Rosemount 2051HT Hygienic Pressure Transmitter with 4-20mA HART Quick Start Guide

Quick Start Guide

00825-0100-4591, Rev BA

March 2018

Rosemount™ 2051HT Hygienic Pressure
Transmitter

with 4–20 mA HART® Revision 5 and 7 Protocol

Note

Before installing the transmitter, confirm the correct device driver is loaded on the host
systems. See page 3 for system readiness.

Quick Start Guide

March 2018

NOTICE

This guide provides basic guidelines for the Rosemount 2051HT Transmitter. It does not provide instructions
for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-proof, Flameproof, or
intrinsically safe (I.S.) installations.

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.

Before connecting a HART
the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

Process leaks may cause harm or result in death.

To avoid process leaks, only use the gasket 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

 Aluminum housings: Unless marked, the conduit/cable entries in the transmitter housing use a 1/2–14 NPT

thread form.

 Stainless steel (SST) housings: conduit/cable entries can be determined by crossing referencing the model

string printed on the transmitter with the ordering table listed in the Pro duct Data Sheet. Conduit type is
not cast into the transmitter housing to minimize surface irregularities.

 Only use plugs, adapters, glands, or conduit with a compatible thread form when closing these entries.

®

-based communicator in an explosive atmosphere, make sure the instruments in

4

Contents

System readiness . . . . . . . . . . . . . . . . . . . . . . . . . 3

Transmitter installation . . . . . . . . . . . . . . . . . . . 3

Mount the transmitter . . . . . . . . . . . . . . . . . . . . 3

Set the switches . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2

Connect the wiring and power up . . . . . . . . . . 6

Verify configuration . . . . . . . . . . . . . . . . . . . . . . 8

Trim the transmitter . . . . . . . . . . . . . . . . . . . . . 11

Product certifications . . . . . . . . . . . . . . . . . . . . 14

March 2018

1.0 System readiness

1.1 Confirm HART Revision capability

 If using HART based control or asset management systems, confirm the

HART capability of those systems prior to transmitter installation. Not all
systems are capable of communicating with HART Revision 7 protocol. This
transmitter can be configured for either HART Revision 5 or 7.

 For instructions on how to change the HART Revision of your transmitter, see

page 11.

Quick Start Guide

1.2 Confirm correct device driver

 Verify the latest device driver (DD/DTM

ensure proper communications.

 Download the latest device driver at Emerson.com or FieldCommGroup.org.

Rosemount 2051 device revisions and drivers

Table 1 provides the information necessary to ensure you have the correct

device driver and documentation for your device.

Table 1. Rosemount 2051 Device Revisions and Files

Identify device Find device driver

Software

release

date

Dec-11 1.0.0 01

1. NAMUR software revision is located on the hardware tag of the device. In accordance with NE53,
revisions of the least significant level X (of 1.0.X) do not change functionalit y or operation of the
device and will bot be reflected in this device revision histor y.

2. HART software revision can be read using a HART capable configuration tool.

NAMUR

software

revision

(1)

HART

software

revision

HART

universal

(2)

revision

7 10 Rosemou nt

5 9

2.0 Transmitter installation

™

) is loaded on your systems to

Device

revision

Review
instruction

Referen ce

manual

2051

Pressure

Tra ns mi tte r

Reference

Manual

Review

functionality

Changes to

software

N/A

2.1 Mount the transmitter

Orient the transmitter to 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 2051HT, it is recommended installing so the
conduit entry faces downward towards the ground to maximize drain ability
when cleaning.

3

Quick Start Guide

A

Environmental seal for housing

Thread sealing (PTFE) tape or paste on male threads of conduit is required to
provide a water/dust tight conduit seal and meets requirements of NEMA
4X, IP66, IP68, and IP69K. Consult factory if other Ingress Protection ratings are
required.

For M20 threads, install conduit plugs to full thread engagement or until
mechanical resistance is met.

Note

IP69K rating only available on units with a SST housing and option code V9 in the model
string.

Note

For aluminum housings ordered with M20 conduit entries, transmitters shipped will have

1

/2 NPT threads machined into the housing and a 1/2 NPT to M20 thread adapter will be
provided. Considerations for environmental sealing listed above should be taken into
account when installing the thread adapter.

In-line gage 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 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.

Recommended installations have a conduit entry facing the ground so the gage
vent is pointing parallel to the ground.

March 2018

®

Type

Figure 1. In-line Protected Gage Vent Low Side Pressure Port

Aluminum Polished 316 SST

A. Low side pressure port (atmospheric reference)

4

March 2018

A

B

Clamping

When installing clamp, follow recommended torque values provided by gasket
manufacturer.

(1)

2.2 Set the switches

Set alarm and security switch configuration before installation as shown in

Figure 2.

 The alarm switch sets the analog output alarm to high or low.

- Default alarm is high.

 The security switch allows (unlocked symbol) or prevents (locked symbol)

any configuration of the transmitter.

- Default security is off (unlocked symbol).

Use the following procedure to change the switch configuration:

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. It is recommended that the cover be

tightened until there is no gap between the cover and the housing.

The covers must only be capable of being released or removed with the aid
of a tool to comply with applicable ordinary locations requirements.

Quick Start Guide

Figure 2. Transmitter Electronics Board

Without LCD display With LOI or LCD display

A. Alarm
B. Security

1. To maintain transmitter performance, torquing a 1.5-in. Tri-Clamp beyond 50 in-lb is not recommended on pressure
ranges below 20 psi.

Aluminum

Polished 316 SST

A

B

5

Quick Start Guide

2.3 Connect the wiring and power up

Figure 3. Transmitter Wiring Diagrams (4–20 mA)

Aluminum

March 2018

A

B

A

B

A. 24 Vdc supply
B. R

≥ 250

L

C. Current meter (optional)

C

Polished 316 SST

C

Shielded twisted pair cable should be used for best results. Use 24 AWG or larger
wire that does not exceed 5,000 ft. (1500 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.

6

March 2018

 Installation of the transient protection terminal block does not provide transient protection unless the

Rosemount 2051HT 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.

Quick Start Guide

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.

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 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. It is recommended that the cover be
tightened until there is no gap between the cover and the housing.

The covers must only be capable of being released or removed with the aid of
a tool to comply with applicable ordinary locations requirements.

7

Quick Start Guide

DP

A

B

D

E

C

Figure 4. Wiring

March 2018

Aluminum Polished 316 SST

A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal

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

properly wired, refer to Figure 4 for internal and external transient grounding
locations.

A

B

DP

D

E

D. Insulate shield
E. Connect shield back to the power supply ground

, step 1 through 8. When the transmitter is

C

Note

The Rosemount 2051HT polished 316 SST housing only provides ground termination
inside the terminal compartment.

2.4 Verify configuration

Verify the configuration using any HART capable configuration tool or Local
Operator Interface (LOI) - option code M4. Configuration instructions for a Field
Communicator and LOI are included in this step.

Verifying configuration with a Field Communicator

A Rosemount 2051 DD must be installed on the Field Communicator to verify
configuration. Fast Key sequences for the latest DD are shown in Table 2 on

page 9. For Fast Key sequences using legacy DD's, contact your local Emerson

representative.

8

™

March 2018













Quick Start Guide

Note

Emerson recommends installing the latest DD to access the complete functionality. Visit

Emerson.com/Field-Communicator for information on updating the DD Library.

1. Verify device configuration using the Fast Key sequences in Tab le 2 .

 A check () indicates the basic configuration parameters. At minimum,

these parameters should be verified as part of configuration and startup.

Table 2. Device Revision 9 and 10 (HART7), DD Revision 1 Fast Key Sequence

Function Fast Key se quen ce

HART 7 HART 5

Alarm and Saturation Levels 2, 2, 2, 5, 7 2, 2, 2, 5, 7

Damping 2, 2, 1, 1, 5 2, 2, 1, 1, 5

Range Values 2, 2, 2 2, 2, 2

Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1

Transfer Function 2, 2, 1, 1, 6 2, 2, 1, 1, 6

Units 2, 2, 1, 1, 4 2, 2, 1, 1, 4

Burst Mode 2, 2, 5, 3 2, 2, 5, 3

Custom Display Configu ration 2, 2, 4 2, 2, 4

Date 2, 2, 7, 1, 4 2, 2, 7, 1, 3

Descriptor 2, 2, 7, 1, 5 2, 2, 7, 1, 4

Digital to Analog Trim (4–20 mA output) 3, 4, 2 3, 4, 2

Disable Configuration Buttons 2, 2, 6, 3 2, 2, 6, 3

Rerange with Keypad 2, 2, 2, 1 2, 2, 2, 1

Loop Test 3, 5, 1 3, 5, 1

Lower Sensor Trim 3, 4, 1, 2 3, 4, 1, 2

Message 2, 2, 7, 1, 6 2, 2, 7, 1, 5

Scaled D/A Trim (4–20 mA output) 3, 4, 2 3, 4, 2

Se nso r Temp era tur e/Trend 3, 3, 2 3, 3, 2

Upper Sensor Trim 3, 4, 1, 1 3, 4, 1, 1

Digital Zero Trim 3, 4, 1, 3 3, 4, 1, 3

Password 2, 2, 6, 5 2, 2, 6, 4

Scaled Variable 3, 2, 2 3, 2, 2

HART Revision 5 to HART Revision 7 switch 2, 2, 5, 2, 3 2, 2, 5, 2, 3

(1)

Long Tag

Find Device

Simulate Digital Signal

1

1

2, 2, 7, 1, 2 N/A

3, 4, 5 N/A

3, 4, 5 N/A

1. Only available in HART Revision 7 mode.

9

Quick Start Guide

Assign PV

HART Revision

Verifying configuration with LOI

The optional LOI can be used for commissioning the device. The LOI is a
two-button design with internal and external/rear buttons. On a polished
stainless steel housing, buttons are located internally both on the display and
terminal side of the transmitter. On an aluminum housing, buttons are located
on the display and externally underneath the top metal tag. To activate the LOI,
push any button. LOI button functionality is shown on the bottom corners of the
display. See Table 3 and Figure 5 for button operation and menu information.

Table 3. LOI Button Operation

Button

Left No SCROLL

Right Yes ENTER

Figure 5. LOI Menu

March 2018

10

March 2018

Switch HART Revision mode

If the HART configuration tool is not capable of communicating with HART
Revision 7, the Rosemount 2051 will load a generic menu with limited
capability. The following procedures will switch the HART Revision mode from
the generic menu:

1. Manual Setup > Device Information > Identification > Message
a.To change to HART Revision 5, Enter: HART5 in the Message field.

b.To change to HART Revision 7, Enter: HART7 in the Message field.

Note

See Table 2 on page 9 to change HART Revision when the correct device driver is
loaded.

2.5 Trim the transmitter

Devices are calibrated by the factory. Once installed, it is recommended to
perform a zero trim on gage transmitters 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 the equalization valve is open and all wet
legs are filled to the correct level.

Quick Start Guide

It is not recommended to zero an absolute transmitter, Rosemount 2051HTA model.

1. Choose your trim procedure.
a. Analog zero trim – Sets the analog output to 4 mA.

b. Also referred to as a “rerange,” it sets the lower range value (LRV) equal to

the measured pressure.
c. The display and digital HART output remains unchanged.
d. Digital zero trim – Recalibrates the sensor zero.
e. The LRV is unaffected. The pressure value will be zero (on display and

HART output). 4 mA point may not be at zero.
f. This requires the factory calibrated zero pressure is within a range of 3%

of the URV [0 ± 3% x URV].

Example

URV = 250 inH2O
Applied Zero Pressure = ± 0.03x 250 inH2O = ± 7.5 inH2O (compared to factory
settings) values outside this range will be rejected by the transmitter

Trimming with a Field Communicator

1. Connect the Field Communicator, see “Connect the wiring and power up” on

page 6 for instructions.

11

Quick Start Guide

A

A

2. Follow the HART menu to perform the desired zero trim.

Fast Key se quenc e 3, 4, 2 3, 4, 1, 3

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 6. External or Rear/Terminal-Side Configuration Buttons

LOI

Analog zero (set 4 mA) Digital zero

Analog zero and

span

Digital zero

March 2018

Aluminum

12

Polished 316 SST

(1)

N/A

A. Configuration buttons

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-s ide facing buttons.

March 2018

Quick Start Guide

Use the following procedures to perform a zero trim:

Perform trim with LOI (option M4)

1. Set the transmitter pressure.

2. See Figure 5 on page 10 for the operating menu.
a. Perform an analog zero trim by selecting Rerange.

b. Perform a digital zero trim by selecting Zero Trim.

Perform trim with analog zero and span (option D4)

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)

1. Set the transmitter pressure.

2. Press and hold the Zero button for two seconds to perform a digital zero
trim.

13

Quick Start Guide

3.0 Product certifications

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/Rosemount

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).

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 Additional Certifications

®

3-A

All Rosemount 2051HT transmitters with the following connections are 3-A
approved and labeled

1

/2-in. Tri-Clamp

T32: 1
T42: 2-in. Tri-Clamp

If process connection B11 is selected, please reference the ordering table of the
Rosemount 1199 Diaphragm Seal Product Data Sheet
certifications.

A 3-A certificate of compliance is available by selecting option code QA.

.

March 2018

for availability of 3-A

14

EHEDG

All Rosemount 2051HT transmitters with the following connections are EHEDG
approved and labeled:

1

/2-in. Tri-Clamp

T32: 1
T42: 2-in. Tri-Clamp

If process connection B11 is selected, please reference the ordering table of the
Rosemount 1199 Diaphragm Seal Product Data Sheet
certifications.

An EHEDG certificate of compliance is available by selecting option code QE.

Ensure gasket selected for installation is approved to meet both application and
EHEDG certification requirements. Transmitters and all associated accessories
must be installed following EHEDG guidelines to ensure the assembly meets
EHEDG certification requirements.

for availability of EHEDG

March 2018

EU Declaration of Conformity

No: RMD 1115 Rev. A

Page 1 of 2

We,

Rosemount Inc.
8200 Market Boulevard
Chanhassen, MN 55317-9685
USA

declare under our sole responsibility that the product,

Rosemount™ 2051HT Pressure Transmitters

manufactured by,

Rosemount Inc.
8200 Market Boulevard
Chanhassen, MN 55317-9685
USA

to which this declaration relates, is in conformity with the provisions of the European Union
Directives, including the latest amendments, as shown in the attached schedule.

Assumption of conformity is based on the application of the harmonized standards and, when
applicable or required, a European Union notified body certification, as shown in the attached
schedule.

(signature)

Vice President of Global Quality

(function)

Chris LaPoint

(name)

6-Feb-18; Shakopee, MN USA

(date of issue & place)

Figure 7. Declaration of Conformity

Quick Start Guide

15

Quick Start Guide

EU Declaration of Conformity

No: RMD 1115 Rev. A

Page 2 of 2

EMC Directive (2014/30/EU)

Rosemount 2051HT Pressure Transmitters

Harmonized Standards:

EN 61326-1:2013, EN 61326-2-3:2013

RoHS Directive (2011/65/EU)

Rosemount 2051HT Pressure Transmitters

Harmonized Standard: EN 50581:2012

March 2018

16

March 2018

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China RoHS

List of Rosemount 2051HT Parts with China RoHS Concentration above MCVs

Rosemount 2051HT

/ Hazardous Substances

Quick Start Guide

Part Name

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Assembly

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17

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*00825-0100-4591*

Quick Start Guide

00825-0100-4591, Rev BA

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March 2018