Emerson Rosemount 2051 Bedienungsanleitung

Quick Start Guide

00825-0400-4101, Rev AD

October 2016

Rosemount™2051 Pressure Transmitter

and Rosemount 2051CF Series Flowmeter

with PROFIBUS®PA Protocol

00825-0400-4101_RevAD.fm Page 1 Monday, October 17, 2016 4:24 AM

October 2016

Quick Start Guide

NOTICE

This installation guide provides basic guidelines for Rosemount 2051 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 2051 PROFIBUS PA Reference Manual

for more instruction. This manual is also available electronically on EmersonProcess.com/Rosemount.

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 the Rosemount

2051 PROFIBUS PA Reference Manual for any restrictions associated with a safe installation.

In an Explosion-proof/Flameproof installation, do not remove the transmitter covers when power is

applied to the unit.

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.

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

Unless marked, the conduit/cable entries in the transmitter housing use a 1/2–14 NPT thread form. Only

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

Contents

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

Consider housing rotation . . . . . . . . . . . . . . . . . 7

Set jumpers and switches . . . . . . . . . . . . . . . . . . 8

Connect wiring and power up . . . . . . . . . . . . . . 8

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

Trim the transmitter . . . . . . . . . . . . . . . . . . . . . 15

Product Certifications . . . . . . . . . . . . . . . . . . . 16

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Quick Start Guide

October 2016

1.0 Mount the transmitter

1.1 Liquid applications

1. Place taps to the side of the line.

2. Mount beside or below the taps.

3. Mount the transmitter so the

drain/vent valves are oriented upward.

1.2 Gas applications

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

2. Mount beside or above the taps.

1.3 Steam applications

1. Place taps to the side of the line.

2. Mount beside or below the taps.

3. Fill impulse lines with water.

Flow

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October 2016

Quick Start Guide

Figure 1. Mounting Options

Rosemount 2051C

Panel mount(1)

1. Panel bolts are customer supplied.

Pipe mount

Coplanar flange

Traditional flange

Rosemount 2051T

00825-0400-4101_RevAD.fm Page 4 Monday, October 17, 2016 4:24 AM

Quick Start Guide

October 2016

1.4 Bolting considerations

If the transmitter installation requires assembly of the process flanges, manifolds,

or flange adapters, follow these assembly guidelines to ensure a tight seal for

optimal performance characteristics of the transmitters. Use only bolts supplied

with the transmitter or sold by Emerson™as spare parts. Figure 2 illustrates

common transmitter assemblies with the bolt length required for proper

transmitter assembly.

Figure 2. Common Transmitter Assemblies

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 or stainless steel. Confirm the material by viewing

the markings on the head of the bolt and referencing Table 1. If bolt material is

not shown in Table 1, contact the local Emerson Process Management

representative for more information.

Use the following bolt installation procedure:

1. Carbon steel bolts do not require lubrication and the stainless steel bolts are

coated with a lubricant to ease installation. However, no additional lubricant

should be applied when installing either type of bolt.

2. Finger-tighten the bolts.

3. Torque the bolts to the initial torque value using a crossing pattern. See

Table 1 for initial torque value.

4. Torque the bolts to the final torque value using the same crossing pattern. See

Table 1 for final torque value.

5. Verify that the flange bolts are protruding through the isolator plate before

applying pressure.

4 × 1.75-in. (44 mm)

4 × 1.75-in.

(44 mm)

4 × 2.88-in. (73 mm)

4 × 1.75-in. (44 mm)

4 × 1.50-in.

(38 mm)

4 × 2.25-in.

(57 mm)

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October 2016

Quick Start Guide

1.5 O-rings with flange adapters

Whenever the flanges or adapters are removed, visually inspect the O-rings.

Replace them if there are any signs of damage, such as nicks or cuts. If you replace

the O-rings, re-torque the flange bolts and alignment screws after installation to

compensate for seating of the PTFE O-ring.

Table 1. Torque Values for the Flange and Flange Adapter Bolts

Bolt material Head markings Initial torque Final torque

Carbon Steel (CS) 300 in-lb 650 in-lb

Stainless Steel (SST) 150 in-lb 300 in-lb

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 below:

A. Flange adapter

B. O-ring

C. PTFE based (profile is square)

D. Elastomer (profile is round)

B7M

316

STM

316

B8M

Rosemount 3051S/3051/2051

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Quick Start Guide

October 2016

1.6 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.

1.7 In-line gage transmitter orientation

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

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 3.)

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

dust, and lubrication by mounting the transmitter so that the process can drain

away.

Figure 3. In-line Gage Low Side Pressure Port

A. Low side pressure port (atmospheric reference)

2.0 Consider housing rotation

To improve field access to wiring or to better view the optional LCD display:

1. Loosen the housing rotation set screw.

2. First rotate the housing clockwise to the desired location. If the desired

location cannot be achieved due to thread limit, rotate the housing counter

clockwise to the desired location (up to 360° from thread limit).

3. Retighten the housing rotation set screw.

Figure 4. Transmitter Housing Set Screw

A. Housing rotation set screw (5/64-in.)

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October 2016

Quick Start Guide

3.0 Set jumpers and switches

3.1 Security

After the transmitter is configured, you may want to protect the configuration

data from unwarranted changes. Each transmitter is equipped with a security

jumper that can be positioned ON to prevent the accidental or deliberate change

of configuration data. The jumper is labeled “Security”. The security jumper also

prevents changes made using the Local Operator Interface.

3.2 Simulate

The simulate jumper is used in conjunction with the analog input (AI) block. This

jumper is used to simulate the pressure measurement and is used as a lock-out

feature for the AI block. To enable the simulate feature, the jumper must be

moved to the ON position after power is applied. This feature prevents the

transmitter from being accidentally left in simulate mode.

Figure 5. Transmitter Jumper Locations

4.0 Connect wiring and power up

Use the following steps to wire the transmitter:

1. Remove the housing cover on the field terminals side.

2. Connect the power leads to the terminals indicated on the terminal block

label.

Power terminals are polarity insensitive - connect positive or negative to

either 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.

ROSEMOUNT 2051

PROFIBUS PA OUTPUT

00825-0400-4101_RevAD.fm Page 8 Monday, October 17, 2016 4:24 AM

Quick Start Guide

October 2016

4. Ensure proper grounding. It is important that the instrument cable shield:

Be trimmed close and insulated from touching the transmitter housing

Be connected to the next shield if cable is routed through a junction box

Be connected to a good earth ground at the power supply end

5. Plug and seal unused conduit connections.

6. 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.

7. Replace the housing cover.

Figure 6. Terminals

A. Power terminals

B. Ground terminal

00825-0400-4101_RevAD.fm Page 9 Monday, October 17, 2016 4:24 AM

October 2016

Quick Start Guide

Figure 7. Wiring

4.1 Signal wiring grounding

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. See Step 2 below for more information on how the cable shield

should be grounded.

1. Remove the field terminals housing cover.

2. Connect the wiring pair and ground as indicated in Figure 8. The cable shield

should:

Be trimmed close and insulated from touching the transmitter housing.

Continuously connect to the termination point.

Be connected to a good earth ground at the power supply end.

A. 6234 ft (1900 m) max

(depending on cable characteristics)

B. Integrated power conditioner and filter

C. Terminators

D. Power supply

E. DP/PA coupler/link

F. Trunk

G. DP network

H. Signal wiring

I. Spur

J. PROFIBUS PA device

00825-0400-4101_RevAD.fm Page 10 Monday, October 17, 2016 4:24 AM

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