Rosemount 2051 Pressure Transmitter with HART 4

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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
Rosemount 2051 Pressure Transmitter
with HART 4-20 mA and HART 1-5 Vdc Low Power Protocol
Rosemount 2051CF Series Flowmeter Transmitter
with HART 4-20 mA and HART 1-5 Vdc Low Power Protocol
Start
Step 1: Mount the Transmitter
Step 2: Consider Housing Rotation
Step 3: Set the Jumpers
Step 4: Connect the Wiring and Power
Step 5: Verify Configuration
Step 6: Trim the Transmitter
Safety Instrumented Systems
Product Certifications
End
www.rosemount.com
¢00825-0100-4101¤
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
© 2010 Rosemount Inc. All rights reserved. All marks property of owner. Rosemount and the Rosemount logotype are
registered trademarks of Rosemount Inc.
Rosemount Inc.
Emerson Process Management GmbH & Co.
OHG
8200 Market Boulevard
Chanhassen, MN USA 55317
T (US) (800) 999-9307
T (Intnl) (952) 906-8888
F (952) 949-7001
Argelsrieder Feld 3
82234 Wessling
Germany
T 49 (8153) 9390
F49 (8153) 939172
Emerson Process Management Asia Pacific
Private Limited
Beijing Rosemount Far East Instrument Co.,
Limited
1 Pandan Crescent
Singapore 128461
T (65) 6777 8211
F (65) 6777 0947/65 6777 0743
No. 6 North Street,
Hepingli, Dong Cheng District
Beijing 100013, China
T (86) (10) 6428 2233
F (86) (10) 6422 8586
IMPORTANT NOTICE
This installation guide provides basic guidelines for Rosemount
2051 transmitters. It does not provide instructions for configuration, diagnostics,
maintenance, service, troubleshooting, Explosion-proof, Flameproof, or intrinsically safe
(I.S.) installations. Refer to the 2051 reference manual (document number
00809-0100-4101) for more instruction. This manual is also available electronically on
www.emersonprocess.com/rosemount.
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. Please
review the approvals section of the 2051 reference manual for any restrictions associated
with a safe installation.
• Before connecting a HART-based 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.
• In an Explosion-proof/Flameproof installation, do not remove the transmitter covers
when power is applied to the unit.
Process leaks may cause harm or result in death.
• To avoid process leaks, only use the o-ring designed to seal with the corresponding
flange adapter.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and the terminals. High voltage that may be present on
leads can cause electrical shock.
Conduit/Cable Entries
• Unless marked, the conduit/cable entries in the transmitter housing use a 1/2-14 NPT
thread form. Only use plugs, adapters, glands or conduit with a compatible thread
form when closing these entries.
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
STEP 1: MOUNT THE TRANSMITTER
A. Applications
Liquid Flow Applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Mount the transmitter so that the
drain/vent valves are oriented upward.
w
Flo
Gas Flow Applications
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
Flo
w
Steam Flow Applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
w
Flo
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
STEP 1 CONTINUED...
B. Optional Mounting Brackets
When installing the transmitter to one of the optional mounting brackets, torque the bracket
bolts to 125 in.-lbs. (0,9 N-m).
Rosemount 2051C
Panel Mount(1)
Pipe Mount
Coplanar Flange
Traditional Flange
Rosemount 2051T
(1)
4
Panel bolts are customer supplied.
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
STEP 1 CONTINUED...
C. Bolting Considerations
If the transmitter installation requires assembly of the process flanges, manifolds, or flange
adapters, follow these assembly guidelines to ensure a tight seal for optimal performance
characteristics of the transmitters. Use only bolts supplied with the transmitter or sold by
Emerson as spare parts. Figure 1 illustrates common transmitter assemblies with the bolt
length required for proper transmitter assembly.
Figure 1. Common Transmitter Assemblies
A. Transmitter with
Coplanar Flange
C. Transmitter with Traditional
Flange and Optional Flange
Adapters
D. Transmitter with
Coplanar Flange and
Optional Manifold and
Flange Adapters
4 x 2.25-in. (57 mm)
4 x 1.75-in. (44 mm)
B. Transmitter with Coplanar
Flange and Optional
Flange Adapters
4 x 1.75-in. (44 mm)
4 x 1.50-in. (38 mm)
4 x 1.75-in. (44 mm)
4 x 2.88-in. (73 mm)
Bolts are typically carbon steel or stainless steel. Confirm the material by viewing the
markings on the head of the bolt and referencing Figure 2. If bolt material is not shown in
Figure 2, contact the local Emerson Process Management representative for more
information.
Use the following bolt installation procedure:
1. Carbon steel bolts do not require lubrication and the stainless steel bolts are coated with
a lubricant to ease installation. However, no additional lubricant should be applied when
installing either type of bolt.
2. Finger-tighten the bolts.
3. Torque the bolts to the initial torque value using a crossing pattern. See Figure 2 for initial
torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See Figure 2
for final torque value.
5. Verify that the flange bolts are protruding through the isolator plate before applying
pressure.
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
STEP 1 CONTINUED...
Figure 2. Torque values for the flange and flange adapter bolts
Bolt Material
Head Markings
Initial Torque Final Torque
Carbon Steel (CS)
300 in.-lbs.
650 in.-lbs.
150 in.-lbs.
300 in.-lbs.
B7M
Stainless Steel (SST)
316
B8M
316
R
STM
316
316
SW
316
D. O-rings with Flange Adapters
WARNING
Failure to install proper flange adapter O-rings may cause process leaks, which can result in death or
serious injury. The two flange adapters are distinguished by unique O-ring grooves. Only use the O-ring
that is designed for its specific flange adapter, as shown below.
Rosemount 3051S / 3051 / 2051 / 3095
Flange Adapter
O-ring
PTFE Based
Elastomer
Rosemount 1151
Flange Adapter
O-ring
PTFE
Elastomer
Whenever the flanges or adapters are removed, visually inspect the o-rings. Replace them if
there are any signs of damage, such as nicks or cuts. If you replace the o-rings, re-torque
the flange bolts and alignment screws after installation to compensate for seating of the
PTFE o-ring.
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00825-0100-4101, Rev EA
June 2010
Rosemount 2051
E. Inline Gage Transmitter Orientation
The low side pressure port (atmospheric reference) on the inline gage transmitter is located
in the neck of the transmitter, behind the housing. The vent path is 360° around the
transmitter between the housing and sensor. (See Figure 3.)
Keep the vent path free of any obstruction, including but not limited to paint, dust, and
lubrication by mounting the transmitter so that the contaminants can drain away.
Figure 3. Inline Gage Transmitter
Low side pressure port
(atmospheric reference)
STEP 2: CONSIDER HOUSING ROTATION
To improve field access to wiring or to better view the optional LCD display:
1. Loosen the housing rotation set screw.
2. First rotate the housing clockwise to the desired location. If
the desired location cannot be achieved due to thread limit,
rotate the housing counter clockwise to the desired location
(up to 360° from thread limit).
3. Retighten the housing rotation set screw.
Housing Rotation Set Screw
(5/64-inch)
STEP 3: SET THE JUMPERS
If alarm and security jumpers are not installed, the transmitter will operate normally with the
default alarm condition alarm high and the security off.
1. If the transmitter is installed, secure the loop, and remove power.
2. Remove the housing cover opposite the field terminal side. Do not remove the
instrument cover in explosive atmospheres when the circuit is live.
3. Reposition the jumper. Avoid contact with the leads and the terminals. See Figure 4 for
the location of the jumper and the ON and OFF positions.
4. Reattach the transmitter cover. The cover must be fully engaged to comply with
explosion-proof requirements.
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00825-0100-4101, Rev EA
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Rosemount 2051
Figure 4. 2051 Transmitter Electronics Board
4-20 mA HART
Without LCD Meter
With LCD Display
Alarm
Security
1-5 Vdc HART Low Power
Without LCD Meter
With LCD Display
Alarm
Security
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Quick Installation Guide
00825-0100-4101, Rev EA
June 2010
Rosemount 2051
STEP 4: CONNECT THE WIRING AND POWER
Use the following steps to wire the transmitter:
1. Remove the housing cover on the FIELD TERMINALS side.
2. Connect the positive lead to the “+” terminal (PWR/COMM) and the negative lead to the
“–” terminal.
Figure 5. 4–20 mA HART Transmitter Wiring Diagrams
Power
Supply
RL 250
Figure 6. 1-5 Vdc HART Low Power Transmitter Wiring
Power
Supply
Voltmeter
Installation of the transient protection terminal block does not provide transient protection unless the 2051
case is properly grounded.
3. Ensure proper grounding. It is important that the instrument cable shield:
• be trimmed close and insulated from touching the transmitter housing.
• be connected to the next shield if cable is routed through a junction box.
• be connected to a good earth ground at the power supply end.
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00825-0100-4101, Rev EA
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Rosemount 2051
Figure 7. Wiring
Trim shield and insulate
DP
Insulate Shield
Connect Shield Back
to the Power Supply
Ground
NOTE
Do not connect the powered signal wiring to the test terminals. Power could damage the test
diode in the test connection. Shielded twisted pair cable should be used for best results. Use
24 AWG or larger wire and do not exceed 5,000 feet (1500 meters).
4. Plug and seal unused conduit connections.
5. If applicable, install wiring with a drip loop. Arrange the drip loop so the bottom is lower
than the conduit connections and the transmitter housing.
6. Replace the housing cover.
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Rosemount 2051
Power Supply for 4-20 mA HART
Transmitter operates on 10.5 - 42.4 Vdc. The dc power supply should provide power with
less than two percent ripple.
Figure 8. Load Limitation
Maximum Loop Resistance = 43.5 * (Power Supply Voltage – 10.5)
Load (Ohms)
1387
1000
500
Operating
Region
0
10.5
20
30
Voltage (V dc)
42.4
The Field Communicator requires a minimum loop resistance of 250 for communication.
The total resistance load is the sum of the resistance of the signal leads and the load
resistance of the controller, indicator, and related pieces. Note that the resistance of intrinsic
safety barriers, if used, must be included.
Power Supply for 1-5 Vdc HART Low Power
Low power transmitters operate on 9–28 Vdc. The dc power supply should provide power
with less than two percent ripple. The Vout load should be 100 kW or greater.
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Quick Installation Guide
Rosemount 2051
00825-0100-4101, Rev EA
June 2010
STEP 5: VERIFY CONFIGURATION
NOTE:
A check (P) indicates the basic configuration parameters. At minimum, these parameters
should be verified as part of the configuration and startup procedure.






12
Table 1. Field Communicator Fast Key Sequence
Function
4-20 mA HART
Alarm and Saturation Levels
1, 4, 2, 7
Analog Output Alarm Type
1, 4, 3, 2, 4
Burst Mode Control
1, 4, 3, 3, 3
Burst Operation
1, 4, 3, 3, 4
Custom Meter Configuration
1, 3, 7, 2
Custom Meter Value
1, 4, 3, 4, 3
Damping
1, 3, 6
Date
1, 3, 4, 1
Descriptor
1, 3, 4, 2
Digital To Analog Trim (4-20 mA Output)
1, 2, 3, 2, 1
Disable Local Span/Zero Adjustment
1, 4, 4, 1, 7
Field Device Information
1, 4, 4, 1
Full Trim
1, 2, 3, 3
Keypad Input – Rerange
1, 2, 3, 1, 1
Local Zero and Span Control
1, 4, 4, 1, 7
Loop Test
1, 2, 2
Lower Sensor Trim
1, 2, 3, 3, 2
Message
1, 3, 4, 3
Meter Options
1, 4, 3, 4
Number of Requested Preambles
1, 4, 3, 3, 2
Poll Address
1, 4, 3, 3, 1
Poll a Multidropped Transmitter
Left Arrow, 4, 1, 1
Range Values
1, 3, 3
Rerange
1, 2, 3, 1
Scaled D/A Trim (4–20 mA Output)
1, 2, 3, 2, 2
Self Test (Transmitter)
1, 2, 1, 1
Sensor Info
1, 4, 4, 2
Sensor Temperature
1, 1, 4
Sensor Trim Points
1, 2, 3, 3, 4
Status
1, 2, 1, 2
Tag
1, 3, 1
Transfer Function (Setting Output Type)
1, 3, 5
Transmitter Security (Write Protect)
1, 3, 4, 4
Trim Analog Output
1, 2, 3, 2
Units (Process Variable)
1, 3, 2
Upper Sensor Trim
1, 2, 3, 3, 3
Zero Trim
1, 2, 3, 3, 1
1-5 Vdc HART Low Power
N/A
1, 4, 3, 2, 4
1, 4, 3, 3, 3
1, 4, 3, 3, 4
N/A
N/A
1, 3, 6
1, 3, 4, 1
1, 3, 4, 2
1, 2, 3, 2, 1
1, 4, 4, 1, 7
1, 4, 4, 1
1, 2, 3, 3
1, 2, 3, 1, 1
1, 4, 4, 1, 7
1, 2, 2
1, 2, 3, 3, 2
1, 3, 4, 3
N/A
1, 4, 3, 3, 2
1, 4, 3, 3, 1
Left Arrow, 4, 1, 1
1, 3, 3
1, 2, 3, 1
1, 2, 3, 2, 2
1, 2, 1, 1
1, 4, 4, 2
1, 1, 4
1, 2, 3, 3, 4
1, 2, 1, 2
1, 3, 1
1, 3, 5
1, 3, 4, 4
1, 2, 3, 2
1, 3, 2
1, 2, 3, 3, 3
1, 2, 3, 3, 1
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June 2010
Rosemount 2051
STEP 6: TRIM THE TRANSMITTER
NOTE
Transmitters are shipped fully calibrated per request or by the factory default of full scale
(span = upper range limit).
Zero Trim
A zero trim is a single-point adjustment used for compensating mounting position effects.
When performing a zero trim, ensure that the equalizing valve is open and all wet legs are
filled to the correct level.
There are two methods to compensate for mounting effects:
• Field Communicator
• Transmitter Zero Adjustment Buttons
Select the appropriate method and follow instructions below.
Using the Field Communicator
If zero offset is within 3% of URL, follow the “Using the Field Communicator” instructions
below. This zero trim will affect the 4-20 mA value, the HART PV, and the display value.
HART Fast Keys
1, 2, 3, 3, 2
Steps
1. Equalize or vent the transmitter and connect Fieldbus communicator.
2. At the menu, input the Fast Key sequence.
3. Follow the commands to perform a zero trim.
Using the Transmitter Zero Adjustment Buttons
Using the Transmitter Zero Adjustment Buttons, the Lower Range Value (LRV) will be set to
the pressure applied to the transmitter. This adjustment will affect the 4-20 mA value only.
Perform the following steps to perform a rerange using the zero adjustment buttons.
1. Loosen the certifications label screw and slide the label to expose the zero adjustment
buttons. See Figure 9.
2. Set the 4 mA point by pressing the zero button for 2 seconds. Verify that the output is 4
mA. The optional LCD will display ZERO PASS.
Figure 9. Zero and Span buttons
Span
Zero
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00825-0100-4101, Rev EA
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Rosemount 2051
SAFETY INSTRUMENTED SYSTEMS
The following section applies to 2051 transmitters used in SIS applications.
NOTE
Transmitter output is not safety-rated during the following: configuration changes, multidrop,
loop test. Alternative means should be used to ensure process safety during transmitter
configuration and maintenance activities.
DCS or safety logic solver must be configured to match transmitter configuration. Figure 10
identifies the two alarm level available and their operation values. Position the alarm switch
to the required HI or LO alarm position.
Installation
No special installation is required in addition to the standard installation practices outlined in
this document. Always ensure a proper seal by installing the electronics housing cover(s) so
that metal contacts metal.
The loop must be designed so the terminal voltage does not drop below 10.5 Vdc when the
transmitter output is 22.5 mA.
Position the security switch to the “ON” position to prevent accidental or deliberate change
of configuration data during normal operation.
Configuration
Use any HART-compliant master to communicate with and verify configuration of the 2051.
User-selected damping will affect the transmitters ability to respond to changes in the
applied process. The damping value + response time must not exceed the loop
requirements.
Figure 10. Alarm Levels
Rosemount Alarm Level
Normal Operation
3.75
4 mA
mA(1) 3.9 mA
low saturation
20 mA
20.8 mA
high saturation
21.75(2)
Namur Alarm Level
Normal Operation
3.6 mA(1)
3.8 mA
low saturation
4 mA
20 mA
20.5 mA
high saturation
22.5(2)
(1) Transmitter Failure, hardware alarm in LO position.
(2) Transmitter Failure, hardware alarm in HI position.
NOTE
Some detected faults are indicated on the analog output at a level above high alarm
regardless of the alarm switch selection.
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Rosemount 2051
Operation and Maintenance
Proof Test and Inspection
The following proof tests are recommended. Proof test results and corrective actions taken
must be documented at
www.emersonprocess.com/rosemount/safety/certtechdocumentation.htm in the event that
an error is found in the safety functionality.
Use "Table 1: Field Communicator Fast Key Sequence" to perform a Loop Test, Analog
Output Trim, or Sensor Trim. See the 2051 reference manual (00809-0100-4101) for
additional information.
Proof Test
This proof test will detect 99% of DU failures not detected by the 2051
automatic diagnostics.
1. Conduct a Loop Test. On HART host/communicator enter the Fast Key
Sequence 1, 2, 2.
a. Enter the milliampere value representing a high alarm state
b. Check the reference meter to verify the mA output corresponds to the entered value.
c. Enter the milliampere value representing a low alarm state
d. Check the reference meter to verify the mA output corresponds to the entered value.
2. Perform a minimum two point sensor calibration check using the 4-20mA range points
as the calibration points.
a. If necessary, use one of the “Trim” procedures available in the 2051 reference manual
to calibrate.
NOTE
The user determines the proof-test requirements for impulse piping.
Visual Inspection
Not required.
Special Tools
Not required
Product Repair
All failures detected by the transmitter diagnostics or by the proof-test must be reported.
Feedback can be submitted electronically at
www.emersonprocess.com/rosemount/safety/certtechdocumentation.htm.
The 2051 is repairable by major component replacement. Follow the instructions in the 2051
reference manual (document number 00809-0100-4101) for additional information.
Reference
Specifications
The 2051 must be operated in accordance to the functional and performance specifications
provided in the 2051 reference manual.
Failure Rate Data
The FMEDA report includes failure rates and common cause Beta factor estimates. This
report is available at www.emersonprocess.com/rosemount.
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Rosemount 2051
00825-0100-4101, Rev EA
June 2010
2051 Safety Failure Values
Safety accuracy: 2%(1)
Safety response time- 1.5 sec
Product Life
50 years – based on worst case component wear-out mechanisms – not based on wear-out
process wetted materials
PRODUCT CERTIFICATIONS
Approved Manufacturing Locations
Emerson Process Management - Rosemount Inc. — Chanhassen, Minnesota, USA
Emerson Process Management — Wessling, Germany
Emerson Process Management Asia Pacific Private Limited — Singapore
Emerson Process Management — Beijing, China
Emerson Process Management — Daman, India
European Directive Information
The EC declaration of conformity can be found on page 20. The most recent revision can be
found at www.emersonprocess.com.
Ordinary Location Certification for Factory Mutual
As standard, the transmitter has been examined and tested to determine that the design
meets basic electrical, mechanical, and fire protection requirements by FM, a nationally
recognized testing laboratory (NRTL) as accredited by the Federal Occupational Safety and
Health Administration (OSHA).
(1) A 2% variation of the transmitter mA output is allowed before a safety trip. Trip values in the DCS or Safety
Logic Solver should be derated by 2%.
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Rosemount 2051
HART Protocol
Hazardous Locations Certifications
North American Certifications
FM Approvals
E5 Explosion-Proof for Class I, Division 1, Groups B, C, and D. Dust-Ignition-Proof for
Class II, Division 1, Groups E, F, and G. Dust-Ignition-Proof for Class III, Division 1.
T5 (Ta = 85 °C), Factory Sealed, Enclosure Type 4X
I5 Intrinsically Safe for use in Class I, Division 1, Groups A, B, C, and D; Class II, Division
1, Groups E, F, and G; Class III, Division 1 when connected per Rosemount drawing
02051-1009; Non-incendive for Class I, Division 2, Groups A, B, C, and D.
Temperature Code:T4 (Ta = 70 °C),
Enclosure Type 4X
For input parameters see control drawing 02051-1009.
Canadian Standards Association (CSA)
All CSA hazardous approved transmitters are certified per ANSI/ISA 12.27.01-2003.
E6 Explosion-Proof for Class I, Division 1, Groups B, C, and D. Dust-Ignition-Proof for
Class II and Class III, Division 1, Groups E, F, and G. Suitable for Class I, Division 2
Groups A, B, C, and D for indoor and outdoor hazardous locations. Class I Zone 1 Ex d
IIC T5. Enclosure type 4X, factory sealed. Single Seal.
I6 Intrinsically safe approval. Intrinsically safe for Class I, Division 1, Groups A, B, C, and D
when connected in accordance with Rosemount drawing 02051-1008. Temperature
Code T3C. Class I Zone 1 Ex ia IIC T3C. Single Seal.
European Certifications
I1 ATEX Intrinsic Safety
Certification No. Baseefa08ATEX0129X
Ex ia IIC T4 (–60  Ta  +70 °C)
IP66 IP68
1180
II 1 G
Table 2. Input Parameters for 4-20 mA
Ui = 30V
Ii = 200 mA
Pi = 1.0W
Ci = 0.012 µF
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the apparatus is not
capable of withstanding the 500V insulation test required by Clause 6.3.12 of
EN60079-11. This must be taken into account when installing the apparatus.
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Rosemount 2051
N1 ATEX Type n
Certification No. Baseefa08ATEX0130X
Ex nAnL IIC T4 (–40  Ta  +70 °C)
Ui = 42.4 Vdc max
IP66
II 3 G
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the apparatus is not
capable of withstanding a 500V r.m.s. test to case. This must be taken into account on
any installation in which it is used, for example by assuring that the supply to the
apparatus is galvanically isolated.
E1 ATEX Flame-Proof
Certification No. KEMA 08ATEX0090 X
II 1/2 G
Ex d IIC T6 (–50  Ta  65 °C)
Ex d IIC T5 (–50  Ta  80 °C)
IP66
1180
Vmax = 42.4 V dc
Special Conditions for Safe Use (X):
1. Appropriate ex d blanking plugs, cable glands, and wiring needs to be suitable for a
temperature of 90 °C.
2. This device contains a thin wall diaphragm. Installation, maintenance and use shall
take into account the environmental conditions to which the diaphragm will be
subjected. The manufacturer’s instructions for maintenance shall be followed in
detail to assure safety during its expected lifetime.
3. The 2051 does not comply with the requirements of IEC 60079-1 Clause 5 for
flameproof joints. Contact Emerson Process Management for information on the
dimensions of flameproof joints.
ND ATEX Dust
Certification No. Baseefa08ATEX0182X
II 1 D
Dust Rating: Ex tD A20 T115 °C (–20  Ta  85 °C)
Vmax = 42.4 V dc
A = 22 mA
1180
Special Conditions for Safe Use (X):
1. The user must ensure that the maximum rated voltage and current (42.4 volts, 22
milliampere, DC) are not exceeded. All connections to other apparatus or
associated apparatus shall have control over this voltage and current equivalent to
a category “ib” circuit according to EN 60079-1.
2. Cable entries must be used which maintain the ingress protection of the enclosure
to at least IP66.
3. Unused cable entries must be filled with suitable blanking plugs which maintain the
ingress protection of the enclosure to at least IP66.
4. Cable entries and blanking plugs must be suitable for the ambient range of the
apparatus and capable of withstanding a 7J impact test.
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Rosemount 2051
IECEx Certifications
I7 IECEx Intrinsic Safety
Certification No. IECExBAS08.0045X
Ex ia IIC T4 (–60  Ta  +70 °C)
1180
Table 3. Input Parameters
Ui = 30V
Ii = 200 mA
Pi = 1.0W
Ci = 0.012 µF
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the apparatus is not
capable of withstanding the 500V insulation test required by Clause 6.3.12 of
IEC60079-11. This must be taken into account when installing the apparatus.
E7 IECEx Explosion-Proof (Flame-Proof)
Certification No. IECExKEM08.0024X
Ex d IIC T6 (–50  Ta  65 °C)
Ex d IIC T5 (–50  Ta  80 °C)
1180
Vmax = 42.4 V dc
Special Conditions for Safe Use (X):
1. Appropriate ex d blanking plugs, cable glands, and wiring needs to be suitable for a
temperature of 90 °C.
2. This device contains a thin wall diaphragm. Installation, maintenance and use shall
take into account the environmental conditions to which the diaphragm will be
subjected. The manufacturer’s instructions for maintenance shall be followed in
detail to assure safety during its expected lifetime.
3. The 2051 does not comply with the requirements of IEC 60079-1 Clause 5 for
flameproof joints. Contact Emerson Process Management for information on the
dimensions of flameproof joints.
N7 IECEx Type n
Certification No. IECExBAS08.0046X
Ex nAnL IIC T4 (–40  Ta  +70 °C)
Ui = 42.4 Vdc max
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the apparatus is not
capable of withstanding a 500V r.m.s. test to case. This must be taken into account on
any installation in which it is used, for example by assuring that the supply to the
apparatus is galvanically isolated.
19
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Rosemount 2051
00825-0100-4101, Rev EA
June 2010
TIIS Certifications
E4 TIIS Flame-Proof
Ex d IIC T6
Inmetro Certifications
E2 Flame-Proof
BR-Ex d IIC T6/T5
I2 Intrinsic Safety
BR-Ex ia IIC T4
GOST (Russia) Certifications
IM Intrinsic Safety
Ex ia IIC T4
EM Flame-Proof
Ex d IIC T5/T6
China (NEPSI) Certifications
E3 Flame-Proof
Certificate No: GYJ081230
Ex d IIC T5/T6
I3 Intrinsic Safety
Certificate No: GYJ081231X
Ex ia IIC T4
Loop / Power
Ui = 30V
Ui = 17.5 V
Ii = 300 mA
Ii = 380 mA
Pi = 1.0 W
Pi = 1.3 W
Pi = 5.32 W
Ci = 0.012 µF
Ci = 0
Li = 0
Li = 10 µH
CCoE Certifications
EW Flame-Proof
Ex d IIC T5 or T6
IW Intrinsic Safety
Ex ia IIC T4
20
Groups
HART / FOUNDATION fieldbus / Remote Display / Quick Connect /
HART Diagnostics
FISCO
HART / FOUNDATION fieldbus / Remote Display / Quick Connect /
HART Diagnostics
FISCO
HART / Remote Display / Quick Connect / HART Diagnostics
FOUNDATION fieldbus
FISCO
HART
FOUNDATION fieldbus / FISCO
FOUNDATION fieldbus
HART
4101_QIG_RevEA.fm Page 21 Tuesday, June 29, 2010 9:26 AM
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00825-0100-4101, Rev EA
June 2010
Rosemount 2051
Combinations of Certifications
Stainless steel certification tag is provided when optional approval is specified. Once a
device labeled with multiple approval types is installed, it should not be reinstalled using any
other approval types. Permanently mark the approval label to distinguish it from unused
approval types.
K1
E1, I1, N1, and ND combination
K4
E4 and I4 combination
K5
E5 and I5 combination
K6
I6 and E6 combination
K7
E7, I7, and N7 combination
KA
E1, I1, E6, and I6 combination
KB
E5, I5, E6, and I6 combination
KC
E1, I1, E5, and I5 combination
KD
E1, I1, E5, I5, E6, and I6 combination
21
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22
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June 2010
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June 2010
Rosemount 2051
23
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Rosemount 2051
24
00825-0100-4101, Rev EA
June 2010
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051 Pressure Transmitter
with 4-20 mA HART and 1-5 Vdc Low Power Protocol
www.rosemount.com
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Rosemount 2051 Pressure
Transmitter
NOTICE
Read this manual before working with the
product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.
For technical assistance, contacts are listed below:
Customer Central
Technical support, quoting, and order-related questions.
United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)
Asia Pacific- 65 777 8211
Europe/ Middle East/ Africa - 49 (8153) 9390
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Emerson Process Management representative.
The products described in this document are NOT designed for nuclear-qualified
applications. Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Emerson
Process Management Sales Representative.
.
.
.
.
.
www.rosemount.com
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Table of Contents
SECTION 1
Introduction
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2
Installation
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mechanical Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
HART Installation Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Impulse Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Process Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Housing Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Configure Security and Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Conduit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Transient Protection Terminal Block . . . . . . . . . . . . . . . . . . . . . . 2-28
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Rosemount 305, 306 and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . 2-31
Rosemount 305 Integral Manifold Installation Procedure . . . . . . 2-32
Rosemount 306 Integral Manifold Installation Procedure . . . . . . 2-32
Rosemount 304 Conventional Manifold Installation Procedure. . 2-32
Integral Manifold Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Liquid Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Open Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Closed Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
SECTION 3
Configuration
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Loop to Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Data Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HART Communicator Menu Trees . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fast Key Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Process Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Set Process Variable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-1
1-2
1-3
3-1
3-1
3-1
3-2
3-2
3-3
3-4
3-5
3-7
3-8
3-8
3-8
3-9
3-9
TOC-1
Reference Manual
Rosemount 2051
00809-0100-4101, Rev AA
July 2008
Set Output (Transfer function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rerange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
LCD Display Configuration for 4-20 mA HART only . . . . . . . . . . . 3-15
Custom Display Configuration 4-20 mA HART only . . . . . . . . . . . 3-15
Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Failure Mode Alarm and Saturation . . . . . . . . . . . . . . . . . . . . . . . 3-16
Alarm and Saturation Levels for Burst Mode . . . . . . . . . . . . . . . . 3-17
Alarm and Saturation Values for Multidrop Mode. . . . . . . . . . . . . 3-17
Alarm Level Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Transmitter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Loop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Advanced Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Saving, Recalling, and Cloning Configuration Data . . . . . . . . . . . 3-20
Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Changing a Transmitter Address . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Communicating with a Multidropped Transmitter . . . . . . . . . . . . . 3-24
Polling a Multidropped Transmitter. . . . . . . . . . . . . . . . . . . . . . . . 3-24
SECTION 4
Operation and
Maintenance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Determining Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Choosing a Trim Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Analog Output Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Digital-to-Analog Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Digital-to-Analog Trim Using Other Scale. . . . . . . . . . . . . . . . . . . . 4-8
Recall Factory Trim—Analog Output . . . . . . . . . . . . . . . . . . . . . . . 4-9
Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Sensor Trim Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Zero Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Recall Factory Trim—Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Compensating for Line Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
SECTION 5
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Warnings () . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Diagnostic Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Remove from Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Remove Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Remove the Electronics Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Remove the Sensor Module from the Electronics Housing . . . . . . 5-9
Reassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Attach the Electronics Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Install the Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Reassemble the 2051C Process Flange . . . . . . . . . . . . . . . . . . . 5-10
Install the Drain/Vent Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
TOC-2
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
APPENDIX A
Reference Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Conformance To Specification (±3s (Sigma)). . . . . . . . . . . . . . . . . A-1
Reference Accuracy(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Long Term Stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Dynamic Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Line Pressure Effect per 1000 psi (6,9 MPa) . . . . . . . . . . . . . . . . . A-2
Ambient Temperature Effect per 50°F (28°C) . . . . . . . . . . . . . . . . A-3
Mounting Position Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Vibration Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Power Supply Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Electromagnetic Compatibility (EMC). . . . . . . . . . . . . . . . . . . . . . . A-3
Transient Protection (Option Code T1). . . . . . . . . . . . . . . . . . . . . . A-3
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Range and Sensor Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Protocols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Overpressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Static Pressure Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Burst Pressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Temperature Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Humidity Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Volumetric Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Failure Mode Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051C Process Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051T Process Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051L Process Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Non-Wetted Parts for 2051C/T/L . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Shipping Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-22
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-25
APPENDIX B
Approval Information
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-1
European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
HART Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . B-2
Approval Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Factory Mutual (FM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Canadian Standards Association (CSA). . . . . . . . . . . . . . . . . . . . B-21
APPENDIX C
Glossary
Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 to C-2
TOC-3
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Rosemount 2051
TOC-4
00809-0100-4101, Rev AA
July 2008
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Section 1
Introduction
USING THIS MANUAL
The sections in this manual provide information on installing, operating, and
maintaining Rosemount 2051 pressure transmitters with HART® protocol. The
sections are organized as follows:
SERVICE SUPPORT
•
Section 2: Installation contains mechanical and electrical installation
instructions, and field upgrade options.
•
Section 3: Configuration provides instruction on commissioning and
operating Rosemount 2051 transmitters. Information on software
functions, configuration parameters, and online variables is also
included.
•
Section 4: Operation and Maintenance contains operation and
maintenance techniques.
•
Section 5: Troubleshooting provides troubleshooting techniques for
the most common operating problems.
•
Appendix A: Reference Data supplies reference and specification
data, as well as ordering information.
•
Appendix B: Approval Information contains intrinsic safety approval
information, European ATEX directive information, and
approval drawings.
•
Appendix C: Glossary
To expedite the return process outside of the United States, contact the
nearest Emerson Process Management representative.
Within the United States, call the Emerson Process Management Instrument
and Valves Response Center using the 1-800-654-RSMT (7768) toll-free
number. This center, available 24 hours a day, will assist you with any needed
information or materials.
The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
process material to which the product was last exposed.
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of and understand the hazard. If the product being returned was exposed to a
hazardous substance as defined by OSHA, a copy of the required Material Safety Data Sheet
(MSDS) for each hazardous substance identified must be included with the returned goods.
Emerson Process Management Instrument and Valves Response Center
representatives will explain the additional information and procedures
necessary to return goods exposed to hazardous substances.
www.rosemount.com
Reference Manual
Rosemount 2051
MODELS COVERED
00809-0100-4101, Rev AA
July 2008
The following Rosemount 2051 Pressure Transmitters are covered by this
manual:
Rosemount 2051C Coplanar™ Pressure Transmitter
2051CD - Differential Pressure Transmitter
Measures differential pressure up to 2000 psi (137,9 bar)
2051CG - Gage Pressure Transmitter
Measures gage pressure up to 2000 psi (137,9 bar)
Rosemount 2051T In-Line Pressure Transmitter
2051TG - Gage Pressure Transmitter
Measures gage pressure up to 10000 psi (689,5 bar)
2051TA - Absolute Pressure Transmitter
Measures absolute pressure up to 10000 psi (689,5 bar)
Rosemount 2051L Liquid Level Pressure Transmitter
2051L - Flange-Mounted Liquid Level Transmitter
Provides precise level and specific gravity measurements up to 300 psi
(20,7 bar) for a wide variety of tank configurations
1-2
Reference Manual
00809-0100-4101, Rev AA
July 2008
TRANSMITTER
OVERVIEW
Rosemount 2051
The Rosemount 2051C Coplanar design is offered for Differential Pressure
(DP) and Gage Pressure (GP) measurements where it utilizes Emerson
Process Management capacitance sensor technology. Piezoresistive sensor
technology is utilized in the Rosemount 2051T measurements.
The major components of the Rosemount 2051C are the sensor module and
the electronics housing. The sensor module contains the oil filled sensor
system (isolating diaphragms, oil fill system, and sensor) and the sensor
electronics. The sensor electronics are installed within the sensor module and
include a temperature sensor (RTD), a memory module, and the capacitance
to digital signal converter (C/D converter). The electrical signals from the
sensor module are transmitted to the output electronics in the electronics
housing. The electronics housing contains the output electronics board, the
local zero and span buttons, and the terminal block. The basic block diagram
of the Rosemount 2051CD is illustrated in Figure 1-1.
For the Rosemount 2051C design, pressure is applied to the isolating
diaphragms, the oil deflects the center diaphragm, which then changes the
capacitance. This capacitance signal is then changed to a digital signal in the
C/D converter. The microprocessor then takes the signals from the RTD and
C/D converter calculates the correct output of the transmitter. This signal is
then sent to the D/A converter, which converts the signal back to an analog
signal and superimposes the HART signal on the 4-20 mA output.
Figure 1-1. Block diagram of
operation
Sensor Module
Electronics Board
4—20 mA Signal
to Control System
Signal Processing
Temp.
Sensor
Sensor Module
Memory
Microcomputer
• Sensor linearization
• Rerange
• Damping
• Diagnostics
• Engineering
• Communication
Module Memory
• Rerange values
• Configuration
Digital-toAnalog Signal
Conversion
Digital
Communication
Local Span
and Zero
Adjustment
(optional)
HART Communicator
1-3
Reference Manual
Rosemount 2051
1-4
00809-0100-4101, Rev AA
July 2008
Reference Manual
00809-0100-4101, Rev AA
July 2008
Section 2
Rosemount 2051
Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . page 2-3
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . page 2-3
HART Installation Flowchart . . . . . . . . . . . . . . . . . . . . . . . page 2-4
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-5
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . page 2-5
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-25
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . page 2-31
Rosemount 305, 306 and 304 Manifolds . . . . . . . . . . . . . . page 2-31
Liquid Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . page 2-35
OVERVIEW
The information in this section covers installation considerations for the
Rosemount 2051 with HART protocols. A Quick Installation Guide for HART
protocol (document number 00825-0100-4101) is shipped with every
transmitter to describe basic pipe-fitting and wiring procedures for initial
installation. Dimensional drawings for each 2051 variation and mounting
configuration are included on page 2-5.
HART Communicator and AMS Device Manager instructions are given to
perform configuration functions. For convenience, HART Communicator fast
key sequences are labeled “Fast Keys” for each software function below the
appropriate headings.
SAFETY MESSAGES
www.rosemount.com
Procedures and instructions in this section may require special precautions to
ensure the safety of the personnel performing the operation. Information that
raises potential safety issues is indicated with a warning symbol (
). Refer
to the following safety messages before performing an operation preceded by
this symbol.
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Warnings
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. Please review the
approvals section of the 2051 reference manual for any restrictions associated with a safe
installation.
• Before connecting a HART communicator in an explosive atmosphere, ensure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers when
power is applied to the unit.
Process leaks may cause harm or result in death.
• Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
Electrical shock can result in death or serious injury.
•
Avoid contact with the leads and terminals.
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.
Replacement equipment or spare parts not approved by Emerson Process
Management 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 Process Management as spare
parts.
•
Refer to page A-25 for a complete list of spare parts.
Improper assembly of manifolds to traditional flange can damage sensor module.
•
GENERAL
CONSIDERATIONS
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.
Measurement accuracy depends upon proper installation of the transmitter
and impulse piping. Mount the transmitter close to the process and use a
minimum of piping to achieve best accuracy. Also, consider the need for easy
access, personnel safety, practical field calibration, and a suitable transmitter
environment. Install the transmitter to minimize vibration, shock, and
temperature fluctuation.
IMPORTANT
Install the enclosed pipe plug (found in the box) in unused conduit opening
with a minimum of five threads engaged to comply with explosion-proof
requirements.
For material compatibility considerations, see document number
00816-0100-3045 on www.emersonprocess.com/rosemount.
2-2
Reference Manual
00809-0100-4101, Rev AA
July 2008
MECHANICAL
CONSIDERATIONS
Rosemount 2051
NOTE
For steam service or for applications with process temperatures greater than
the limits of the transmitter, do not blow down impulse piping through the
transmitter. Flush lines with the blocking valves closed and refill lines with
water before resuming measurement.
NOTE
When the transmitter is mounted on its side, position the Coplanar flange to
ensure proper venting or draining. Mount the flange as shown in Figure 2-8 on
page 2-18, keeping drain/vent connections on the bottom for gas service and
on the top for liquid service.
ENVIRONMENTAL
CONSIDERATIONS
Best practice is to mount the transmitter in an environment that has minimal
ambient temperature change. The transmitter electronics temperature
operating limits are –40 to 185 °F (–40 to 85 °C). Refer to Appendix A:
Reference Data that lists the sensing element operating limits. Mount the
transmitter so that it is not susceptible to vibration and mechanical shock and
does not have external contact with corrosive materials.
2-3
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
HART INSTALLATION
FLOWCHART
Figure 2-1. HART Installation
Flowchart
START HERE
Bench
Calibration?
No
Field Install
Yes
Configure
Set Units
(page 3-9)
Configure
Security and
Alarm
(page 2-23)
Verify
Mount
Transmitter
(page 2-12)
Review
Transmitter
Configuration
(page 3-4)
Wire Transmitter
(pages 2-26–2-31)
Set Range
Points
(page 3-10)
Apply Pressure
Power
Transmitter
(page 2-27)
Set Output
Type
(page 3-9)
Set Damping
(page 3-13)
Within
Specifications
?
Yes
Check Process
Connection
(page 2-19)
No
Refer to
Section 4:
Operation and
Maintenance
Confirm
Transmitter
Configuration
(page 3-4)
Trim Transmitter
for Mounting
Effects
(page 4-10)
Done
2-4
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
INSTALLATION
PROCEDURES
Dimensional Drawings
2051C Coplanar Flange Dimensional Drawing
5.00 (127)
4.36 (111)
3.85 (98)
7.03 (179)
6.40 (163)
2051C Coplanar with Rosemount 305 Coplanar Integral Manifold
5.00 (127)
3.85 (98)
4.36 (111)
6.19
(157)
7.44
(189)
Drain/ Vent
Valve
5.50 (140)
MAX OPEN
10.60 (270)
MAX OPEN
2-5
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Coplanar Flange Mounting Configurations with
Optional Bracket (B4) for 2-in. Pipe or Panel Mounting
2.82
(72)
4.36
(111)
2.8 (71)
PANEL MOUNTING
2.18
(55)
7.03
(179)
6.15
(156)
5
/16 ⫻ 11/2 Bolts
for Panel Mounting
(Not Supplied)
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
3.4 (85)
2.81
(71)
4.73
(120)
PIPE MOUNTING
2-inch U-Bolt
for Pipe Mounting
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
6.22
(158)
2-6
3.4 (85)
3.51
(89)
Dimensions are in inches (millimeters)
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051C Coplanar with Traditional Flange
5.00 (127)
3.85 (98)
4.36 (111)
7.76
(197)
1
/2 - 14 NPT
Flange
Adapter
(optional)
Drain/
Vent Valve
1.626
(41,3)
1.10 (28)
3.40 (86)
2.126
(54)
1.05 (27)
2051C Coplanar with Rosemount 305 Traditional Integral Manifold
5.00 (127)
3.85 (98)
6.19
(157)
4.36 (111)
1
/2 - 14 NPT
Flange
Adapter
(optional)
Drain/
Vent Valve
1.626
(41,3)
3.75 (95)
MAX OPEN
1.05
(27)
3.50
(89)
1.10
(28)
6.20
(158)
MAX
OPEN
2.126
(54)
8.90
(226)
MAX OPEN
2.70
(69)
MAX
OPEN
2-7
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Traditional Flange Mounting Configurations with
Optional Brackets for 2-in. Pipe or Panel Mounting
Panel Mount (Bracket Option B2 / B8)
Pipe Mount (Bracket Option B3 / B9 / BC)
9.18 (233)
2.62
(67)
6.19
(157)
1.94
(49)
11.51
(292)
3.56
(90)
MAX 4.85
OPEN (123)
5.32
(135)
3.50
(89)
6.19 (157)
Pipe Mount (Bracket Option B1 / B7 / BA)
6.76 (172)
3.56 (90)
MAX OPEN
1.10 (28)
3.50 (89)
2.62 (67)
0.93
(24)
2-8
1.10
(28)
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051T Dimensional Drawings
5.00 (127)
4.36 (111)
3.85 (98)
7.15 (182)
2051T with Rosemount 306 Integral Manifold
3.85 (98)
5.00 (127)
4.36 (111)
7.15
(182)
4.85
(123)
4.10
(105)
6.25
(159)
MAX OPEN
2-9
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051T Typical Mounting Configurations with Optional Mounting Bracket
Pipe Mounting
Panel Mounting
3.85
(98)
5.16 (131)
1.99 (51)
2.81 (71)
6.21
(158)
3.49
(89)
4.72
(120)
6.90
(175)
2-10
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051L Liquid Level
2-in. Flange Configuration (Flush Mount Only)
3- and 4-in. Flange Configuration
3.85
(98)
3.85
(98)
E
D
2-in., 4-in., or
6-in.
Extension
(50.8, 101.6,
152.4)
A
H
Optional Flushing Connection Ring
(Lower Housing)
A
H
5.00
(127) 4.36
(111)
G
6.60
(68)
F
7.02
(178)
E
8.12
(206)
Flushing Connection
Diaphragm Assembly and
Mounting Flange
B
C
2-11
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Table 2-1. 2051L Dimensional Specifications
Except where indicated, dimensions are in inches (millimeters).
Class
ASME B16.5 (ANSI) 150
ASME B16.5 (ANSI) 300
DIN 2501 PN 10–40
DIN 2501 PN 25/40
Pipe
Size
2 (51)
3 (76)
4 (102)
2 (51)
3 (76)
4 (102)
DN 50
DN 80
DN 100
Flange
Thickness A
Bolt Circle
Diameter B
Outside
Diameter C
No. of
Bolts
Bolt Hole
Diameter
Extension
Diameter(1) D
O.D. Gasket
Surface E
0.69 (18)
0.88 (22)
0.88 (22)
0.82 (21)
1.06 (27)
1.19 (30)
20 mm
24 mm
24 mm
4.75 (121)
6.0 (152)
7.5 (191)
5.0 (127)
6.62 (168)
7.88 (200)
125 mm
160 mm
190 mm
6.0 (152)
7.5 (191)
9.0 (229)
6.5 (165)
8.25 (210)
10.0 (254)
165 mm
200 mm
235 mm
4
4
8
8
8
8
4
8
8
0.75 (19)
0.75 (19)
0.75 (19)
0.75 (19)
0.88 (22)
0.88 (22)
18 mm
18 mm
22 mm
NA
2.58 (66)
3.5 (89)
NA
2.58 (66)
3.5 (89)
NA
65 mm
89 mm
3.6 (92)
5.0 (127)
6.2 (158)
3.6 (92)
5.0 (127)
6.2 (158)
4.0 (102)
5.4 (138)
6.2 (158)
Class(1)
ASME B16.5 (ANSI) 150
ASME B16.5 (ANSI) 300
DIN 2501 PN 10–40
DIN 2501 PN 25/40
Lower Housing G
Pipe
Size
Process
Side F
1/4 NPT
1/2 NPT
H
2 (51)
3 (76)
4 (102)
2 (51)
3 (76)
4 (102)
DN 50
DN 80
DN 100
2.12 (54)
3.6 (91)
3.6 (91)
2.12 (54)
3.6 (91)
3.6 (91)
2.4 (61)
3.6 (91)
3.6 (91)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
0.97 (25)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
1.31 (33)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
5.65 (143)
(1) Tolerances are -0.020 and +0.040 (-0,51 and +1,02)
Mount the Transmitter
Process Flange Orientation
Mount the process flanges with sufficient clearance for process connections.
For safety reasons, place the drain/vent valves so the process fluid is directed
away from possible human contact when the vents are used. In addition,
consider the accessibility for a testing or calibration input.
NOTE
Most transmitters are calibrated in the horizontal position. Mounting the
transmitter in any other position will shift the zero point to the equivalent
amount of liquid head pressure caused by the varied mounting position. To
reset zero point, refer to “Sensor Trim” on page 4-5.
Terminal Side of Electronics Housing
Mount the transmitter so the terminal side is accessible. Clearance of 0.75-in.
(19 mm) is required for cover removal. Use a conduit plug on the unused side
of the conduit opening.
Circuit Side of Electronics Housing
Provide 0.75 in. (19 mm) of clearance for units without an LCD display.
Provide 3 in. (76 mm) of clearance for units installed with LCD.
Cover Installation
Always ensure a proper seal by installing the electronics housing covers so
that metal contacts metal. Use Rosemount o-rings.
2-12
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Mounting Brackets
Rosemount 2051 Transmitters may be panel-mounted or pipe-mounted
through an optional mounting bracket. Refer to Table 2-2 for the complete
offering and see Figure 2-2 through Figure 2-5 on pages 2-13 and 2-14 for
dimensions and mounting configurations.
Table 2-2. Mounting Brackets
2051 Brackets
Process Connections
Mounting
Materials
Flat
Option
Pipe Panel Panel
CS
SST
CS
Code Coplanar In-Line Traditional Mount Mount Mount Bracket Bracket Bolts
B4
B1
B2
B3
B7
B8
B9
BA
BC
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SST
Bolts
X
X
X
X
X
X
X
X
X
X
X
Figure 2-2. Mounting Bracket Option Code B4
5
2.8 (71)
/16 ⫻ 11/2 Bolts
for Panel Mounting
(Not Supplied)
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
3.4 (85)
2-13
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Figure 2-3. Mounting Bracket Option Codes B1, B7, and BA
1.63 (41)
3.75 (95)
4.09 (104)
2.73 (69)
4.97
(126)
2.81
(71)
Figure 2-4. Panel Mounting Bracket Option Codes B2 and B8
3.75 (95)
1.63 (41)
Mounting Holes
0.375 Diameter
(10)
4.09 (104)
1.405
(35,7)
1.40
(36)
2.81
(71)
4.5 (114)
1.405
(35,7)
Figure 2-5. Flat Mounting Bracket Option Codes B3 and BC
2.125 (54)
1.625 (41)
8.00 (203)
2.81 (71)
NOTE
Dimensions are in inches (millimeters).
2-14
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Flange Bolts
The 2051 is shipped with a Coplanar flange installed with four 1.75-in. (44
mm) flange bolts. See Figure 2-6 and Figure 2-7 on pages 2-16 and 2-16.
Stainless steel bolts are coated with a lubricant to ease installation. Carbon
steel bolts do not require lubrication. No additional lubricant should be applied
when installing either type of bolt. Bolts are identified by their head markings:
B7M
Carbon Steel (CS) Head Markings
Stainless Steel (SST) Head Markings
316
B8M
F593_*
* The last digit in the F593_ head marking
may be any letter between A and M.
Bolt Installation
Only use bolts supplied with the 2051 or provided by Emerson Process
Management as spare parts. When installing the transmitter to one of the
optional mounting brackets, torque the bolts to 125 in-lb. (0,9 N-m). Use
the following bolt installation procedure:
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
3. Torque the bolts to the final torque value using the same
crossing pattern.
Torque values for the flange and manifold adapter bolts are as follows:
Table 2-3. Bolt Installation
Torque Values
Bolt Material
Initial Torque Value
Final Torque Value
CS-ASTM-A449 Standard
316 SST—Option L4
ASTM-A-193-B7M—Option L5
ASTM-A-193 Class 2, Grade
B8M—Option L8
300 in.-lb (34 N-m)
150 in.-lb (17 N-m)
300 in.-lb (34 N-m)
150 in.-lb (17 N-m)
650 in.-lb (73 N-m)
300 in.-lb (34 N-m)
650 in.-lb (73 N-m)
300 in.-lb (34 N-m)
See “Safety Messages” on page 2-1 for complete warning information.
2-15
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Figure 2-6. Traditional Flange Bolt Configurations
DIFFERENTIAL TRANSMITTER
GAGE TRANSMITTER
Drain/Vent
Plug
Drain/Vent
Drain/Vent
1.75 (44) × 4
NOTE
Dimensions are in inches (millimeters).
1.75 (44) × 4
1.50 (38) × 4
Figure 2-7. Mounting Bolts and Bolt Configurations for Coplanar Flange
TRANSMITTER WITH
FLANGE ADAPTERS AND
FLANGE/ADAPTER BOLTS
TRANSMITTER WITH
FLANGE BOLTS
2.88 (73) × 4
1.75 (44) × 4
Description
Size in. (mm)
Flange Bolts
1.75 (44)
Flange/Adapter Bolts
2.88 (73)
Manifold/Flange Bolts
2.25 (57)
Note: Rosemount 2051T transmitters are direct mount and do not require bolts for process connection.
NOTE
Dimensions are in inches (millimeters).
2-16
1.50 (38) × 2
Reference Manual
00809-0100-4101, Rev AA
July 2008
Impulse Piping
Rosemount 2051
The piping between the process and the transmitter must accurately transfer
the pressure to obtain accurate measurements. There are six possible
sources of impulse piping error: pressure transfer, leaks, friction loss
(particularly if purging is used), trapped gas in a liquid line, liquid in a gas line,
and density variations between the legs.
The best location for the transmitter in relation to the process pipe is
dependent on the process. Use the following guidelines to determine
transmitter location and placement of impulse piping:
•
Keep impulse piping as short as possible.
•
For liquid service, slope the impulse piping at least 1 in./foot (8 cm/m)
upward from the transmitter toward the process connection.
•
For gas service, slope the impulse piping at least 1 in./foot (8 cm/m)
downward from the transmitter toward the process connection.
•
Avoid high points in liquid lines and low points in gas lines.
•
Make sure both impulse legs are the same temperature.
•
Use impulse piping large enough to avoid friction effects and blockage.
•
Vent all gas from liquid piping legs.
•
When using a sealing fluid, fill both piping legs to the same level.
•
When purging, make the purge connection close to the process taps
and purge through equal lengths of the same size pipe. Avoid purging
through the transmitter.
•
Keep corrosive or hot (above 250 °F [121 °C]) process material out of
direct contact with the sensor module and flanges.
•
Prevent sediment deposits in the impulse piping.
•
Maintain equal leg of head pressure on both legs of the impulse piping.
•
Avoid conditions that might allow process fluid to freeze within the
process flange.
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Rosemount 2051
Mounting Requirements
Impulse piping configurations depend on specific measurement conditions.
Refer to Figure 2-8 for examples of the following mounting configurations:
Liquid Flow Measurement
•
Place taps to the side of the line to prevent sediment deposits on the
process isolators.
•
Mount the transmitter beside or below the taps so gases vent into the
process line.
•
Mount drain/vent valve upward to allow gases to vent.
Gas Flow Measurement
•
Place taps in the top or side of the line.
•
Mount the transmitter beside or above the taps so to drain liquid into
the process line.
Steam Flow Measurement
•
Place taps to the side of the line.
•
Mount the transmitter below the taps to ensure that impulse piping will
remain filled with condensate.
•
In steam service above 250 °F (121 °C), fill impulse lines with water to
prevent steam from contacting the transmitter directly and to ensure
accurate measurement start-up.
NOTE
For steam or other elevated temperature services, it is important that
temperatures at the process connection do not exceed the transmitter’s
process temperature limits. See “Process Temperature Limits” on page A-7
for details.
Figure 2-8. Installation
Examples
LIQUID SERVICE
Flo
GAS SERVICE
Flo
w
Flo
2-18
STEAM SERVICE
w
w
Reference Manual
00809-0100-4101, Rev AA
July 2008
Process Connections
Rosemount 2051
Coplanar or Traditional Process Connection
Install and tighten all four flange bolts before applying pressure, or process
leakage will result. When properly installed, the flange bolts will protrude
through the top of the sensor module housing. Do not attempt to loosen or
remove the flange bolts while the transmitter is in service.
Flange Adaptors:
Rosemount 2051DP and GP process connections on the transmitter flanges
are 1/4–18 NPT. Flange adapters are available with standard 1/2–14 NPT Class
2 connections. The flange adapters allow users to disconnect from the
process by removing the flange adapter bolts. Use plant-approved lubricant or
sealant when making the process connections. Refer to Dimensional
Drawings on page 2-5 for the distance between pressure connections. This
distance may be varied ±1/8 in. (3.2 mm) by rotating one or both of the flange
adapters.
To install adapters to a Coplanar flange, perform the following procedure:
1.
Remove the flange bolts.
2.
Leaving the flange in place, move the adapters into position with the
o-ring installed.
3.
Clamp the adapters and the Coplanar flange to the transmitter sensor
module using the larger of the bolts supplied.
4.
Tighten the bolts. Refer to “Flange Bolts” on page 2-15 for torque
specifications.
Whenever you remove flanges or adapters, visually inspect the PTFE o-rings.
Replace with o-ring designed for Rosemount transmitter if there are any signs
of damage, such as nicks or cuts. Undamaged o-rings may be reused. If you
replace the o-rings, retorque the flange bolts after installation to compensate
for cold flow. Refer to the process sensor body reassembly procedure in
Section 5: Troubleshooting.
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July 2008
Rosemount 2051
O-rings:
The two styles of Rosemount flange adapters (Rosemount 1151 and
Rosemount 3051/2051/2024/3095) each require a unique O-ring (see Figure
2-9). Use only the O-ring designed for the corresponding flange adaptor.
Figure 2-9. O-Rings.
Failure to install proper flange adapter O-rings may cause process leaks, which can result in
death or serious injury. The two flange adapters are distinguished by unique O-ring grooves.
Only use the O-ring that is designed for its specific flange adapter, as shown below.
ROSEMOUNT 3051S / 3051 / 2051 / 3001 / 3095 / 2024
Flange
Adapter
O-ring
PTFE Based
Elastomer
ROSEMOUNT 1151
Flange Adapter
O-ring
PTFE
Elastomer
When compressed, PTFE O-rings tend to “cold flow,” which aids in their
sealing capabilities.
NOTE
PTFE O-rings should be replaced if the flange adapter is removed.
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July 2008
Rosemount 2051
Inline Process Connection
Do not apply torque directly to the sensor module. Rotation between the sensor module
and the process connection can damage the electronics. To avoid damage, apply torque
only to the hex-shaped process connection.
Sensor Module
Process Connection
Housing Rotation
The electronics housing can be rotated up to 180 degrees in either direction to
improve field access, or to better view the optional LCD display. To rotate the
housing, perform the following procedure:
1. Loosen the housing rotation set screw using a
5- -in.
----64
hex wrench.
2. Turn the housing left or right up to 180° from its original position. Over
rotating will damage the transmitter.
3. Retighten the housing rotation set screw.
Figure 2-10. Housing Rotation
Housing Rotation Set
Screw (5/64-in.)
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July 2008
Rosemount 2051
LCD Display
Transmitters ordered with the LCD option are shipped with the display
installed. Installing the display on an existing 2051 transmitter requires a small
instrument screwdriver.
Figure 2-11. LCD Display
.
Jumpers (Top and Bottom)
LCD Display
Extended
Cover
Configure Security and
Alarm
Security (Write Protect)
There are three security methods with the Rosemount 2051 transmitter:
1.
Security Jumper: prevents all writes to transmitter configuration.
2.
Local Keys (Local Zero and Span) Software Lock Out: prevents
changes to transmitter range points via local zero and span
adjustment keys. With local keys security enabled, changes to
configuration are possible via HART.
3.
Physical Removal of Local Keys (Local Zero and Span) Magnetic
Buttons: removes ability to use local keys to make transmitter range
point adjustments. With local keys security enabled, changes to
configuration are possible via HART.
NOTE
The Local Keys (Local Zero and Span Adjustments) are optional (option code
D4 in model number). If the Adjustments are not ordered on the transmitter,
options 2 and 3 above are not valid security method options.
You can prevent changes to the transmitter configuration data with the write
protection jumper. Security is controlled by the security (write protect) jumper
located on the electronics board or LCD display. Position the jumper on the
transmitter circuit board in the “ON” position to prevent accidental or
deliberate change of configuration data.
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July 2008
Rosemount 2051
If the transmitter write protection jumper is in the “ON” position, the transmitter
will not accept any “writes” to its memory. Configuration changes, such as
digital trim and reranging, cannot take place when the transmitter security is
on.
NOTE
If the security jumper is not installed, the transmitter will continue to operate in
the security OFF configuration.
Configuring Transmitter Security and Alarm Jumper Procedure
To reposition the jumpers, follow the procedure described below.
1.
Do not remove the transmitter covers in explosive atmospheres when
the circuit is live. If the transmitter is live, set the loop to manual and
remove power.
2.
Remove the housing cover opposite the field terminal side. Do not
remove the transmitter covers in explosive atmospheres when the
circuit is live.
3.
Reposition the jumpers as desired.
• Figure 2-12 shows the jumper positions for the 4-20 mA HART
Transmitter.
• Figure 2-13 shows the jumper positions for the 1-5 HART Vdc Low
Power Transmitter.
4.
Reattach the transmitter cover. Always ensure a proper seal by
installing the electronics housing covers so that metal contacts metal
to meet explosion-proof requirements.
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July 2008
Rosemount 2051
Figure 2-12. Electronics Board
4-20 mA HART
Without LCD Meter
With LCD Display
Alarm
Security
Figure 2-13. Low Power Transmitter Electronics Boards
1-5 Vdc HART Low Power
Without LCD Meter
With LCD Display
Alarm
Security
TRANSMITTER SECURITY
JUMPER POSITIONS
Write Protect ON
Write Protect OFF
NOTE
Security jumper not installed = Not Write Protected
Alarm jumper not installed = High Alarm
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July 2008
ELECTRICAL
CONSIDERATIONS
Rosemount 2051
NOTE
Make sure all electrical installation is in accordance with national and local
code requirements.
Conduit Installation
If all connections are not sealed, excess moisture accumulation can damage the
transmitter. Make sure to mount the transmitter with the electrical housing positioned
downward for drainage. To avoid moisture accumulation in the housing, install wiring
with a drip loop, and ensure the bottom of the drip loop is mounted lower than the
conduit connections or the transmitter housing.
Recommended conduit connections are shown in Figure 2-14.
Figure 2-14. Conduit Installation
Diagrams.
Possible
Conduit Line
Positions
Conduit
Lines
Sealing
Compound
CORRECT
Sealing
Compound
Possible
Conduit Line
Positions
CORRECT
INCORRECT
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July 2008
Rosemount 2051
Wiring
Do not connect the power signal wiring to the test terminals. Voltage may burn out the
reverse-polarity protection diode in the test connection.
NOTE
Use shielded twisted pairs to yield best results. To ensure proper
communication, use 24 AWG or larger wire, and do not exceed 5000 feet
(1500 meters).
Figure 2-15. 4-20 mA HART wiring
Power
Supply
RL ≥ 250Ω
Figure 2-16. 1-5 Vdc Low Power wiring
Power
Supply
Voltmeter
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July 2008
Rosemount 2051
Perform the following procedure to make wiring connections:
1. Remove the housing cover on terminal compartment side. Do not
remove the cover in explosive atmospheres when the circuit is live.
Signal wiring supplies all power to the transmitter.
2. a. For 4-20 mA HART output, connect the positive lead to the terminal
marked (+) and the negative lead to the terminal marked (pwr/comm - ).
Do not connect powered signal wiring to the test terminals. Power could
damage the test diode.
b. For 1-5 Vdc HART Low Power output, connect the positive lead to the
terminal marked (+ pwr) and the negative lead to the terminal marked
(pwr -). Connect signal lead to Vout / comm +.
3. Plug and seal unused conduit connection on the transmitter housing to
avoid moisture accumulation in the terminal side. Install wiring with a drip
loop. Arrange the drip loop so the bottom is lower than the conduit
connections and the transmitter housing.
Power Supply for 4-20 mA HART
Transmitter operates on 10.5 - 42.4 Vdc. The dc power supply should provide
power with less than two percent ripple.
NOTE
A minimum loop resistance of 250 ohms is required to communicate with a
HART Communicator. If a single power supply is used to power more than
one 2051 transmitter, the power supply used, and circuitry common to the
transmitters, should not have more than 20 ohms of impedance at 1200 Hz.
Figure 2-17. Load Limitation
Maximum Loop Resistance = 43.5 * (Power Supply Voltage – 10.5)
Load (Ohms)
1387
1000
Operating
Region
500
0
10.5
20
30
Voltage (V dc)
42.4
The HART communicator requires a minimum loop resistance of 250Ω for communication.
The total resistance load is the sum of the resistance of the signal leads and
the load resistance of the controller, indicator, and related pieces. Note that
the resistance of intrinsic safety barriers, if used, must be included.
Power Supply for 1-5 Vdc HART Low Power
Low power transmitters operate on 9–28 Vdc. The dc power supply should
provide power with less than two percent ripple. The Vout load should be 100
kΩ or greater.
See “Safety Messages” on page 2-1 for complete warning information.
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Rosemount 2051
Transient Protection
Terminal Block
The transmitter will withstand electrical transients of the energy level usually
encountered in static discharges or induced switching transients. However,
high-energy transients, such as those induced in wiring from nearby lightning
strikes, can damage the transmitter.
The transient protection terminal block can be ordered as an installed option
(Option Code T1 in the transmitter model number) or as a spare part to retrofit
existing 2051 transmitters in the field. See “Spare Parts” on page A-38 for
spare part numbers. The lightning bolt symbol shown in Figure 2-18 and
Figure 2-19 identifies the transient protection terminal block.
Figure 2-18. 4-20 mA HART wiring with transient protection
Figure 2-19. 1-5 Vdc Low Power wiring with transient protection
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July 2008
Rosemount 2051
NOTE
The transient protection terminal block does not provide transient protection
unless the transmitter case is properly grounded. Use the guidelines to
ground the transmitter case. Refer to page 2-29.
Do not run the transient protection ground wire with signal wiring as the
ground wire may carry excessive current if a lightning strike occurs.
Grounding
Use the following techniques to properly ground the transmitter signal wiring
and case:
Signal Wiring
Do not run signal wiring in conduit or open trays with power wiring or near
heavy electrical equipment. It is important that the instrument cable shield be:
•
Trimmed close and insulated from touching the transmitter housing
•
Connected to the next shield if cable is routed through a junction box
•
Connected to a good earth ground at the power supply end
For 4-20 mA HART output, the signal wiring may be grounded at any one
point on the signal loop or may be left ungrounded. The negative terminal of
the power supply is a recommended grounding point.
For 1-5 Vdc HART Low Power output, the power wires may be grounded at
only one point or left ungrounded. The negative terminal of the power supply
is a recommended grounding point.
Transmitter Case
Always ground the transmitter case in accordance with national and local
electrical codes. The most effective transmitter case grounding method is a
direct connection to earth ground with minimal impedance. Methods for
grounding the transmitter case include:
•
Internal Ground Connection: The Internal Ground Connection screw
is inside the FIELD TERMINALS side of the electronics housing. This
screw is identified by a ground symbol ( ). The ground connection
screw is standard on all Rosemount 2051 transmitters. Refer to
Figure 2-20.
•
External Ground Assembly: This assembly is included with the
optional transient protection terminal block (Option Code T1), and it is
included with various hazardous location certifications. The External
Ground Assembly can also be ordered with the transmitter (Option
Code V5), or as a spare part. See “Spare Parts” on page A-38. Refer to
Figure 2-21 for location of the External Ground Screw.
2-29
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Rosemount 2051
Figure 2-20. Internal Ground
Screw
00809-0100-4101, Rev AA
July 2008
Internal Ground
Connection Screw
Figure 2-21. External Ground
Assembly
External Ground
Assembly
NOTE
Grounding the transmitter case via threaded conduit connection may not
provide sufficient ground continuity.
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July 2008
Rosemount 2051
HAZARDOUS
LOCATIONS
CERTIFICATIONS
Individual transmitters are clearly marked with a tag indicating the approvals
they carry. Transmitters must be installed in accordance with all applicable
codes and standards to maintain these certified ratings. Refer to “Hazardous
Locations Certifications” on page B-2 for information on these approvals.
ROSEMOUNT 305, 306
AND 304 MANIFOLDS
The 305 Integral Manifold is available in two designs: Traditional and
Coplanar. The traditional 305 Integral Manifold can be mounted to most
primary elements with mounting adapters in the market today. The 306
Integral Manifold is used with the 2051T in-line transmitters to provide
block-and-bleed valve capabilities of up to 10000 psi (690 bar).
Figure 2-22. Manifolds
2051C AND 304
CONVENTIONAL
2051C AND 305
INTEGRAL TRADITIONAL
2051C AND 305
INTEGRAL COPLANAR
2051T AND 306
IN-LINE
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Rosemount 2051
Rosemount 305 Integral
Manifold Installation
Procedure
To install a 305 Integral Manifold to a 2051 transmitter:
1. Inspect the PTFE sensor module o-rings. Undamaged o-rings may be
reused. If the o-rings are damaged (if they have nicks or cuts, for
example), replace with o-rings designed for Rosemount transmitter.
IMPORTANT
If replacing the o-rings, take care not to scratch or deface the o-ring grooves
or the surface of the isolating diaphragm while you remove the damaged
o-rings.
2. Install the Integral Manifold on the sensor module. Use the four 2.25-in.
manifold bolts for alignment. Finger tighten the bolts, then tighten the
bolts incrementally in a cross pattern to final torque value. See “Flange
Bolts” on page 2-15 for complete bolt installation information and torque
values. When fully tightened, the bolts should extend through the top of
the sensor module housing.
3. If the PTFE sensor module o-rings have been replaced, the flange bolts
should be re-tightened after installation to compensate for cold flow of
the o-rings.
NOTE
Always perform a zero trim on the transmitter/manifold assembly after
installation to eliminate mounting effects.
Rosemount 306 Integral
Manifold Installation
Procedure
The 306 Manifold is for use only with a 2051T In-line transmitter.
Rosemount 304
Conventional Manifold
Installation Procedure
To install a 304 Conventional Manifold to a 2051 transmitter:
Assemble the 306 Manifold to the 2051T In-line transmitter with a
thread sealant.
1. Align the Conventional Manifold with the transmitter flange. Use the four
manifold bolts for alignment.
2. Finger tighten the bolts, then tighten the bolts incrementally in a cross
pattern to final torque value. See “Flange Bolts” on page 2-6 for complete
bolt installation information and torque values. When fully tightened, the
bolts should extend through the top of the sensor module housing.
3. Leak-check assembly to maximum pressure range of transmitter.
See “Safety Messages” on page 2-1 for complete warning information.
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July 2008
Rosemount 2051
Integral Manifold Operation
Three-valve configuration shown.
In normal operation the two isolate valves between the
process and instrument ports will be open and the
equalizing valve(s) will be closed.
L
H
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(closed)
Isolate
(open)
Isolate
(open)
Process
To zero the 2051, close the isolate valve to the low
pressure (downstream side) of the transmitter first.
L
H
Drain/
Vent
Valve
Equalize
(closed)
Isolate
(open)
Isolate
(closed)
Process
Next, open the center (equalize) valve(s) to equalize
the pressure on both sides of the transmitter.
L
H
Drain/
Vent
Valve
Equalize
(open)
Isolate
(open)
Drain/
Vent
Valve
Isolate
(closed)
Process
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Rosemount 2051
The manifold valves are now in the proper configuration
for zeroing the transmitter. To return the transmitter to
service, close the equalizing valve(s) first.
L
H
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(closed)
Isolate
(open)
Isolate
(closed)
Process
Next, open the isolate valve on the low pressure side of
the transmitter.
L
H
Drain/
Vent
Valve
Equalize
(closed)
Isolate
(open)
Isolate
(open)
Process
2-34
Drain/
Vent
Valve
Reference Manual
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July 2008
Rosemount 2051
LIQUID LEVEL
MEASUREMENT
Differential pressure transmitters used for liquid level applications measure
hydrostatic pressure head. Liquid level and specific gravity of a liquid are
factors in determining pressure head. This pressure is equal to the liquid
height above the tap multiplied by the specific gravity of the liquid. Pressure
head is independent of volume or vessel shape.
Open Vessels
A pressure transmitter mounted near a tank bottom measures the pressure of
the liquid above.
Make a connection to the high pressure side of the transmitter, and vent the
low pressure side to the atmosphere. Pressure head equals the liquid’s
specific gravity multiplied by the liquid height above the tap.
Zero range suppression is required if the transmitter lies below the zero point
of the desired level range. Figure 2-23 shows a liquid level measurement
example.
Closed Vessels
Pressure above a liquid affects the pressure measured at the bottom of a
closed vessel. The liquid specific gravity multiplied by the liquid height plus
the vessel pressure equals the pressure at the bottom of the vessel.
To measure true level, the vessel pressure must be subtracted from the
vessel bottom pressure. To do this, make a pressure tap at the top of the
vessel and connect this to the low side of the transmitter. Vessel pressure is
then equally applied to both the high and low sides of the transmitter. The
resulting differential pressure is proportional to liquid height multiplied by the
liquid specific gravity.
Dry Leg Condition
Low-side transmitter piping will remain empty if gas above the liquid does not
condense. This is a dry leg condition. Range determination calculations are
the same as those described for bottom-mounted transmitters in open
vessels, as shown in Figure 2-23.
Figure 2-23. Liquid Level
Measurement Example.
X
Let X equal the vertical distance between the minimum and maximum
measurable levels (500 in.).
Let Y equal the vertical distance between the transmitter datum line and the
minimum measurable level (100 in.).
Let SG equal the specific gravity of the fluid (0.9).
Let h equal the maximum head pressure to be measured in inches of water.
Let e equal head pressure produced by Y expressed in inches of water.
Let Range equal e to e + h.
Then h = (X)(SG)
= 500 x 0.9
= 450 inH2O
e = (Y)(SG)
= 100 x 0.9
= 90 inH2O
Range = 90 to 540 inH2O
Y
T
20
ZERO
SUPRESSION
mA dc
4
0
90
540
inH2O
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July 2008
Rosemount 2051
Wet Leg Condition
Condensation of the gas above the liquid slowly causes the low side of the
transmitter piping to fill with liquid. The pipe is purposely filled with a
convenient reference fluid to eliminate this potential error. This is a wet leg
condition.
The reference fluid will exert a head pressure on the low side of the
transmitter. Zero elevation of the range must then be made. See Figure 2-24
Figure 2-24. Wet Leg Example.
X
Z
Y
LT
H
L
Let X equal the vertical distance between the minimum and maximum
measurable levels (500 in.).
Let Y equal the vertical distance between the transmitter datum line and the
minimum measurable level (50 in.).
Let z equal the vertical distance between the top of the liquid in the wet leg
and the transmitter datum line (600 in.).
Let SG1 equal the specific gravity of the fluid (1.0).
Let SG2 equal the specific gravity of the fluid in the wet leg (1.1).
Let h equal the maximum head pressure to be measured in inches of water.
Let e equal the head pressure produced by Y expressed in inches of water.
Let s equal head pressure produced by z expressed in inches of water.
Let Range equal e – s to h + e – s.
Then h = (X)(SG1)
= 500 x 1.0
= 500 in H2O
e = (Y)(SG1)
= 50 x 1.0
= 50 inH2O
s = (z)(SG2)
= 600 x 1.1
= 660 inH20
Range = e – s to h + e – s.
= 50 – 660 to 500 + 50 – 660
= –610 to –110 inH20
20
ZERO ELEVATION
mA dc
4
-610
-110
inH2O
2-36
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Rosemount 2051
Bubbler System in Open Vessel
A bubbler system that has a top-mounted pressure transmitter can be used in
open vessels. This system consists of an air supply, pressure regulator,
constant flow meter, pressure transmitter, and a tube that extends down into
the vessel.
Bubble air through the tube at a constant flow rate. The pressure required to
maintain flow equals the liquid’s specific gravity multiplied by the vertical
height of the liquid above the tube opening. Figure 2-25 shows a bubbler
liquid level measurement example.
Figure 2-25. Bubbler Liquid Level
Measurement Example.
AIR
T
X
Let X equal the vertical distance between the minimum and maximum
measurable levels (100 in.).
Let SG equal the specific gravity of the fluid (1.1).
Let h equal the maximum head pressure to be measured in inches of water.
Let Range equal zero to h.
Then h = (X)(SG)
= 100 x 1.1
= 110 inH2O
Range = 0 to 110 inH2O
20
mA dc
4
0
110
inH2O
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Rosemount 2051
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Reference Manual
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July 2008
Section 3
Rosemount 2051
Configuration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2
Configuration Data Review . . . . . . . . . . . . . . . . . . . . . . . . page 3-4
HART Communicator Menu Trees . . . . . . . . . . . . . . . . . . . page 3-5
Fast Key Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-7
Check Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-8
Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-9
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-14
Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-16
Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-18
Advanced Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-20
Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . page 3-23
OVERVIEW
This section contains information on commissioning and tasks that should be
performed on the bench prior to installation.
HART Communicator and AMS Device Manager instructions are given to
perform configuration functions. For convenience, HART Communicator fast
key sequences are labeled “Fast Keys” for each software function below the
appropriate headings.
SAFETY MESSAGES
Procedures and instructions 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 ( ). Refer to
the following safety messages before performing an operation preceded by
this symbol.
Warnings
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. Please review the
approvals section of the 2051 reference manual for any restrictions associated with a safe
installation.
• Before connecting a HART communicator in an explosive atmosphere, ensure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers when
power is applied to the unit.
Process leaks may cause harm or result in death.
• Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
www.rosemount.com
Reference Manual
Rosemount 2051
COMMISSIONING
00809-0100-4101, Rev AA
July 2008
Commissioning consists of testing the transmitter and verifying transmitter
configuration data. The 2051 transmitters can be commissioned either before
or after installation. Commissioning the transmitter on the bench before
installation using a HART Communicator or AMS Device Manager ensures
that all transmitter components are in working order.
To commission on the bench, required equipment includes a power supply, a
milliamp meter, and a HART Communicator or AMS Device Manager. Wire
equipment as shown in Figure 3-1 and Figure 3-2. To ensure successful
communication, a resistance of at least 250 ohms must be present between
the HART Communicator loop connection and the power supply. Connect the
HART Communicator leads to the terminals labeled “COMM” on the terminal
block.
Set all transmitter hardware adjustments during commissioning to avoid
exposing the transmitter electronics to the plant environment after installation.
When using a HART Communicator, any configuration changes made must
be sent to the transmitter by using the “Send” key. AMS Device Manager
configuration changes are implemented when the “Apply” button is clicked.
Setting the Loop to
Manual
3-2
Whenever sending or requesting data that would disrupt the loop or change
the output of the transmitter, set the process application loop to manual. The
HART Communicator or AMS Device Manager will prompt you to set the loop
to manual when necessary. Acknowledging this prompt does not set the loop
to manual. The prompt is only a reminder; set the loop to manual as a
separate operation.
Reference Manual
00809-0100-4101, Rev AA
July 2008
Wiring Diagrams
Rosemount 2051
Connect the equipment as shown in Figure 3-1 for 4-20 mA HART or
Figure 3-2 for 1-5 Vdc HART Low Power. To ensure successful
communication, a resistance of at least 250 ohms must be present between
the HART Communicator loop connection and the power supply. The HART
Communicator or AMS Device Manager may be connected at “COMM” on the
transmitter terminal block or across the load resistor. Connecting across the
“TEST” terminals will prevent successful communication for 4-20 mA HART
output.
Turn on the HART Communicator by pressing the ON/OFF key or log into
AMS Device Manager. The HART Communicator or AMS Device Manager
will search for a HART-compatible device and indicate when the connection is
made. If the HART Communicator or AMS Device Manager fail to connect, it
indicates that no device was found. If this occurs, refer to Section 5:
Troubleshooting.
Figure 3-1. 4–20 mA HART Transmitter Wiring Diagrams
Power
Supply
RL ≥ 250Ω
Figure 3-2. 1-5 Vdc HART Low Power Transmitter Wiring
Power
Supply
Voltmeter
3-3
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
CONFIGURATION DATA
REVIEW
NOTE
Information and procedures in this section that make use of HART
Communicator fast key sequences and AMS Device Manager assume that
the transmitter and communication equipment are connected, powered, and
operating correctly.
The following is a list of factory default configurations. These can be reviewed
by using the HART Communicator or AMS Device Manager.
HART Communicator
4-20 mA Fast Keys
1, 5
1-5 Vdc Fast Keys
1, 5
Enter the fast key sequence to view the configuration data.
Transmitter Model
Type
Tag
Range
Date
Descriptor
Message
Minimum and Maximum Sensor Limits
Minimum Span
Units
4 and 20 mA points
Output (linear or sq. root)
Damping
Alarm Setting (high, low)
Security Setting (on, off)
Local Zero/Span Keys (enabled, disabled)
Integral Display
Sensor Fill
Isolator Material
Flange (type, material)
O-Ring Material
Drain/Vent
Remote Seal (type, fill fluid, isolator material, number) Transmitter S/N
Address
Sensor S/N
AMS Device Manager
Right click on the device and select “Configuration Properties” from the menu.
Select the tabs to review the transmitter configuration data.
3-4
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
HART COMMUNICATOR
MENU TREES
Online Menu
1 PROCESS
VARIABLE
1 DEVICE
SETUP
2 PV
3 AO
4 LRV
5 URV
1
2
3
4
2051 HART menu tree for 4-20 mA HART output
Pressure
Percent Range
Analog Output
Sensor
Temperature
1 TEST DEVICE
1 Keypad Input
2 Apply Values
1 Self Test
2 Status
2 TRIM ANALOG
OUTPUT
1 Zero Trim
2 Lower Sensor Trim
3 Upper Sensor Trim
4 Sensor Trim
Calibration Type
5 Sensor Trim Points
3 SENSOR TRIM
1 Sensor Trim
2 Analog Output Trim
1 RERANGE
2 Loop Test
2 DIAGNOSTICS
AND SERVICE
3 CALIBRATION
4 RECALL
FACTORY TRIM
1 Tag
1 Keypad Input
2 Apply Values
2 Unit
3 RANGE VALUES
4 DEVICE INFO
3 BASIC SETUP
5 Transfer Function
6 Damp
1 Digital-to-Analog Trim
2 Scaled D/A Trim
1
2
3
4
Date
Descriptor
Message
Write Protect
1
2
3
4
5
Sel Dec Pt Pos
CM Upper Value
CM Lower Value
CM Units
CM xfer function
1 PROCESS VARIABLE
2 SENSOR SERVICE
3 Unit
1 Sensor Temp
2 Temperature Unit
1 Meter Type
2 CUSTOM
METER SETUP
1 Pressure
2 % Range
3 Snsr Temp
1 SENSOR
TRIM
2 Recall
Factory
Trim
1 Pressure
2 % Range
3 Sensor Temp
1 PRESSURE
SENSOR
2 TEMP SENSOR
1 Keypad Input
2 Apply Values
1
2
3
4
5
6
7 METER OPTS.
1 SENSORS
4 DETAILED
SETUP
2 SIGNAL
CONDITION
1 PROCESS
VARIABLE
2 RANGE
VALUES
3 Unit
4 Transfer Func
5 Damp
6 Snsr Temp Unit
7 ALM/SAT
LEVELS
1 PROCESS
VARIABLES
2 ANALOG
OUTPUT
3 OUTPUT
CONDITION
1
2
3
4
Pressure
% Range
Analog Output
Sensor Temp
1
2
3
4
Loop Test
Digital-to-Analog Trim
Scaled D/A Trim
AO Alarm Type
1 Meter Type
2 CUSTOM METER
SETUP
3 Custom Meter Value
3 HART OUTPUT
5 Review
4 METER
OPTIONS
4 DEVICE
INFORMATION
NOTE
“2051” will appear in the upper left of the
communicator screen when this menu tree is valid.
1 FIELD DEVICE
INFO
2 SENSOR INFO
3 Self Test
4 DIAPHRAGM
SEALS INFO
1
2
3
4
5
6
7
8
Measurement Type
Mod. Config. Type
Isolator Material
Fill Type
Proc. Conn. Type
Proc. Conn. Material
O-Ring Material
Drain/Vent Material
1
2
3
4
# of Diaphr. Seals
Diaphr. Seal Type
Diaphr. Seal Fill
Diaphr. Material
1 Zero Trim
2 Lower Sensor
Trim
3 Upper Sensor
Trim
4 Sensor Trim
Calibration
Type
5 Sensor Trim
Points
High Alarm
Low Alarm
High Saturation
Low Saturation
AO Alarm Type
Alarm/Sat Type
1
2
3
4
Poll Address
Nos. of Req. Pream.
Burst Mode
Burst Option
1
2
3
4
5
Sel. Dec. Pt. Pos.
CM Upper Value
CM Lower Value
CM Units
CM xfer function
1 Tag
2 Date
3 Descriptor
4 Message
5 Model
6 Write Protect
7 Local Keys
8 REVISION #S
9 Final Assy #
10 Device ID
11 Distributor
1 Univ.
Rev.
2 Fid. Dev.
Rev.
3 S/W Rev.
3-5
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051 HART menu tree for 1-5 Vdc HART Low Power
Online Menu
1 PROCESS
VARIABLE
1 DEVICE
SETUP
2 PV
1 Pressure
1 Self Test
2 Percent Range
2 Status
3 Analog Output
1 Keypad Input
2 Apply Values
4 Sensor
Temperature
1 RERANGE
1 TEST DEVICE
2 TRIM ANALOG
OUTPUT
1 Digital-to-Analog Trim
3 AO
2 Scaled D/A Trim
4 LRV
5 URV
1 Zero Trim
2 Lower Sensor Trim
3 Upper Sensor Trim
3 SENSOR TRIM
4 Sensor Trim Points
2 Loop Test
1 Pressure
2 % Range
3 Snsr Temp
1 Keypad Input
2 DIAGNOSTICS
AND SERVICE
2 Apply Values
1 PROCESS VARIABLE
3 CALIBRATION
1 Tag
1 Date
2 SENSOR SERVICE
2 Descriptor
3 Unit
1 SENSOR
TRIM
3 Message
4 Write Protect
5 Meter Type
2 Unit
3 RANGE VALUES
1 PRESSURE
SENSOR
4 DEVICE INFO
2 TEMP SENSOR
5 Transfer Function
1 PROCESS
VARIABLE
6 Damp
2 RANGE
VALUES
3 Unit
3 BASIC SETUP
4 Transfer Func
5 Damp
1 SENSORS
1 PROCESS
VARIABLES
1 Sensor Temp
2 Sensor Temp Unit
1 Zero Trim
2 Lower
Sensor Trim
3 Upper
Sensor Trim
4 Sensor Trim
Points
1 Pressure
2 % Range
3 Sensor Temp
1 Keypad Input
2 Apply Values
1 Pressure
2 % Range
3 Analog Output
4 Sensor Temp
1 Loop Test
2 Digital-to-Analog Trim
3 Scaled D/A Trim
4 AO Alarm Type
2 ANALOG
OUTPUT
4 DETAILED
SETUP
1 Poll Address
2 Nos. of Req. Pream.
2 SIGNAL
CONDITION
3 Burst Mode
3 AO Alarm Type
4 Burst Option
1 Tag
4 HART OUTPUT
2 Date
3 Descriptor
3 OUTPUT
CONDITION
5 Review
1 FIELD DEVICE
INFO
4 Message
2 SENSOR INFO
3 Meter Type
1 Measurement Type
4 Self Test
3 Isolator Material
2 Mod. Config. Type
4 Fill Fluid
5 Flange Type
4 DEVICE
INFORMATION
6 Proc. Conn. Material
7 Flange Material
8 Drain/Vent Material
9 # of Diaphr. Seals
Diaphr. Seal Type
Diaphr. Material
3-6
5 Model
6 Write Protect
7 Local Keys
8 REVISION #S
9 Final Assy #
Device ID
Distributor
1 Univ. Rev.
2 Fid. Dev. Rev.
3 S/W Rev.
Reference Manual
00809-0100-4101, Rev AA
July 2008
FAST KEY SEQUENCE
Rosemount 2051
A check (⻫) indicates the basic configuration parameters. At minimum, these
parameters should be verified as part of the configuration and startup
procedure.
Table 3-1. 2051 Fast Key
Sequence
Function
Alarm and Saturation Levels
Analog Output Alarm Type
Burst Mode Control
Burst Operation
Custom Meter Configuration
Custom Meter Value
Damping
Date
Descriptor
Digital To Analog Trim (4-20 mA Output)
Disable Local Span/Zero Adjustment
Field Device Information
Full Trim
Keypad Input – Rerange
Local Zero and Span Control
Loop Test
Lower Sensor Trim
Message
Meter Options
Number of Requested Preambles
Poll Address
Poll a Multidropped Transmitter
Range Values
Rerange
Scaled D/A Trim (4–20 mA Output)
Self Test (Transmitter)
Sensor Info
Sensor Temperature
Sensor Trim Points
Status
Tag
Transfer Function (Setting Output Type)
Transmitter Security (Write Protect)
Trim Analog Output
Units (Process Variable)
Upper Sensor Trim
Zero Trim
4-20 mA HART
1-5 Vdc HART
Low Power
1, 4, 2, 7
1, 4, 3, 2, 4
1, 4, 3, 3, 3
1, 4, 3, 3, 4
1, 3, 7, 2
1, 4, 3, 4, 3
1, 3, 6
1, 3, 4, 1
1, 3, 4, 2
1, 2, 3, 2, 1
1, 4, 4, 1, 7
1, 4, 4, 1
1, 2, 3, 3
1, 2, 3, 1, 1
1, 4, 4, 1, 7
1, 2, 2
1, 2, 3, 3, 2
1, 3, 4, 3
1, 4, 3, 4
1, 4, 3, 3, 2
1, 4, 3, 3, 1
Left Arrow, 4, 1, 1
1, 3, 3
1, 2, 3, 1
1, 2, 3, 2, 2
1, 2, 1, 1
1, 4, 4, 2
1, 1, 4
1, 2, 3, 3, 4
1, 2, 1, 2
1, 3, 1
1, 3, 5
1, 3, 4, 4
1, 2, 3, 2
1, 3, 2
1, 2, 3, 3, 3
1, 2, 3, 3, 1
N/A
1, 4, 3, 2, 4
1, 4, 3, 3, 3
1, 4, 3, 3, 4
N/A
N/A
1, 3, 6
1, 3, 4, 1
1, 3, 4, 2
1, 2, 3, 2, 1
1, 4, 4, 1, 7
1, 4, 4, 1
1, 2, 3, 3
1, 2, 3, 1, 1
1, 4, 4, 1, 7
1, 2, 2
1, 2, 3, 3, 2
1, 3, 4, 3
N/A
1, 4, 3, 3, 2
1, 4, 3, 3, 1
Left Arrow, 4, 1, 1
1, 3, 3
1, 2, 3, 1
1, 2, 3, 2, 2
1, 2, 1, 1
1, 4, 4, 2
1, 1, 4
1, 2, 3, 3, 4
1, 2, 1, 2
1, 3, 1
1, 3, 5
1, 3, 4, 4
1, 2, 3, 2
1, 3, 2
1, 2, 3, 3, 3
1, 2, 3, 3, 1
3-7
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
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.
Process Variables
The process variables for the 2051 provide transmitter output, and are
continuously updated. The pressure reading in both engineering units and
percent of range will continue to track with pressures outside of the defined
range from the lower to the upper range limit of the sensor module.
HART Communicator
4-20 mA Fast Keys
1, 1
1-5 Vdc Fast Keys
1, 1
The process variable menu displays the following process variables:
•
Pressure
•
Percent of range
•
Analog output
AMS Device Manager
Right click on the device and select “Process Variables...” from the menu.The
process variable screen displays the following process variables:
Sensor Temperature
•
Pressure
•
Percent of range
•
Analog output
The 2051 contains a temperature sensor near the pressure sensor in the
sensor module. When reading this temperature, keep in mind the sensor is
not a process temperature reading.
HART Communicator
4-20 mA Fast Keys
1, 1, 4
1-5 Vdc Fast Keys
1, 1, 4
Enter the fast key sequence “Sensor Temperature” to view the sensor
temperature reading.
AMS Device Manager
Right click on the device and select “Process Variables...” from the menu.
“Snsr Temp” is the sensor temperature reading.
3-8
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
BASIC SETUP
Set Process Variable
Units
The PV Unit command sets the process variable units to allow you to monitor
your process using the appropriate units of measure.
HART Communicator
4-20 mA Fast Keys
1, 3, 2
1-5 Vdc Fast Keys
1, 3, 2
Enter the fast key sequence “Set Process Variable Units.” Select from the
following engineering units:
•
•
•
•
•
•
inH2O
inHg
ftH2O
mmH2O
mmHg
psi
•
•
•
•
•
•
bar
mbar
g/cm2
kg/cm2
Pa
kPa
•
•
•
•
torr
atm
inH2O at 4 °C
mmH2O at 4 °C
AMS Device Manager
Right click on the device and select “Configure” from the menu. In the Basic
Setup tab, use “Unit” drop down menu to select units.
Set Output
(Transfer function)
The 2051 has two output settings: Linear and Square Root. Activate the
square root output option to make analog output proportional to flow. As input
approaches zero, the 2051 automatically switches to linear output in order to
ensure a more smooth, stable output near zero (see Figure 3-3).
For 4-20 mA HART output, the slope of the curve is unity (y = x) from 0 to 0.6
percent of the ranged pressure input. This allows accurate calibration near
zero. Greater slopes would cause large changes in output (for small changes
at input). From 0.6 percent to 0.8 percent, curve slope equals 42 (y = 42x) to
achieve continuous transition from linear to square root at the transition point.
HART Communicator
4-20 mA Fast Keys
1, 3, 5
1-5 Vdc Fast Keys
1, 3, 5
AMS Device Manager
Right click on the device and select “Configure” from the menu.
1. In the Basic Setup tab, use “Xfer fnctn” drop down menu to select output,
click Apply.
2. After carefully reading the warning provided, select yes.
3-9
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Figure 3-3. 4-20 mA HART
Square Root Output Transition
Point
Sq. Root
Curve
Full Scale Full Scale
Flow (%)
Output
(mA dc)
Sq. Root Curve
Transition Point
Transition Point
Linear Section
Slope=42
Slope=1
NOTE
For a flow turndown of greater than 10:1 it is not recommended to perform a
square root extraction in the transmitter. Instead, perform the square root
extraction in the system.
Rerange
The Range Values command sets each of the lower and upper range analog
values (4 and 20 mA points and 1 and 5 Vdc points) to a pressure. The lower
range point represents 0% of range and the upper range point represents
100% of range. In practice, the transmitter range values may be changed as
often as necessary to reflect changing process requirements. For a complete
listing of Range & Sensor limits, refer to “Range and Sensor Limits” on
page A-4.
NOTE
Transmitters are shipped from Emerson Process Management fully calibrated
per request or by the factory default of full scale (zero to upper range limit).
NOTE
Regardless of the range points, the 2051 will measure and report 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% of range reading.
3-10
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
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 with a HART Communicator or AMS Device Manager only.
•
Rerange with a pressure input source and a HART Communicator or
AMS Device Manager.
•
Rerange with a pressure input source and the local zero and span
buttons (option D4).
NOTE
If the transmitter security switch is ON, adjustments to the zero and span will
not be able to be made. Refer to “Configure Security and Alarm” on page 2-22
for security information.
Rerange with a HART Communicator or AMS Device Manager Only
The easiest and most popular way to rerange is to use the HART
Communicator only. This method changes the range values of the analog 4
and 20 mA points (1 and 5 Vdc points) independently without a pressure
input. This means that when you change either the 4 or 20 mA setting, you
also change the span.
An example for the 4-20 mA HART output:
If the transmitter is ranged so that
4 mA = 0 inH2O, and
20 mA = 100 inH2O,
and you change the 4 mA setting to 50 inH2O using the communicator only,
the new settings are:
4 mA = 50 inH2O, and
20 mA = 100 inH2O.
Note that the span was also changed from 100 inH2O to 50 inH2O, while the
20 mA setpoint remained at 100 inH2O.
To obtain reverse output, simply set the 4 mA point at a greater numerical
value than the 20 mA point. Using the above example, setting the 4 mA point
at 100 inH2O and the 20 mA point at 0 inH2O will result in reverse output.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 1
1-5 Vdc Fast Keys
1, 2, 3, 1
From the HOME screen, enter the fast key sequence “Rerange with a
Communicator Only.”
AMS Device Manager
Right click on the device and select “Configure” from the menu. In the Basic
Setup tab, locate the Analog Output box and perform the following procedure:
1. Enter the lower range value (LRV) and the upper range value (URV) in
the fields provided. Click Apply.
2. After carefully reading the warning provided, select yes.
3-11
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Rerange with a Pressure Input Source and a HART Communicator or
AMS Device Manager
Reranging using the HART Communicator and applied pressure is a way of
reranging the transmitter when specific 4 and 20 mA points (1 and 5 Vdc
points) are not calculated.
NOTE
The span is maintained when the 4 mA point (1 Vdc point) is set. The span
changes when the 20 mA point (5 Vdc 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.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 1, 2
1-5 Vdc Fast Keys
1, 2, 3, 1, 2
From the HOME screen, enter the fast key sequence "Rerange with a
Pressure Input Source and a HART Communicator or AMS Device Manager".
AMS Device Manager
Right click on the device, select “Calibrate”, then “Apply values” from the
menu.
1. Select Next after the control loop is set to manual.
2. From the “Apply Values” menu, follow the on-line instructions to
configure lower and upper range values.
3. Select Exit to leave the “Apply Values” screen.
4. Select Next to acknowledge the loop can be returned to automatic
control.
5. Select Finish to acknowledge the method is complete.
Rerange with a Pressure Input Source and the Local Zero and Span
buttons (option D4)
Reranging using the local zero and span adjustments (see Figure 3-4 on
page 3-13) and a pressure source is a way of reranging the transmitter when
specific 4 and 20 mA (1 and 5 Vdc) points are not known and a communicator
is not available.
NOTE
When you set the 4 mA (1 Vdc) point the span is maintained; when you set
the 20 mA (5 Vdc) point the span changes. If you set the lower range point 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.
3-12
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
To rerange the transmitter using the span and zero buttons, perform the
following procedure:
1. Loosen the screw holding the certifications label on the side of the
transmitter housing. Slide the label to expose the zero and span buttons.
See Figure 3-4.
2. Apply the desired 4 mA (1 Vdc) pressure value to the transmitter. Push
and hold the zero adjustment button for at least two seconds but no
longer than ten seconds.
3. Apply the desired 20 mA (5 Vdc) pressure value to the transmitter. Push
and hold the span adjustment button for at least two seconds but no
longer than ten seconds.
Figure 3-4. Zero and Span
buttons
Span
Zero
NOTE
The span is maintained when the 4 mA point (1 Vdc point) is set. The span
changes when the 20 mA point (5 Vdc 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.
Damping
The “Damp” command introduces a delay in the micro-processing which
increases the response time of the transmitter; smoothing 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 default damping
value is 0.4 seconds and it can be set to any of ten pre-configured damping
values between 0 and 25.6 seconds. See list below.
•
•
•
•
0.00 seconds
0.20 seconds
1.60 seconds
12.8 seconds
•
•
•
•
0.05 seconds
0.40 seconds
3.20 seconds
25.6 seconds
•
•
•
0.10 seconds
0.80 seconds
6.40 seconds
The current damping value can be determined by executing the HART
Communicator fast keys or going to "Configure" in AMS Device Manager.
3-13
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
HART Communicator
4-20 mA Fast Keys
1, 3, 6
1-5 Vdc Fast Keys
1, 3, 6
AMS Device Manager
Right click on the device and select “Configure” from the menu.
1. In the “Basic Setup” tab, enter the damping value in the “Damp” field,
click Apply.
2. After carefully reading the warning provided, select yes.
LCD DISPLAY
The LCD display connects directly to the interface board which maintains
direct access to the signal terminals. The display indicates output and
abbreviated diagnostic messages. A display cover is provided to
accommodate the display.
For 4-20 mA HART output, the LCD display features a two-line display. The
first line of five characters displays the actual measured value, the second line
of six characters displays the engineering units. The LCD can also display
diagnostic messages. Refer to Figure 3-5.
For 1-5 Vdc HART Low Power output, the LCD display features a single-line
display with four characters that display the actual value. The LCD can also
display diagnostic messages. Refer to Figure 3-5.
Figure 3-5.
4-20 mA HART
3-14
1-5 Vdc HART Low Power
Reference Manual
00809-0100-4101, Rev AA
July 2008
LCD Display
Configuration for 4-20
mA HART only
Rosemount 2051
The factory default alternates are between Engineering Units and % of
Range. The LCD Display Configuration command allows customization of the
LCD display to suit application requirements. The LCD display will alternate
between the selected items:
•
•
•
Eng. Units only
% of Range only
Custom Display only
•
•
•
Alternate Eng. Units & % of Range
Alternate Eng. Units & Custom Display
Alternate % of Range & Custom Display
HART Communicator
4-20 mA Fast Keys
1, 3, 7
To change the standard default to one of the above options, follow these
steps:
1.
From the communicators main menu select (1) Device Setup (3)
Basic Setup, (7) Meter Options.
2.
Select (1) Meter Type. Using the up or down arrows scroll up or down
until the desired display has been highlighted. Press ENTER, SEND,
and HOME.
AMS
Right click on the device and select “Configuration Properties” from the menu.
1. In the “Local Display” tab, locate the “Meter Type” area. Select the
desired options to suit your application needs, click Apply.
2. An “Apply Parameter Modification” screen appears, enter desired
information and click OK.
3. After carefully reading the warning provided, select OK.
Custom Display
Configuration 4-20 mA
HART only
The user-configurable scale is a feature that enables the LCD display to
display flow, level, or custom pressure units. With this feature you can define
the decimal point position, the upper range value, the lower range value, the
engineering units, and the transfer function.The display can be configured
using a HART Communicator or AMS.
The user-configurable scale feature can define:
•
decimal point position
•
upper range values
•
lower range values
•
engineering units
•
transfer function
To configure the display with a HART communicator, perform the following
procedure:
1.
Change the Meter Type to “Custom Meter” by using the Fast Key
sequence under “LCD Display Configuration for 4-20 mA HART only”
on page 3-15.
2.
Next from the ONLINE screen, Select 1 Device Setup, 3 Basic Setup,
7 Meter Options, 2 Meter Options, 2 Custom Meter Setup
3.
To specify decimal point position:
See “Safety Messages” on page 3-1 for complete warning information.
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a. Select 1 Sel dec pt pos. Choose the decimal point representation
that will provide the most accurate output for your application. For
example, when outputting between 0 and 75 GPM, choose
XX.XXX or use the decimal point examples below:
XXXXX
XXXX.X
XXX.XX
XX.XXX
X.XXXX
NOTE:
Make sure the selection has been sent and the decimal point has changed
before proceeding to the next step.
b. SEND
4. To specify a custom upper range value:
a. Select 2 CM Upper Value. Type the value that you want the
transmitter to read at the 20 mA point.
b. SEND
5.
To specify a custom lower range value:
a. Select 3 CM Lower Value. Type the value that you want the
transmitter to read at the 4 mA point.
b. SEND
6.
To define custom units:
a. Select 4 CM Units. Enter the custom units (five characters
maximum) that you want the display to display.
b. SEND
7.
To choose the transmitter transfer function for the display:
a. Select 5 CM xfer fnct. Enter the transmitter transfer function for the
display. Select sq root to display flow units. The custom meter
transfer function is independent of the analog output transfer
function.
8.
Select SEND to upload the configuration to the transmitter.
DETAILED SETUP
Failure Mode Alarm and
Saturation
The 2051 transmitters automatically and continuously perform self-diagnostic
routines. If the self-diagnostic routines detect a failure, the transmitter drives
its output outside of the normal saturation values. The transmitter will drive its
output low or high based on the position of the failure mode alarm jumper.
See Table 3-2, Table 3-3, and Table 3-4 for failure mode and saturation output
levels. To select alarm position, see “Configure Security and Alarm” on
page 2-22.
Table 3-2. 4-20 mA HART
Alarm and Saturation Values
Level
3-16
4–20 mA Saturation
4–20 mA Alarm
Low
3.9 mA
≤ 3.75 mA
High
20.8 mA
≥ 21.75 mA
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Rosemount 2051
Table 3-3. NAMUR-Compliant
Alarm and Saturation Values
Level
4–20 mA Saturation
4–20 mA Alarm
Low
3.8 mA
≤ 3.6 mA
High
20.5 mA
≥ 22.5 mA
Table 3-4. 1-5 Vdc HART
Low-Power Alarm and
Saturation Values
Level
1–5 V Saturation
1–5 V Alarm
Low
0.97 V
≤ 0.95 V
High
5.20 V
≥ 5.4 V
CAUTION
Alarm level values will be affected by analog trim. Refer to “Analog Output
Trim” on page 4-7.
NOTE
When a transmitter is in an alarm condition, the HART communicator
indicates the analog output the transmitter would drive if the alarm condition
did not exist. The transmitter will alarm high in the event of failure if the alarm
jumper is removed.
Alarm and Saturation
Levels for Burst Mode
Transmitters set to burst mode handle saturation and alarm conditions
differently.
Alarm Conditions:
•
Analog output switches to alarm value
•
Primary variable is burst with a status bit set
•
Percent of range follows primary variable
•
Temperature is burst with a status bit set
Saturation:
•
Alarm and Saturation
Values for Multidrop
Mode
Analog output switches to saturation value
•
Primary variable is burst normally
•
Temperature is burst normally
Transmitters set to multidrop mode handle saturation and alarm conditions
differently.
Alarm Conditions:
•
Primary variable is sent with a status bit set
•
Percent of range follows primary variable
•
Temperature is sent with a status bit set
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Saturation:
•
Primary variable is sent normally
•
Temperature is sent normally
Alarm Level Verification
If the transmitter electronics board, sensor module, or LCD display is repaired
or replaced, verify the transmitter alarm level before returning the transmitter
to service. This feature is also useful in testing the reaction of the control
system to a transmitter in an alarm state. To verify the transmitter alarm
values, perform a loop test and set the transmitter output to the alarm value
(see Tables 3-2, 3-3, and 3-4 on page 3-16, and “Loop Test” on page 3-18).
DIAGNOSTICS AND
SERVICE
Diagnostics and service functions listed below are primarily for use after field
installation. The Transmitter Test feature is designed to verify that the
transmitter is operating properly, and the Loop Test feature is designed to
verify proper loop wiring and transmitter output.
Transmitter Test
The Transmitter Test command initiates a more extensive diagnostics routine
than that performed continuously by the transmitter. The test routine can
quickly identify potential electronics problems. If the test detects a problem,
messages to indicate the source of the problem are displayed on the HART
Communicator screen.
HART Communicator
4-20 mA Fast Keys
1, 2, 1, 1
1-5 Vdc Fast Keys
1, 2, 1, 1
AMS Device Manager
Right click on the device and select “Diagnostics and Test,” then “Self Test”
from the menu.
1. Click Next to acknowledge test results.
2. Select Finish to acknowledge the method is complete.
Loop Test
The 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.
HART Communicator
4-20 mA Fast Keys
1, 2, 2
1-5 Vdc Fast Keys
1, 2, 2
To initiate a loop test, perform the following procedure:
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Rosemount 2051
1. a. For 4-20 mA HART output, connect a reference meter to the
transmitter by either connecting the meter to the test terminals on the
terminal block, or shunting transmitter power through the meter at some
point in the loop.
b. For 1-5 Vdc Low Power HART output, connect a reference meter to
the Vout terminal.
2. From the HOME screen, enter the fast key sequence “Loop Test” to
verify the output of the transmitter.
3. Select OK after the control loop is set to manual (see “Setting the Loop
to Manual” on page 3-2).
4. Select a discrete milliamp level for the transmitter to output. At the
CHOOSE ANALOG OUTPUT prompt select 1: 4mA (1 Vdc), select 2:
20mA (5 Vdc), or select 3: “Other” to manually input a value.
a. If you are performing a loop test to verify the output of a transmitter,
enter a value between 4 and 20 mA (1 and 5 Vdc).
b. If you are performing a loop test to verify alarm levels, enter the
value representing an alarm state (see Tables 3-2, 3-3, and 3-4 on
page 3-16).
5. Check that the reference meter displays the commanded output value.
a. If the values match, the transmitter and the loop are configured and
functioning properly.
b. If the values do not match, the meter may be attached to the wrong
loop, there may be a fault in the wiring or power supply, the
transmitter may require an output trim, or the reference meter may
be malfunctioning.
After completing the test procedure, the display returns to the loop test screen
to choose another output value or to end loop testing.
AMS Device Manager
Right click on the device and select “Diagnostics and Test,” then “Loop test”
from the menu.
1. a. For 4-20 mA HART output, connect a reference meter to the
transmitter by either connecting the meter to the test terminals on the
terminal block, or shunting transmitter power through the meter at some
point in the loop.
b. For 1-5 Vdc Low Power HART output, connect a reference meter to
the Vout terminal.
2. Click Next after setting the control loop to manual.
3. Select desired analog output level. Click Next.
4. Click Next to acknowledge output being set to desired level.
5. Check that the reference meter displays the commanded output value.
a. If the values match, the transmitter and the loop are configured and
functioning properly.
b. If the values do not match, the meter may be attached to the wrong
loop, there may be a fault in the wiring or power supply, the
transmitter may require an output trim, or the reference meter may
be malfunctioning.
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After completing the test procedure, the display returns to the loop test screen
to choose another output value or to end loop testing.
6. Select End and click Next to end loop testing.
7. Select Next to acknowledge the loop can be returned to automatic
control.
8. Select Finish to acknowledge the method is complete.
ADVANCED FUNCTIONS
Saving, Recalling, and
Cloning Configuration
Data
Use the cloning feature of the HART Communicator or the AMS Device
Manager “User Configuration” feature to configure several 2051 transmitters
similarly. Cloning involves configuring a transmitter, saving the configuration
data, then sending a copy of the data to a separate transmitter. Several
possible procedures exist when saving, recalling, and cloning configuration
data. For complete instructions refer to the HART Communicator manual
(publication no. 00809-0100-4276) or AMS Device Manager on-line guides.
One common method is as follows:
HART Communicator
4-20 mA Fast Keys
left arrow, 1, 2
1-5 Vdc Fast Keys
left arrow, 1, 2
1. Completely configure the first transmitter.
2. Save the configuration data:
a. Select SAVE from the HART Communicator HOME/ONLINE
screen.
b. Ensure that the location to which the data will be saved is set to
MODULE. If it is not, select 1: Location to set the save location to
MODULE.
c. Select 2: Name, to name the configuration data. The default is the
transmitter tag number.
d. Ensure that the data type is set to STANDARD. If the data type is
NOT STANDARD, select 3: Data Type to set the data type to
STANDARD.
e. Select SAVE.
3. Connect and power the receiving transmitter and HART Communicator.
4. Select the back arrow from the HOME/ONLINE screen. The HART
Communicator menu appears.
5. Select 1: Offline, 2: Saved Configuration, 1: Module Contents to reach
the MODULE CONTENTS menu.
6. Use the DOWN ARROW to scroll through the list of configurations in the
memory module, and use the RIGHT ARROW to select and retrieve the
required configuration.
7. Select 1: Edit.
8. Select 1: Mark All.
9. Select SAVE.
10. Use the DOWN ARROW to scroll through the list of configurations in the
memory module, and use the RIGHT ARROW to select the configuration
again.
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11. Select 3: Send to download the configuration to the transmitter.
12. Select OK after the control loop is set to manual.
13. After the configuration has been sent, select OK to acknowledge that the
loop can be returned to automatic control.
When finished, the HART Communicator informs you of the status. Repeat
Steps 3 through 13 to configure another transmitter.
NOTE
The transmitter receiving cloned data must have the same software version
(or later) as the original transmitter.
AMS Device Manager creating a Reusable Copy
To create a reusable copy of a configuration perform the following procedure:
1. Completely configure the first transmitter.
2. Select View then User Configuration View from the menu bar (or click the
toolbar button).
3. In the User Configuration window, right click and select New from the
context menu.
4. In the New window, select a device from the list of templates shown, and
click OK.
5. The template is copied into the User Configurations window, with the tag
name highlighted; rename it as appropriate and press Enter.
NOTE
A device icon can also be copied by dragging and dropping a device template
or any other device icon from AMS Device Manager Explorer or Device
Connection View into the User Configurations window.
The “Compare Configurations” window appears, showing the Current values
of the copied device on one side and mostly blank fields on the other (User
Configuration) side.
6. Transfer values from the current configuration to the user configuration
as appropriate or enter values by typing the values into the available
fields.
7. Click Apply to apply the values, or click OK to apply the values and close
the window.
AMS Device Manager Applying a User Configuration
Any amount of user configurations can be created for the application. They
can also be saved, and applied to connected devices or to devices in the
Device List or Plant Database.
NOTE
When using AMS Device Manager Revision 6.0 or later, the device to which
the user configuration is applied, must be the same model type as the one
created in the user configuration. When using AMS Device Manager Revision
5.0 or earlier, the same model type and revision number are required.
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To apply a user configuration perform the following procedure:
1. Select the desired user configuration in the User Configurations window.
2. Drag the icon onto a like device in AMS Device Manager Explorer or
Device Connection View. The Compare Configurations window opens,
showing the parameters of the target device on one side and the
parameters of the user configuration on the other.
3. Transfer parameters from the user configuration to the target device as
desired, Click OK to apply the configuration and close the window.
Burst Mode
When configured for burst mode, the 2051 provides faster digital
communication from the transmitter to the control system by eliminating the
time required for the control system to request information from the
transmitter. Burst mode is compatible with the analog signal. Because the
HART protocol features simultaneous digital and analog data transmission,
the analog value can drive other equipment in the loop while the control
system is receiving the digital information. Burst mode applies only to the
transmission of dynamic data (pressure and temperature in engineering units,
pressure in percent of range, and/or analog output), and does not affect the
way other transmitter data is accessed.
Access to information other than dynamic transmitter data is obtained through
the normal poll/response method of HART communication. A HART
Communicator, AMS Device Manager or the control system may request any
of the information that is normally available while the transmitter is in burst
mode. Between each message sent by the transmitter, a short pause allows
the HART Communicator, AMS Device Manager or a control system to initiate
a request. The transmitter will receive the request, process the response
message, and then continue “bursting” the data approximately three times per
second.
HART Communicator
4-20 mA Fast Keys
1, 4, 3, 3, 3
1-5 Vdc Fast Keys
1, 4, 3, 3, 3
AMS Device Manager
Right click on the device and select “Configure” from the menu.
1. In the “HART” tab, use the drop down menu to select “Burst Mode ON or
OFF.” For “Burst option” select the desired properties from the drop down
menu. Burst options are as follows:
•
PV
•
% range/current
•
Process vars/crnt
•
Process variables
2. After selecting options click Apply.
3. After carefully reading the warning provided, select yes.
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MULTIDROP
COMMUNICATION
Rosemount 2051
Multidropping transmitters refers to the connection of several transmitters to a
single communications transmission line. Communication between the host
and the transmitters takes place digitally with the analog output of the
transmitters deactivated. With smart communications protocol, up to fifteen
transmitters can be connected on a single twisted pair of wires, or over leased
phone lines.
Multidrop installation requires consideration of the update rate necessary from
each transmitter, the combination of transmitter models, and the length of the
transmission line. Communication with transmitters can be accomplished with
HART modems and a host implementing HART protocol. Each transmitter is
identified by a unique address (1–15) and responds to the commands defined
in the HART protocol. HART Communicators and AMS Device Manager can
test, configure, and format a multidropped transmitter the same way as a
transmitter in a standard point-to-point installation.
Figure 3-6 shows a typical multidrop network. This figure is not intended as an
installation diagram.
NOTE
A transmitter in multidrop mode has the analog output fixed at 4 mA. If an
LCD display is installed to a transmitter in multidrop mode, it will alternate the
display between “current fixed” and the specified LCD display output(s).
Figure 3-6. Typical Multidrop
Network
HART Modem
Power
Supply
The 2051 is set to address zero (0) at the factory, which allows operation in
the standard point-to-point manner with a 4–20 mA output signal. To activate
multidrop communication, the transmitter address must be changed to a
number from 1 to 15. This change deactivates the 4–20 mA analog output,
sending it to 4 mA. It also disables the failure mode alarm signal, which is
controlled by the upscale/downscale switch position. Failure signals in
multidropped transmitters are communicated through HART messages.
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Changing a Transmitter
Address
To activate multidrop communication, the transmitter poll address must be
assigned a number from 1 to 15, and each transmitter in a multidropped loop
must have a unique poll address.
HART Communicator
4-20 mA Fast Keys
1, 4, 3, 3, 1
1-5 Vdc Fast Keys
1, 4, 3, 3, 1
AMS Device Manager
Right click on the device and select “Configuration Properties” from the menu.
1. In the “HART” tab, in “ID” box, enter poll address located in the “Poll
addr” box, click Apply.
2. After carefully reading the warning provided, select yes.
Communicating with a
Multidropped
Transmitter
HART Communicator
4-20 mA Fast Keys
1, 4, 3, 3, 2
1-5 Vdc Fast Keys
1, 4, 3, 3, 2
To communicate with a multidropped transmitter, configure the HART
Communicator to poll for a non-zero address.
1. From the HOME screen, enter the fast key sequence “Communicating
with a Multidropped Transmitter.”
2. On the polling menu, scroll down and select “Digital Poll.” In this mode,
the HART Communicator automatically polls for devices at addresses
0-15 upon start up.
AMS Device Manager
Click on the HART modem icon and select “Scan All Devices.”
Polling a Multidropped
Transmitter
Polling a multidropped loop determines the model, address, and number of
transmitters on the given loop.
HART Communicator
4-20 mA Fast Keys
Left arrow, 4, 1
1-5 Vdc Fast Keys
Left arrow, 4, 1
AMS Device Manager
Click on the HART modem icon and select “Scan All Devices.”
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Section 4
Rosemount 2051
Operation and Maintenance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1
Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2
Analog Output Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-7
Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-10
OVERVIEW
This section contains information on calibrating and diagnostics messages on
the Rosemount 2051 Pressure Transmitters.
HART Communicator and AMS instructions are given to perform configuration
functions. For convenience, HART Communicator fast key sequences are
labeled “Fast Keys” for each software function below the appropriate
headings.
SAFETY MESSAGES
Procedures and instructions 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 ( ). Refer to
the following safety messages before performing an operation preceded by
this symbol.
Warnings
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. Please review the
approvals section of the 2051 reference manual for any restrictions associated with a safe
installation.
• Before connecting a HART communicator in an explosive atmosphere, ensure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers when
power is applied to the unit.
Process leaks may cause harm or result in death.
• Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
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Reference Manual
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July 2008
Rosemount 2051
CALIBRATION
OVERVIEW
Calibration is defined as the process required to optimize transmitter accuracy
over a specific range by adjusting the factory sensor characterization curve
located in the microprocessor. Possible procedures are:
• Reranging: Setting the lower and upper range points (4 and 20 mA or 1
and 5 Vdc) points at required pressures. Reranging does not change the
factory sensor characterization curve. Refer to page 3-10.
• Analog Output Trim: Adjusts the transmitter’s analog characterization
curve to match the plant standard of the control loop. There are two types
of digital-to-analog output trims. Refer to page 4-7.
•
Digital-to-Analog Output Trim on 4-20 mA HART output (page 4-7)
•
Digital-to-Analog Output Trim on 4-20 mA HART output Using Other
Scale (page 4-8)
• Sensor Trim: Adjusts the position of the factory sensor characterization
curve due to a change in the sensor characteristics over time or a change
in test equipment. Trimming has two steps, zero and sensor trims. Refer to
page 4-10 and page 4-11.
•
Zero Trim (page 4-10)
•
Sensor Trim (page 4-11)
Figure 4-1 on page 4-3 illustrates 2051 transmitter data flow. Data flow can be
summarized in four major steps:
1. A change in pressure is measured by a change in the sensor output
(Sensor Signal).
2. The sensor signal is converted to a digital format that is understood by
the microprocessor (Analog-to-Digital Signal Conversion). Sensor trim
functions affect this value. Select these options to alter the digital signal
on the LCD or HART Communicator.
3. Corrections are performed in the microprocessor to obtain a digital
representation of the process input (Digital PV).
4. The Digital PV is converted to an analog value (Digital-to-Analog Signal
Conversion). Rerange and Analog trim functions affect this value. Select
these options to change the range points (4-20 mA or 1-5 Vdc).
For a summary of recommended calibration procedures, refer to Table 4-1 on
page 4-3. Also, Figure 4-1 on page 4-3 identifies the approximate transmitter
location for each calibration task. Data flows from left to right and a parameter
change affects all values to the right of the changed parameter.
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Rosemount 2051
Figure 4-1. Transmitter Data
Flow with Calibration Options
Transmitter Ranged 0 to 100 inH2O
(0 to 0,25 bar)
SENSOR
(STEP 1)
A/D
(STEP 2)
MICRO
(STEP 3)
D/A
(STEP 4)
Output: 100 in. H20
Output:
20.00 mA
Pressure
Source
Table 4-1. Recommended
Calibration Tasks
Transmitter
2051CD
2051CG
2051L
2051TG, Range 1-4
Bench Calibration Tasks
1. Set output configuration parameters:
a. Set the range points.
b. Set the output units.
c. Set the output type.
d. Set the damping value.
Field Calibration Tasks
1. Reconfigure parameters if necessary.
2. Zero trim the transmitter to compensate for
mounting effects or static pressure effects.
3. Optional: Perform an analog output trim.
(Accurate multimeter required)
2. Optional: Perform a sensor trim. (Accurate pressure
source required.)
2051TA
2051TG, Range 5
1. Set output configuration parameters:
a. Set the range points.
b. Set the output units.
c. Set the output type.
d. Set the damping value.
2. Optional: Perform a sensor trim if equipment
available (accurate absolute pressure source
required), otherwise perform the low trim value
section of the sensor trim procedure.
1. Reconfigure parameters if necessary.
2. Perform low trim value section of the sensor trim
procedure to correct for mounting position
effects.
3. Optional: Perform an analog output trim
(Accurate multimeter required)
NOTE
The 2051 has been carefully calibrated at the factory. Trimming adjusts the
position of the factory characterization curve. It is possible to degrade
performance of the transmitter if any trim is done improperly or with
inaccurate equipment.
NOTE
A HART communicator is required for all sensor and output trim procedures.
Rosemount 2051C Range 4 and Range 5 transmitters require a special
calibration procedure when used in differential pressure applications under
high static line pressure (see“Compensating for Line Pressure” on
page 4-13).
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Determining Calibration
Frequency
Calibration frequency can vary greatly depending on the application,
performance requirements, and process conditions. Use the following
procedure to determine calibration frequency that meets the needs of your
application.
1. Determine the performance required for your application.
2. Determine the operating conditions.
3. Calculate the Total Probable Error (TPE).
4. Calculate the stability per month.
5. Calculate the calibration frequency.
Sample Calculation For A Standard 2051C
Step 1: Determine the performance required for your application.
Required Performance:
0.30% of span
Step 2: Determine the operating conditions.
Transmitter:
2051CD, Range 2 [URL=250 inH2O(623 mbar)]
Calibrated Span:
150 inH2O (374 mbar)
Ambient Temperature Change:
± 50 °F (28 °C)
Line Pressure:
500 psig (34,5 bar)
Step 3: Calculate total probable error (TPE).
TPE =
2
2
2
( ReferenceAccuracy ) + ( TemperatureEffect ) + ( StaticPressureEffect ) = 0.189% of span
Where:
Reference Accuracy =
± 0.075% of span
Ambient Temperature Effect =
× URL- + 0.125⎞ per 50 °F = ± 0.1666% of span
± ⎛ 0.025
--------------------------------⎝
⎠
Span
Span Static Pressure Effect(1) =
0.1% reading per 1000 psi (69 bar) = ± 0.05% of span at maximum span
(1) Zero static pressure effect removed by zero trimming at line pressure.
Step 4: Calculate the stability per month.
0.100 × URL )- % of span for 2 years = ± 0.0069% of span per month
Stability = ± (-------------------------------------Span
Step 5: Calculate calibration frequency.
( 0.3% – 0.189% )
( Req. Performance – TPE )
Cal. Freq. = ----------------------------------------------------------------------- = --------------------------------------------- = 16months
0.0069%
Stability per Month
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Sample Calculation for 2051C with P8 option
(0.065% accuracy & 5-year stability)
Step 1: Determine the performance required for your application.
Required Performance:
0.30% of span
Step 2: Determine the operating conditions.
Transmitter:
2051CD, Range 2 [URL=250 inH2O(623 mbar)]
Calibrated Span:
150 inH2O (374 mbar)
Ambient Temperature Change:
± 50 °F (28 °C)
Line Pressure:
500 psig (34,5 bar)
Step 3: Calculate total probable error (TPE).
TPE =
2
2
2
( ReferenceAccuracy ) + ( TemperatureEffect ) + ( StaticPressureEffect ) = 0.185% of span
Where:
Reference Accuracy =
± 0.065% of span
Ambient Temperature Effect =
0.025 × URL
± ⎛ ---------------------------------- + 0.125⎞ per 50 °F = ± 0.1666% of span
⎝
⎠
Span
Span Static Pressure Effect(1) =
0.1% reading per 1000 psi (69 bar) = ± 0.05% of span at maximum span
(1) Zero static pressure effect removed by zero trimming at line pressure.
Step 4: Calculate the stability per month.
( 0.125 × URL )
Stability = ± --------------------------------------- % of span for 5 years = ± 0.0035% of span per month
Span
Step 5: Calculate calibration frequency.
( 0.3% – 0.185% )
( Req. Performance – TPE )
Cal. Freq. = ----------------------------------------------------------------------- = --------------------------------------------- = 32months
0.0035%
Stability per Month
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Rosemount 2051
Choosing a Trim
Procedure
00809-0100-4101, Rev AA
July 2008
To decide which trim procedure to use, you must first determine whether the
analog-to-digital section or the digital-to-analog section of the transmitter
electronics need calibration. Refer to Figure 4-1 and perform the following
procedure:
1. Connect a pressure source, a HART Communicator or AMS, and a
digital readout device to the transmitter.
2. Establish communication between the transmitter and the HART
Communicator.
3. Apply pressure equal to the upper range point pressure.
4. Compare the applied pressure to the pressure process variable valve on
the Process Variables menu on the HART Communicator or the Process
Variables screen in AMS. For instructions on how to access process
variables, see page 3-7 of Section 3: Configuration.
a. If the pressure reading does not match the applied pressure (with
high-accuracy test equipment), perform a sensor trim. See “Sensor
Trim Overview” on page 4-10 to determine which trim to perform.
5. Compare the Analog Output (AO) line, on the HART Communicator or
AMS, to the digital readout device.
If the AO reading does not match the digital readout device (with
high-accuracy test equipment), perform an analog output trim. See “Analog
Output Trim” on page 4-7.
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July 2008
ANALOG OUTPUT TRIM
Rosemount 2051
The Analog Output Trim commands allow you to adjust the transmitter’s
current output at the 4 and 20 mA (1 and 5 Vdc) points to match the plant
standards. This command adjusts the digital to analog signal conversion.
Figure 4-2. Output Trim
Digital-to-Analog Trim
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 2, 1
1-5 Vdc Fast Keys
1, 2, 3, 2, 1
To perform a digital-to-analog trim with a HART Communicator, perform the
following procedure.
1. From the HOME screen, enter the fast key sequence “Digital-to-Analog
Trim.” Select OK after setting the control loop to manual, see “Setting the
Loop to Manual” on page 3-2.
2. a. For 4-20 mA HART output, connect a reference meter to the
transmitter by either connecting the meter to the test terminals on the
terminal block, or shunting transmitter power through the meter at some
point in the loop.
b. For 1-5 Vdc Low Power HART output, connect a reference meter to
the Vout terminal.
3. Select OK after connecting the reference meter.
4. Select OK at the SETTING FLD DEV OUTPUT TO 4 MA (1 Vdc)
prompt. The transmitter outputs 4.0 mA.
5. Record the actual value from the reference meter, and enter it at the
ENTER METER VALUE prompt. The HART Communicator prompts you
to verify whether or not the output value equals the value on the
reference meter.
6. Select 1: Yes, if the reference meter value equals the transmitter output
value, or 2: No if it does not.
a. If 1 is selected: Yes, proceed to Step 7.
b. If 2 is selected: No, repeat Step 5.
7. Select OK at the SETTING FLD DEV OUTPUT TO 20 MA (5 Vdc)
prompt, and repeat Steps 5 and 6 until the reference meter value equals
the transmitter output value.
8. Select OK after the control loop is returned to automatic control.
4-7
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July 2008
Rosemount 2051
AMS
Right click on the device and select “Calibrate,” then “D/A Trim” from the
menu.
1. Click Next after setting the control loop to manual.
2. Click Next after connecting the reference meter.
3. Click Next at the “Setting fld dev output to 4mA (1 Vdc)” screen.
4. Record the actual value from the reference meter, and enter it at the
“Enter meter value” screen and click Next.
5. Select Yes, if the reference meter value equals the transmitter output
value, or No if it does not. Click Next.
a. If Yes is selected, proceed to Step 6.
b. If No is selected, repeat Step 4.
6. Click Next at the “Setting fld dev output to 20mA (5 Vdc)” screen.
7. Repeat Step 4 - Step 5 until the reference meter equals the transmitter
output value.
8. Select Next to acknowledge the loop can be returned to automatic
control.
9. Select Finish to acknowledge the method is complete.
Digital-to-Analog Trim
Using Other Scale
The Scaled D/A Trim command matches the 4 and 20 mA (1 and 5 Vdc)
points to a user selectable reference scale other than 4 and 20 mA (for
example, 2 to 10 volts if measuring across a 500 ohm load, or 0 to
100 percent if measuring from a Distributed Control System (DCS)). To
perform a scaled D/A trim, connect an accurate reference meter to the
transmitter and trim the output signal to scale, as outlined in the Output Trim
procedure.
NOTE
Use a precision resistor for optimum accuracy. If you add a resistor to the
loop, ensure that the power supply is sufficient to power the transmitter to a
20 mA output with additional loop resistance. Refer to “Power Supply for 4-20
mA HART” on page 2-27.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 2, 2
1-5 Vdc Fast Keys
1, 2, 3, 2, 2
AMS
Right click on the device and select “Calibrate,” then “Scaled D/A trim” from
the menu.
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July 2008
Rosemount 2051
1. Click Next after setting the control loop to manual.
2. Select Change to change scale, click Next.
3. Enter Set scale-Lo output value, click Next.
4. Enter Set scale-Hi output value, click Next.
5. Click Next to proceed with Trim.
6. Click Next after connecting the reference meter.
7. Click Next at the “Setting fld dev output to 4 mA” screen.
8. Record the actual value from the reference meter, and enter it at the
“Enter meter value” screen and click Next.
9. Select Yes, if the reference meter value equals the transmitter output
value, or No if it does not. Click Next.
a. If Yes is selected, proceed to Step 10.
b. If No is selected, repeat Step 8.
10. Click Next at the “Setting fld dev output to 20mA” screen.
11. Repeat Step 8 - Step 9 until the reference meter equals the transmitter
output value.
12. Select Next to acknowledge the loop can be returned to automatic
control.
13. Select Finish to acknowledge the method is complete.
Recall Factory Trim—
Analog Output
The Recall Factory Trim—Analog Output command allows the restoration of
the as-shipped factory settings of the analog output trim. This command can
be useful for recovering from an inadvertent trim, incorrect Plant Standard or
faulty meter. This command is only available with 4-20 mA output.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 4, 2
AMS
Right click on the device and select “Calibrate,” then “Recall Factory Trim”
from the menu.
1. Click Next after setting the control loop to manual.
2. Select “Analog output trim” under “Trim to recall” and click Next.
3. Click Next to acknowledge restoration of trim values is complete.
4. Select Next to acknowledge the loop can be returned to automatic
control.
5. Select Finish to acknowledge the method is complete.
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Reference Manual
Rosemount 2051
00809-0100-4101, Rev AA
July 2008
SENSOR TRIM
Sensor Trim Overview
Trim the sensor using either sensor or zero trim functions. Trim functions vary
in complexity and are application-dependent. Both trim functions alter the
transmitter’s interpretation of the input signal.
Zero trim is a single-point offset adjustment. It is useful for compensating for
mounting position effects and is most effective when performed with the
transmitter installed in its final mounting position. Since this correction
maintains the slope of the characterization curve, it should not be used in
place of a sensor trim over the full sensor range.
When performing a zero trim, ensure that the equalizing valve is open and all
wet legs are filled to the correct levels.
NOTE
Do not perform a zero trim on Rosemount 2051T Absolute pressure
transmitters. Zero trim is zero based, and absolute pressure transmitters
reference absolute zero. To correct mounting position effects on a 2051T
Absolute Pressure Transmitter, perform a low trim within the sensor trim
function. The low trim function provides an offset correction similar to the zero
trim function, but it does not require zero-based input.
Sensor trim is a two-point sensor calibration where two end-point pressures
are applied, and all output is linearized between them. Always adjust the low
trim value first to establish the correct offset. Adjustment of the high trim value
provides a slope correction to the characterization curve based on the low
trim value. The trim values allow you to optimize performance over your
specified measuring range at the calibration temperature.
Figure 4-3. Sensor Trim
Zero Trim
4-10
NOTE
The transmitter must be within three percent of true zero (zero-based) in order
to calibrate with zero trim function.
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 3, 1
1-5 Vdc Fast Keys
1, 2, 3, 3, 1
Calibrate the sensor with a HART Communicator using the zero trim function
as follows:
1. Vent the transmitter and attach a HART Communicator to the
measurement loop.
2. From the HOME screen, follow the fast key sequence “Zero Trim.”
3. Follow the commands provided by the HART Communicator to complete
the zero trim adjustment.
AMS
Right click on the device and select “Calibrate,” then “Zero trim” from the
menu.
1. Click Next after setting the control loop to manual.
2. Click Next to acknowledge warning.
3. Click Next after applying appropriate pressure to sensor.
4. Select Next to acknowledge the loop can be returned to automatic
control.
5. Select Finish to acknowledge the method is complete.
Sensor Trim
NOTE
Use a pressure input source that is at least three times more accurate than
the transmitter, and allow the input pressure to stabilize for ten seconds
before entering any values.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 3
1-5 Vdc Fast Keys
1, 2, 3, 3
To calibrate the sensor with a HART Communicator using the sensor trim
function, perform the following procedure:
1. Assemble and power the entire calibration system including a
transmitter, HART Communicator, power supply, pressure input source,
and readout device.
2. From the HOME screen, enter the fast key sequence under “Sensor
Trim.”
3. Select 2: Lower sensor trim. The lower sensor trim value should be the
sensor trim point that is closest to zero.
Examples:
Calibration: 0 to 100 "H2O - lower trim = 0, upper trim = 100
Calibration: -100 to 0 "H2O - lower trim = 0, upper trim = -100
Calibration: -100 to 100 "H2O - lower trim = -100 or 100,
upper trim = -100 or 100
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Rosemount 2051
NOTE
Select pressure input values so that lower and upper values are equal to or
outside the 4 and 20 mA (1 and 5 Vdc) points. Do not attempt to obtain
reverse output by reversing the high and low points. This can be done by
going to “Rerange” on page 3-9 of Section 3: Configuration. The transmitter
allows approximately five percent deviation.
4. Follow the commands provided by the HART Communicator to complete
the adjustment of the lower value.
5. Repeat the procedure for the upper value, replacing 2: Lower sensor trim
with 3: Upper sensor trim in Step 3.
AMS
Right click on the device and select “Calibrate,” then “Sensor trim” from the
menu.
1. Select “Lower sensor trim.” The lower sensor trim value should be the
sensor trim point that is closest to zero.
2. Click Next after setting the control loop to manual.
3. Click Next after applying appropriate pressure to sensor.
4. Select Next to acknowledge the loop can be returned to automatic
control.
5. Select Finish to acknowledge the method is complete.
6. Right click on the device and select “Calibrate,” select “Sensor trim” from
the menu.
7. Select “Upper sensor trim” and repeat steps 2-5.
Recall Factory Trim—
Sensor Trim
The Recall Factory Trim—Sensor Trim command allows the restoration of the
as-shipped factory settings of the sensor trim. This command can be useful
for recovering from an inadvertent zero trim of an absolute pressure unit or
inaccurate pressure source. This command is only available with 4-20 mA
output.
HART Communicator
4-20 mA Fast Keys
1, 2, 3, 4, 1
AMS
Right click on the device and select “Calibrate,” then “Recall Factory Trim”
from the menu.
1. Click Next after setting the control loop to manual.
2. Select “Sensor trim” under “Trim to recall” and click Next.
3. Click Next to acknowledge restoration of trim values is complete.
4. Select Next to acknowledge the loop can be returned to automatic
control.
5. Select Finish to acknowledge the method is complete.
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July 2008
Compensating for
Line Pressure
Rosemount 2051
Rosemount 2051 Range 4 and 5 pressure transmitters require a special
calibration procedure when used in differential pressure applications. The
purpose of this procedure is to optimize transmitter performance by reducing
the effect of static line pressure in these applications. The 2051 differential
pressure transmitters (Ranges 1, 2, and 3) do not require this procedure
because optimization occurs in the sensor.
Applying high static pressure to 2051 Range 4 and Range 5 pressure
transmitters causes a systematic shift in the output. This shift is linear with
static pressure; correct it by performing the Sensor Trim procedure on
page 4-11.
The following specifications show the static pressure effect for 2051 Range 4
and Range 5 transmitters used in differential pressure applications:
Zero Effect:
± 0.1% of the upper range limit per 1000 psi (69 bar) for line pressures
from 0 to 2000 psi (0 to 138 bar)
For line pressures above 2000 psi (138 bar), the zero effect error is ± 0.2%
of the upper range limit plus an additional ± 0.2% of upper range limit error
for each 1000 psi (69 bar) of line pressure above 2000 psi (138 bar).
Example: Line pressure is 3000 psi (3 kpsi). Zero effect error calculation:
± {0.2 + 0.2 x [3 kpsi - 2 kpsi]} = ± 0.4% of the upper range limit
Span Effect:
Correctable to ±0.2% of reading per 1000 psi (69 bar) for line pressures
from 0 to 3626 psi (0 to 250 bar)
The systematic span shift caused by the application of static line pressure
is -1.00% of reading per 1000 psi (69 bar) for Range 4 transmitters, and
-1.25% of reading per 1000 psi (69 bar) for Range 5 transmitters.
Use the following example to compute corrected input values.
Example
A Range 4 transmitter with model number 2051_CD4 will be used in a
differential pressure application where the static line pressure is 1200 psi
(83 bar). The transmitter output is ranged with 4 mA at 500 inH2O (1,2 bar)
and 20 mA at 1500 inH2O (3,7 bar).
To correct for systematic error caused by high static line pressure, first use
the following formulas to determine corrected values for the low trim and
high trim.
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July 2008
Rosemount 2051
Low Trim Value
LT = LRV - (S/100 x P/1000 x LRV)
Where:
LT =
Corrected Low Trim Value
LRV =
Lower Range Value
S=
Span shift per specification (as a percent of reading)
P=
Static Line Pressure in psi
In this example:
LRV =
500 inH2O (1.24 bar)
S=
-1.00%
P=
1200 psi
LT =
500 inH2O - (-1%/100 x 1200 psi/1000 x 500 inH2O)
LT =
506 inH2O
High Trim Value
HT = (URV - (S/100 x P/1000 x URV)
Where:
HT =
Corrected High Trim Value
URV =
Upper Range Value
S=
Span shift per specification (as a percent of reading)
P=
Static Line Pressure in psi
In this example:
URV =
1500 inH2O (3.74 bar)
S=
-1.00%
P=
1200 psi
HT =
1500 - (-1%/100 x 1200 psi/1000 x 1500 inH2O)
HT =
1518 inH2O
Complete the Sensor Trim procedure as described on page 4-11. In the
example above, at step 4, apply the nominal pressure value of 500 inH2O.
However, enter the calculated correct lower trim (LT) value of 506 inH2O with
the HART Communicator. Repeat the procedure for the upper value.
NOTE
The range values for the 4 and 20 mA (1 and 5 Vdc) points should be at the
nominal URV and LRV. In the example above, the values are 1500 inH2O and
500 inH2O respectively. Confirm the values on the HOME screen on the
HART Communicator. Modify, if needed, by following the steps in the Rerange
section on page 3-10.
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Reference Manual
00809-0100-4101, Rev AA
July 2008
Section 5
Rosemount 2051
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3
Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-8
Reassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-10
OVERVIEW
Table 5-1 provides summarized maintenance and troubleshooting
suggestions for the most common operating problems.
If you suspect malfunction despite the absence of any diagnostic messages
on the HART Communicator display, consider using Table 5-1 on page 5-2 to
identify any potential problem.
SAFETY MESSAGES
Warnings (
Procedures and instructions 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 ( ). Refer to
the following safety messages before performing an operation preceded by
this symbol.
)
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. Please review the
approvals section of the 2051 reference manual for any restrictions associated with a safe
installation.
• Before connecting a HART communicator in an explosive atmosphere, ensure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers when
power is applied to the unit.
Process leaks may cause harm or result in death.
• Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
www.rosemount.com
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Table 5-1. Rosemount 2051
Troubleshooting Table for 4-20
mA output
Symptom
Corrective Actions
Transmitter milliamp reading is zero
Verify power is applied to signal terminals
Check power wires for reversed polarity
Verify terminal voltage is 10.5 to 42.4 Vdc
Check for open diode across test terminal
Transmitter Not Communicating with
HART Communicator
Verify the output is between 4 and 20 mA or saturation levels
Verify terminal voltage is 10.5 to 42.4 Vdc
Verify clean DC Power to transmitter (Max AC noise 0.2 volts peak to peak)
Check loop resistance, 250 Ω minimum (PS voltage -transmitter voltage/loop current)
Have HART Communicator poll for all addresses
Transmitter milliamp reading is low or high
Verify applied pressure
Verify 4 and 20 mA range points
Verify output is not in alarm condition
Verify if 4 – 20 mA output trim is required
Transmitter will not respond to changes in
applied pressure
Check test equipment
Check impulse piping or manifold for blockage
Verify the transmitter is not in multidrop mode
Verify applied pressure is between the 4 and 20 mA set points
Verify output is not in alarm condition
Verify transmitter is not in Loop Test mode
Digital Pressure Variable reading is low or high
Check test equipment (verify accuracy)
Check impulse piping for blockage or low fill in wet leg
Verify transmitter is calibrated properly
Verify pressure calculations for application
Digital Pressure Variable reading is erratic
Check application for faulty equipment in pressure line
Verify transmitter is not reacting directly to equipment turning on/off
Verify damping is set properly for application
Milliamp reading is erratic
Verify power source to transmitter has adequate voltage and current
Check for external electrical interference
Verify transmitter is properly grounded
Verify shield for twisted pair is only grounded at one end
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July 2008
DIAGNOSTIC
MESSAGES
Rosemount 2051
In addition to the output, the LCD meter displays abbreviated operation, error,
and warning messages for troubleshooting the transmitter. Messages appear
according to their priority, with normal operating messages appearing last. To
determine the cause of a message, use a HART Communicator or AMS to
further interrogate the transmitter. A description of each LCD diagnostic
message follows.
Error
Error messages appear on the LCD display to inform you of serious problems
affecting the operation of the transmitter. The LCD displays an error message
until the error condition is corrected, and the analog output is driven to the
specified alarm level. No other transmitter information is displayed during an
alarm condition.
FAIL
The transmitter CPU board and the sensor module are incompatible. See
“Disassembly Procedures” on page 5-8.
Fail Module
The sensor module is disconnected or is malfunctioning. Verify that the
sensor module ribbon cable is connected to the back of the electronics
board. If the ribbon cable is properly connected, there is a problem within
the sensor module. Possible sources of problems include:
•
Pressure or temperature updates are not being received in the sensor
module.
•
A non-volatile memory fault that will effect transmitter
operation has been detected in the module by the memory verification
routine.
Some non-volatile memory faults are user-repairable. Use a HART
Communicator to diagnose the error and determine if it is repairable. Any
error message that ends in “FACTORY” is not repairable. In cases of non
user-repairable errors, you must replace the transmitter.
Fail Elect
The transmitter electronics board is malfunctioning due to an internal fault.
Some of the FAIL ELECT errors are user-repairable. Use a 275 HART
Communicator to diagnose the error and determine if it is repairable. Any
error message that ends in “FACTORY” is not repairable. In cases of non
user-repairable errors, you must replace the electronics board. See
“Disassembly Procedures” on page 5-3.
Fail Config
A memory fault has been detected in a location that could effect
transmitter operation, and is user-accessible. To correct this problem, use
a HART Communicator to interrogate and reconfigure the appropriate
portion of the transmitter memory.
Warnings
Warnings appear on the LCD display to alert you of user-repairable problems
with the transmitter, or current transmitter operations. Warnings appear
alternately with other transmitter information until the warning condition is
corrected or the transmitter completes the operation that warrants the warning
message.
5-3
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July 2008
Rosemount 2051
Press Limit
The process variable read by the transmitter is outside of the transmitter’s
range.
Temp Limit
The secondary temperature variable read by the transmitter is outside of
the transmitter’s range.
Curr Fixed
The transmitter is in multidrop mode. The analog output is not tracking
pressure changes.
Curr Saturd
The pressure read by the module is outside of the specified range, and the
analog output has been driven to saturation levels.
Loop Test
A loop test is in progress. During a loop test or 4–20 mA trim, the analog
output is set to a fixed value. The meter display alternates between the
current selected in milliamps and “LOOP TEST.”
Xmtr Info
A non-volatile memory fault has been detected in the transmitter memory
by the memory verification routine. The memory fault is in a location
containing transmitter information. To correct this problem, use a HART
Communicator to interrogate and reconfigure the appropriate portion of the
transmitter memory. This warning does not effect the transmitter operation.
Operation
Normal operation messages appear on the LCD meter to confirm actions or
inform you of transmitter status. Operation messages are displayed with other
transmitter information, and warrant no action to correct or alter the
transmitter settings.
Zero Pass
The zero value, set with the local zero adjustment button, has been
accepted by the transmitter, and the output should change to 4 mA
(1 Vdc).
Zero Fail
The zero value, set with the local zero adjustment button, exceeds the
maximum rangedown allowed for a particular range, or the pressure
sensed by the transmitter exceeds the sensor limits.
Span Pass
The span value, set with the local span adjustment button, has been
accepted by the transmitter, and the output should change to 20 mA
(5 Vdc).
Span Fail
The span value, set with the local span adjustment button, exceeds the
maximum rangedown allowed for a particular range, or the pressure
sensed by the transmitter exceeds the sensor limits.
5-4
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July 2008
Rosemount 2051
LOCAL DSBLD
This message appears during reranging with the integral zero and span
buttons and indicates that the transmitter local zero and span adjustments
have been disabled. The adjustments may have been disabled by the
transmitter security jumper on the transmitter circuit board or through
software commands from the HART Communicator. See “Security (Write
Protect)” on page 2-14 for information on the position of the security
jumper and information on software lockout.
Write Protect
This message appears if you attempt to change the transmitter
configuration data while the security jumper is in the ON position. See
“Security (Write Protect)” on page 2-14 for more information about the
security jumper.
HART Communicator Diagnostics
Table 5-2 is a list of messages used by the HART Communicator (HC) and
their corresponding descriptions.
Variable parameters within the text of a message are indicated with
<variable parameter>.
Reference to the name of another message is identified by
[another message].
Table 5-2. HART Communicator
Messages
Message
Description
1k snsr EEPROM
error-factory ON
1k snsr EEPROM
error-user-no out ON
Replace the transmitter
1k snsr EEPROM
error-user ON
4k micro EEPROM
error-factory ON
4k micro EEPROM
error-user-no out ON
4k micro EEPROM
error-user ON
4k snsr EEPROM
error-factory ON
4k snsr EEPROM
error-user ON
Add item for ALL device types
or only for this ONE device type.
Command Not Implemented
Communication Error
Use the HART communicator to reset the following
parameters: remote seal isolator, remote seal fill fluid,
flange material, o-ring material, transmitter type, remote
seal type, flange type, meter type, number of remote
seals.
Perform a full trim to recalibrate the transmitter.
Replace the electronics board.
Use the HART communicator to reset the message field.
Use the HART communicator to reset the following
parameters: units, range values, damping, analog output,
transfer function, tag, scaled meter values. Perform a D/A
trim to ensure that the error is corrected.
Replace the transmitter.
Use the HART communicator to reset the temperature
units and the calibration type.
Asks the user whether the hot key item being added
should be added for all device types or only for the type of
device that is connected.
The connected device does not support this function.
The communicator and the device are not communicating
correctly. Check all connections between the HART
Communicator and the device and resend the
information.
5-5
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July 2008
Rosemount 2051
Message
Description
Configuration memory not
compatible with connected
device
CPU board not initialized ON
The configuration stored in memory is incompatible with
the device to which a transfer has been requested.
CPU EEPROM write failure ON
Device Busy
Device Disconnected
Device write protected
Device write protected. Do you
still want to
shut off?
Display value of variable on
hotkey menu?
Download data from
configuration memory to device
Exceed field width
Exceed precision
Ignore next 50 occurrences of
status?
Illegal character
Illegal date
Illegal month
Illegal year
Incompatible CPU board and
module ON
Incomplete exponent
Incomplete field
Looking for a device
Local buttons operator error ON
Mark as read only variable on
hotkey menu?
Module EEPROM write failure
ON
No device configuration in
configuration memory
No Device Found
No hotkey menu available for
this device.
No pressure updates ON
No offline devices available.
No simulation devices available.
5-6
The electronics board is not initialized.
Replace the electronics board.
Message sent to electronics board from HART signal
failed. Replace the electronics board.
The connected device is busy performing another task.
The device failed to respond to a command. Check all
connections between the HART Communicator and the
device and resend the command.
Device is in write-protect mode. Data can not be written.
Device is in write-protect mode. Press YES to turn the
HART communicator off and lose the unsent data.
Asks whether the value of the variable should be
displayed adjacent to its label on the hotkey menu if the
item being added to the hotkey menu is a variable.
Press the SEND softkey to transfer information from the
communicator memory to the device.
Indicates that the field width for the current arithmetic
variable exceeds the device-specified description edit
format.
Indicates that the precision for the current arithmetic
variable exceeds the device-specified description edit
format.
Select YES to ignore the next 50 occurrences of device
status, or select no to display every occurrence.
An invalid character for the variable type was entered.
The day portion of the date is invalid.
The month portion of the date is invalid.
The year portion of the date is invalid.
Upgrade the electronics board or the sensor module to
the current revision.
The exponent of a scientific notation floating point
variable is incomplete.
The value entered is not complete for the variable type.
Polling for multidropped devices at addresses 1–15.
Illegal pressure applied during zero or span operation.
Repeat the process after verifying the correct pressures.
Asks whether the user should be allowed to edit the
variable from the hotkey menu if the item being added to
the hotkey menu is a variable.
Message sent to the module from the HART signal failed.
Replace the transmitter.
There is no configuration saved in memory available to
re-configure off-line or transfer to a device.
Poll of address zero fails to find a device, or poll of all
addresses fails to find a device if auto-poll is enabled.
There is no menu named “hotkey” defined in the device
description for this device.
No pressure updates being received from the sensor
module. Verify that the sensor module ribbon cable is
attached correctly. Or replace the transmitter.
There are no device descriptions available to be used to
configure a device offline.
There are no device descriptions available to simulate a
device.
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Message
Description
No temperature updates ON
No temperature updates being received from the sensor
module. Verify that the sensor module ribbon cable is
attached correctly. Or replace the transmitter.
There is no menu named “upload_variables” defined in
the device description for this device. This menu is
required for offline configuration.
The selected menu or edit display contains no valid items.
Appears when the user attempts to turn the HC off before
sending modified data or before completing a method.
There is unsent data for a previously connected device.
Press RETRY to send data, or press OK to disconnect
and lose unsent data.
There is no more memory available to store additional
hotkey items. Unnecessary items should be deleted to
make space available.
Requests permission to overwrite existing configuration
either by a device-to-memory transfer or by an offline
configuration. User answers using the softkeys.
Press the OK softkey. This message usually appears after
an error message from the application or as a result of
HART communications.
The edited value that was sent to a device was not
properly implemented. Restoring the device value returns
the variable to its original value.
Checksum of transmitter software has detected a fault.
Replace the electronics board.
Prompts user to press SAVE softkey to initiate a
device-to-memory transfer.
Data is being transferred from a device to configuration
memory.
Data is being transferred from configuration memory to a
device.
The sensor module electronics board is not initialized.
Replace the transmitter.
There are write-only variables which have not been set by
the user. These variables should be set or invalid values
may be sent to the device.
Press YES to send unsent data and turn the HC off. Press
NO to turn the HC off and lose the unsent data.
Command returns fewer data bytes than expected as
determined by the device description.
Device returns a command response indicating a fault
with the connected device.
The engineering units for this variable have been edited.
Send engineering units to the device before editing this
variable.
No UPLOAD_VARIABLES in ddl
for this device
No Valid Items
OFF KEY DISABLED
Online device disconnected
with unsent data. RETRY or OK
to lose data.
Out of memory for hotkey
configuration. Delete
unnecessary items.
Overwrite existing configuration
memory
Press OK...
Restore device value?
ROM checksum error ON
Save data from device to
configuration memory
Saving data to configuration
memory.
Sending data to device.
Sensor board not initialized ON
There are write only variables
which have not been edited.
Please edit them.
There is unsent data. Send it
before shutting off?
Too few data bytes received
Transmitter Fault
Units for <variable label> has
changed. Unit must be sent
before editing, or invalid data
will be sent.
Unsent data to online device.
SEND or LOSE data
Upgrade 275 software to access
XMTR function.
Continue with old description?
Use up/down arrows to change
contrast. Press DONE when
done.
There is unsent data for a previously connected device
which must be sent or thrown away before connecting to
another device.
The communicator does not contain the most recent 2051
Device Descriptors (DDs). Select YES to communicate
using the existing DDs. Select NO to abort
communication.
Gives direction to change the contrast of the HC display.
5-7
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Message
Description
Value out of range
The user-entered value is either not within the range for
the given type and size of variable or not within the
min/max specified by the device.
Either a read/write command indicates too few data bytes
received, transmitter fault, invalid response code, invalid
response command, invalid reply data field, or failed preor post-read method; or a response code of any class
other than SUCCESS is returned reading a particular
variable.
A variable related to this variable has been edited. Send
related variable to the device before editing this variable.
<message> occurred
reading/writing <variable label>
<variable label> has an
unknown value. Unit must be
sent before editing, or invalid
data will be sent.
DISASSEMBLY
PROCEDURES
Do not remove the instrument cover in explosive atmospheres when the
circuit is live.
Remove from Service
Follow these steps:
Remove Terminal Block
•
Follow all plant safety rules and procedures.
•
Isolate and vent the process from the transmitter before removing the
transmitter from service.
•
Remove all electrical leads and disconnect conduit.
•
Remove the transmitter from the process connection.
•
The Rosemount 2051C transmitter is attached to the process
connection by four bolts and two cap screws. Remove the bolts
and separate the transmitter from the process connection. Leave
the process connection in place and ready for re-installation.
•
The Rosemount 2051T transmitter is attached to the process by a
single hex nut process connection. Loosen the hex nut to
separate the transmitter from the process. Do not wrench on neck
of transmitter.
•
Do not scratch, puncture, or depress the isolating diaphragms.
•
Clean isolating diaphragms with a soft rag and a mild cleaning solution,
and rinse with clear water.
•
For the 2051C, whenever you remove the process flange or flange
adapters, visually inspect the PTFE o-rings. Replace the o-rings if they
show any signs of damage, such as nicks or cuts. Undamaged o-rings
may be reused.
Electrical connections are located on the terminal block in the compartment
labeled “FIELD TERMINALS.”
1. Remove the housing cover from the field terminal side.
2. Loosen the two small screws located on the assembly in the 9 o’clock
and 3 o’clock positions.
3. Pull the entire terminal block out to remove it.
See “Safety Messages” on page 5-1 for complete warning information.
5-8
Reference Manual
00809-0100-4101, Rev AA
July 2008
Remove the
Electronics Board
Rosemount 2051
The transmitter electronics board is located in the compartment opposite the
terminal side. To remove the electronics board perform the following
procedure:
1. Remove the housing cover opposite the field terminal side.
2. If you are disassembling a transmitter with a LCD display, loosen the two
captive screws that are visible on the right and left side of the meter
display.
3. Loosen the two captive screws that anchor the board to the housing. The
electronics board is electrostatically sensitive; observe handling
precautions for static-sensitive components. Use caution when removing
the LCD as there is an electronic pin connector that interfaces between
the LCD and electronics board. The two screws anchor the LCD display
to the electronics board and the electronics board to the housing.
4. Using the two captive screws, slowly pull the electronics board out of the
housing. The sensor module ribbon cable holds the electronics board to
the housing. Disengage the ribbon cable by pushing the connector
release.
Remove the Sensor
Module from the
Electronics Housing
1. Remove the electronics board. Refer to “Remove the Electronics Board”
on page 5-9.
IMPORTANT
To prevent damage to the sensor module ribbon cable, disconnect it from the
electronics board before you remove the sensor module from the electrical
housing.
2. Carefully tuck the cable connector completely inside of the internal black
cap.
NOTE
Do not remove the housing until after you tuck the cable connector completely
inside of the internal black cap. The black cap protects the ribbon cable from
damage that can occur when you rotate the housing.
3. Loosen the housing rotation set screw with a 5/64-inch hex wrench, and
loosen one full turn.
4. Unscrew the module from the housing, making sure the black cap and
sensor cable do not catch on the housing.
5-9
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
REASSEMBLY
PROCEDURES
1. Inspect all cover and housing (non-process wetted) O-rings and replace
if necessary. Lightly grease with silicone lubricant to ensure a good seal.
2. Carefully tuck the cable connector completely inside the internal black
cap. To do so, turn the black cap and cable counterclockwise one
rotation to tighten the cable.
3. Lower the electronics housing onto the module. Guide the internal black
cap and cable through the housing and into the external black cap.
4. Turn the module clockwise into the housing.
IMPORTANT
Make sure the sensor ribbon cable and internal black cap remain completely
free of the housing as you rotate it. Damage can occur to the cable if the
internal black cap and ribbon cable become hung up and rotate with the
housing.
5. Thread the housing completely onto the sensor module. The housing
must be no more than one full turn from flush with the sensor module to
comply with explosion proof requirements.
6. Tighten the housing rotation set screw using a 5/64-inch hex wrench.
Attach the
Electronics Board
1. Remove the cable connector from its position inside of the internal black
cap and attach it to the electronics board.
2. Using the two captive screws as handles, insert the electronics board
into the housing. Make sure the posts from the electronics housing
properly engage the receptacles on the electronics board. Do not force.
The electronics board should slide gently on the connections.
3. Tighten the captive mounting screws.
4. Replace the electronics housing cover. The transmitter covers must be
engaged metal-to-metal to ensure a proper seal and to meet
Explosion-Proof requirements.
Install the Terminal Block
1. Gently slide the terminal block into place, making sure the two posts from
the electronics housing properly engage the receptacles on the terminal
block.
2. Tighten the captive screws.
3. Replace the electronics housing cover. The transmitter covers must be
fully engaged to meet Explosion-Proof requirements.
Reassemble the 2051C
Process Flange
1. Inspect the sensor module PTFE o-rings. Undamaged o-rings may be
reused. Replace o-rings that show any signs of damage, such as nicks,
cuts, or general wear.
NOTE
If you are replacing the o-rings, be careful not to scratch the o-ring grooves or
the surface of the isolating diaphragm when removing the damaged o-rings.
2. Install the process connection. Possible options include:
See “Safety Messages” on page 5-1 for complete warning information.
5-10
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
a. Coplanar Process Flange:
•
Hold the process flange in place by installing the two alignment
screws to finger tightness (screws are not pressure retaining). Do not
overtighten as this will affect module-to-flange alignment.
•
Install the four 1.75-in. flange bolts by finger tightening them to the
flange.
b. Coplanar Process Flange with Flange Adapters:
•
Hold the process flange in place by installing the two alignment
screws to finger tightness (screws are not pressure retaining). Do not
overtighten as this will affect module-to-flange alignment.
•
Hold the flange adapters and adapter o-rings in place while installing
the four configurations, use four 2.88-in. bolts. For gage pressure
configurations, use two 2.88-in. bolts and two 1.75-in. bolts.
c. Manifold:
•
Contact the manifold manufacturer for the appropriate bolts and
procedures.
3. Tighten the bolts to the initial torque value using a crossed pattern. See
Table 5-3 for appropriate torque values.
Table 5-3. Bolt Installation
Torque Values
Bolt Material
Initial Torque Value
Final Torque Value
CS-ASTM-A445 Standard
300 in-lb. (34 N-m)
650 in-lb. (73 N-m)
316 SST—Option L4
150 in-lb. (17 N-m)
300 in-lb. (34 N-m)
ASTM-A-193-B7M—Option
L5
300 in-lb. (34 N-m)
650 in-lb. (73 N-m)
ASTM-A-193 Class 2, Grade
B8M—Option L8
150 in.-lb (17 N-m)
300 in.-lb (34 N-m)
NOTE
If you replaced the PTFE sensor module o-rings, re-torque the flange bolts
after installation to compensate for cold flow.
NOTE
After replacing o-rings on Range 1 transmitters and re-installing the process
flange, expose the transmitter to a temperature of 185 °F (85 °C) for two
hours. Then re-tighten the flange bolts in a cross pattern, and again expose
the transmitter to a temperature of 185 °F (85 °C) for two hours before
calibration.
Install the Drain/Vent
Valve
1. Apply sealing tape to the threads on the seat. Starting at the base of the
valve with the threaded end pointing toward the installer, apply two
clockwise turns of sealing tape.
2. Tighten the drain/vent valve to 250 in-lb. (28.25 N-m).
3. Take care to place the opening on the valve so that process fluid will
drain toward the ground and away from human contact when the valve is
opened.
5-11
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Rosemount 2051
5-12
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July 2008
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Appendix A
Reference Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . page A-1
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . page A-4
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-9
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-12
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-22
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-25
PERFORMANCE
SPECIFICATIONS
For zero based spans, reference conditions, silicone oil fill, SST materials,
Coplanar flange (2051C) or 1/2 in. - 14 NPT (2051T) process connections,
digital trim values range points. Applies to 4-20 mA HART output only unless
otherwise noted.
Conformance To
Specification (±3σ
(Sigma))
Technology leadership, advanced manufacturing techniques and statistical
process control ensure specification conformance to at least ±3σ.
Reference Accuracy(1)
Models(1)
Standard
Performance Option, P8
±0.075% of span
For spans less than 10:1, accuracy =
Ranges 2-5
2051C
Ranges 2-5
URL
± 0.025 + 0.005 ⎛ ---------------⎞ % of Span
⎝ Span⎠
Range 1
High Accuracy Option, P8
±0.065% of span
For spans less than 10:1, accuracy =
URL ⎞ % of Span
± 0.015 + 0.005 ⎛ -------------⎝ Span-⎠
±0.10% of span
For spans less than 15:1, accuracy =
URL ⎞ % of Span
± 0.025 + 0.005 ⎛ -------------⎝ Span-⎠
2051T
Ranges 1-4
±0.075% of span
For spans less than 10:1, accuracy =
Ranges 1-4
URL
± 0.0075 ⎛ ---------------⎞ % of Span
⎝ Span⎠
Range 5
±0.075% of span for spans greater than 5:1
2051L
Ranges 2-4
±0.075% of span
For spans less than 10:1, accuracy =
URL
± 0.025 + 0.005 ⎛ ---------------⎞ % of Span
⎝ Span⎠
(1) For FOUNDATION fieldbus transmitters, use calibrated range in place of span.
www.rosemount.com
High Accuracy Option, P8
±0.065% of span
For spans less than 10:1, accuracy =
URL
± 0.0075 ⎛ ---------------⎞ % of Span
⎝ Span⎠
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Long Term Stability
Models
Standard
Performance Option, P8
2051C(1)
Ranges 2-5 ±0.1% of URL for 2 years
±0.125% of URL for 5 years
2051CD
Range 1 ±0.2% of URL for 1 year
2051T(1)
Ranges 1-5 ±0.1% of URL for 2 years
±0.125% of URL for 5 years
(1) Measured at reference conditions after exposure to temperature changes of up to ±50 °F (28 °C), and line pressure changes up to 1000 psi
(6,9 mPa).
Dynamic Performance
4 - 20 mA HART(1)
1-5 Vdc HART Lower Power(1) Fieldbus(3)
Total Response Time (Td + Tc)(2):
2051C, Range 3-5: 115 milliseconds
Range 1: 270 milliseconds
Range 2: 130 milliseconds
2051T: 100 milliseconds
2051L: See Instrument Toolkit®
Dead Time (Td)
Update Rate
60 milliseconds (nominal)
22 times per second
152 milliseconds
307 milliseconds
152 milliseconds
152 milliseconds
See Instrument
Toolkit
97 milliseconds
22 times per second
(1) Dead time and update rate apply to all models and ranges; analog output only
(2) Nominal total response time at 75 °F (24 °C) reference conditions.
(3) Transmitter fieldbus output only, segment macro-cycle not included.
Typical HART Transmitter Response Time
Transmitter Output vs. Time
Pressure Released
Td
100%
Tc
Td = Dead Time
Tc = Time Constant
Response Time = Td +Tc
63.2% of Total
Step Change
36.8%
0%
Time
Line Pressure Effect per
1000 psi (6,9 MPa)
For line pressures above 2000 psi (13,7 MPa) and Ranges 4-5, see user manual (Rosemount publication number 00809-0100-4101).
Models
Line Pressure Effect
2051CD
Zero Error(1)
±0.1% of URL/1000 psi (68,9 bar) for line pressures from 0 to 2000 psi (0 to 13,7 MPa)
±0.5% of URL/1000 psi (68,9 bar)
Span Error
±0.1% of reading/1000 psi (68,9 bar)
±0.4% of reading/1000 psi (68,9 bar)
Ranges 2-3
Range 1
Ranges 2-3
Range 1
(1) Can be calibrated out at line pressure.
A-2
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Ambient Temperature Effect per 50°F (28°C)
Models
Ambient Temperature Effect
2051C
Ranges 2-5 ±(0.025% URL + 0.125% span) from 1:1 to 5:1
±(0.05% URL + 0.25% span) from 5:1 to 100:1
Range 1 ±(0.2% URL + 0.5% span) from 1:1 to 50:1
2051T
2051L
Range 2-4 ±(0.05% URL + 0.25% span) from 1:1 to 30:1
±(0.07% URL + 0.25% span) from 30:1 to 100:1
Range 1 ±(0.05% URL + 0.25% span) from 1:1 to 10:1
±(0.10% URL + 0.25% span) from 10:1 to 100:1
Range 5 ±(0.2% URL + 0.3% span)
See Instrument Toolkit
Mounting Position
Effects
Models
Mounting Position Effects
2051C
2051T
2051L
Zero shifts up to ±1.25 inH2O (3,1 mbar), which can be calibrated out. No span effect.
Zero shifts up to ±2.5 inH2O (6,2 mbar), which can be calibrated out. No span effect.
With liquid level diaphragm in vertical plane, zero shift of up to 1 inH2O (2,49 mbar). With diaphragm in
horizontal plane, zero shift of up to 5 inH2O (12,43 mbar) plus extension length on extended units. Zero
shifts can be calibrated out. No span effect.
Vibration Effect
Less than ±0.1% of URL when tested per the requirements of IEC60770-1
field or pipeline with high vibration level (10-60 Hz 0.21mm displacement peak
amplitude / 60-2000 Hz 3g).
Power Supply Effect
Less than ±0.005% of calibrated span per volt.
Electromagnetic
Compatibility (EMC)
Meets all relevant requirements of EN 61326 and NAMUR NE-21.
Transient Protection
(Option Code T1)
Meets IEEE C62.41, Category Location B
6 kV crest (0.5 μs - 100 kHz)
3 kV crest (8 × 20 microseconds)
6 kV crest (1.2 × 50 microseconds)
A-3
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
FUNCTIONAL
SPECIFICATIONS
Range and Sensor Limits
Range
2051CD, 2051CG, 2051L
1
2
3
4
5
Range and Sensor Limits
Lower (LRL)
Minimum Span
Upper (URL)
2051C Differential
2051C Gage(1)
2051L Differential
2051L Gage(1)
0.5 inH2O
(1,2 mbar)
2.5 inH2O
(6,2 mbar)
10 inH2O
(24,9 mbar)
3 psi
(0,207 bar)
20 psi
(1,38 bar)
25 inH2O
(62,3 mbar)
250 inH2O
(0,62 bar)
1000 inH2O
(2,49 bar)
300 psi
(20,6 bar)
2000 psi
(137,9 bar)
–25 inH2O
(–62,1 mbar)
–250 inH2O
(–0,62 bar)
-1000 inH2O
(-2,49 bar)
-300 psi
(-20,6 bar)
-2000 psi
(-137,9 bar)
–25 inH2O
(–62,1 mbar)
–250 inH2O
(–0,62 bar)
–393 inH2O
(–979 mbar)
–14.2 psig
(–979 mbar)
–14.2 psig
(–979 mbar)
N/A
N/A
–250 inH2O
(–0,62 bar)
–1000 inH2O
(–2,49 bar)
–300 psi
(–20,7 bar)
N/A
–250 inH2O
(–0,62 bar)
–393 inH2O
(–979 mbar)
–14.2 psig
(–979 mbar)
N/A
(1) Assumes atmospheric pressure of 14.7 psig.
Range
2051T
1
2
3
4
5
Range and Sensor Limits
Minimum
Span
Upper
(URL)
Lower
(LRL) (Abs)
Lower(1)
(LRL) (Gage)
0.3 psi
(20,6 mbar)
1.5 psi
(0,103 bar)
8 psi
(0,55 bar)
40 psi
(2,76 bar)
2000 psi
(137,9 bar)
30 psi
(2,06 bar)
150 psi
(10,3 bar)
800 psi
(55,2 bar)
4000 psi
(275,8 bar)
10000 psi
(689,4 bar)
0 psia
(0 bar)
0 psia
(0 bar)
0 psia
(0 bar)
0 psia
(0 bar)
0 psia
(0 bar)
–14.7 psig
(–1,01 bar)
–14.7 psig
(–1,01 bar)
–14.7 psig
(–1,01 bar)
–14.7 psig
(–1,01 bar)
–14.7 psig
(–1,01 bar)
(1) Assumes atmospheric pressure of 14.7 psig.
Service
Liquid, gas, and vapor applications
Protocols
4–20 mA HART (Output Code A)
Output
Two-wire 4–20 mA, user-selectable for linear or square root output. Digital
process variable superimposed on 4–20 mA signal, available to any host
that conforms to the HART protocol.
Power Supply
External power supply required. Standard transmitter operates on 10.5 to
42.4 V dc with no load.
Turn-On Time
Performance within specifications less than 2.0 sections after power is
applied to the transmitter.
A-4
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Load Limitations
Maximum loop resistance is determined by the voltage level of the external
power supply, as described by:
Table A-1.
Maximum Loop Resistance = 43.5 * (Power Supply Voltage – 10.5)
Load (Ohms)
1387
1000
500
Operating
Region
0
10.5
20
30
Voltage (V dc)
42.4
The HART communicator requires a minimum
loop resistance of 250Ω for communication.
FOUNDATION™ fieldbus (Output Code F)
Power Supply
External power supply required; transmitters operate on 9.0 to 32.0 V dc
transmitter terminal voltage.
Current Draw
17.5 mA for all configurations (including LCD display option)
Turn-On Time
Performance within specifications less than 20.0 sections after power is
applied to the transmitter.
FOUNDATION fieldbus Function Block Execution Times
Block
Execution Time
Resource
Transducer
LCD Block
Analog Input 1, 2
PID
FOUNDATION fieldbus Parameters
Schedule Entries
Links
Virtual Communications Relationships
(VCR)
30 milliseconds
45 milliseconds
7 (max.)
20 (max.)
12 (max.)
Standard Function Blocks
Resource Block
•
Contains hardware, electronics, and diagnostic information.
Transducer Block
• Contains actual sensor measurement data including the sensor
diagnostics and the ability to trim the pressure sensor or recall factory
defaults.
A-5
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
LCD Block
• Configures the local display.
2 Analog Input Blocks
• Processes the measurements for input into other function blocks. The
output value is in engineering units or custom and contains a status
indicating measurement quality.
PID Block
• Contains all logic to perform PID control in the field including cascade
and feedforward.
Backup Link Active Scheduler (LAS)
The transmitter can function as a Link Active Scheduler if the current link
master device fails or is removed from the segment.
1-5 Vdc HART Low Power (Output Code M)
Output
Three wire 1–5 Vdc output, user-selectable for linear or square root output.
Digital process variable superimposed on voltage signal, available to any
host conforming to the HART protocol.
Power Supply
External power supply required. Standard transmitter operates on 9 to 28
Vdc with no load.
Power Consumption
3.0 mA, 27–84 mW
Output Load
100 kΩ or greater
Turn-On Time
Performance within specifications less than 2.0 sections after power is
applied to the transmitter.
Overpressure Limits
Transmitters withstand the following limits without damage:
2051C
• Ranges 2–5: 3626 psig (250 bar)
4500 psig (310,3 bar) for option code P9
• Range 1: 2000 psig (137,9 bar)
2051T
• Range 1: 750 psi (51,7 bar)
• Range 2: 1500 psi (103,4 bar)
• Range 3: 1600 psi (110,3 bar)
• Range 4: 6000 psi (413,7 bar)
• Range 5: 15000 psi (1034,2 bar)
A-6
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051L
Limit is flange rating or sensor rating, whichever is lower (see Table A-2).
Table A-2. 2051L Flange Rating
Standard
Type
CS Rating SST Rating
ANSI/ASME
Class 150
285 psig
275 psig
ANSI/ASME
Class 300
740 psig
720 psig
At 100 °F (38 °C), the rating decreases with
increasing temperature.
DIN
PN 10–40
40 bar
40 bar
DIN
PN 10/16
16 bar
16 bar
At 248 °F (120 °C), the rating decreases
with increasing temperature.
Static Pressure Limit
2051CD
• Operates within specifications between static line pressures of -14.2 psig
(0.034 bar) and 3626 psig (250 bar)
• For Option Code P9, 4500 psig (310,3 bar)
• Range 1: 0.5 psia to 2000 psig (34 mbar and 137,9 bar)
Burst Pressure Limits
2051C Coplanar or traditional process flange
• 10000 psig (689,5 bar)
2051T
• Ranges 1–4: 11000 psi (758,4 bar)
• Range 5: 26000 psi (1792,64 bar)
Temperature Limits
Ambient
–40 to 185 °F (–40 to 85 °C)
With LCD display(1): –40 to 175 °F (–40 to 80 °C)
Storage
–50 to 230 °F (–46 to 110 °C)
With LCD display: –40 to 185 °F (–40 to 85 °C)
(1) LCD display may not be readable and LCD updates will be slower
at temperatures below -4 °F (-20 °C).
Process Temperature Limits
At atmospheric pressures and above.
Table A-3. 2051 Process Temperature Limits
2051C
Silicone Fill Sensor(1)
with Coplanar Flange
–40 to 250 °F (–40 to 121 °C)(2)
with Traditional Flange
–40 to 300 °F (–40 to 149 °C)(2)
with Level Flange
–40 to 300 °F (–40 to 149 °C)(2)
with 305 Integral Manifold –40 to 300 °F (–40 to 149 °C)(2)
Inert Fill Sensor(1)
0 to 185 °F (–18 to 85 °C)(3)
2051T (Process Fill Fluid)
Silicone Fill Sensor(1)
–40 to 250 °F (–40 to 121 °C)(2)
(1)
Inert Fill Sensor
–22 to 250 °F (–30 to 121 °C)(2)
2051L Low-Side Temperature Limits
Silicone Fill Sensor(1)
–40 to 250 °F (–40 to 121 °C)(2)
A-7
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Table A-3. 2051 Process Temperature Limits
Inert Fill Sensor(1)
0 to 185 °F (–18 to 85 °C) (2)
2051L High-Side Temperature Limits (Process Fill Fluid)
Syltherm® XLT
D.C. Silicone 704®
D.C. Silicone 200
Inert
Glycerin and Water
Neobee M-20®
Propylene Glycol and
Water
–100 to 300 °F (–73 to 149 °C)
32 to 400 °F (0 to 205 °C)
–40 to 400 °F (–40 to 205 °C)
–50 to 350 °F (–45 to 177 °C)
0 to 200 °F (–18 to 93 °C)
0 to 400 °F (–18 to 205 °C)
0 to 200 °F (–18 to 93 °C)
(1) Process temperatures above 185 °F (85 °C) require derating
the ambient limits by a 1.5:1 ratio.
(2) 220 °F (104 °C) limit in vacuum service; 130 °F (54 °C) for
pressures below 0.5 psia.
(3) 160 °F (71 °C) limit in vacuum service.
Humidity Limits
0–100% relative humidity
Volumetric Displacement
Less than 0.005 in3 (0,08 cm3)
Damping
Analog output response to a step input change is user-selectable from 0 to
25.6 seconds for one time constant. This software damping is in addition to
sensor module response time.
Failure Mode Alarm
If self-diagnostics detect a sensor or microprocessor failure, the analog signal
is driven either high or low to alert the user. High or low failure mode is
user-selectable with a jumper on the transmitter. The values to which the
transmitter drives its output in failure mode depend on whether it is
factory-configured to standard or NAMUR-compliant operation. The values for
each are as follows:
Standard Operation
Output Code
A
M
Linear Output
3.9 ≤ I ≤ 20.8
0.97 ≤ V ≤ 5.2
Fail High
I ≥ 21.75 mA
V ≥ 5.4 V
Fail Low
I ≤ 3.75 mA
V ≤ 0.95V
NAMUR-Compliant Operation
Output Code
A
Linear Output
3.8 ≤ I ≤ 20.5
Fail High
I ≥ 22.5 mA
Fail Low
I ≤ 3.6 mA
Output Code F
If self-diagnostics detect a gross transmitter failure, that information gets
passed as a status along with the process variable.
A-8
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
PHYSICAL
SPECIFICATIONS
Electrical Connections
1
Process Connections
2051C
• 1/4–18 NPT on 21/8-in. centers
• 1/2–14 NPT and RC 1/2 on 2-in.(50.8mm), 21/8-in. (54.0 mm), or 21/4-in.
(57.2mm) centers (process adapters)
/2–14 NPT, G1/2, and M20 × 1.5 (CM20) conduit.
2051T
• 1/2–14 NPT female
• G1/2 A DIN 16288 Male (available in SST for Range 1–4 transmitters only)
• Autoclave type F-250-C (Pressure relieved 9/16–18 gland thread; 1/4 OD
high pressure tube 60° cone; available in SST for Range 5 transmitters
only)
2051L
• High pressure side: 2-in.(50.8mm), 3-in. (72 mm), or 4-in. (102mm), ASME
B 16.5 (ANSI) Class 150 or 300 flange;
50, 80 or 100 mm, DIN 2501 PN 40 or 10/16 flange
• Low pressure side: 1/4–18 NPT on flange, 1/2–14 NPT on process adapter
2051C Process Wetted
Parts
Drain/Vent Valves
316 SST or Alloy C-276
Process Flanges and Adapters
Plated carbon steel, SST CF-8M (cast version of 316 SST, material per
ASTM-A743), or CW12MW (cast version of Alloy C-276)
Wetted O-rings
Glass-filled PTFE or Graphite-filled PTFE
Process Isolating Diaphragms
316L SST or Alloy C-276
2051T Process Wetted
Parts
Process Connections
• 316L SST or Alloy C-276
Process Isolating Diaphragms
• 316L SST or Alloy C-276
2051L Process Wetted
Parts
Flanged Process Connection (Transmitter High Side)
Process Diaphragms, Including Process Gasket Surface
• 316L SST or Alloy C-276
Extension
• CF-3M (Cast version of 316L SST, material per ASTM-A743), or Cast
C-276. Fits schedule 40 and 80 pipe.
Mounting Flange
• Zinc-cobalt plated CS or SST
A-9
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Reference Process Connection (Transmitter Low Side)
Isolating Diaphragms
• 316L SST or Alloy C-276
Reference Flange and Adapter
• CF-8M (Cast version of 316 SST, material per ASTM-A743)
Non-Wetted Parts for
2051C/T/L
Electronics Housing
Low-copper aluminum or CF-8M (Cast version of 316 SST). Enclosure Type
4X, IP 65, IP 66, IP68
Coplanar Sensor Module Housing
CF-3M (Cast version of 316L SST)
Bolts
ASTM A449, Type 1 (zinc-cobalt plated carbon steel)
ASTM F593G, Condition CW1 (Austenitic 316 SST)
ASTM A193, Grade B7M (zinc plated alloy steel)
Sensor Module Fill Fluid
Silicone oil (D.C. 200) or Fluorocarbon oil (Halocarbon or Fluorinert® FC-43
for 2051T)
Process Fill Fluid (2051L only)
Syltherm XLT, D.C. Silicone 704,
D.C. Silicone 200, inert, glycerin and water, Neobee M-20 or propylene glycol
and water
Paint
Polyurethane
Cover O-rings
Buna-N
A-10
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Shipping Weights
Table A-4. Transmitter Weights without Options
Transmitter
lb. (kg)
2051C
2051L
2051T
4.9 (2,2)
Table A-5 below
3.1 (1,4)
Table A-5. 2051L Weights without Options
Flange
2-in., 150
3-in., 150
4-in., 150
2-in., 300
3-in., 300
4-in., 300
DN 50/PN 40
DN 80/PN 40
DN 100/
PN 10/16
DN 100/
PN 40
Flush
lb. (kg)
2-in. Ext.
lb (kg)
4-in. Ext.
lb (kg)
6-in. Ext.
lb (kg)
12.5 (5,7)
17.5 (7,9)
23.5 (10,7)
17.5 (7,9)
22.5 (10,2)
32.5 (14,7)
13.8 (6,2)
19.5 (8,8)
17.8 (8,1)
—
19.5 (8,8)
26.5 (12,0)
—
24.5 (11,1)
35.5 (16,1)
—
21.5 (9,7)
19.8 (9,0)
—
20.5 (9,3)
28.5 (12,9)
—
25.5 (11,6)
37.5 (17,0)
—
22.5 (10,2)
20.8 (9,5)
—
21.5 (9,7)
30.5 (13,8)
—
26.5 (12,0)
39.5 (17,9)
—
23.5 (10,6)
21.8 (9,9)
23.2 (10,5)
25.2 (11,5)
26.2 (11,9)
27.2 (12,3)
Table A-6. Transmitter Options Weights
Code
J, K, L, M
M5
B4
B1 B2 B3
B7 B8 B9
BA, BC
H2
H3
H4
H7
FC
FD
FA
FB
FP
FQ
Option
Add
lb (kg)
Stainless Steel Housing
3.9 (1,8)
LCD display for Aluminum Housing
0.5 (0,2)
SST Mounting Bracket for Coplanar Flange 1.0 (0,5)
Mounting Bracket for Traditional Flange
2.3 (1,0)
Mounting Bracket for Traditional Flange
2.3 (1,0)
SST Bracket for Traditional Flange
2.3 (1,0)
Traditional Flange
2.6 (1,2)
Traditional Flange
3.0 (1,4)
Traditional Flange
3.0 (1,4)
Traditional Flange
2.7 (1,2)
Level Flange—3 in., 150
12.7 (5,8)
Level Flange—3 in., 300
15.9 (7,2)
Level Flange—2 in., 150
8.0 (3,6)
Level Flange—2 in., 300
8.4 (3,8)
DIN Level Flange, SST, DN 50, PN 40
7.8 (3,5)
DIN Level Flange, SST, DN 80, PN 40
12.7 (5,8)
A-11
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
ORDERING
INFORMATION
Model
Transmitter Type (Select One)
2051C
Pressure Transmitter
•
•
Model
Measurement Type
CD
CG
Differential
Gage
•
—
—
•
CD
CG
•
•
•
•
•
•
•
•
•
•
CD
CG
•
•
•
•
D
G
Code
1
2
3
4
5
Code
A
M
F
Code
2
3(1)
5
7(1)
8(1)
0
Pressure Ranges (Range/Min. Span)
2051CD
–25 to 25 inH2O/0.5 inH2O
(–62,2 to 62,2 mbar/1,2 mbar)
–250 to 250 inH2O/2.5 inH2O
(–623 to 623 mbar/6,2 mbar)
–1000 to 1000 inH2O/10 inH2O
(–2,5 to 2,5 bar/25 mbar)
–300 to 300 psi/3 psi
(–20,7 to 20,7 bar/0,2 bar)
–2000 to 2000 psi/20 psi
(–137,9 to137,9 bar/1,4 bar)
4–20 mA with Digital Signal Based on HART Protocol
Low-Power, 1–5 V dc with Digital Signal Based on HART Protocol
FOUNDATION fieldbus Protocol
Materials of Construction
Process Flange Type
Flange Material
Drain/Vent
Coplanar
SST
SST
Coplanar
Cast C-276
Alloy C-276
Coplanar
Plated CS
SST
Coplanar
SST
Alloy C-276
Coplanar
Plated CS
Alloy C-276
Alternate Process Connection (Requires selecting Flange, Manifold, or Primary Element option code, see page
A-13)
Isolating Diaphragm
2(1)
3(1)
Code
316L SST
Alloy C-276
Code
1
2
Code
A
B
D
J
K
M
A-12
2051CG
–25 to 25 inH2O/0.5 inH2O
(–62,1 to 62,2 mbar/1,2 mbar)
–250 to 250 inH2O/2.5 inH2O
(–623 to 623 mbar/6,2 mbar)
–393 to 1000 inH2O/10 inH2O
(–0,98 to 2,5 bar/25 mbar)
–14.2 to 300 psi/3 psi
(–0,98 to 20,7 bar/0,2 bar)
–14.2 to 2000 psig/20 psi
(–0,98 to 137,9 bar/1,4 bar)
Output
Code
A
B
CD
CG
•
•
CD
CG
•
•
•
•
•
•
•
•
•
•
•
•
CD
CG
•
•
•
•
•
•
•
•
CD
CG
•
•
•
•
CD
CG
•
•
•
•
•
•
•
•
•
•
•
•
O-ring
Glass-filled PTFE
Graphite-filled PTFE
Fill Fluid
Silicone
Inert fill (Halocarbon)
Housing Material
Conduit Entry Size
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
SST (consult factory for availability)
SST (consult factory for availability)
SST (consult factory for availability)
½–14 NPT
M20 × 1.5 (CM20)
G½
½–14 NPT
M20 × 1.5 (CM20)
G½
Reference Manual
00809-0100-4101, Rev AA
July 2008
Code
Rosemount 2051
Options
CD
CG
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
—
—
•
•
•
—
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
(2)
Alternate Process Connection: Flange
H2
Traditional Flange, 316 SST, SST Drain/Vent
H3(1)
Traditional Flange, Cast C-276, Alloy C-276 Drain/Vent
H7(1)
Traditional Flange, 316 SST, Alloy C-276 Drain/Vent
HJ
DIN Compliant Traditional Flange, SST, 7/16 in. Adapter/Manifold Bolting
HK(3)
DIN Compliant Traditional Flange, SST, 10 mm Adapter/Manifold Bolting
HL
DIN Compliant Traditional Flange, SST, 12mm Adapter/Manifold Bolting
FA
Level Flange, SST, 2 in., ANSI Class 150, Vertical Mount
FB
Level Flange, SST, 2 in., ANSI Class 300, Vertical Mount
FC
Level Flange, SST, 3 in., ANSI Class 150, Vertical Mount
FD
Level Flange, SST, 3 in., ANSI Class 300, Vertical Mount
FP
DIN Level Flange, SST, DN 50, PN 40, Vertical Mount
FQ
DIN Level Flange, SST, DN 80, PN 40, Vertical Mount
Alternate Process Connection: Manifold(2)(4)
S5
Assemble to Rosemount 305 Integral Manifold
S6
Assemble to Rosemount 304 Manifold or Connection System
Alternate Process Connection: Primary Element(2)(4)
S4(5)
Assemble to Rosemount Primary Element
S3
Assemble to Rosemount 405 Primary Element
Diaphragm Seal Assemblies(4)
S1(6)
Assemble to one Rosemount 1199 diaphragm seal
S2(7)
Assemble to two Rosemount 1199 diaphragm seals
Mounting Brackets
B1(8)
Traditional Flange Bracket for 2-in. Pipe Mounting, CS Bolts
B2(8)
Traditional Flange Bracket for Panel Mounting, CS Bolts
B3(8)
Traditional Flange Flat Bracket for 2-in. Pipe Mounting, CS Bolts
B4(9)
Coplanar Flange Bracket for 2-in. Pipe or Panel Mounting, all SST
B7(8)
B1 Bracket with Series 300 SST Bolts
B8(8)
B2 Bracket with Series 300 SST Bolts
B9(8)
B3 Bracket with Series 300 SST Bolts
BA(8)
SST B1 Bracket with Series 300 SST Bolts
BC(8)
SST B3 Bracket with Series 300 SST Bolts
Product Certifications
E1(10)
ATEX Flameproof
E2(10)
INMETRO Flameproof (consult factory for availability)
E3(10)
China Flameproof (consult factory for availability)
E4(10)
TIIS Flameproof (consult factory for availability)
E5
FM Explosion-proof, Dust Ignition-proof
E6
CSA Explosion-proof, Dust Ignition-proof, Division 2
E7
IECEx Flameproof
EP(10)
Korea (KOSHA) Flameproof Approval (consult factory for availability)
India (CCOE) Flameproof Approval (consult factory for availability)
EW(10)
GOST Explosion-proof (consult factory for availability)
EM(10)
ATEX Intrinsic Safety
I1
I2(10)
INMETRO Intrinsic Safety (consult factory for availability)
I3(10)
China Intrinsic Safety (consult factory for availability)
I4(10)
TIIS Intrinsic Safety (consult factory for availability)
I5
FM Intrinsically Safe, Division 2
I6
CSA Intrinsically Safe
I7(10)
IECEx Intrinsic Safety
IA(11)
ATEX FISCO Intrinsic Safety
IB(11)
INMETRO FISCO Intrinsic Safety (consult factory for availability)
ID(11)
TIIS FISCO Intrinsic Safety (consult factory for availability)
IE(11)
FM FISCO Intrinsically Safe
•
•
•
•
A-13
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
IF(11)
CSA FISCO Intrinsically Safe
IG(11)
IECEx FISCO Intrinsically Safe
IP(10)
Korea (KOSHA) Instrinsic Safety (consult factory for availability)
IM(10)
GOST Intrinsically Safe (consult factory for availability)
IW(10)
India (CCOE) Intrinsic Safety Approval (consult factory for availability)
K1(10)
ATEX Flameproof, Intrinsic Safety, Type n, Dust
K2(10)
INMETRO Flameproof, Intrinsic Safety, Type n (consult factory for availability)
K4(10)
TIIS Flameproof, Intrinsic Safety (consult factory for availability)
K5
FM Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K6
CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K7(10)
IECEx Flameproof, Intrinsic Safety, Type n
KA
ATEX and CSA Flameproof, Intrinsically Safe, Division 2
KB
FM and CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
KC
FM and ATEX Explosion-proof, Intrinsically Safe, Division 2
KD(10)
FM, CSA, and ATEX Explosion-proof, Intrinsically Safe
N1(10)
ATEX Type n
N7(10)
IECEx Type n
ND
ATEX Dust
Bolting Configurations
L4
Austenitic 316 SST Bolts
L5
ASTM A 193, Grade B7M Bolts
L8
ASTM A 193 Class 2, Grade B8M Bolts
Digital Display
M5
LCD display
Special Configuration (Hardware)
D4(12)
Zero and Span Hardware Adjustments
1
DF(13)
/2-14 NPT Flange Adapters
(14)
D9
JIS Process Connection-RC 1/4 Flange with RC 1/2 Flange Adapter
V5(15)
External Ground Screw Assembly
Performance
P8(16)
0.065% accuracy and 5 year stability
Terminal Blocks
T1
Transient Protection Terminal Block
Special Configuration (Software)
C1(17)
Custom Software Configuration (Requires completed Configuration Data Sheet)
C4(17)(18) Analog Output Levels Compliant with NAMUR Recommendation NE 43, Alarm High
CN(17)(18) Analog Output Levels Compliant with NAMUR Recommendation NE 43 Alarm Low
Special Procedures
P1
Hydrostatic Testing with Certificate
P2(19)
Cleaning for Special Service
P9
4500 psig (310 bar) static pressure limit (Ranges 2-5 only)
P3(19)
Cleaning for <1 PPM Chlorine/Fluorine
Special Certifications
Q4
Calibration Certificate
Q8
Material Traceability Certification per EN 10204 3.1.B
QS(17)
Prior-use certificate of FMEDA data
Q16(20)
Surface finish certification for sanitary remote seals
QP
Calibration certification and tamper evident seal
QZ(20)
Remote Seal System Performance Calculation Report
Typical Model Number:
2051C D
2
A
2
2
A
1
A
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
B4 M5
(1) Materials of Construction comply with recommendations per NACE MR0175/ISO 15156 for sour oil field production environments. Environmental limits apply
to certain materials. Consult latest standard for details. Selected materials also conform to NACE MR0103 for sour refining environments.
(2) Requires 0 code in Materials of Construction for Alternate Process Connection.
(3) Not valid with optional code P9 for 4500psi Static Pressure.
(4) “Assemble-to” items are specified separately and require a completed model number.
(5) Process Flange limited to Coplanar (codes 2, 3, 5, 7, 8) or Traditional (H2, H3, H7).
A-14
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
(6) Not valid with optional code D9 for RC1/2 Adaptors.
(7) Not valid with optional codes DF & D9 for Adaptors.
(8) Requires option in the Alternate Process Connection: Flange section.
(9) Requires Coplanar flange.
(10) Not available with Low Power output code M.
(11) Only valid with FOUNDATION fieldbus output code F.
(12) Not available with FOUNDATION fieldbus output code F.
(13) Not valid with Alternate Process Connection options S3, S4, S5, S6.
(14) Not available with Alternate Process Connection: DIN Flanges and Level Flanges.
(15) The V5 option is not needed with the T1 option; external ground screw assembly is included with the T1 option.
(16) Available for HART 4-20mA output code A. Valid for Ranges 2-5 only.
(17) Only available with HART 4-20mA output (output code A).
(18) NAMUR-Compliant operation is pre-set at the factory and cannot be changed to standard operation in the field.
(19) Not valid with Alternate Process Connections S5 & S6.
(20) Requires one of the Diaphragm Seal Assemblies codes (S1 or S2).
2051T Ordering Information
A-15
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Model
Transmitter Type (Select One)
2051T
In-Line Pressure Transmitter
Model
G
A
Code
1
2
3
4
5
Code
A
M
F
Code
2B
2C
2F
Code
2(1)
3(1)
Code
1
2
Code
A
B
D
J
K
M
Code
Measurement Type
Gage
Absolute
Pressure Ranges (Ranges/ Min. Span)
2051TG
–14.7 to 30 psi/0.3 psi (–1,01 to 2,1 bar/20,7 mbar)
–14.7 to 150 psi/1.5 psi (–1,01 to 10,3 bar/103,4 mbar)
–14.7 to 800 psi/8 psi (–1,01 to 55,2 bar/0,55 bar)
–14.7 to 4000 psi/40 psi (–1,01 to 275,8 bar/2,8 bar)
–14.7 to 10000 psi/2000 psi (–1,01 to 689,5 bar/138 bar)
2051TA
0 to 30 psia/0.3 psia (0 to 2,1 bar/20,7 mbar)
0 to 150 psia/1.5 psia (0 to 10,3 bar/103,4 mbar)
0 to 800 psia/8 psia (0 to 55,2 bar/0,55 bar)
0 to 4000 psia/40 psia (0 to 275,8 bar/2,8 bar)
0 to 10000 psia/2000 psia (0 to 689,5 bar/138 bar)
Output
4–20 mA with Digital Signal Based on HART Protocol
Low-Power, 1–5 V dc with Digital Signal Based on HART Protocol
FOUNDATION fieldbus Protocol
Process Connection Style
1
/2–14 NPT female
G1/2 A DIN 16288 male (Range 1-4 only)
Coned and Threaded, Compatible with Autoclave Type F-250-C (Includes Gland and Collar, Available in SST for Range 5 only)
Isolating Diaphragm
316L SST
Alloy C-276
Fill Fluid
Silicone
Inert fill (Fluorinert FC-43)
Housing Material
Conduit Entry Size
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
SST (consult factory for availability)
SST (consult factory for availability)
SST (consult factory for availability)
½–14 NPT
M20 × 1.5 (CM20)
G½
½–14 NPT
M20 × 1.5 (CM20)
G½
Options
Manifold Assemblies
S5(2)
Assemble to Rosemount 306 Integral Manifold
Diaphragm Seal Assemblies
S1(2)
Assemble to one Rosemount 1199 diaphragm seal
Mounting Brackets
B4
Bracket for 2-in. Pipe or Panel Mounting, all SST
Product Certifications
E1(3)
ATEX Flameproof
E2(3)
INMETRO Flameproof (consult factory for availability)
E3(3)
China Flameproof (consult factory for availability)
E4(3)
TIIS Flameproof (consult factory for availability)
E5
FM Explosion-proof, Dust Ignition-proof
E6
CSA Explosion-proof, Dust Ignition-proof, Division 2
E7
IECEx Flameproof
EP(3)
Korea (KOSHA) Flameproof Approval (consult factory for availability)
India (CCOE) Flameproof Approval (consult factory for availability)
EW(3)
GOST Explosion-proof (consult factory for availability)
EM(3)
A-16
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
ATEX Intrinsic Safety
I1
I2(3)
INMETRO Intrinsic Safety (consult factory for availability)
I3(3)
China Intrinsic Safety (consult factory for availability)
I4(3)
TIIS Intrinsic Safety (consult factory for availability)
I5
FM Intrinsically Safe, Division 2
I6
CSA Intrinsically Safe
I7(3)
IECEx Intrinsic Safety
IA(4)
ATEX FISCO Intrinsic Safety
IB(4)
INMETRO FISCO Intrinsic Safety (consult factory for availability)
ID(4)
TIIS FISCO Intrinsic Safety (consult factory for availability)
IE(4)
FM FISCO Intrinsically Safe
IF(4)
CSA FISCO Intrinsically Safe
IG(4)
IECEx FISCO Intrinsically Safe
IP(3)
Korea (KOSHA) Instrinsic Safety (consult factory for availability)
IM(3)
GOST Intrinsically Safe (consult factory for availability)
IW(3)
India (CCOE) Intrinsic Safety Approval (consult factory for availability)
K1(3)
ATEX Flameproof, Intrinsic Safety, Type n, Dust
K2(3)
INMETRO Flameproof, Intrinsic Safety, Type n (consult factory for availability)
K4(3)
TIIS Flameproof, Intrinsic Safety (consult factory for availability)
K5
FM Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K6
CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K7(3)
IECEx Flameproof, Intrinsic Safety, Type n
KA
ATEX and CSA Flameproof, Intrinsically Safe, Division 2
KB
FM and CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
KC
FM and ATEX Explosion-proof, Intrinsically Safe, Division 2
KD(3)
FM, CSA, and ATEX Explosion-proof, Intrinsically Safe
N1(3)
ATEX Type n
N7(3)
IECEx Type n
ND
ATEX Dust
Digital Display
M5
LCD display
Special Configuration (Hardware)
D4(5)
Zero and Span Hardware Adjustments
V5(6)
External Ground Screw Assembly
Performance
P8(7)
0.065% accuracy and 5 year stability
Terminal Blocks
T1
Transient Protection Terminal Block
Special Configuration (Software)
C1(8)
Custom Software Configuration (Requires completed Configuration Data Sheet)
C4(8)(9)
Analog Output Levels Compliant with NAMUR Recommendation NE 43, Alarm High
CN(8)(9)
Analog Output Levels Compliant with NAMUR Recommendation NE 43 Alarm Low
Special Procedures
P1
Hydrostatic Testing with Certificate
P2(10)
Cleaning for Special Service
P3(10)
Cleaning for <1 PPM Chlorine/Fluorine
A-17
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Special Certifications
Q4
Calibration Certificate
Q8
Material Traceability Certification per EN 10204 3.1.B
QS(8)
Prior-use certificate of FMEDA data
Q16(11)
Surface finish certification for sanitary remote seals
QP
Calibration certification and tamper evident seal
QZ(11)
Remote Seal System Performance Calculation Report
Typical Model Number:
2051T G 3
A
2B
1
A
B4 M5
(1) Materials of Construction comply with recommendations per NACE MR0175/ISO 15156 for sour oil field production environments. Environmental limits
apply to certain materials. Consult latest standard for details. Selected materials also conform to NACE MR0103 for sour refining environments.
(2) “Assemble-to” items are specified separately and require a completed model number.
(3) Not available with Low Power output code M.
(4) Only valid with FOUNDATION fieldbus output code F.
(5) Not available with FOUNDATION fieldbus output code F.
(6) The V5 option is not needed with the T1 option; external ground screw assembly is included with the T1 option.
(7) Available for HART 4-20mA output code A. Valid for Ranges 1-4 only.
(8) Only available with HART 4-20mA output (output code A).
(9) NAMUR-Compliant operation is pre-set at the factory and cannot be changed to standard operation in the field.
(10) Not valid with Alternate Process Connection S5.
(11) Requires S1 Diaphragm Seal Assembly code.
A-18
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
2051LLT Ordering Inform
Model
Transmitter Type
2051L
Flange-Mounted Liquid Level Transmitter
Code
2
3
4
Code
A
M
F
Code
G0
H0
A0
A2
A4
A6
B0
B2
B4
B6
C0
C2
C4
C6
D0
D2
D4
D6
Code
M
A
B
N
C
D
X
F
G
Y
H
J
Q
R
K
T
Pressure Ranges (Range/Minimum Span)
–250 to 250 inH2O/2.5 inH2O (–0,6 to 0,6 bar/6,2 mbar)
–1000 to 1000 inH2O/10 inH2O (–2,5 to 2,5 bar/25 mbar)
–300 to 300 psi/3 psi (–20,7 to 20,7 bar/0,2 bar)
Output
4–20 mA with Digital Signal Based on HART Protocol
Low-Power, 1–5 V dc with Digital Signal Based on HART Protocol
FOUNDATION fieldbus Protocol
High Pressure Side
Diaphragm Size
2 in./DN 50
2 in./DN 50
3 in./DN 80
3 in./DN 80
3 in./DN 80
3 in./DN 80
4 in./DN 100
4 in./DN 100
4 in./DN 100
4 in./DN 100
3 in./DN 80
3 in./DN 80
3 in./DN 80
3 in./DN 80
4 in./DN 100
4 in./DN 100
4 in./DN 100
4 in./DN 100
Material
316L SST
Alloy C-276
316L SST
316L SST
316L SST
316L SST
316L SST
316L SST
316L SST
316L SST
Alloy C-276
Alloy C-276
Alloy C-276
Alloy C-276
Alloy C-276
Alloy C-276
Alloy C-276
Alloy C-276
Extension Length
Flush Mount Only
Flush Mount Only
Flush Mount
2 in./50 mm
4 in./100 mm
6 in./150 mm
Flush Mount
2 in./50 mm
4 in./100 mm
6 in./150 mm
Flush Mount
2 in./50 mm
4 in./100 mm
6 in./150 mm
Flush Mount
2 in./50 mm
4 in./100 mm
6 in./150 mm
Rating
Class 150, ANSI
Class 150, ANSI
Class 150, ANSI
Class 300, ANSI
Class 300, ANSI
Class 300, ANSI
Class 150, ANSI
Class 150, ANSI
Class 150, ANSI
Class 300, ANSI
Class 300, ANSI
Class 300, ANSI
PN 10-40, DIN
PN 40, DIN
PN 10-40, DIN
PN 40, DIN
Material
CS
CS
CS
CS
CS
CS
SST
SST
SST
SST
SST
SST
CS
CS
SST
SST
Mounting Flange
Size
2 in.
3 in.
4 in.
2 in.
3 in.
4 in.
2 in.
3 in.
4 in.
2 in.
3 in.
4 in.
DN50
DN80
DN50
DN80
A-19
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Code
A
C
D
H
G
N
P
Code
11
21
22
2A
2B
31
Code
Process Fill-High Pressure Side
Temperature Limits
Syltherm® XLT
D.C. Silicone 704
D.C. Silicone 200
Inert (Halocarbon)
Glycerin and Water
Neobee® M-20
Propylene Glycol and Water
-100 to 300 °F (-73 to 135 °C)
60 to 400 °F (15 to 205 °C)
-40 to 400 °F (-40 to 205 °C)
-50 to 350 °F (-45 to 177 °C)
0 to 200 °F (-17 to 93 °C)
0 to 400 °F (-17 to 205 °C)
0 to 200 °F (-17 to 93 °C)
Low Pressure Side
Configuration
Gage
Differential
Differential (SST Valve Seat)
Differential
Differential (SST Valve Seat)
Remote Seal
Flange Adapter
SST
SST
SST
SST
SST
SST
Diaphragm Material
316L SST
316L SST
Alloy C-276
316L SST
Alloy C-276
316L SST
O-ring
A
Glass-filled PTFE
Code
Housing Material
Conduit Entry Size
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
Polyurethane-covered Aluminum
SST (consult factory for availability)
SST (consult factory for availability)
SST (consult factory for availability)
½–14 NPT
M20 × 1.5 (CM20)
G½
½–14 NPT
M20 × 1.5 (CM20)
G½
A
B
D
J
K
M
Code
Options
Diaphragm Seal Assembly
S1(1)
Assemble to one Rosemount 1199 diaphragm seal
Product Certifications
E1(2)
ATEX Flameproof
E2(2)
INMETRO Flameproof (consult factory for availability)
E3(2)
China Flameproof (consult factory for availability)
E4(2)
TIIS Flameproof (consult factory for availability)
E5
FM Explosion-proof, Dust Ignition-proof
E6
CSA Explosion-proof, Dust Ignition-proof, Division 2
E7
IECEx Flameproof
EP(2)
Korea (KOSHA) Flameproof Approval (consult factory for availability)
India (CCOE) Flameproof Approval (consult factory for availability)
EW(2)
GOST Explosion-proof (consult factory for availability)
EM(2)
ATEX Intrinsic Safety
I1
I2(2)
INMETRO Intrinsic Safety (consult factory for availability)
I3(2)
China Intrinsic Safety (consult factory for availability)
I4(2)
TIIS Intrinsic Safety (consult factory for availability)
I5
FM Intrinsically Safe, Division 2
I6
CSA Intrinsically Safe
I7(2)
IECEx Intrinsic Safety
IA(3)
ATEX FISCO Intrinsic Safety
IB(3)
INMETRO FISCO Intrinsic Safety (consult factory for availability)
ID(3)
TIIS FISCO Intrinsic Safety (consult factory for availability)
IE(3)
FM FISCO Intrinsically Safe
IF(3)
CSA FISCO Intrinsically Safe
IG(3)
IECEx FISCO Intrinsically Safe
IP(2)
Korea (KOSHA) Instrinsic Safety (consult factory for availability)
IM(2)
GOST Intrinsically Safe (consult factory for availability)
A-20
Sensor Fill Fluid
Silicone
Silicone
Silicone
Inert (Halocarbon)
Inert (Halocarbon)
Silicone
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
IW(2)
India (CCOE) Intrinsic Safety Approval (consult factory for availability)
K1(2)
ATEX Flameproof, Intrinsic Safety, Type n, Dust
K2(2)
INMETRO Flameproof, Intrinsic Safety, Type n (consult factory for availability)
K4(2)
TIIS Flameproof, Intrinsic Safety (consult factory for availability)
K5
FM Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K6
CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
K7(2)
IECEx Flameproof, Intrinsic Safety, Type n
KA
ATEX and CSA Flameproof, Intrinsically Safe, Division 2
KB
FM and CSA Explosion-proof, Dust Ignition-proof, Intrinsically Safe, Division 2
KC
FM and ATEX Explosion-proof, Intrinsically Safe, Division 2
KD(2)
FM, CSA, and ATEX Explosion-proof, Intrinsically Safe
N1(2)
ATEX Type n
N7(2)
IECEx Type n
ND
ATEX Dust
Digital Display
M5
LCD display
Special Configuration (Hardware)
D4(4)
Zero and Span Hardware Adjustments
1
DF(5)
/2-14 NPT Flange Adapters
(6)
V5
External Ground Screw Assembly
Terminal Blocks
T1
Transient Protection Terminal Block
Special Configuration (Software)
C1(7)
Custom Software Configuration (Requires completed Configuration Data Sheet)
C4(7)(8)
Analog Output Levels Compliant with NAMUR Recommendation NE 43, Alarm High
CN(7)(8)
Analog Output Levels Compliant with NAMUR Recommendation NE 43 Alarm Low
Special Certifications
Q4
Calibration Certificate
Q8
Material Traceability Certification per EN 10204 3.1.B
QS(7)
Prior-use certificate of FMEDA data
Q16
Surface finish certification for sanitary remote seals
QP
Calibration certification and tamper evident seal
Flushing Connections
F1
One 1/4-inch Connector, SST Ring Material
F2
Two 1/4-inch Connectors, SST Ring Material
(9)
F3
One 1/4-inch Connector, Cast C-276 Ring Material
(9)
F4
Two 1/4-inch Connectors, Cast C-276 Ring Material
F7
One 1/2-inch Connector, SST Ring Material
F8
Two 1/2-inch Connectors, SST Ring Material
F9
One 1/2-inch Connector, Cast C-276 Ring Material
F0
Two1/2-inch Connectors, Cast C-276 Ring Material
Typical Model Number:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
2051L
2
A
2
2
A
1
A
B4
“Assemble-to” items are specified separately and require a completed model number.
Not available with Low Power output code M.
Only valid with FOUNDATION fieldbus output code F.
Not valid with FOUNDATION fieldbus output code F.
Not available with Diaphragm Seal Assembly option S1.
The V5 option is not needed with the T1 option; external ground screw assembly is included with the T1 option.
Only available with HART 4-20mA output (output code A).
NAMUR-Compliant operation is pre-set at the factory and cannot be changed to standard operation in the field.
Not available with Option Codes A0, B0, and G0.
A-21
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
OPTIONS
Standard Configuration
Unless otherwise specified, transmitter is shipped as follows:
Engineering Units 2051C:
Engineering Units 2051T:
Engineering Units 2051L:
4 mA (1 V dc)(1):
20 mA (5 V dc)(1):
Output:
Flange type:
Flange material:
Drain/vent:
Integral meter:
Alarm(1):
Software tag:
inH2O (Ranges 1-3), psi (Ranges 4-5)
psi (all ranges)
inH2O
0 (engineering units above)
Upper range limit
Linear
Specified model code option
Specified model code option
Specified model code option
Installed or none
High
(Blank)
(1) Not applicable to fieldbus.
Tagging (3 options available)
• Standard SST hardware tag is permanently affixed on transmitter. Tag
character height is 0.125 in. (3,18 mm), 140 characters maximum.
• Tag may be wired to the transmitter nameplate upon request, 85
characters maximum.
• Tag may be stored in transmitter memory (8 characters maximum).
Software tag is left blank unless specified.
Commissioning tag (fieldbus only)
A temporary commissioning tag is attached to all transmitters. The tag
indicates the device ID and allows an area for writing the location.
Optional Rosemount 304, 305 or 306 Integral Manifolds
Factory assembled to 2051C and 2051T transmitters. Refer to Product Data
Sheet (document number 00813-0100-4839 for Rosemount 304 and
00813-0100-4733 for Rosemount 305 and 306) for additional information.
Optional Diaphragm and Sanitary Seals
Refer to Product Data Sheet (document number 00813-0100-4016 or
00813-0201-4016) for additional information.
Output Information
Output range points must be the same unit of measure. Available units of
measure include:
inH2O
inHg
mmH2O
mmHg
inH2O@4 °C(1)
ftH2O
mmH2O@4 °C(1)
g/cm2
psi
bar
mbar
kg/cm2
Pa
kPa
torr
atm
(1) Not available on low power.
Hardware Adjustments
D4 Local zero and span adjustments
• Alarm and security adjustments ship standard
A-22
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
LCD display
M5 Digital Meter
• 2-Line, 5-Digit LCD for 4-20 mA HART and FOUNDATION fieldbus
• 1-Line, 4-Digit LCD for 1-5 Vdc HART Low Power
• Direct reading of digital data for higher accuracy
• Displays user-defined flow, level, volume, or pressure units
• Displays diagnostic messages for local troubleshooting
• 90-degree rotation capability for easy viewing
Transient Protection
T1 Integral Transient Protection Terminal Block
Meets IEEE C62.41, Category Location B
6 kV crest (0.5 μs - 100 kHz)
3 kV crest (8 × 20 microseconds)
6 kV crest (1.2 × 50 microseconds)
Bolts for Flanges and Adapters
• Standard material is plated carbon steel per ASTM A449, Type 1
L4 Austenitic 316 Stainless Steel Bolts
L5 ASTM A 193, Grade B7M Bolts
L8 ASTM A 193 Class 2, Grade B8M Bolts
Rosemount 2051C Coplanar Flange and 2051T Bracket Option
B4 Bracket for 2-in. Pipe or Panel Mounting
• For use with the standard Coplanar
flange configuration
• Bracket for mounting of transmitter on 2-in. pipe or panel
• Stainless steel construction with stainless steel bolts
A-23
Reference Manual
Rosemount 2051
00809-0100-4101, Rev AA
July 2008
Rosemount 2051C Traditional Flange Bracket Options
B1 Bracket for 2-in. Pipe Mounting
• For use with the traditional flange option
• Bracket for mounting on 2-in. pipe
• Carbon steel construction with carbon
steel bolts
• Coated with polyurethane paint
B2 Bracket for Panel Mounting
• For use with the traditional flange option
• Bracket for mounting transmitter on wall
or panel
• Carbon steel construction with carbon
steel bolts
• Coated with polyurethane paint
B3 Flat Bracket for 2-in. Pipe Mounting
• For use with the traditional flange option
• Bracket for vertical mounting of transmitter on 2-in. pipe
• Carbon steel construction with carbon
steel bolts
• Coated with polyurethane paint
B7 B1 Bracket with SST Bolts
• Same bracket as the B1 option with Series 300 stainless steel bolts
B8 B2 Bracket with SST Bolts
• Same bracket as the B2 option with Series 300 stainless steel bolts
B9 B3 Bracket with SST Bolts
• Same bracket as the B3 option with Series 300 stainless steel bolts
BA Stainless Steel B1 Bracket with SST Bolts
• B1 bracket in stainless steel with Series 300 stainless steel bolts
BC Stainless Steel B3 Bracket with SST Bolts
• B3 bracket in stainless steel with Series 300 stainless steel bolts
A-24
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
SPARE PARTS
Terminal Block, HART
Part Number
4-20 mA HART Output
Standard terminal block assembly
Transient terminal block assembly (option T1)
1-5 Vdc HART Low Power Output
02051-9005-0001
02051-9005-0002
Standard terminal block assembly
02051-9005-0011
Transient terminal block assembly (option T1)
02051-9005-0012
Electronics Board, HART
Part Number
Assemblies for 4-20 mA HART
4-20 mA HART for use without D4 option
4-20 mA HART for use with D4 option
4-20 mA HART NAMUR Compliant for use with or without D4 option
Assembly for 1-5 Vdc HART Low Power
1-5 Vdc HART
02051-9001-0001
02051-9001-0002
02051-9001-0012
02051-9001-1001
LCD Display, HART
LCD Display Kit(1)
4-20 mA with Aluminum Housing
4-20 mA with SST Housing
1-5 Vdc with Aluminum Housing
1-5 Vdc with SST Housing
LCD Displays Only(2)
03031-0193-0101
03031-0193-0111
03031-0193-0001
03031-0193-0011
For 4-20 mA output
For 1-5 Vdc Low Power output
LCD Display Hardware, both 4-20 mA and 1-5 Vdc Low Power
03031-0193-0103
03031-0193-0003
Aluminum Display Cover Assembly(3)
SST Display Cover Assembly(3)
O-ring package for electronics housing cover, pkg of 12
03031-0193-0002
03031-0193-0012
03031-0232-0001
Zero and Span Hardware Adjustments (D4 option)
Zero and Span Kit for 4-20 mA HART(4)
Zero and Span Kit for Aluminum Housing
02051-9010-0001
Zero and Span Kit for SST Housing
02051-9010-0002
Zero and Span Kit for 4-20 mA HART NAMUR Compliant (C4/CN) option(5)
Zero and Span Kit for Aluminum Housing
Zero and Span Kit for SST Housing
Zero and Span Kit for 1-5 Vdc HART Low Power(5)
02051-9010-1001
02051-9010-1002
Zero and Span Kit for Aluminum Housing
Zero and Span Kit for SST Housing
O-Ring Packages (package of 12)
02051-9010-1001
02051-9010-1002
Electronic housing, cover (standard and meter)
Electronics housing, module
Process flange, glass-filled PTFE
Process flange, graphite-filled PTFE
Flange adapter, glass-filled PTFE
Flange adapter, graphite-filled PTFE
03031-0232-0001
03031-0233-0001
03031-0234-0001
03031-0234-0002
03031-0242-0001
03031-0242-0002
(1)
(2)
(3)
(4)
(5)
Part Number
Kit includes LCD display, captive mounting hardware, 10-pin interconnection header, cover assembly.
Displays include LCD, captive mounting hardware, 10-pin interconnection header. No cover assembly.
Display Cover Assembly includes the cover and o-ring only.
Kit includes zero and span hardware adjustments and electronics board.
Kit includes zero and span hardware adjustments only.
A-25
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Flanges
Part Number
Differential Coplanar Flange
Nickel-plated carbon steel
03031-0388-0025
316 SST
03031-0388-0022
Cast C-276
Gage Coplanar Flange
03031-0388-0023
Nickel-plated carbon steel
03031-0388-1025
316 SST
03031-0388-1022
Cast C-276
Coplanar Flange Alignment Screw (package of 12)
03031-0388-1023
03031-0309-0001
Traditional Flange
316 SST
Cast C-276
Level Flange, Vertical Mount
03031-0320-0002
03031-0320-0003
2 in., class 150, SST
03031-0393-0221
2 in., class 300, SST
03031-0393-0222
3 in., class 150, SST
03031-0393-0231
3 in., class 300, SST
03031-0393-0232
DIN, DN 50, PN 40
03031-0393-1002
DIN, DN 80, PN 40
03031-0393-1012
Flange Adapter
Part Number
Nickel-plated carbon steel
02024-0069-0005
316 SST
02024-0069-0002
Cast C-276
02024-0069-0003
Drain/Vent Valve Kits
(each kit contains parts for one transmitter)
Part Number
Differential Drain/Vent Kits
316 SST stem and seat kit
01151-0028-0022
Alloy C-276 stem and seat kit
01151-0028-0023
316 SST ceramic ball drain/vent kit
Alloy C-276ceramic ball drain/vent kit
Gage Drain/Vent Kits
03031-0378-0022
01151-0028-0123
316 SST stem and seat kit
01151-0028-0012
Alloy C-276 stem and seat kit
01151-0028-0013
316 SST ceramic ball drain/vent kit
03031-0378-0012
Alloy C-276 ceramic ball drain/vent kit
01151-0028-0113
Mounting Brackets
2051C and 2051L Coplanar Flange Bracket Kit
A-26
B4 bracket, SST, 2-in. pipe mount, SST bolts
2051T Bracket Kit
03031-0189-0003
B4 bracket, SST, 2-in. pipe mount, SST bolts
2051C Traditional Flange Bracket Kits
03031-0189-0004
B1 bracket, 2-in. pipe mount, CS bolts
03031-0313-0001
B2 bracket, panel mount, CS bolts
03031-0313-0002
B3 flat bracket for 2-in. pipe mount, CS bolts
03031-0313-0003
B7 (B1 style bracket with SST bolts)
03031-0313-0007
B8 (B2 style bracket with SST bolts)
03031-0313-0008
B9 (B3 style bracket with SST bolts)
03031-0313-0009
BA (SST B1 bracket with SST bolts)
03031-0313-0011
BC (SST B3 bracket with SST bolts)
03031-0313-0013
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Bolt Kits
COPLANAR FLANGE
Flange Bolt Kit {44 mm (1.75 in.)} (Set of 4)
Carbon steel
03031-0312-0001
316 SST
03031-0312-0002
ASTM A 193, Grade B7M
03031-0312-0003
ASTM A 193, Class 2, Grade B8M
Flange/Adapter Bolt Kit {73 mm (2.88 in.)} (Set of 4)
03031-0312-0005
Carbon steel
03031-0306-0001
316 SST
03031-0306-0002
ASTM A 193, Grade B7M
ASTM A 193, Class 2, Grade B8M
Manifold/Flange Kit {57 mm (2.25 in.)} (Set of 4)
03031-0306-0003
03031-0306-0005
Carbon steel
03031-0311-0001
316 SST
03031-0311-0002
ASTM A 193, Grade B7M
03031-0311-0003
ASTM A 193, Class 2, Grade B8M
03031-0311-0020
TRADITIONAL FLANGE
Differential Flange and Adapter Bolt Kit {44 mm (1.75 in.)} (Set of 8)
Carbon steel
03031-0307-0001
316 SST
03031-0307-0002
ASTM A 193, Grade B7M
03031-0307-0003
ASTM A 193, Class 2, Grade B8M
Gage Flange and Adapter Bolt Kit (Set of 6)
03031-0307-0005
Carbon steel
03031-0307-1001
316 SST
03031-0307-1002
ASTM A 193, Grade B7M
ASTM A 193, Class 2, Grade B8M
Manifold/Traditional Flange Bolts
03031-0307-1003
03031-0307-1005
Carbon steel
Use bolts supplied
with manifold
316 SST
Use bolts supplied
with manifold
LEVEL FLANGE, VERTICAL MOUNT
Flange Bolt Kit (Set of 4)
Carbon steel
03031-0395-0001
316 SST
03031-0395-0002
Covers
Aluminum field terminal cover + o-ring
03031-0292-0001(1)
SST field terminal cover + o-ring
03031-0292-0002(1)
Aluminum HART electronics cover: cover + o-ring
03031-0292-0001(1)
316 SST HART electronics cover: cover + o-ring
03031-0292-0002(1)
Aluminum Electronics / LCD Display Cover Assembly: cover + o-ring
03031-0193-0002
SST Electronics / LCD Display Cover Assembly: cover + o-ring
03031-0193-0012
Miscellaneous
External ground screw assembly (option V5)
03031-0398-0001
(1) Covers are blind, not for use with LCD Display. Refer to LCD Display section for LCD covers.
A-27
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Appendix B
Rosemount 2051
Approval Information
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page B-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page B-1
Approval Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page B-7
OVERVIEW
This Appendix contains information on Approved manufacturing locations,
European directive information, Ordinary Location certification, Hazardous
Locations Certifications and approval drawings for HART protocol.
SAFETY MESSAGES
Procedures and instructions 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 (
). Refer to
the following safety messages before performing an operation preceded by
this symbol.
Warnings
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. Please review
this section of the Rosemount 2051 reference manual for any restrictions associated with a
safe installation.
•
Before connecting a HART-based 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.
•
In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers
when power is applied to the unit.
Process leaks may cause harm or result in death.
•
Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
•
Avoid contact with the leads and terminals. High voltage that may be present on
leads can cause electrical shock.
Cable gland and plug must comply with the requirements listed on the certificates.
Approved Manufacturing
Locations
www.rosemount.com
Rosemount Inc. — Chanhassen, Minnesota USA
Emerson Process Management GmbH & Co. — Wessling, Germany
Emerson Process Management Asia Pacific Private Limited — Singapore
Beijing Rosemount Far East Instrument Co., LTD — Beijing, China
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July 2008
Rosemount 2051
European Directive
Information
The EC declaration of conformity for all applicable European directives for this
product can be found on the Rosemount website at www.rosemount.com. A
hard copy may be obtained by contacting an Emerson Process Management
representative.
ATEX Directive (94/9/EC)
All 2051 transmitters comply with the ATEX Directive.
European Pressure Equipment Directive (PED) (97/23/EC)
2051CG2, 3, 4, 5; 2051CD2, 3, 4, 5 (also with P9 option)
— QS Certificate of Assessment - EC No. PED-H-100
Module H Conformity Assessment
All other 2051 Pressure Transmitters
— Sound Engineering Practice
Transmitter Attachments: Diaphragm Seal - Process Flange - Manifold
— Sound Engineering Practice
Electro Magnetic Compatibility (EMC) (2004/108/EC)
All 2051 Pressure Transmitters meet all of the requirements of
IECEN61326:2006 and NAMUR NE-21.
Ordinary Location Certification for Factory Mutual
As standard, the transmitter has been examined and tested to determine
that the design meets basic electrical, mechanical, and fire protection
requirements by FM, a nationally recognized testing laboratory (NRTL) as
accredited by the Federal Occupational Safety and Health Administration
(OSHA).
HART Protocol
Hazardous Locations
Certifications
North American Certifications
FM Approvals
E5 Explosion-Proof for Class I, Division 1, Groups B, C, and D.
Dust-Ignition-Proof for Class II, Division 1, Groups E, F, and G.
Dust-Ignition-Proof for Class III, Division 1.
T5 (Ta = 85 °C), Factory Sealed, Enclosure Type 4X
I5
B-2
Intrinsically Safe for use in Class I, Division 1, Groups A, B, C, and D;
Class II, Division 1, Groups E, F, and G; Class III, Division 1 when
connected per Rosemount drawing 02051-1009; Non-incendive for
Class I, Division 2, Groups A, B, C, and D.
Temperature Code:T4 (Ta = 40 °C), T3 (Ta = 85 °C),
Enclosure Type 4X
For input parameters see control drawing 02051-1009.
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Rosemount 2051
Canadian Standards Association (CSA)
E6 Explosion-Proof for Class I, Division 1, Groups B, C, and D.
Dust-Ignition-Proof for Class II and Class III, Division 1, Groups E, F, and
G. Suitable for Class I, Division 2 Groups A, B, C, and D for indoor and
outdoor hazardous locations. Enclosure type 4X, factory sealed
I6
Intrinsically safe approval. Intrinsically safe for Class I, Division 1,
Groups A, B, C, and D when connected in accordance with Rosemount
drawing 02051-1008. Temperature Code T3C.
Dust-Ignition-Proof for Class II and Class III, Division 1, Groups E, F, and
G. Suitable for Class I, Division 2 Groups A, B, C, and D hazardous
locations. Enclosure type 4X, factory sealed
For input parameters see control drawing 02051-1008.
European Certifications
I1
ATEX Intrinsic Safety
Certification No. Baseefa08ATEX0129X
Ex ia IIC T4 (–60 ≤ Ta ≤ +70 °C)
IP66 IP68
1180
II 1 G
Table B-1. Input Parameters
Ui = 30V
Ii = 200 mA
Pi = 1.0W
Ci = 0.012 µF
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the
apparatus is not capable of withstanding the 500V insulation test
required by Clause 6.3.12 of EN60079-11. This must be taken into
account when installing the apparatus.
N1 ATEX Type n
Certification No. Baseefa08ATEX0130X
Ex nAnL IIC T4 (–40 ≤ Ta ≤ +70 °C)
Ui = 42.4 Vdc max
IP66 IP68
II 3 G
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the
apparatus is not capable of withstanding a 500V r.m.s. test to case. This
must be taken into account on any installation in which it is used, for
example by assuring that the supply to the apparatus is galvanically
isolated.
B-3
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July 2008
Rosemount 2051
E1 ATEX Flame-Proof
Certification No. KEMA 08ATEX0090X G
Ex d IIC T6 (–50 ≤ Ta ≤ 65 °C)
Ex d IIC T5 (–50 ≤ Ta ≤ 80 °C)
IP66 IP68
1180
Vmax = 42.4 V dc
II 1/2 G
Special Conditions for Safe Use (X):
1.Appropriate ex d blanking plugs, cable glands, and wiring needs to be
suitable for a temperature of 90 °C.
2.This device contains a thin wall diaphragm. Installation, maintenance
and use shall take into account the environmental conditions to which the
diaphragm will be subjected. The manufacturer’s instructions for
maintenance shall be followed in detail to assure safety during its
expected lifetime.
3.The 2051 does not comply with the requirements of IEC 60079-1
Clause 5 for flameproof joints. Contact Emerson Process Management
for information on the dimensions of flameproof joints.
ND ATEX Dust
Certification No. Baseefa08ATEX0182X
II 1 D
Dust Rating: T80 °C (–20 ≤ Ta ≤ 40 °C) IP66 IP68
Vmax = 42.4 V dc
A = 22 mA
1180
Special Conditions for Safe Use (X):
1. The user must ensure that the maximum rated voltage and current
(42.4 volts, 22 milliampere, DC) are not exceeded. All connections to
other apparatus or associated apparatus shall have control over this
voltage and current equivalent to a category “ib” circuit according to EN
60079-1.
2. Cable entries must be used which maintain the ingress protection of
the enclosure to at least IP66.
3. Unused cable entries must be filled with suitable blanking plugs which
maintain the ingress protection of the enclosure to at least IP66.
4. Cable entries and blanking plugs must be suitable for the ambient
range of the apparatus and capable of withstanding a 7J impact test.
IECEx Certifications
I7
IECEx Intrinsic Safety
Certification No. IECExBAS08.0045X
II 1 GD
Ex ia IIC T4 (–60 ≤ Ta ≤ +70 °C)
Dust Rating: T80 °C (–20 ≤ Ta ≤ 40 °C) IP66 IP68
1180
Table B-1. Input Parameters
Ui = 30V
Ii = 200 mA
Pi = 1.0W
Ci = 0.012 µF
B-4
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July 2008
Rosemount 2051
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the
apparatus is not capable of withstanding the 500V insulation test
required by Clause 6.3.12 of IEC60079-11. This must be taken into
account when installing the apparatus.
E7 IECEx Explosion-Proof (Flame-Proof)
Certification No. IECEx KEM 08.0020X
Ex d IIC T6 (–50 ≤ Ta ≤ 65 °C)
Ex d IIC T5 (–50 ≤ Ta ≤ 80 °C)
1180
Vmax = 42.4 V dc
II 1/2 G
Special Conditions for Safe Use (X):
1.Appropriate ex d blanking plugs, cable glands, and wiring needs to be
suitable for a temperature of 90 °C.
2.This device contains a thin wall diaphragm. Installation, maintenance
and use shall take into account the environmental conditions to which the
diaphragm will be subjected. The manufacturer’s instructions for
maintenance shall be followed in detail to assure safety during its
expected lifetime.
3.The 2051 does not comply with the requirements of IEC 60079-1
Clause 5 for flameproof joints. Contact Emerson Process Management
for information on the dimensions of flameproof joints.
N7 IECEx Type n
Certification No. IECExBAS08.0046X
Ex nAnL IIC T4 (–40 ≤ Ta ≤ +70 °C)
Ui = 42.4 Vdc max
II 3 G
Special Conditions for Safe Use (X):
When the optional transient protection terminal block is installed, the
apparatus is not capable of withstanding a 500V r.m.s. test to case. This
must be taken into account on any installation in which it is used, for
example by assuring that the supply to the apparatus is galvanically
isolated.
TIIS Certifications
(consult factory for availability)
E4 TIIS Flame-Proof
Ex d IIC T6
I4
TIIS Intrinsic Safety
Ex ia IIC T4
INMETRO Certifications
(consult factory for availability)
E2 Flame-Proof
BR-Ex d IIC T6/T5
I2
Intrinsic Safety
BR-Ex ia IIC T4
B-5
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July 2008
Rosemount 2051
GOST Certifications
(consult factory for availability)
IM
Intrinsic Safety
Certificate Pending
EM Flame-Proof
Certificate Pending
China (NEPSI) Certifications
(consult factory for availability)
E3 Flame-Proof
Ex d II B+H2T3~T5
I3
Intrinsic Safety
Ex ia IIC T3/T4
KOSHA Certifications
(consult factory for availability)
EP Flame-Proof
Ex d IIB+H2 T5
IP
Intrinsic Safety
Ex ia IIC T3
CCoE Certifications
(consult factory for availability)
IW Intrinsic Safety
Ex ia IIC T4
EW Flame-Proof
Ex d IIC T5 or T6
Combinations of Certifications
Stainless steel certification tag is provided when optional approval is
specified. Once a device labeled with multiple approval types is installed, it
should not be reinstalled using any other approval types. Permanently mark
the approval label to distinguish it from unused approval types.
K1 E1, I1, N1, and ND combination
K2 E2 and I2 combination (consult factory for availability)
K4 E4 and I4 combination (consult factory for availability)
K5 E5 and I5 combination
K6 I6 and E6 combination
K7 E7, I7, and N7 combination
KA E1, I1, E6, and I6 combination
KB E5, I5, E6, and I6 combination
KC E1, I1, E5, and I5 combination
KD E1, I1, E5, I5, E6, and I6 combination
B-6
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APPROVAL DRAWINGS
Factory Mutual (FM)
B-7
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B-8
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July 2008
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B-9
Reference Manual
Rosemount 2051
B-10
00809-0100-4101, Rev AA
July 2008
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July 2008
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B-11
Reference Manual
Rosemount 2051
B-12
00809-0100-4101, Rev AA
July 2008
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July 2008
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B-13
Reference Manual
Rosemount 2051
B-14
00809-0100-4101, Rev AA
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B-15
Reference Manual
Rosemount 2051
B-16
00809-0100-4101, Rev AA
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B-17
Reference Manual
Rosemount 2051
B-18
00809-0100-4101, Rev AA
July 2008
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00809-0100-4101, Rev AA
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Rosemount 2051
B-19
Reference Manual
Rosemount 2051
Canadian Standards
Association (CSA)
B-20
00809-0100-4101, Rev AA
July 2008
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00809-0100-4101, Rev AA
July 2008
Rosemount 2051
B-21
Reference Manual
Rosemount 2051
B-22
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B-23
Reference Manual
Rosemount 2051
B-24
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B-25
Reference Manual
Rosemount 2051
B-26
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B-27
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Rosemount 2051
B-28
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July 2008
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July 2008
Appendix C
Rosemount 2051
Glossary
Some of the terms used in this manual relate specifically to the operation of
Rosemount transmitters, hand-held HART Communicators, and other
Rosemount products. The following list provides brief definitions. See the
sections listed for additional information.
Analog Output Trim
Digital trim operation that allows adjustment of the output electronics to
conform to the plant standard of current. Two types of analog output trim are
available: 4–20 mA output trim and 4–20 mA other scale.
Cloning
Off-line operation that uses a HART-based communicator to copy
configuration data from one transmitter to one or more other transmitters that
require the same data.
Commissioning
Functions performed with the HART-based communicator and the transmitter
that test the transmitter and test the loop, and verify transmitter configuration
data.
Configuration
Process of setting parameters that determine how the transmitter operates.
Damping
Output function that increases the response time of the transmitter to smooth
the output when there are rapid input variations.
Descriptor
Sixteen-character field for additional identification of the transmitter, its use, or
location. The descriptor is stored in the transmitter and can be changed using
the HART-based communicator.
Digital Trim
Format function that allows you to adjust the transmitter characterization for
purposes of digital calibration to plant standards. Digital trim includes two
separate operations: sensor trim and analog output trim.
Failure Mode Alarm
Transmitter function that drives the analog output to a jumper-selectable high
or low value in the event of an electronics failure.
Factory Characterization
Factory process during which each sensor module is subjected to pressures
and temperatures covering the full operating range.
The sensor module memory stores data generated from this process
for use by the microprocessor in correcting the transmitter output during
operation.
Full Trim
Sensor trim function in which two accurate, end-point pressures are applied
and all output is linearized between them. The selected end points should
always be equal to or outside the LRV and URV.
HART (Highway
Addressable Remote
Transducer) Protocol
Communications standard that provides simultaneous analog and digital
signal transmission between control rooms and field devices such as
transmitters.
C-1
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00809-0100-4101, Rev AA
July 2008
Lower Range Limit (LRL)
Lowest value of the measured variable that the transmitter can be configured
to measure.
Lower Range Value (LRV)
Lowest value of the measured variable that the analog output of the
transmitter is currently configured to measure.
Multidropping
The connection of several transmitters to a single communications
transmission line. Communication between the host and the transmitters
takes place digitally with the analog output of the transmitters deactivated.
Reranging
Configuration function that changes the transmitter 4 and 20 mA settings.
Send Data
HART-based communicator command that transfers configuration data from
the hand-held communicator’s memory to the transmitter memory.
Sensor Trim
Digital trim function that allows you to adjust the digital process variable
reading to a precise pressure input. Zero trim and sensor trim are the two
sensor trim functions.
Smart
Term used to describe instruments that are microprocessor-based and feature
advanced communications capabilities.
Span
Algebraic difference between the upper and lower range values.
Tag
Eight-character field for identifying the transmitter. The tag is stored
in the transmitter and can be changed using the HART Communicator and the
transmitter information function.
Transmitter Address
Unique number (1-15) used to identify a multidropped transmitter.
Transmitters that are not multidropped have 0 as an address.
Transmitter Security
Jumper-selectable feature that prevents accidental or deliberate changes to
configuration data.
Upper Range Limit (URL)
Highest value of the measured variable that the transmitter can be configured
to measure.
Upper Range Value (URV)
Highest value of the measured variable that the analog output of the
transmitter is currently configured to measure.
Zero Trim
A zero-based, one-point adjustment used in differential pressure applications
to compensate for mounting position effects or zero shifts caused by static
pressure.
C-2
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Rosemount 2051
Index
A
Address
Changing . . . . . . . . . . . 3-24
Alarm . . . . . . . . . . . . . . . . . 3-17
Burst mode values . . . . . 3-17
Configuration procedure . 2-23
Failure mode . . . . . . . . . 3-16
Level verification . . . . . . 3-18
Multidrop mode values . . 3-17
Analog output trim . . . . . . . . . 4-7
Approvals . . . . . . . . . . . . . . . B-1
Drawings . . . . . . . . . . . . B-8
B
Basic setup . . . . . . . . . . . . . . 3-9
Block diagram . . . . . . . . . . . . 1-3
Board, electronics . . . . . . . . 2-24
Bolts
Configurations . . . . . . . . 2-16
Installation . . . . . . . . . . 2-15
Material . . . . . . . . . . . . 2-15
Brackets
Mounting . . . . . . . . . . . 2-13
Bubbler Liquid Level
Measurement . . . . . . . . . . . 2-37
Bubbler System in Open Vessel 2-37
Liquid Level Measurement 2-37
Burst mode
Advanced functions . . . . 3-22
Alarm and saturation values 3-17
C
Calibration . . . . . . . . . . . . . . . 4-2
Choosing a procedure . . . 4-6
Frequency, determining . . 4-4
Full trim . . . . . . . . . . . . 4-11
Recal factory trim
Analog output . . . . . . 4-9
Sensor trim . . . . . . 4-12
Sensor trim . . . . . . . . . . 4-10
Tasks . . . . . . . . . . . . . . . 4-3
Zero trim . . . . . . . . . . . . 4-10
Cloning . . . . . . . . . . . . . . . . 3-20
Closed Vessels
Dry Leg Condition . . . . . 2-35
Liquid Level Measurement 2-35
Wet Leg Condition . . . . . 2-36
Communicator . . . . . . . . . . . . 5-5
Compensating line pressure . 4-13
Configuration
Applying a user
configuration
Bolts . . . . . . . . . . . .
Cloning . . . . . . . . . .
Data review . . . . . . .
LCD display
Custom . . . . . . .
LCD meter . . . . . . . .
Recalling . . . . . . . . .
Reusable copy . . . . .
Saving . . . . . . . . . . .
Considerations
Compatibility . . . . . .
Environmental . . . . .
General . . . . . . . . . .
Mechanical . . . . . . . .
Curr Fixed . . . . . . . . . . .
Curr Saturd . . . . . . . . . . .
Custom configuration
LCD display . . . . . . .
. . 3-21
. . 2-16
. . 3-20
. . . 3-4
..
..
..
..
..
3-15
3-14
3-20
3-21
3-20
...
...
...
...
...
...
2-2
2-3
2-2
2-3
5-4
5-4
Diagrams
Bench hook-up . . . . . . . . .3-3
Field hook-up . . . . . . . . . .3-3
Installation . . . . . . . . . . .2-18
Low power . . . . . . . . . . . .3-3
Multidrop network . . . . . .3-23
Typical multidrop network 3-23
Digital to analog trim . . . . . . . .4-7
Other scale . . . . . . . . . . .4-8
Dimensional Drawings . . . . . . .2-5
Disassembly
Before disassembling . . . .5-8
Remove electronics board .5-9
Remove from service . . . .5-8
Sensor module . . . . . . . . .5-9
Disassembly procedures . . . . .5-8
Drawings
Approval . . . . . . . . . . . . B-8
Dry Leg Condition
Liquid Level Measurement 2-35
. . 3-15
E
D
Damping . . . . . . . . . . . . . . 3-13
Detailed setup . . . . . . .3-16, 3-17
Diagnostics
Messages . . . . . . . . . . . 5-4
Curr Fixed . . . . . . . . 5-4
Curr Saturd . . . . . . . 5-4
Error . . . . . . . . . . . . 5-3
Fail . . . . . . . . . . . . . 5-3
Fail Config . . . . . . . . 5-3
Fail Elect . . . . . . . . . 5-3
Fail Module . . . . . . . 5-3
HART Communicator 5-5
Local Dsbld . . . . . . . 5-5
Loop test . . . . . . . . . 5-4
Operation . . . . . . . . 5-4
Press Limit . . . . . . . 5-4
Span Fail . . . . . . . . . 5-4
Span Pass . . . . . . . . 5-4
Temp Limit . . . . . . . 5-4
Warnings . . . . . . . . . 5-3
Write protect . . . . . . 5-5
Zero Fail . . . . . . . . . 5-4
Zero Pass . . . . . . . . 5-4
Diagnostics and service . . . . 3-18
Loop
Test . . . . . . . . . . . 3-18
Transmitter test . . . . . . 3-18
Electrical Installation Considerations
Grounding . . . . . . . . . . .2-26
Signal and Test Terminals 2-26
Wiring . . . . . . . . . . . . . .2-26
Electronics board . . . . . . . . .2-24
Low power . . . . . . . . . . .2-24
Environmental Considerations 2-31
Environmental considerations .2-3
Error . . . . . . . . . . . . . . . . . . .5-3
F
Fail . . . . . . . . . . . . . . . . . . . .5-3
Config . . . . . . . . . . . . . . .5-3
Elect . . . . . . . . . . . . . . . .5-3
Module . . . . . . . . . . . . . .5-3
Failure mode
Alarm values . . . . . . . . .3-16
Saturation values . . . . . .3-16
Full trim . . . . . . . . . . . . . . . . 4-11
G
Gas mounting requirements . .2-18
Grounding . . . . . . . . . . . . . .2-26
Transmitter Case . . . . . .2-29
H
HART Communicator
Diagnostics . . . . . . . . . . .5-5
Hazardous Locations . . . . . .2-31
Index-1
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Housing
Remove . . . . . . . . . . . . . 5-9
I
Impulse piping . . . . . . . . . . . 2-17
Installation . . . . . . . . . . 2-5, 2-12
Bolts . . . . . . . . . . . . . . 2-15
Cover . . . . . . . . . . . . . . 2-12
Environmental
Considerations . 2-31
HART flowchart . . . . . . . . 2-4
Hazardous Locations . . . 2-31
Housing rotation . . . . . . 2-21
Model 305 manifold . . . . 2-32
Model 306 manifold . . . . 2-32
Mounting . . . . . . . . . . . 2-12
Brackets . . . . . . . . 2-13
Torque values . . . . . 2-15
Process Flange Orientation 2-12
Signal Wiring Grounding 2-29
Introduction . . . . . . . . . . . . . . 1-1
J
Jumper
Alarm . . . . . . . . . . . . . . 2-22
Security . . . . . . . . . . . . 2-22
L
LCD display
Custom configuration . . . 3-15
LCD meter . . . . . . . . . . . . . 3-14
Configuration . . . . . . . . 3-14
Options . . . . . . . . . . . . 3-15
Lightning . . . . . . . . . . . . . . . 2-28
Line pressure
Compensating . . . . . . . . 4-13
Liquid Level Measurement
Bubbler System in Open
Vessel . . . . . . . 2-37
Closed Vessels . . . . . . . 2-35
Dry Leg Condition . . . . . 2-35
Open Vessels . . . . . . . . 2-35
Wet Leg Condition . . . . . 2-36
Liquid mounting requirements 2-18
Local Dsbld . . . . . . . . . . . . . . 5-5
Loop
Setting to manual . . . . . . 3-2
Test . . . . . . . . . . . . . . . . 5-4
Loop test . . . . . . . . . . . . . . . 3-18
Low power
Diagrams . . . . . . . . . . . . 3-3
Electronics board . . . . . . 2-24
M
Maintenance . . . . . . . . . . . . . 4-1
Manifold installations . . . . . . 2-32
Index-2
Manual
Use of . . . . . . . . . . .
Mechanical considerations
Meter, LCD display . . . . .
Mounting
Bolt installation
Torque values . .
Installation . . . . . . . .
Mounting requirements
Gas . . . . . . . . . . . . .
Liquid . . . . . . . . . . .
Steam . . . . . . . . . . .
Multidrop communication .
Advanced functions . .
Communicating . . . .
Diagram . . . . . . . . . .
. . . 1-1
. . . 2-3
. . 3-15
. . 2-15
. . 2-12
..
..
..
..
..
..
..
2-18
2-18
2-18
3-17
3-23
3-24
3-23
N
NAMUR-compliant values . . 3-17
O
Open Vessels
Liquid Level Measurement 2-35
Operation . . . . . . . . . . . .4-1, 5-4
Block diagram . . . . . . . . 1-3
Options
LCD meter . . . . . . . . . . 3-15
Output
Process variables . . . . . . 3-8
Recal factory trim . . . . . . 4-9
Sensor temperature . . . . 3-8
Transfer function . . . . . . . 3-9
P
Piping, impulse . .
Press Limit . . . . .
Process
Connections .
Process variables
Units . . . . . .
. . . . . . . . 2-17
. . . . . . . . . 5-4
. . . . . . . . 2-19
. . . . . . . . . 3-8
. . . . . . . . . 3-9
R
Reassembly
Attaching sensor module
Installing terminal block .
Process sensor body . . .
Recall factory trim
Analog output . . . . . . . .
Sensor trim . . . . . . . . .
Recalling . . . . . . . . . . . . . .
5-10
5-10
5-10
. 4-9
4-12
3-20
Rerange . . . . . . . . . . . . . . .3-10
AMS only . . . . . . . . . . .3-13
HART Communicator only 3-11
Pressure input source
With HART
Communicator 3-12
With local zero and
span . . . . .3-12
Returning products and materials 5-11
Reusable copy . . . . . . . . . . .3-21
S
Saturation
Burst mode values . . . . .3-17
Failure mode . . . . . . . . .3-16
Multidrop mode values . .3-17
Saving a configuration . . . . . .3-20
Security . . . . . . . . . . . . . . . .2-22
Sensor
Module
Installing . . . . . . . . .5-10
Removing . . . . . . . . .5-9
Sensor Temperature . . . . . . . .3-8
Sensor temperature . . . . . . . .3-8
Sensor trim . . . . . . . . . . . . .4-10
Service and Diagnostics . . . .3-18
Service Support . . . . . . . . . . .1-1
Setup
Basic . . . . . . . . . . . . . . .3-9
Detailed . . . . . . . 3-16, 3-17
Signal Wiring Grounding . . . .2-29
Software
Lock out . . . . . . . . . . . .2-22
Span
Button . . . . . . . . . . . . . .2-22
Fail . . . . . . . . . . . . . . . . .5-4
Pass . . . . . . . . . . . . . . . .5-4
Spare parts . . . . . . . . . . . . A-25
Steam mounting requrements 2-18
T
Tagging . . . . . . . . . . . . . . . . .2-3
Temp limit . . . . . . . . . . . . . . .5-4
Terminal block
Installing . . . . . . . . . . . .5-10
Terminal Side . . . . . . . . . . . .2-12
Test . . . . . . . . . . . . . . . . . .3-18
Torque values . . . . . . . . . . .2-15
Transfer function . . . . . . . . . .3-9
Transmitter Case . . . . . . . . .2-29
Transmitter functions . . . . . . . .4-1
Transmitter test . . . . . . . . . .3-18
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
Trim
Analog output . . .
Digital to Analog .
Other scale .
Full . . . . . . . . . .
Recall factory
Analog output
Sensor trim .
Sensor . . . . . . . .
Zero . . . . . . . . . .
Troubleshooting . . . . .
Reference table . .
. . . . . . 4-7
. . . . . . 4-7
. . . . . . 4-8
. . . . . 4-11
. . . . . . 4-9
. . . . . 4-12
. . . . . 4-10
. . . . . 4-10
. . . . . . 5-1
. . . . . . 5-2
U
Units,Process variable . . . . . . 3-9
V
Vessels
Open/Closed . . . . . . . . . 2-35
W
Warnings . . . . . . . . . . . . . . . 5-3
Wet Leg Condition
Example (Figure 4-6) . . . 2-36
Liquid Level Measurement 2-36
Wiring . . . . . . . . . . . . . . . . . 2-26
Diagrams
Low power . . . . . . . . 3-3
Signal Terminals . . . . . . 2-26
Test Terminals . . . . . . . 2-26
Wiring diagrams
Bench hook-up . . . . . . . . 3-3
Field hook-up . . . . . . . . . 3-3
Write protect . . . . . . . . 2-22, 5-5
X
Xmtr Info . . . . . . . . . . . . . . . . 5-4
Z
Zero
Button
Fail . .
Pass .
Zero trim . .
. . . . . . . . . . . . . 2-22
. . . . . . . . . . . . . . 5-4
. . . . . . . . . . . . . . 5-4
. . . . . . . . . . . . . 4-10
Index-3
Reference Manual
Rosemount 2051
Index-4
00809-0100-4101, Rev AA
July 2008
Reference Manual
00809-0100-4101, Rev AA
July 2008
Rosemount 2051
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Rosemount Inc.
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T 1-800-999-9307
Int’l 1-952-906-8888
F (952) 949-7001
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