Emerson Rosemount 2088 Manuale utente

Quick Start Guide

00825-0100-4690, Rev GD

February 2019

Rosemount™ 2088, 2090P, and 2090F

Pressure Transmitters

with 4–20 mA HART® and 1–5 Vdc HART

Low Power Protocol

Contents

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

Set the jumpers..............................................7

Connect the wiring and power....................... 9

Verify configuration..................................... 12

Trim the transmitter.................................... 14

Safety instrumented systems.......................16

Product Certifications.................................. 19

Rosemount 2088 and 2090 Declaration of

Conformity.................................................. 40

Quick Start Guide February 2019

2 Rosemount 2088, 2090P, and 2090F Pressure Transmitters

1 Mount the transmitter

1.1 Rosemount™ 2088

Mount directly to the impulse line without using an additional mounting

bracket or mount directly to a wall, panel, or two-inch pipe using an optional

mounting bracket.

1.2 Rosemount™ 2090P

Mount directly to the process pipe using an existing weld spud, or have a

skilled welder install a new weld spud using a TIG welder. Refer to Reference

Manual for complete welding instructions. Improper installation may result in

weld spud distortion. Recommended mounting in upright or horizontal

position to allow proper draining of vent.

1.3 Rosemount™ 2090F

Mount directly to the process pipe using a standard sanitary fitting (either a

1.5- or 2-in. Tri Clamp connection). Recommended mounting in upright or

horizontal position to allow proper draining of vent.

Figure 1-1: Transmitter Direct Mounting

Do not apply torque directly to the electronics housing. To avoid damage,

apply torque only to the hex-shaped process connection.

Rosemount

2088

Rosemount 2090P Rosemount

2090F

A. ½–14 NPT female process connection

B. Vessel wall

C. Weld spud

D. O-ring

E. 1½- or 2-in. Tri Clamp connection

February 2019 Quick Start Guide

Quick Start Guide 3

Figure 1-2: Panel and Pipe Mounting

Panel mount Pipe mount

1.4 Liquid flow applications

Transmitter mounting procedure for liquid flow applications.

Procedure

1. Place taps to the side of the line.

2. Mount beside or below the taps.

Example

1.5 Gas flow applications

Transmitter mounting procedure for gas flow applications.

Procedure

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

2. Mount level or above the taps.

Quick Start Guide February 2019

4 Rosemount 2088, 2090P, and 2090F Pressure Transmitters

Example

1.6 Steam flow applications

Transmitter mounting procedure for steam flow applications.

Procedure

1. Place taps to the side of the line.

2. Mount beside or below the taps.

3. Fill impulse lines with water.

Example

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.

February 2019 Quick Start Guide

Quick Start Guide 5

1.8 Gage transmitter orientation

The low side pressure port (atmospheric reference) on the gage transmitters

with aluminum housings are 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 1-3.)

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 1-3: Gage Low Side Pressure Port

A. Low side pressure port (atmospheric reference)

Quick Start Guide February 2019

6 Rosemount 2088, 2090P, and 2090F Pressure Transmitters

2 Set the jumpers

If alarm and security jumpers are not installed, the transmitter will operate

normally with the default alarm condition alarm high and the security off.

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. 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. Reposition the jumper. Avoid contact with the leads and the terminals.

See Figure 2-1 for the location of the jumper and the ON and OFF

positions.

5. Reattach the transmitter cover. The cover must be fully engaged to

comply with explosion-proof requirements.

Example

Figure 2-1: Rosemount 2088 Transmitter Electronics Board

Without LCD display With LCD display

Low power without LCD display Low power with LCD display

February 2019 Quick Start Guide

Quick Start Guide 7

A. Alarm

B. Security

Quick Start Guide February 2019

8 Rosemount 2088, 2090P, and 2090F Pressure Transmitters

3 Connect the wiring and power

Use the following steps to wire the transmitter:

Procedure

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

2. Connect the positive lead to the “PWR/COMM+” terminal, and the

negative lead to the “–” terminal.

3. 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

Note

Installation of the transient protection terminal block does not provide

transient protection unless the Rosemount 2088 case is properly

grounded.

Note

Do not connect the powered signal wiring to the test terminals. Power

could damage the test diode in the test connection. Twisted pair cable

yields best results. For high EMI/RFI environments, shielded twisted

pair cable should be used. Use 24 AWG or larger wire and do not

exceed 5,000 ft. (1,500 m).

4. Plug and seal unused conduit connections.

5. 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. Replace the housing cover.

Figure 3-1 and Figure 3-2 show wiring connections necessary to power

a Rosemount 2088 Transmitter and enable communications with a

hand-held Field Communicator:

February 2019 Quick Start Guide

Quick Start Guide 9

Example

Figure 3-1: Bench Hook-up Wiring Diagrams (4–20 mA Transmitters)

A. RL ≥ 250Ω

B. 24 Vdc supply

C. Current meter

Figure 3-2: Field Wiring for Rosemount 2088 — Low Power Option Code N

A. Voltmeter

B. Power supply

3.1 Power supply

The dc power supply (Option S: 10.5–42.4 V and Option N: 6–14 V) should

provide power with less than two percent ripple. The total resistance load is

the sum of the resistance of the signal leads and the load resistance of the

controller, indicator, and related pieces. The resistance of intrinsic safety

barriers, if used, must be included.

Quick Start Guide February 2019

10 Rosemount 2088, 2090P, and 2090F Pressure Transmitters

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