Emerson Rosemount 3095FC MultiVariable Quick Start Manual

Quick Start Guide

00825-0100-4832, Rev CA

Rosemount™ 3095FC MultiVariable™
Mass Flow Transmitter

with Modbus® Protocol

June 2016

Quick Start Guide

June 2016

NOTICE

This guide provides basic guidelines for the Rosemount 3095FC with Modbus Protocol. It does not provide
instructions for configuration, diagnostics, maintenance, service, or troubleshooting. Refer to the
Rosemount 3095FC MultiVariable Mass Flow Transmitter Reference Manual
manuals are also available electronically on EmersonProcess.com/Rosemount

for more instruction. The

.

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.

 Before connecting communications in an explosive atmosphere, make sure the instruments in the loop

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

 In an Explosion-Proof/Flame-Proof 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.

Contents

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

Connect wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Set jumpers and apply power . . . . . . . . . . . . . . 8

Establish communication . . . . . . . . . . . . . . . . . . 9

2

Verify configuration . . . . . . . . . . . . . . . . . . . . . . 9

Trim the transmitter . . . . . . . . . . . . . . . . . . . . . . 9

Product Certifications . . . . . . . . . . . . . . . . . . . . 11

June 2016

Quick Start Guide

1.0 Mount the transmitter

1.1 Installing the Rosemount 3095FC on a pipestand

The following steps must be taken to install the Rosemount 3095FC on a 2-in.
pipestand:

1. Install the pipestand using the pipestand documentation.

2. Remove the orifice/meter run from service.

3. Install the Rosemount 3095FC on a pipestand using clamps or mounting
brackets.

4. Connect the impulse lines.

1.2 Installing the Rosemount 3095FC on an orifice plate (direct
mount)

The following steps must be taken to install the Rosemount 3095FC on an orifice
plate:

1. Remove the orifice/meter run from service.

2. Install the Rosemount 3095FC on the meter run using a manifold and
hardware to secure the Rosemount 3095FC to the orifice flanges.

Figure 1. Gas Flow Application

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Quick Start Guide

A

4 × 1.75-in.

(44 mm)

D

4 × 1.75-in.

(44 mm)

4 × 2.25-in.

(57 mm)

C

4 × 1.75-in.

(44 mm)

4 × 1.50-in.

(38 mm)

B

4 × 2.88-in.

(73 mm)

1.3 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

June 2016

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 Tabl e 1 . If bolt material is
not shown in Tabl e 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.

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June 2016

B7M

316

316

316

SW

316

STM

316

R

B8M

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

Quick Start Guide

Bolt material Head Markings

Carbon Steel (CS)

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

Initial

Tor q ue

300 in-lb 650 in-lb

Final Torque

1.4 O-rings with flange adapters

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 below:

Rosemount 3051S/3051/2051/3095

A

B

C
D

Rosemount 1151

A

B

C
D

A. Flange adapter
B. O-ring
C. PFTE
D. Elastomer

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.

5

Quick Start Guide

2.0 Connect wiring

Use the following steps to wire the transmitter:

1. Remove the electronics housing cover on the side marked FIELD TERMINALS.

2. Wire the RTD.

Temperature is input through the Resistance Temperature Detector (RTD)
probe and circuitry. The Rosemount 3095FC provides terminations for a 2- or
3-wire 100-ohm platinum RTD with a IEC 751 curve. The RTD has an alpha (α)
equal to 0.00385.

The RTD mounts directly to the piping using a thermowell. RTD wires should
be protected by a metal sheath or by a conduit connected to a conduit wiring
fitting on the enclosure. The RTD wires connect to the three screw terminals
designated “RTD” on the Termination Board.

Wiring between the RTD and Rosemount 3095FC should be shielded wire,
with the shield grounded only at one end to prevent ground loops. Ground
loops cause RTD input signal errors.

Table 2 displays the RTD terminal connections for the various RTD probes.

June 2016

Table 2. RTD Signal Routing

Ter mi nal Designation 3-wire RTD 2-wire RTD

RTD + Signal positive input RTD + RTD +

RTD + Signal positive input RTD + Jumper to RTD +

RTD RET Return reference RTD RET RTD RET

3. Wire the power supply.

The terminals are labeled CHG+ for positive power connection and CHG- for
negative power connection on a label on the termination board. These
connections provide the input voltage and power for the battery charging
circuit. The maximum voltage that can be applied to the CHG+/CHG­terminals is 28 Volts dc.

Pin Signal Description

1 CHG+ Battery 8.0 to 28 V Power

2 CHG- Battery Common

4. Communications wiring

The Local Operator Interface (LOI) port provides direct communications
between the Rosemount 3095FC and the serial port of an operator interface
device, such as an IBM compatible PC using an EIA-232 (RS-232) link. The
interface allows access to the Rosemount 3095FC (using Rosemount User
Interface Software) for configuration and transfer of stored data.

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