Emerson Micro Motion Elite Coriolis CMF400 Bedienungsanleitung

Micro Motion

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 1-800-522-MASS

(1-800-522-6277)

• In Canada and Latin America, phone

(303) 530-8400

• 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 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).

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

owners.

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)

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

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

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

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.

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)

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

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

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