Emerson Rosemount 644 User manual

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.
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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.
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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.
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