Emerson Micro Motion 3700 Manuel utilisateur

Model 3700 Transmitter

(MVD) or

Model 3350 Peripheral

Installation Instructions for

Field-Mount

Quick Reference Guide

P/N 20001008, Rev. B

August 2005

For technical support, phone the support center nearest you:

• In the U.S.A., phone 1-800-522-MASS

(1-800-522-6277)

• In Canada and Latin America, phone

(303) 527-5200

• In Asia, phone (65) 6770-8155

• In the U.K., phone 0800 - 966 180 (toll-free)

• Outside the U.K., phone +31 (0) 318 495 670

BEFORE YOU BEGIN

This quick reference guide explains basic installation guidelines for

installing the Micro Motion®Model 3350/3700 MVD applications

platform.

For information on I.S. applications, refer to Micro Motion approval

documentation.

For complete instructions about configuration, maintenance, and service,

refer to the instruction manual shipped with the transmitter.

WARNING

Improper installation in a hazardous area can cause

an explosion.

For information about hazardous applications, refer to

Micro Motion approval documentation, shipped with the

transmitter or available from the Micro Motion web site.

WARNING

Hazardous voltage can cause severe injury or death.

Install transmitter and complete all wiring before

supplying power.

CAUTION

Improper installation could cause measurement error

or meter failure.

Follow all instructions to ensure transmitter will operate

correctly.

Motion and Emerson logos are trademarks of Emerson Electric Co. All other trademarks are property of their respective

owners.

European installations

This Micro Motion product complies with all applicable European

directives when properly installed in accordance with the instructions in

this quick reference guide. Refer to the EC declaration of conformity for

directives that apply to this product.

The EC declaration of conformity, with all applicable European

directives, and the complete ATEX Installation Drawings and

Instructions are available on the web at www.micromotion.com/atex or

through your local Micro Motion support center.

Installation kit

The Model 3350/3700 installation kit includes the parts shown in

Figure 1.

Figure 1. Field-mount installation kit

4 x Flat washer

4 x Lock washer

4 x M8x16 Bolt assemblies

Mounting bracket

Transmitter can be oriented

on bracket. See Step 3.

STEP 1. Choosing a location

Choose a location for the transmitter based on the requirements described

below.

Environmental requirements

Install the Model 3350/3700 according to specified limits:

• Ambient temperature: –4 to +140 °F (–20 to +60 °C)

Dimensions

See Figures 2, 3, and 4 for Model 3350/3700 dimensions.

Visibility of tags

To ensure personal and system safety, all tags attached to the housing

must remain visible. Clean them as often as necessary. Replace tags that

are damaged, missing, or worn. See Figure 3 for location of approvals tag.

WARNING

Improper installation in a hazardous area could cause

an explosion.

Install the transmitter in an area that is compatible with

the rating on the approvals tag. See Figure 3.

Figure 2. Dimensions – face view

Figure 3. Dimensions – top view

4 x 5/16-inch

(9 mm)

diameter

Display cover can be

rotated as needed

Mounting bracket can

be rotated as needed

2 13/16

(71)

(152)

(102)

9 3/16

(234)

3 5/8

(92)

(305)

(279)

inches

(mm)

Approvals tag

5 1/16-inch (129 mm)

clearance for removal of

circuit boards

11 5/16

(288)

6 1/8

(158)

8 11/16

(221)

15 1/2

(394)

inches

(mm)

Figure 4. Dimensions – conduit openings view

Cable lengths

Maximum cable length from the sensor to the Model 3700 transmitter

depends on the installation type and cable type:

• 4-wire remote transmitter: see Figure 5, then refer to Table 1 for

maximum length of the 4-wire cable.

• Remote core processor with remote transmitter: see Figure 6, then

refer to Table 1 for maximum length of the 4-wire cable and the

9-wire cable.

If you are installing the Model 3350 applications peripheral in

combination with a transmitter, the maximum cable length from the

transmitter’s frequency output to the Model 3350’s frequency input is

500 feet (150 meters).

2 x 2 13/17

(71)

inches

(mm) 1 7/8

(48)

2 x 15/16

(24)

5 x 3/4–14 NPT

5 x M20 x 1.5 – 6H

Mounting surface

5 3/4

(147)

7 1/2

(191)

10 3/8

(265)

Case ground

Figure 5. 4-wire remote transmitter

Figure 6. Remote core processor with remote transmitter

Table 1. Maximum cable lengths

Cable type Wire gauge Maximum length

Micro Motion 9-wire Not applicable 60 feet (20 meters)

Micro Motion 4-wire Not applicable 1000 feet (300 meters)

User-supplied 4-wire

• Power wires (VDC) 22 AWG (0,35 mm2) 300 feet (90 meters)

20 AWG (0,5 mm2) 500 feet (150 meters)

18 AWG (0,8 mm2) 1000 feet (300 meters)

• Signal wires (RS-485) 22 AWG (0,35 mm2) or larger 1000 feet (300 meters)

Cable from transmitter’s FO

to Model 3350’s FI(1)

(1) Applies only to the Model 3300 applications peripheral when receiving frequency input

from a remote Micro Motion transmitter such as an IFT9701 or RFT9739.

Not applicable 500 feet (150 meters)

Model 3700

4-wire cable

Sensor

Core processor

(standard or enhanced)

Sensor

Junction box 9-wire cable

4-wire cable

Model 3700

Core processor

(standard only)

STEP 2. Preparing conduit openings for ATEX Zone 1

If the Model 3350/3700 carries an ATEX Zone 1 approval:

1. Remove thread protectors from conduit openings (see Figure 7).

2. Install factory-supplied cable glands or user-supplied EExe cable

entry devices in conduit openings that are in use.

3. Install EExe plugs in conduit openings that are not in use.

STEP 3. Orienting the Model 3350/3700 (optional)

The Model 3350/3700 can be oriented on the mounting bracket as

needed, and the display cover can be rotated on the applications platform.

Figure 7 provides orientation examples.

To orient the Model 3350/3700:

1. Use the four supplied mounting bolt assemblies.

2. Using a 13 mm hex wrench, install the bolt assemblies to 12 ft-lb

(16 Nm) of torque.

To rotate the display cover, if needed, see the transmitter installation

manual.

Figure 7. Orientation examples

Conduit openings for

non-intrinsically safe

input/output wiring

Conduit openings for

intrinsically safe

sensor wiring Display cover

Conduit openings

right

Conduit opening

down

Conduit openings

left

STEP 4. Mounting the applications platform

For flat-surface mounting, see Figure 8.

For pole mounting, see Figure 9.

Figure 8. Mounting to a flat surface

Figure 9. Mounting to a pole

4 x 5/16-inch or M8 bolt

(user-supplied)

• Mount all four bolts to the same surface.

• If mounting surface is not flat, use

washers to shim the bracket.

• Do not secure bolts to separate beams,

girders, wall studs, etc., which can move

independently.

4 x 5/16 inch nut

(user-supplied)

2 x 5/16-inch U bolt for

2-inch pipe (user-supplied)

STEP 5. Mounting the core processor

This step is required only for remote core processor with remote

transmitter installations (see Figure 6). If you have a 4-wire remote

installation, go to Step 6.

Figure 10 shows the remote core processor and mounting bracket. Using

the mounting bracket, mount the core processor in a location compatible

with the cable length requirements discussed in Step 1.

Figure 10. Remote core processor components

STEP 6. Connecting input and output wiring

Figure 11 shows the location of the wiring terminals on the Model

3350/3700.

1. Using a flat-head screwdriver, loosen the four captive screws that

secure the display cover to the housing.

2. Connect input/output wiring to the appropriate terminals on the gray

terminal block. Refer to Table 2 and to the label attached to the back

of the display cover (shown in Figure 12).

• Use 22 to 16 AWG (0,35 to 1,5 mm2) twisted-pair shielded wire.

• Ground the cable shields at a single point only.

• If more than two wires must be connected to a single terminal, use

a butt splice or spade lug to connect the wires.

Core processor

Lower conduit ring

End-cap

Mounting bracket

Core processor lid

Upper conduit ring

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