Emerson Rosemount 2051 Wireless Series Bedienungsanleitung

Quick Start Guide

00825-0400-4101, Rev DB

October2023

Rosemount™ 2051 Pressure

Transmitter and Rosemount 2051CF

Series Flow Meter

with PROFIBUS® PA Protocol

Safety messages

This guide provides basic guidelines for installing the Rosemount 2051 Transmitter.

It does not provide instructions for configuration, diagnostics, maintenance, service,

troubleshooting, explosionproof, flameproof, or intrinsically safe (IS) installations.

NOTICE

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 Sales Representative.

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. Review the

approvals section of this manual 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 explosionproof/flameproof installation, do not remove the transmitter covers when

power is applied to the transmitter.

Process leaks may cause harm or result in death.

Install and tighten process connectors before applying pressure.

Do not attempt to loosen or remove flange bolts while the transmitter is in service.

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.

Before connecting a handheld communicator in an explosive atmosphere, be sure that

the instruments in the loop are installed in accordance with intrinsically safe or non-

incendive field wiring practices.

In an explosionproof/flameproof installation, do not remove the transmitter covers when

power is applied to the transmitter.

WARNING

Replacement equipment or spare parts not approved by Emerson 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 as spare parts.

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NOTICE

Improper assembly of manifolds to traditional flange can damage sensor module.

For safe assembly of manifold to traditional flange, bolts must break back plane of flange

web (bolt hole) but must not contact sensor module housing.

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.

Contents

Mounting the transmitter........................................................................................................... 5

Rotate housing........................................................................................................................... 12

Setting jumpers and switches.................................................................................................. 13

Connect wiring and power up..................................................................................................14

Basic configuration.................................................................................................................... 19

Trim the transmitter.................................................................................................................. 22

Rosemount 2051 product certifications..................................................................................23

October2023 Quick Start Guide

Quick Start Guide 3

Quick Start Guide October2023

4 Emerson.com

1 Mounting the transmitter

1.1 Mount the transmitter in liquid applications

Procedure

1. Place taps to the side of the line.

2. Mount the transmitter beside or below the taps.

Mount the transmitter so the drain/vent valves are oriented

upward.

1.2 Mount the transmitter in gas applications

Procedure

1. Place taps on the top or side of the line.

2. Mount the transmitter beside or above the taps.

October2023 Quick Start Guide

Quick Start Guide 5

1.3 Mount the transmitter in steam applications

Procedure

1. Place taps to the side of the line.

2. Mount the transmitter beside or below the taps.

3. Fill impulse lines with water.

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1.4 Panel and pipe mounting

Figure 1-1: Panel and pipe mounting

Panel mount(1) Pipe mount

Coplanar flange

Traditional flange



Rosemount 2051

(1) 5/16 × 1½ panel bolts are customer supplied.

1.5 Install bolts

If the transmitter installation requires assembly of the process

flanges, manifolds, or flange adapters, follow the assembly

October2023 Quick Start Guide

Quick Start Guide 7

guidelines to ensure a tight seal for optimal performance

characteristics of the transmitter.

Use only bolts supplied with the transmitter or sold by Emerson as

spare parts. Figure 1-2 illustrates common transmitter assemblies

with the bolt length required for proper transmitter assembly.

Figure 1-2: Common transmitter assemblies

4 × 1.75-in.

(44 mm)

4 × 1.75-in.

(44 mm)

4 × 2.25-in.

(57 mm)

4 ×1.75-in.

(44 mm) 4 ×1.50-in.

(38 mm)

4 × 2.88-in.

(73 mm)

A. Transmitter with coplanar flange

B. Transmitter with coplanar flange and optional flange adapters

C. Transmitter with traditional flange and optional flange adapters

D. Transmitter with coplanar flange and optional manifold and

flange adapters

Bolts are typically carbon steel (CS) or stainless steel (SST). Confirm

the material by viewing the markings on the head of the bolt and

referencing Table 1-1. If bolt material is not shown in Table 1-1,

contact a local Emerson representative for more information.

Carbon steel bolts do not require lubrication, and the stainless steel

bolts are coated with a lubricant to ease installation. However, do not

apply any additional lubricant when installing either type of bolt.

Procedure

1. Tighten the bolts by hand.

2. Torque the bolts to the initial torque value using a crossing

pattern.

See Table 1-1 for initial torque value.

3. Torque the bolts to the final torque value using the same

crossing pattern.

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See Table 1-1 for final torque value.

4. Verify the flange bolts are protruding through the sensor

module bolt holes before applying pressure.

Table 1-1: Torque values for the flange and flange adapter bolts

Bolt

material

Head markings Initial

torque

Final torque

B7M



300 in.-lb. 650 in.-lb.

SST

316

STM

316

B8M



150 in.-lb. 300 in.-lb.

1.6 O-rings

The two styles of Rosemount flange adapters (Rosemount

3051/2051/2024/3095) each require a unique O-ring (see Figure 1-3).

Use only the O-ring designed for the corresponding flange adapter.

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 in Figure 1-3. When compressed, PTFE O-rings tend to cold

flow, which aids in their sealing capabilities.

October2023 Quick Start Guide

Quick Start Guide 9

Figure 1-3: O-rings

A. Flange adapter

B. O-ring

C. PFTE based

D. Elastomer

NOTICE

Replace PTFE O-rings if you remove the flange adapter.

1.7 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, and IP68. 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.

1.8 In-line gauge transmitter orientation

The low side pressure port (atmospheric reference) on the in-line

gauge 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 1-4.)

Keep the vent path free of any obstruction, including but not limited

to paint, dust, and lubrication by mounting the transmitter so fluids

can drain away.

Quick Start Guide October2023

10 Emerson.com

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