Emerson Rosemount 3051HT User manual

Quick Start Guide
00825-0100-4091, Rev DB
April2023
Rosemount™ 3051HT Hygienic
Pressure Transmitter
with 4–20 mA HART®

Contents
About this guide...........................................................................................................................3
Transmitter installation...............................................................................................................5
Product certifications................................................................................................................ 19
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1 About this guide
This guide provides basic guidelines for Rosemount 3051
Transmitters. It does not provide instructions for configuration,
diagnostics, maintenance, service, troubleshooting, Explosion-Proof,
Flame-Proof, or intrinsically safe (I.S.) installations. Refer to the
Rosemount 3051 Manual for more instructions. This guide is also
available electronically on Emerson.com/Rosemount.
1.1 Safety messages
DANGER
Explosions
Explosions could result in death or serious injury.
Installation of device in an explosive environment must be in
accordance with appropriate local, national, and international
standards, codes, and practices. Review Product certifications for
any restrictions associated with a safe installation.
Before connecting a handheld communicator in an explosive
atmosphere, ensure that the instruments 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.
DANGER
Process leaks
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.
DANGER
Electrical shock
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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WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to
and/or misconfiguration of end users’ equipment. This could be
intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and
fundamental in protecting your system. Restrict physical access by
unauthorized personnel to protect end users’ assets. This is true for
all systems used within the facility.
CAUTION
Conduit/cable entries
Unless otherwise marked, the conduit/cable entries in the housing
enclosure use a ½–14 NPT form. Only use plugs, adapters, glands, or
conduit with a compatible thread form when closing these entries.
Entries marked “M20” are M20 × 1.5 thread form. On devices with
multiple conduit entries, all entries will have the same thread form.
When installing in a hazardous location, use only appropriately listed
or Ex certified plugs, glands, or adapters in cable/conduit entries.
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2 Transmitter installation
2.1 Mount the transmitter
Place the transmitter to the desired orientation before mounting.
Transmitter must not be securely mounted or clamped in place when
changing transmitter orientation.
Conduit entry orientation
When installing a Rosemount 3051HT, it is recommended installing
so a conduit entry faces downward or parallel to the ground to
maximize drainability when cleaning.
Environmental seal for housing
Thread sealing (PTFE) tape or paste on male threads of conduit is
required to provide a watertight/dustproof conduit seal and meets
requirements of NEMA® Type 4X, IP66, IP68, and IP69K. Consult
factory if other Ingress Protection ratings are required.
Note
IP69K rating only available on units with a SST housing and option
code V9 in the model string.
For M20 threads, install conduit plugs to full thread engagement or
until mechanical resistance is met.
In-line gauge transmitter orientation
The low side pressure port (atmospheric reference) on the in-line
gage transmitter is located on the neck of the transmitter via a
protected gage vent (See Figure 2-1).
Keep the vent path free from obstructions including but not limited
to paint, dust, and viscous fluids by mounting the transmitter so the
process can drain away.
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Figure 2-1: In-line Protected Gage Vent Low Side Pressure Port
Aluminum Polished 316 SST
A. Low side pressure port (atmospheric reference)
Clamping
When installing clamp, follow recommended torque values provided
by gasket manufacturer.
Note
To maintain performance, torquing a 1.5-in. Tri Clamp beyond 50
in-lb. is not recommended on pressure ranges below 20 psi.
2.2 Set the switches
Prerequisites
Set alarm and security switch configuration before installation as
shown in Figure 2-2 and Figure 2-3.
•The alarm switch sets the analog output alarm to high or low.
•Default alarm is high.
•The security switch allows ( ) or prevents ( ) any configuration of
the transmitter.
•Default security is off ( ).
Use the following procedure to change the switch configuration:
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Procedure
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. Slide the security and alarm switches into the preferred
position using a small screwdriver.
4. Reattach the transmitter cover.
•The covers must only be capable of being released or
removed with the aid of a tool to comply with applicable
ordinary locations requirements.
•The cover must be fully engaged to comply with explosion-
proof requirements.
Figure 2-2: Transmitter Electronics Board - Aluminum
Without LCD display With LOI or LCD display
A. Alarm
B. Security
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Figure 2-3: Transmitter Electronics Board - Polished 316 SST
Without LCD display With LOI or LCD display
A. Alarm
B. Security
2.3 Connect the wiring and power up
Figure 2-4: Transmitter Wiring Diagrams (4–20 mA) - Aluminum
DP
A
B
D
E
C
A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal
D. Insulate shield
E. Connect shield back to the power supply ground
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Figure 2-5: Transmitter Wiring Diagrams (4–20 mA) - Polished 316
SST
DP
A
B
D
E
C
A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal
D. Insulate shield
E. Connect shield back to the power supply ground
Shielded twisted pair cable should be used for best results. Use 24
AWG or larger wire that does not exceed 5,000 ft. (1,500 m) in length.
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.
CAUTION
•Installation of the transient protection terminal block does not
provide transient protection unless the Rosemount 3051HT case
is properly grounded.
•Do not run signal wiring in conduit or open trays with power
wiring, or near heavy electrical equipment.
•Do not connect the powered signal wiring to the test terminals.
Power could damage the test diode in the terminal block.
Procedure
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.
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3. Ensure full contact with terminal block screw and washer.
When using a direct wiring method, wrap wire clockwise to
ensure it is in place when tightening the terminal block screw.
Note
The use of a pin or a ferrule wire terminal is not recommended
as the connection may be more susceptible to loosening over
time or under vibration.
4. Ground housing to fulfill local grounding regulations.
5. Ensure proper grounding. 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
6. If transient protection is needed, refer to section Grounding
for transient terminal block for grounding instructions.
7. Plug and seal unused conduit connections.
8. Reattach the transmitter covers.
•The covers must only be capable of being released or
removed with the aid of a tool to comply with applicable
ordinary locations requirements.
•The cover must be fully engaged to comply with explosion-
proof requirements.
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Figure 2-6: Wiring Considerations
Aluminum Polished 316 SST
DP
A
B
D
E
C

DP
A
B
D
E
C

A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal (do not ground cable shield
at the transmitter)
D. Insulate shield
E. Connect shield back to the power supply ground
2.3.1 Grounding for transient terminal block
Ground termination is provided on the outside of the electronics
housing and inside the terminal compartment. These grounds are
used when the transient protection terminal blocks are installed. It is
recommended that 18 AWG or larger wire is used to connect housing
ground to earth ground (internal or external).
If the transmitter is currently not wired for power up and
communication, follow Connect the wiring and power up. When the
transmitter is properly wired, refer to Figure 2-6 for internal and
external transient grounding locations.
Note
The Rosemount 3051HT polished 316 SST housing only provides
ground termination inside the terminal compartment.
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2.4 Configuration parameters
Emerson recommends that you verify various configuration
parameters prior to installation into the process.
•Alarm and saturation levels
•Damping
•Process variables
•Range values
•Tag
•Transfer function
•Units
Complete the following steps to verify these parameters. See Figure
2-7 for a full menu tree.
Note
Emerson recommends installing the latest DD to ensure full
functionality. Download the latest DD at Software Downloads &
Drivers | Emerson US.
Communication Device
Procedure
1. Alarm and saturation values
•Device Settings → Setup Overview → Alarm and Saturation
Values
2. Damping
•Device Settings → Setup Overview → Output
3. Process variables
•Primary variable: Device Settings → Setup Overview →
Output
•Secondary/Tertiary/Quaternary variables: Device Settings
→ Communication → HART → Variable Mapping
4. Range values
•Device Settings → Setup Overview → Output
5. Tag
•Device Settings → Setup Overview → Device
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6. Transfer function
•Device Settings → Setup Overview → Output
7. Units
•Pressure units: Device Settings → Setup Overview →
Output
•Other units: Device Settings → Output → Pressure/Flow/
Totalizer/Level/Volume/Module Temperature → Setup
Figure 2-7: DD Menu Tree
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2.4.1 Wireless configuration via Bluetooth® technology
Download AMS Device Configurator
Procedure
Download and install the app from your app store. The first time
opening AMS Device Configurator, you may be asked to allow the
application to access media on your device and to access your
device's location. If prompted, select Allow.
Related information
Emerson.com/Automation-Solutions-Bluetooth
Configure via Bluetooth® wireless technology
Procedure
1. Launch AMS Device Configurator.
See AMS Device Configurator for Emerson Field Devices.
2. Click on the device you want to connect to.
3. On first connection, enter the key for this device.
4. At the top left, click the menu icon to navigate the desired
device menu.
Bluetooth® UID and key
You can find the UID and key on the disposable paper tag attached to
the device, the terminal block cover, and on the display unit.
Figure 2-8: Bluetooth security information
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2.5 Trim the transmitter
Devices are calibrated by the factory. Once installed, it is
recommended to perform a zero trim on gage transmitter to
eliminate error due to mounting position or static pressure effects.
A zero trim can be performed using either a Field Communicator or
configuration buttons.
Note
When performing a zero trim, ensure no process pressure is applied
to device and all wet legs are filled to the correct level.
CAUTION
It is not recommended to zero an absolute transmitter, Rosemount
3051HTA model.
Procedure
Choose your trim procedure.
a) Analog zero trim – Sets the analog output to 4 mA.
•Also referred to as a “rerange” it sets the lower range value
(LRV) equal to the measured pressure.
•The display and digital HART output remains unchanged.
b) Digital zero trim – Recalibrates the sensor zero.
•The LRV is unaffected. The pressure value will be zero (on
display and HART output). 4 mA point may not be at zero.
•This requires the factory calibrated zero pressure is within
a range of 3% of the URL [0 ± 3% × URL].
URV = 250 inH2O
Applied Zero Pressure = ± 0.03 × 250 inH2O = ± 7.5 inH2O (compared
to factory settings) values outside this range will be rejected by the
transmitter
2.5.1 Trimming with a Field Communicator
Procedure
1. Connect the Field Communicator, see Connect the wiring and
power up for instructions.
2. Follow the HART menu to perform the desired zero trim.
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Table 2-1: Zero Trim Fast Keys
 Analog Zero (Set 4 mA) Digital Zero
Fast Key
sequence
3, 4, 2 3, 4, 1, 3
2.5.2 Trimming with configuration buttons
A zero trim is to be performed using one of the three possible sets of
configuration buttons located above the terminal block or under the
top tag.
To access the configuration buttons on a polished stainless steel
housing, remove the terminal side housing cover.
To access the configuration buttons on an aluminum housing, loosen
the screw on the top tag and slide the tag on the top of the
transmitter.
Figure 2-9: External or Rear/Terminal-Side Configuration Buttons
for Aluminum
LOI Analog zero
and span
Digital zero Aluminum

A. Configuration buttons
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Figure 2-10: External or Rear/Terminal-Side Configuration
Buttons for Polished 316 SST
LOI Analog zero and
span
Digital zero Aluminum
N/A(1)

(1) LOI buttons (option M4) only offer front facing buttons on SST housing
(option 1). Options D4 and DZ can still be purchased for rear/terminal-
side facing buttons.
A. Configuration buttons
Perform trim with LOI (option M4)
Procedure
1. Set the transmitter pressure.
2. Perform an analog zero trim by selecting Rerange.
3. Perform a digital zero trim by selecting Zero Trim.
Perform trim with analog zero and span (option D4)
Procedure
1. Set the transmitter pressure.
2. Press and hold the Zero button for two seconds to perform an
analog zero trim.
Perform trim with digital zero (option DZ)
Procedure
1. Set the transmitter pressure.
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2. Press and hold the Zero button for two seconds to perform a
digital zero trim.
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3 Product certifications
Rev. 1.6
3.1 European Directive Information
A copy of the EU Declaration of Conformity can be found at the
end of the Quick Start Guide. The most recent revision of the EU
Declaration of Conformity can be found at Emerson.com.
3.2 Ordinary Location Certification
As standard, the transmitter has been examined and tested to
determine that the design meets the basic electrical, mechanical,
and fire protection requirements by a nationally recognized test
laboratory (NRTL) as accredited by the Federal Occupational Safety
and Health Administration (OSHA).
Altitude Pollution degree
5000 m max 4 (metallic enclosure)
2 (non-metallic enclosure)
3.3 Installing Equipment in North America
The US National Electrical Code® (NEC) and the Canadian Electrical
Code (CEC) permit the use of Division marked equipment in Zones
and Zone marked equipment in Divisions. The markings must be
suitable for the area classification, gas, and temperature class. This
information is clearly defined in the respective codes.
3.4 USA
I5 Intrinsic Safety; Nonincendive
Certificate: 1053834
Standards: FM Class 3600 – 2011, FM Class 3610 – 2010, FM Class
3611 – 2004, FM Class 3810 – 2005
Markings: IS CL I, DIV 1, GP A, B, C, D when connected per
Rosemount drawing 03031-1024, CL I ZONE 0 AEx ia IIC
T4; NI CL 1, DIV 2, GP A, B, C, D T5; T4 (–20 °C ≤ Ta ≤ +70
°C) [HART]; T4 (–20 °C ≤ Ta ≤ +60 °C) [Fieldbus]; Type 4x
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3.5 Canada
I6 Intrinsic Safety
Certificate: 1053834
Standards: ANSI/ISA 12.27.01-2003, CSA Std. C22.2 No.142-M1987,
CSA Std. C22.2. No.157-92, CSA Std. C22.2 No. 213 -
M1987
Markings: Intrinsically Safe Class I, Division 1 Groups A, B, C,
D when connected in accordance with Rosemount
drawing 03031-1024, Temperature Code T4; Suitable for
Class I, Zone 0; Type 4X; Factory Sealed; Single Seal (See
drawing 03031-1053)
3.6 Europe
I1 ATEX Intrinsic Safety
Certificate: BAS97ATEX1089X
Standards: EN 60079-0:2012 + A11:2013, EN 60079-11:2012
Markings: HART™: II 1 G Ex ia IIC T5/T4 Ga, T5 (–20 °C ≤ Ta ≤ +40
°C), T4 (–20 °C ≤ Ta ≤ +70 °C) Fieldbus: II 1 G Ex ia IIC
Ga T4 (–20 °C ≤ Ta ≤ +60 °C)
Table 3-1: Input Parameters
Parameter HART Fieldbus/
PROFIBUS®
Voltage Ui30 V 30 V
Current Ii200 mA 300 mA
Power Pi0.9 W 1.3 W
Capacitance Ci0.012 μF 0 μF
Inductance Li0 mH 0 mH
Special Conditions for Safe Use (X):
1. The apparatus is not capable of withstanding the 500 V
insulation test required by clause 6.3.12 of EN60079-11:2012.
This must be taken into account when installing the apparatus.
2. The enclosure may be made of aluminum alloy and given a
protective polyurethane paint finish; however care should be
taken to protect it from impact or abrasion if located in Zone 0.
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