Emerson Rosemount 3051HT Manuale utente

Quick Start Guide

00825-0100-4091, Rev CB

February 2019

Rosemount™ 3051HT Hygienic Pressure

Transmitter

with 4–20 mA HART® Revision 5 and 7

Protocol

NOTICE

This guide provides basic guidelines for the Rosemount 3051HT Transmitter. It does not provide

instructions for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-proof,

Flameproof, or intrinsically safe (I.S.) installations.

WARNING

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.

In an explosion-proof/flameproof installation, do not remove the transmitter covers when power is

applied to the unit.

Ensure device is installed in accordance with intrinsically safe or non-incendive field practices.

Before connecting a handheld communicator in an explosive atmosphere, ensure the instruments are

installed in accordance with intrinsically safe or non-incendive field wiring practices.

Verify that the operating environment of the gauge is consistent with the appropriate hazardous

locations certifications.

Electrical shock can result in death or serious injury.

Care must be taken during transportation of power module to prevent electrostatic charge build-up.

Device must be installed to ensure a minimum antenna separation distance of 8 in. (20 cm) from all

persons.

Process leaks may cause harm or result in death.

Handle the device carefully.

Failure to follow safe installation guidelines could result in death or serious injury.

Ensure only qualified personnel perform the installation.

Apply wrench only to the flats, not on housing.

The battery is not replaceable in a hazardous location.

Contents

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

Transmitter installation..................................4

Product certifications...................................18

Quick Start Guide February 2019

2 Emerson.com/Rosemount

1 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 Switch HART Revision mode.

1.2 Confirm correct device driver

•Verify the latest device driver (DD/DTM™) is loaded on your systems to

ensure proper communications.

•Download the latest device driver at Emerson.com or hartcomm.org.

Rosemount 3051 device revisions and drivers

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

device driver and documentation for your device.

Table 1-1: Rosemount 3051 Device Revisions and Files

Identify

Device

Find Device Driver Review

Functionality

Software

Release Date

HART Software

Revision

HART Universal

Revision

Device

Revision(1)

Changes to

Software(2)

Dec-11 01 7 10 See (2) for list of

changes.

5 9

(1) Device driver file names use device and DD revision, e.g. 10_01. HART Protocol is

designed to enable legacy device driver revisions to continue to communicate with

new HART devices. To access new functionality, the new device driver must be

downloaded. It is recommended to download new device driver files to ensure full

functionality.

(2) HART Revision 5 and 7 Selectable, Power Diagnostics, Safety Certified, Local

Operator Interface, Process Alerts, Scaled Variable, Configurable Alarms,

Expanded Engineering Units.

February 2019 Quick Start Guide

Quick Start Guide 3

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 water/dust tight 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 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 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.

Quick Start Guide February 2019

4 Emerson.com/Rosemount

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. 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.

•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:

February 2019 Quick Start Guide

Quick Start Guide 5

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.

Example

Figure 2-2: Transmitter Electronics Board

Aluminum

Without LCD display With LOI or LCD display

Quick Start Guide February 2019

6 Emerson.com/Rosemount

Polished 316 SST

Without LCD display With LOI or LCD display

A. Alarm

B. Security

2.3 Connect the wiring and power up

Figure 2-3: Transmitter Wiring Diagrams (4–20 mA) - Aluminum

A. 24 Vdc supply

B. RL ≥ 250

C. Current meter (optional)

February 2019 Quick Start Guide

Quick Start Guide 7

Figure 2-4: Transmitter Wiring Diagrams (4–20 mA) - Polished 316 SST

A. 24 Vdc supply

B. RL ≥ 250

C. Current meter (optional)

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.

Use the following steps to wire the transmitter:

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.

Quick Start Guide February 2019

8 Emerson.com/Rosemount

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.

•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.

February 2019 Quick Start Guide

Quick Start Guide 9

Example

Figure 2-5: Wiring

Aluminum Polished 316 SST

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 2-5 for internal and external transient grounding

locations.

Note

The Rosemount 3051HT polished 316 SST housing only provides ground

termination inside the terminal compartment.

Quick Start Guide February 2019

10 Emerson.com/Rosemount

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