Emerson Micro Motion Elite Coriolis CMF400 User manual

Micro Motion
TM
Micro Motion®
CMF400 Sensor
Installation Instructions
Quick Reference Guide
P/N 3006075, Rev. D
May 2003
For online technical support, use the EXPERT2™ system at
www.expert2.com. To speak to a customer service
representative, call 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 the
Micro Motion®ELITE®CMF400 sensor. For more information, refer to
the instruction manual that was shipped with the sensor.
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 internet at www.micromotion.com/atex or through
your local Micro Motion support center.
INTRODUCTION
The sensor makes up one part of a Coriolis flowmeter. The other part is a
transmitter.
Installation options
The CMF400 sensor is available with:
• An integral core processor for connecting to a 4-wire remotely
mounted transmitter or to a user-supplied remote host (see Figure 1 or
Figure 2).
• A 9-wire junction box for connecting to a remotely mounted
transmitter, or to a remotely mounted core processor (see Figure 3 or
Figure 4).
©2003, 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
Figure 1. CMF400 sensor with integral booster amplifier and
core processor
Calibration tag
Process fitting
Booster amplifier
Approval
tag
Sensor
housing
Core processor housing
Customer tag
(if requested)

3
Figure 2. CMF400 sensor with remote booster amplifier and
core processor
Core
processor
housing
Process
fitting
Intrinsically
safe wiring Explosion-proof
wiring
Sensor
housing
Approval tag
Approval
tag
Factory-
supplied
wiring
Calibration
tag
Customer
tag (if
requested)
Remote
booster
amplifier

4
Figure 3. CMF400 sensor with integral booster amplifier and
junction box
Process
fitting
Calibration
tag
Sensor
housing
Junction box
Approval tag
Customer tag
(if requested)
Booster
amplifier

5
Figure 4. CMF400 sensor with remote booster amplifier and
junction box
STEP 1. Determining a location
Choose a location for the sensor based on the requirements described in
this section.
Approval
tag
Process
fitting Explosion-proof
wiring
Junction
box Approval
tag
Sensor
housing
Intrinsically safe
wiring
Remote
booster
amplifier
Factory-
supplied
wiring
Customer
tag (if
requested)
Calibration
tag

6
General guidelines
The following conditions must be met:
• Before operation, you must be able to stop flow through the sensor.
(During the zeroing procedure, flow must be stopped completely, and
the sensor must be full of process fluid.)
• During operation, the sensor must remain full of process fluid.
• The sensor must be installed in an area that is compatible with the
classification specified on the sensor approvals tag (see Figures 1-4).
Hazardous area installations
Make sure the hazardous area specified on the sensor approvals tag is
suitable for the environment in which the sensor is installed. See
Figures 1-4. For installation in an area that requires intrinsic safety, refer
to Micro Motion UL, CSA, or ATEX documentation, shipped with the
sensor or available from the Micro Motion web site.
For a complete list of hazardous area classifications for Micro Motion
sensors, refer to the Expert2system at www.expert2.com.
Environmental limits
Install the sensor in a location that falls within the following limits:
• Process fluid temperature limits between –40 to +140 °F
(–40 to +60 °C) for the integrally mounted booster amplifier with
either the core processor or junction box.
• Process fluid temperature limits between –400 to +400 °F
(–240 to +200 °C) for the remotely mounted booster amplifier with
either the core processor or junction box.
• Ambient temperature limits between –40 to +140 °F (–40 to +60 °C)
with core processor or junction box.
For ATEX approvals, process fluid temperature can be further restricted
by ambient temperatures. For guidelines, go to
www.micromotion.com/atex.

7
Maximum wiring distances
Use these guidelines for calculating maximum wiring distances.
Maximum distance between sensor and transmitter depends on cable
type. See Table 1.
.
The sensor is shipped with 10 feet (3 meters) of cable for connecting to
the remote booster amplifier. For longer cable lengths, up to 60 ft (20 m),
contact Micro Motion.
STEP 2. Orienting the sensor
The sensor will function properly in any orientation if the sensor tubes
remain filled with process fluid. Micro Motion recommends orienting the
CMF400 sensor as shown in Figure 5.
Flow direction arrow
The sensor has a flow direction arrow (see Figures 1-4) to help you
configure the transmitter for flow direction. If possible, install the sensor
so that the flow direction arrow matches actual process flow.
Table 1. Maximum cable lengths
Cable type Wire gauge Maximum length
Micro Motion 9-wire to an MVD
transmitter or core processor Not applicable 60 feet (20 meters)
Micro Motion 9-wire to all other
transmitters Not applicable 1000 feet (300 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)

8
Figure 5. Preferred orientations
STEP 3. Mounting the sensor
Use your common practices to minimize torque and bending load on
process connections. Figure 6 illustrates how to mount the sensor. If
possible, install wiring with the conduit opening pointed downward to
reduce the risk of condensation or excessive moisture.
Fluid being measured Preferred orientation
Liquids Tubes down
Horizontal pipeline
Gases Tubes up
Horizontal pipeline
Slurries Flag mount
Vertical pipeline
Self-draining
CAUTION
Using the sensor to support piping can damage the
meter or cause measurement error.
Do not use flowmeter to support pipe.
Flow

9
Figure 6. Mounting the sensor
WARNING
Explosion hazard
The CMF400 has drain plugs, which look similar to purge
fittings. The drain plugs must remain sealed at all times.
Do not remove or damage CMF400 drain plugs.
CMF400
drain plugs