or serious injury.
• Do not remove the instrument cover in explosive atmospheres when the circuit
is alive.
• Before connecting a HART 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.
• Bothtransmitter covers must be fully engaged to meet explosion proof
requirements.
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 transmitter leads and terminals.
• Use extreme caution when making contact with the leads and terminals.
3-1
Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
Setting the Loop to Manual Whenever you are preparing to send or request data that would disrupt
the loop or change the output of the transmitter, you must set your
process application loop to manual. Both the Model 275 HART
Communicator and the Rosemount Model 268 SMART FAMILY
Interface will prompt you to set the loop to manual when necessary.
Keep in mind that acknowledging this prompt does not set the loop to
manual. The prompt is only a reminder; you have to set the loop to
manual yourself, as a separate operation.
REVIEW CONFIGURATION DATA
Review all of the factory-set configuration data to ensure that it reflects
the current application before operating the Model 3144 or 3244MV
transmitters in an actual installation.
Review Review the transmitter configuration parameters set at the factory to
HART Fast Keys 1, 5
ensure accuracy and compatibility with your particular application.
After activating the Review function, scroll through the data list to
check each variable. Refer to “Basic Setup” on page 3-5 if a change to
the transmitter configuration data is necessary.
CHECK OUTPUT Before performing other transmitter on-line operations, review the
digital output parameters to ensure that the transmitter is operating
properly and is configured to the appropriate process variables.
Proces s V ariab les The process variables for the Model 3144 and 3244MV transmitters
HART Fast Keys 1, 1
provide the transmitter output. The Process Variable menu displays
process variables and allows for remapping of the values shown. These
process variables are continuously updated. Select Variable Re-map to
change the sequencing of the process variables. With the Model 3144,
two screens follow that allow you to select the primary variable (PV)
and the secondary variable (SV). From each screen you can choose
either sensor 1 or terminal temperature. With the Model 3244MV, four
screens follow that allow you to select the primary variable (PV),
secondary variable (SV), tertiary variable (TV), and quaternary
variable (QV). Primary variable choices include sensor 1, sensor 2,
differential temperature, average temperature, and transmitter
terminal temperature. The primary variable is the 4–20 mA analog
signal.
3-2
See Tables 3-1, 3-2, and 3-3 for a list of interaction rules for varying
transmitter configurations.
Loading...