Emerson Rosemount 644 Manual de usuario

Quick Start Guide

00825-0600-4728, Rev AB

July 2022

Rosemount™ 644 Rail Mount

Temperature Transmitter

with RK Option and HART® 7 Protocol

Contents

About this guide...........................................................................................................................3

System readiness......................................................................................................................... 5

Transmitter installation................................................................................................................ 6

Configuration...............................................................................................................................9

Mount the transmitter................................................................................................................11

Safety instrumented systems..................................................................................................... 13

Product certifications................................................................................................................. 14

China RoHS................................................................................................................................ 27

Quick Start Guide July 2022

2 Emerson.com/Rosemount

1 About this guide

This guide provides basic guidelines for installing the Rosemount 644R Rail

Mount Temperature Transmitter. It does not provide instructions for

detailed configuration, diagnostics, maintenance, service, troubleshooting,

or installation. Refer to the Rosemount 644R Rail Mount Reference Manual

for more instruction. The manual and this guide are also available

electronically on Emerson.com/Rosemount.

Safety messages

WARNING

The products described in this document are NOT designed for nuclear-

qualified applications.

Using non-nuclear qualified products in applications that require nuclear-

qualified hardware or products may cause inaccurate readings.

For information on Rosemount nuclear-qualified products, contact your

local Emerson Sales Representative.

Follow instructions

Failure to follow these installation guidelines could result in death or serious

injury.

Ensure only qualified personnel perform the installation.

Physical access

Unauthorized personnel may potentially cause significant damage to and/or

misconfiguration of end users’ equipment. This could be intentional or

unintentional and needs to be protected against.

Physical security is an important part of any security program and

fundamental to protecting your system. Restrict physical access by

unauthorized personnel to protect end users’ assets. This is true for all

systems used within the facility.

July 2022 Quick Start Guide

Quick Start Guide 3

WARNING

Explosions

Explosions could result in death or serious injury.

Installation of the transmitters in a hazardous environment must be in

accordance with the appropriate local, national, and international

standards, codes, and practices. Please review the Product Certifications

section for any restrictions associated with a safe installation.

Do not remove the connection head cover in explosive atmospheres

when the circuit is live.

Before connecting a handheld communicator in an explosive

atmosphere, ensure the instruments are installed in accordance with

intrinsically safe or non-incendive field wiring practices.Verify the

operating atmosphere of the transmitter is consistent with the

appropriate hazardous locations certifications.

All connection head covers must be fully engaged to meet explosion-

proof requirements.

Process leaks

Process leaks could result in death or serious injury.

Do not remove the thermowell while in operation.

Install and tighten thermowells and sensors before applying pressure.

Electrical shock

Electrical shock could cause death or serious injury.

Avoid contact with the leads and terminals. High voltage that may be

present on leads can cause electrical shock.

CAUTION

Conduit/cable entries

Unless otherwise marked, the conduit/cable entries in the housing

enclosure use a ½–14 NPT form. Only use plugs, adapters, glands, or

conduit with a compatible thread form when closing these entries.

Entries marked "M20" are M20 x 1.5 thread form.

When installing in a hazardous location, use only appropriately listed or

Ex certified plugs, glands, or adapters in cable/conduit entries.

Quick Start Guide July 2022

4 Emerson.com/Rosemount

2 System readiness

2.1 Confirm HART revision capability

If using HART®-based control or asset management systems, confirm the

HART capability of those systems prior to transmitter installation. Not all

systems are capable of communicating with HART Revision 7 protocol. This

transmitter is a HART Revision 7 device.

2.2 Confirm correct device driver

•Verify the latest Device Driver files are loaded on your systems to ensure

proper communications.

•Download the latest Device Driver at Emerson.com/Rosemount.

July 2022 Quick Start Guide

Quick Start Guide 5

3 Transmitter installation

3.1 Safety messages

Instructions and procedures in this section may require special precautions

to ensure the safety of the personnel performing the operations.

Information that potentially raises safety issues is indicated by a warning

symbol ( ). Please refer to the following safety messages before performing

an operation preceded by this symbol.

WARNING

Failure to follow these installation guidelines could result in death or

serious injury.

Ensure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

Do not remove the housing covers in explosive atmospheres when the

circuit is live.

Before connecting a handheld communicator in an explosive

atmosphere, ensure the instruments are installed in accordance with

intrinsically safe or non-incendive field wiring practices.

Verify that the operating atmosphere of the transmitter is consistent

with the appropriate hazardous locations certifications.

All connection head covers must be fully engaged to meet explosion-

proof requirements.

Process leaks could result in death or serious injury.

Do not remove the thermowell while in operation.

Install and tighten thermowells and sensors before applying pressure.

Electrical shock could cause death or serious injury.

Use extreme caution when making contact with the leads and terminals.

Quick Start Guide July 2022

6 Emerson.com/Rosemount

3.2 Connections

Single input

2 w / 3 w / 4 w RTD

or lin. R

TC (internal CJC or

external 2 w / 3 w /

4 w CJC)(1)

mV 3 w / 4 w

potentiometer

42 44

43 I1

41 42 44

CJC

41 42 44

4I1

(1) When using thermocouple input, the transmitter can be configured for either

constant, internal or external CJC via a Pt100 or Ni100 sensor. This must be

selected during device configuration.

Dual inputs

Input 1

41 42 44

43 41 42 44

51 52 54

53 51 52 54

41 42 44

4I2

43 I1 +

CJC

4I1

41 42 44

51 52 54

4 5

4I2

A B D

C E

A B C D

Input 2

A. 2 w / 3 w / 4 w RTD or lin. R

B. TC (internal CJC or external 2 w / 3 w / 4 w CJC)(1)

C. mV

D. 3 w / 4 w potentiometer

E. 5 w potentiometer

F. 3 w potentiometer

(1) When using thermocouple input, the transmitter can be configured for either

constant, internal or external CJC via a Pt100 or Ni100 sensor. This must be selected

during device configuration.

July 2022 Quick Start Guide

Quick Start Guide 7

Output

2-wire installation

11 12 14

3.3 Multidrop mode

The communication is either by means of a HART® communicator or a HART

modem.

The HART communicator or a HART modem can be connected across BC or

CD.

The outputs of maximum 63 transmitters can be connected in parallel for a

digital HART 2-wire communication.

Before it is connected, each transmitter must be configured with a unique

number from 1 to 63. If two transmitters are configured with the same

number, both will be excluded. The transmitters must be programmed for

multidrop mode (with a fixed output signal of 4 mA). Maximum current in

the loop is therefore 252 mA.

F F F

A. Power supply

B. Connection

C. Connection

D. Connection

E. 250 Ω < Rload < 1100 Ω

F. Transmitter

Quick Start Guide July 2022

8 Emerson.com/Rosemount

4 Configuration

4.1 Safety messages

Instructions and procedures in this section may require special precautions

to ensure the safety of the personnel performing the operations.

Information that potentially raises safety issues is indicated by a warning

symbol ( ). Please refer to the following safety messages before performing

an operation preceded by this symbol.

WARNING

Failure to follow these installation guidelines could result in death or

serious injury.

Ensure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

Do not remove the housing covers in explosive atmospheres when the

circuit is live.

Before connecting a handheld communicator in an explosive

atmosphere, ensure the instruments are installed in accordance with

intrinsically safe or non-incendive field wiring practices.

Verify that the operating atmosphere of the transmitter is consistent

with the appropriate hazardous locations certifications.

All connection head covers must be fully engaged to meet explosion-

proof requirements.

Process leaks could result in death or serious injury.

Do not remove the thermowell while in operation.

Install and tighten thermowells and sensors before applying pressure.

Electrical shock could cause death or serious injury.

Use extreme caution when making contact with the leads and terminals.

4.2 Configuration methods

The device can be configured in the following ways:

•With a HART® communicator with Emerson's DDL driver

•Via programming framework (e.g. AMS Device Manager, DCS,

PACTware™)

July 2022 Quick Start Guide

Quick Start Guide 9

HART communicator

To get access to product-specific commands, the HART communicator must

be loaded with Emerson's DDL driver. This can be ordered through either the

FieldComm Group or Emerson.

11121314

A. Rosemount transmitter

B. Ex area

C. Safe area

D. 250 Ω < Rload < 1100 Ω

E. Receiving equipment

F. +V supply

G. Input

Programming framework

Support for both EDD and FDT®/DTM™ technology, offering configuration

and monitoring via relevant DCS/Asset Management Systems and

supported management packages (e.g. PACTware).

11121314

A. Rosemount transmitter

B. 250 Ω < Rload < 1100 Ω

C. Process computer

D. DCS, etc.

Quick Start Guide July 2022

10 Emerson.com/Rosemount

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