Chapter 3 Hardware Installation; Overview; Safety Messages - Emerson Rosemount 644 Reference Manual

Reference Manual
00809-0200-4728
3 Hardware Installation
Note
Each transmitter is marked with a tag indicating the approvals. Install the transmitter
according to all applicable installation codes, and approval and installation drawings (see
Product Data
the hazardous location certifications. Once a device labeled with multiple approval types is
installed, it should not be reinstalled using any of the other labeled approval types. To
ensure this, the approval label should be permanently marked to distinguish the approval
type(s) used.
3.1

Overview

The information in this section covers installation considerations for the Rosemount 644
Temperature Transmitter with HART
transmitter to describe recommended mounting and wiring procedures for initial
installation. Dimensional drawings for transmitter mounting configurations are included in
the Product Data
3.2

Safety messages

Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing the operations. Refer to the following safety messages
before performing an operation preceded by this symbol.
WARNING
Follow instruction
Failure to follow these installation guidelines could result in death or serious injury.
Ensure only qualified personnel perform the installation.
Explosion
Explosions could result in death or serious injury.
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 that
the instruments in the loop 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.
Emerson.com/Rosemount
Sheet). Verify the operating atmosphere of the transmitter is consistent with
®
Sheet.
Protocol. A Quick Start Guide is shipped with every
Hardware Installation
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