Emerson Micro Motion 3700 User manual

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 [phone]-MASS
(1-800-522-6277)
• In Canada and Latin America, phone
[phone]
• In Asia, phone [phone]
• In the U.K., phone 0800 - 966 180 (toll-free)
• Outside the U.K., phone [phone]

1
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.
©2005, Micro Motion, Inc. All rights reserved. Micro Motion is a registered trademark of Micro Motion, Inc. The Micro
Motion and Emerson logos are trademarks of Emerson Electric Co. All other trademarks are property of their respective
owners.

2
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.

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.

4
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)
6
(152)
4
(102)
9 3/16
(234)
3 5/8
(92)
12
(305)
11
(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)

5
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
or
5 x M20 x 1.5 – 6H
Mounting surface
5 3/4
(147)
7 1/2
(191)
10 3/8
(265)
Case ground

6
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)

7
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
s
down
Conduit openings
left

8
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)

9
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