Emerson Rosemount 3051HT Bedienungsanleitung

Quick Start Guide

00825-0300-4091, Rev BA

June 2020

Rosemount™ 3051HT Hygienic Pressure

Transmitter

with PROFIBUS® PA Protocol

Safety messages

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.

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 to protecting your

system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for

all systems used within the facility.

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.

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2 Emerson.com/Rosemount

CAUTION

Keep the vent path free of any obstruction, including but not limited to paint, dust, and lubrication by

mounting the device so the process can drain away.

Interfering or blocking the atmospheric reference port will cause the device to output erroneous

pressure values.

Keep the vent path free of any obstruction, including but not limited to paint, dust, and lubrication by

mounting the device so the process can drain away.

Absolute pressure devices are calibrated at the factory. Trimming adjusts the position of the factory

characterization curve. It is possible to degrade performance of the device if any trim is done

improperly or with inaccurate equipment.

Individuals who handle products exposed to a hazardous substance can avoid injury if they are

informed of and understand the hazard. The product being returned will require a copy of the required

Material Safety Data Sheet (MSDS) for each substance must be included with the returned goods.

Contents

Transmitter installation................................................................................................................ 5

Basic configuration.....................................................................................................................11

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

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Quick Start Guide 3

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1 Transmitter installation

1.1 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 1-1).

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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Quick Start Guide 5

Figure 1-1: 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.

1.2 Setting the security switch

The security switch allows ( ) or prevents ( ) any configuration of the

transmitter.

Note

Default security is off ( ).

Setting the simulate switch

The security switch can be enabled or disabled in the software.

Procedure

1. If the transmitter is installed, secure the loop, and remove power.

2. Remove the housing cover opposite the field terminal side.

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6 Emerson.com/Rosemount

WARNING

Explosions could result in death or serious injury.

In an explosion-proof/flameproof installation, do not remove the

transmitter covers when power is applied to the unit.

3. Slide the security switch into the preferred position.

4. Reattach the transmitter housing cover.

Tighten the cover until there is no gap between the cover and

housing to comply with explosion proof requirements.

1.3 The security and simulate switches

The security and simulate switches are located on the electronics.

Figure 1-2: Transmitter Electronics Board

Aluminum Polished 316 SST

A. Simulate switch

B. Security switch

1.4 Connect the wiring and power up

Procedure to connect the wiring and power up the transmitter.

Prerequisites

•Use copper wire of sufficient size to ensure the voltage across the

transmitter power terminals does not drop below 9 Vdc. A minimum of

12 Vdc under normal operating conditions is recommended. Shielded

twisted pair Type A cable is recommended.

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Quick Start Guide 7

•Power supply voltage can be variable, especially under abnormal

conditions such as when operating on battery backup.

Procedure

1. To power the transmitter, connect the power leads to the terminals

indicated on the terminal block label.

Note

The Rosemount 3051 power terminals are polarity insensitive, which

means the electrical polarity of the power leads does not matter

when connecting to the power terminals. If polarity sensitive devices

are connected to the segment, terminal polarity should be followed.

When wiring to the screw terminals, the use of crimped legs is

recommended.

2. 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. No additional power

is needed.

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.

3. Ensure proper grounding. It is important the instrument cable shield

be:

a) Trimmed close and insulated from touching the transmitter

housing.

b) Connected to the next shield if cable is routed through a

junction box.

c) Connected to a good earth ground at the power supply end.

4. If transient protection is needed, refer to section Signal ground

wiring for grounding instructions.

5. Plug and seal unused conduit connections.

6. Reattach the transmitter covers.

a) The covers must only be capable of being released or

removed with the aid of a tool to comply with applicable

ordinary locations requirements.

Figure 1-3: Wiring

Aluminum Polished 316 SST

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8 Emerson.com/Rosemount

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

1.4.1 Signal ground wiring

Do not run signal wiring in conduit or open trays with power wiring, or near

heavy electrical equipment. Grounding terminations are provided on the

outside of the electronics housing and inside the Terminal Compartment.

These grounds are used when transient protect terminal blocks are installed

or to fulfill local regulations.

Procedure

1. Remove the field terminals housing cover.

2. Connect the wiring pair and ground as indicated in Figure 1-3

a) Trim the cable shield as short as practical and insulate from

touching the transmitter housing.

Note

Do NOT ground the cable shield at the transmitter; if the

cable shield touches the transmitter housing, it can create

ground loops and interfere with communications.

b) Continuously connect the cable shields to the power supply

ground.

c) Connect the cable shields for the entire segment to a single

good earth ground at the power supply.

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Quick Start Guide 9

Note

Improper grounding is the most frequent cause of poor

segment communications.

3. Replace the housing cover. It is recommended that the cover be

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

4. Plug and seal unused conduit connections.

Note

The Rosemount 3051HT polished 316 SST housing only provides

ground termination inside the terminal compartment.

Quick Start Guide June 2020

10 Emerson.com/Rosemount

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