Overview; Safety Messages; Warnings - Emerson Rosemount 644 Reference Manual

Reference Manual
00809-0200-4728, Rev RA
Section 4
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 57
Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 57
Wiring and powering the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 58
4.1

Overview

The information in this section covers installation considerations for the Rosemount 644. A
Quick Start Guide is shipped with every transmitter to describe mounting, wiring, and basic
hardware installation procedures for initial installation.
4.2

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 ( ). Refer to the following safety messages before performing
an operation preceded by this symbol.
4.2.1

Warnings

Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Review the
approvals section of the this manual for any restrictions associated with a safe installation.

Process leaks may cause harm or result in death.

Electrical shock can result in death or serious injury.

Electrical Installation
Electrical Installation
In an Explosion-Proof/Flameproof installation, do not remove the transmitter covers
when power is applied to the unit.
Install and tighten process connectors before applying pressure.
Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock.
Section 4: Electrical Installation
April 2015
57